Contacts of the helix formed by residues 271 - 333 (chain A) in PDB entry 1H88


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with SER 271 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    267A  VAL*     3.9     9.1    -      -       -      +
    268A  ASP*     2.5    30.1    +      -       -      -
    270A  HIS*     1.3    76.7    -      -       -      +
    272A  ASP*     1.3    54.5    +      -       -      +
    273A  GLU*     2.7    13.9    +      -       -      +
    274A  TYR*     2.6    42.1    +      -       -      +
    275A  LYS*     3.4     3.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 272 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270A  HIS      3.2     4.4    +      -       -      +
    271A  SER*     1.3    69.6    -      -       -      +
    273A  GLU*     1.3    61.1    +      -       -      +
    274A  TYR      3.2     0.2    -      -       -      -
    275A  LYS*     3.1    30.0    +      -       -      +
    276A  ILE*     3.4    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 273 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    267A  VAL*     5.7     5.9    -      -       -      +
    271A  SER*     2.7    15.5    +      -       -      +
    272A  ASP*     1.3    76.3    -      -       -      +
    274A  TYR*     1.3    51.7    +      -       -      +
    276A  ILE*     2.9    17.3    -      -       +      +
    277A  ARG*     2.8    60.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 274 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    267A  VAL*     5.1    11.2    -      -       +      +
    268A  ASP      4.0     2.9    -      -       -      +
    269A  LYS*     3.2    57.2    +      -       +      +
    271A  SER*     2.6    28.1    +      -       -      +
    273A  GLU*     1.3    71.5    -      -       -      +
    275A  LYS*     1.3    70.4    +      -       +      +
    277A  ARG*     3.0    10.2    +      -       +      +
    278A  ARG*     2.9    47.7    +      -       +      +
     10D    C      3.8    13.4    +      -       -      -
     11D    A      2.6    30.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 275 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    269A  LYS      4.6     8.4    +      -       -      +
    270A  HIS*     4.2    10.0    +      -       -      +
    271A  SER      3.7     8.7    -      -       -      +
    272A  ASP*     3.1    38.6    -      -       +      +
    274A  TYR*     1.3    82.2    -      -       +      +
    276A  ILE*     1.3    64.3    +      -       -      +
    278A  ARG*     3.3     4.7    +      -       -      +
    279A  GLU*     3.0    22.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 276 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    272A  ASP      3.4    11.0    +      -       -      +
    273A  GLU*     2.9    21.8    -      -       -      +
    275A  LYS*     1.3    75.2    -      -       -      +
    277A  ARG*     1.3    91.9    +      -       +      +
    279A  GLU*     3.0    23.5    +      -       -      +
    280A  ARG*     2.7    68.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 277 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273A  GLU*     2.8    51.7    +      -       +      +
    274A  TYR*     3.0    11.6    +      -       +      +
    276A  ILE*     1.3    90.0    -      -       -      +
    278A  ARG*     1.3    67.6    +      -       +      +
    280A  ARG*     3.3    17.3    +      -       -      +
    281A  ASN*     3.0    22.2    +      -       -      +
     13E    G      3.6    35.7    +      -       -      +
     14E    G      5.9     0.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 278 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    274A  TYR*     2.9    52.9    +      -       +      +
    275A  LYS*     3.6     8.7    -      -       -      +
    277A  ARG*     1.3    75.8    -      -       -      +
    279A  GLU*     1.3    58.3    +      -       -      +
    281A  ASN*     2.8    30.9    +      -       -      +
    282A  ASN*     2.7    62.1    +      -       -      +
     10D    C      3.4    50.3    +      -       -      +
     11D    A      2.6    40.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 279 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    275A  LYS      3.0    14.4    +      -       -      +
    276A  ILE*     3.5    25.5    -      -       +      +
    278A  ARG*     1.3    76.2    -      -       -      +
    280A  ARG*     1.3    66.2    +      -       -      +
    282A  ASN*     3.6    11.5    -      -       -      +
    283A  ILE*     3.2    46.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 280 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    276A  ILE*     2.7    53.8    +      -       +      +
    277A  ARG*     3.3    21.1    -      -       -      +
    279A  GLU*     1.3    79.1    +      -       -      +
    281A  ASN*     1.3    60.7    +      -       -      +
    283A  ILE*     3.8    10.2    -      -       -      +
    284A  ALA*     3.2    20.3    +      -       -      +
     13E    G      5.4     2.2    +      -       -      -
     14E    G      3.8    35.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 281 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277A  ARG      3.0    11.8    +      -       -      +
    278A  ARG*     2.8    45.9    +      -       -      +
    280A  ARG*     1.3    70.9    -      -       -      +
    282A  ASN*     1.3    53.2    +      -       -      +
    284A  ALA*     3.0     6.5    +      -       -      +
    285A  VAL*     2.7    37.4    +      -       -      +
     11D    A      3.4    15.4    +      -       -      +
     12D    A      3.7     7.9    -      -       -      +
     15E    A      3.9    11.7    +      -       -      +
     16E    T      3.2    27.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 282 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    278A  ARG*     2.7    47.4    +      -       -      +
    279A  GLU*     3.6     9.7    -      -       -      +
    281A  ASN*     1.3    71.1    -      -       -      +
    283A  ILE*     1.3    57.2    +      -       +      +
    285A  VAL*     2.7    28.5    +      -       -      +
    286A  ARG*     2.9    29.7    +      -       -      +
      9D    G      3.4    29.5    +      -       -      +
     10D    C      3.0    21.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 283 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    279A  GLU*     3.2    36.9    +      -       +      +
    280A  ARG*     3.8    10.3    -      -       -      +
    282A  ASN*     1.3    79.0    -      -       +      +
    284A  ALA*     1.3    65.6    +      -       -      +
    285A  VAL      3.2     0.2    +      -       -      -
    286A  ARG*     3.3    20.7    +      -       -      +
    287A  LYS*     3.0    25.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 284 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    280A  ARG      3.2    12.9    +      -       -      +
    281A  ASN*     3.0    12.4    +      -       -      +
    283A  ILE*     1.3    81.4    -      -       -      +
    285A  VAL*     1.3    63.4    +      -       -      +
    287A  LYS*     3.4     5.9    +      -       -      +
    288A  SER*     3.1    22.0    +      -       -      -
     14E    G      4.2     7.9    -      -       +      -
     15E    A      3.7    44.8    +      -       +      +
     16E    T      3.8     5.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 285 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    281A  ASN*     2.7    31.9    +      -       -      +
    282A  ASN*     2.7    14.6    +      -       -      +
    284A  ALA*     1.3    66.5    -      -       -      +
    286A  ARG*     1.3    64.5    +      -       -      +
    287A  LYS      2.8     5.6    +      -       -      -
    288A  SER*     3.0    13.2    +      -       -      -
    289A  ARG*     3.0    51.6    +      -       +      +
      8D    C      6.2     0.2    -      -       +      -
      9D    G      4.7     9.4    -      -       +      +
     10D    C      4.0     7.0    -      -       +      +
     11D    A      3.6     6.7    -      -       -      +
     16E    T      4.0    11.0    -      -       +      -
     17E    T      3.2    25.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 286 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    282A  ASN*     2.9    29.7    +      -       -      +
    283A  ILE*     3.7    22.9    -      -       -      +
    285A  VAL*     1.3    80.4    -      -       +      +
    287A  LYS*     1.3    57.6    +      -       -      +
    289A  ARG*     4.2     5.5    -      -       -      +
    290A  ASP*     3.0    35.7    +      -       -      +
      8D    C      4.1    28.7    +      -       -      +
      9D    G      2.9    38.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 287 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283A  ILE*     3.0    16.5    +      -       +      +
    284A  ALA*     3.4     9.6    -      -       -      +
    285A  VAL      2.8     1.6    +      -       -      -
    286A  ARG*     1.3    76.8    -      -       -      +
    288A  SER*     1.3    65.6    +      -       -      +
    290A  ASP*     3.4     4.3    +      -       -      +
    291A  LYS*     2.9    45.7    +      -       -      +
     14E    G      4.6     0.8    +      -       -      -
     15E    A      2.9    39.9    +      -       +      +
     16E    T      5.8     1.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 288 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284A  ALA      3.1    10.0    +      -       -      -
    285A  VAL      3.0     7.4    +      -       -      -
    287A  LYS*     1.3    79.2    -      -       -      +
    289A  ARG*     1.3    53.4    +      -       -      +
    291A  LYS*     3.1     6.6    +      -       -      +
    292A  ALA*     2.8    35.7    +      -       -      +
    295A  ARG*     4.7     1.0    +      -       -      -
     15E    A      4.6     1.3    -      -       -      +
     16E    T      3.1    63.5    +      -       -      +
     17E    T      4.4     6.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 289 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285A  VAL*     3.0    42.2    +      -       +      +
    286A  ARG*     4.2     5.6    -      -       -      +
    288A  SER*     1.3    74.2    -      -       -      +
    290A  ASP*     1.3    65.0    +      -       -      +
    291A  LYS      3.0     1.3    -      -       -      -
    292A  ALA*     3.3     7.7    +      -       +      +
    293A  LYS*     3.1    26.3    +      -       -      +
      8D    C      3.5    22.7    -      -       -      +
      9D    G      2.5    44.0    +      -       -      -
     10D    C      3.9     0.2    -      -       -      +
     17E    T      4.2    16.9    +      -       +      +
     18E    G      2.9    22.4    +      -       -      -
     19E    C      3.3     7.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 290 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286A  ARG*     3.0    28.4    +      -       -      +
    287A  LYS*     3.8     5.6    -      -       -      +
    289A  ARG*     1.3    76.3    -      -       -      +
    291A  LYS*     1.3    60.1    +      -       -      +
    293A  LYS*     3.8    22.6    +      -       -      +
    294A  MET*     3.3    29.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 291 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    287A  LYS*     2.9    40.9    +      -       -      +
    288A  SER*     3.3     5.2    -      -       -      +
    290A  ASP*     1.3    75.7    -      -       -      +
    292A  ALA*     1.3    66.6    +      -       -      +
    293A  LYS      3.1     1.3    -      -       -      -
    294A  MET*     2.9    19.2    +      -       +      +
    295A  ARG*     3.0    33.7    +      -       +      +
     15E    A      6.3     0.4    -      -       -      -
     16E    T      4.8    19.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 292 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    288A  SER*     2.8    20.3    +      -       -      +
    289A  ARG*     3.3     8.0    +      -       -      +
    291A  LYS*     1.3    73.0    -      -       -      +
    293A  LYS*     1.3    58.1    +      -       -      +
    295A  ARG*     3.3    28.3    +      -       -      +
    296A  ASN*     2.9    37.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 293 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    289A  ARG      3.1    14.2    +      -       -      +
    290A  ASP*     3.8    25.5    +      -       -      +
    292A  ALA*     1.3    76.8    -      -       -      +
    294A  MET*     1.3    58.6    +      -       -      +
    296A  ASN*     3.4     6.0    +      -       -      +
    297A  LEU*     2.9    39.2    +      -       +      +
      7D    G      3.5    34.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 294 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    290A  ASP*     3.3    21.2    +      -       -      +
    291A  LYS*     2.9    14.7    +      -       +      +
    293A  LYS*     1.3    80.2    -      -       -      +
    295A  ARG*     1.3    58.1    +      -       +      +
    297A  LEU*     3.7    12.6    -      -       -      +
    298A  GLU*     2.9    36.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 295 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    288A  SER      4.7     1.2    +      -       -      -
    291A  LYS*     3.0    33.2    +      -       +      +
    292A  ALA*     3.4    42.4    -      -       -      +
    294A  MET*     1.3    76.5    -      -       +      +
    296A  ASN*     1.3    70.2    +      -       -      +
    297A  LEU      3.1     0.2    +      -       -      -
    298A  GLU*     3.1     6.5    +      -       -      +
    299A  THR*     2.8    30.2    +      -       -      +
     16E    T      5.3     5.4    +      -       -      -
     17E    T      5.6     3.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 296 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292A  ALA*     2.9    24.2    +      -       -      +
    293A  LYS*     3.7     7.4    -      -       -      +
    295A  ARG*     1.3    81.6    +      -       -      +
    297A  LEU*     1.3    61.3    +      -       -      +
    299A  THR*     3.6     4.7    +      -       -      +
    300A  GLN*     3.2    26.3    +      -       -      +
    296B  ASN*     2.5    53.6    +      -       -      +
    299B  THR*     5.8     0.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 297 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    293A  LYS*     2.9    23.5    +      -       +      +
    294A  MET*     3.7    13.0    -      -       -      +
    296A  ASN*     1.3    73.2    -      -       -      +
    298A  GLU*     1.3    66.8    +      -       -      +
    299A  THR      3.1     1.1    -      -       -      -
    300A  GLN*     2.9    34.1    +      -       +      +
    301A  HIS*     3.1    33.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 298 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    294A  MET*     2.9    23.0    +      -       +      +
    295A  ARG*     3.8     5.4    -      -       -      +
    297A  LEU*     1.3    76.2    -      -       -      +
    299A  THR*     1.3    60.9    +      -       -      +
    301A  HIS*     3.3    13.2    +      -       +      +
    302A  LYS*     3.2    29.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 299 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295A  ARG*     2.8    20.6    +      -       -      +
    296A  ASN*     3.8     7.2    -      -       -      +
    298A  GLU*     1.3    73.8    -      -       -      +
    300A  GLN*     1.3    67.3    +      -       -      +
    302A  LYS*     3.2    18.4    +      -       -      +
    303A  VAL*     3.2     9.5    +      -       -      +
    296B  ASN*     5.0     6.5    -      -       -      +
    299B  THR*     3.6    23.6    -      -       +      -
    300B  GLN*     4.3    22.4    +      -       +      +
    303B  VAL*     3.8    15.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 300 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296A  ASN*     3.2    15.9    +      -       -      +
    297A  LEU*     2.9    29.3    +      -       +      +
    299A  THR*     1.3    80.2    -      -       -      +
    301A  HIS*     1.3    63.7    +      -       +      +
    303A  VAL*     2.9    31.9    -      -       +      +
    304A  LEU*     3.1    13.3    +      -       +      +
    295B  ARG*     4.4    18.5    +      -       -      -
    299B  THR*     4.5    10.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 301 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    297A  LEU*     3.1    45.4    +      -       +      +
    298A  GLU*     3.6    11.0    -      -       +      +
    299A  THR      3.2     0.4    -      -       -      -
    300A  GLN*     1.3    78.3    -      -       +      +
    302A  LYS*     1.3    55.3    +      -       +      +
    304A  LEU*     2.7    41.7    +      -       +      +
    305A  GLU*     2.8    17.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 302 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    298A  GLU*     3.2    22.1    +      -       +      +
    299A  THR*     3.2    11.3    +      -       -      +
    301A  HIS*     1.3    78.1    -      -       +      +
    303A  VAL*     1.3    57.7    +      -       -      +
    305A  GLU*     3.5    24.0    +      -       -      -
    306A  LEU*     2.8    56.2    +      -       +      +
    303B  VAL*     4.3    18.2    -      -       +      -
    307B  THR*     5.8     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 303 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299A  THR      3.2     7.7    +      -       -      +
    300A  GLN*     2.9    24.2    -      -       +      +
    301A  HIS      3.1     0.6    -      -       -      -
    302A  LYS*     1.3    72.7    -      -       -      +
    304A  LEU*     1.3    70.5    +      -       +      +
    306A  LEU*     4.6     0.2    -      -       -      -
    307A  THR*     2.7    42.0    +      -       -      +
    299B  THR*     4.4    11.7    -      -       +      -
    302B  LYS*     3.6    32.3    -      -       +      -
    303B  VAL*     3.8    20.5    -      -       +      +
    306B  LEU*     3.8    11.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 304 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300A  GLN*     3.1    16.1    +      -       +      +
    301A  HIS*     2.7    30.1    +      -       +      +
    303A  VAL*     1.3    83.1    -      -       +      +
    305A  GLU*     1.3    64.8    +      -       -      +
    307A  THR*     2.9    10.8    +      -       +      -
    308A  ALA*     2.8    22.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 305 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    301A  HIS*     2.8    18.4    +      -       +      +
    302A  LYS*     3.5    32.0    +      -       -      +
    304A  LEU*     1.3    71.4    -      -       -      +
    306A  LEU*     1.3    69.6    +      -       +      +
    308A  ALA*     2.8    19.5    +      -       -      +
    309A  GLU*     2.8    15.2    +      -       -      +
    312A  ARG*     5.1     0.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 306 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    302A  LYS*     2.8    53.2    +      -       -      +
    305A  GLU*     1.3    78.0    -      -       +      +
    307A  THR*     1.3    56.3    +      -       -      +
    309A  GLU*     4.1     4.3    -      -       +      -
    310A  ASN*     2.8    28.8    +      -       -      +
    303B  VAL*     3.4    23.6    -      -       +      +
    306B  LEU*     3.7    19.9    -      -       +      +
    307B  THR*     2.9    39.7    -      -       -      +
    310B  ASN*     3.3    18.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 307 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    303A  VAL*     2.7    32.3    +      -       -      +
    304A  LEU*     3.3    11.4    -      -       +      +
    306A  LEU*     1.3    69.8    -      -       -      +
    308A  ALA*     1.3    71.5    +      -       -      +
    310A  ASN*     3.4     6.4    +      -       -      +
    311A  GLU*     3.1    21.7    +      -       +      +
    302B  LYS*     5.7     0.2    -      -       -      +
    306B  LEU*     3.3    17.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 308 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    304A  LEU      2.8    10.4    +      -       -      +
    305A  GLU*     2.8    16.9    +      -       -      +
    307A  THR*     1.3    71.3    -      -       -      +
    309A  GLU*     1.3    64.9    +      -       -      +
    311A  GLU*     2.7    23.1    +      -       -      +
    312A  ARG*     2.9    33.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 309 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305A  GLU      2.8    14.9    +      -       -      +
    306A  LEU*     3.5     9.0    -      -       +      +
    308A  ALA*     1.3    73.4    -      -       -      +
    310A  ASN*     1.3    64.5    +      -       -      +
    312A  ARG*     2.9    31.1    +      -       -      +
    313A  LEU*     2.7    53.3    +      -       +      +
    310B  ASN*     3.4    20.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 310 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306A  LEU      2.8    18.6    +      -       -      +
    307A  THR*     3.6     8.5    +      -       -      +
    308A  ALA      3.1     0.2    +      -       -      -
    309A  GLU*     1.3    73.2    -      -       -      +
    311A  GLU*     1.3    61.1    +      -       -      +
    313A  LEU*     3.2     2.5    +      -       -      +
    314A  GLN*     2.8    52.5    +      -       -      +
    306B  LEU*     4.8    11.1    -      -       +      +
    309B  GLU*     3.2    18.5    -      -       -      +
    310B  ASN*     3.3    19.0    +      -       -      +
    313B  LEU*     3.2    23.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 311 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    307A  THR*     3.1    10.9    +      -       +      +
    308A  ALA*     2.7    19.0    +      -       -      +
    310A  ASN*     1.3    80.7    -      -       -      +
    312A  ARG*     1.3    60.8    +      -       -      +
    314A  GLN*     3.3     6.4    +      -       +      +
    315A  LYS*     3.0    50.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 312 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305A  GLU      5.1     0.4    +      -       -      -
    308A  ALA*     2.9    25.7    +      -       -      +
    309A  GLU*     3.3    43.6    +      -       -      +
    311A  GLU*     1.3    78.4    -      -       -      +
    313A  LEU*     1.3    62.8    +      -       +      +
    315A  LYS*     3.4     8.4    +      -       -      +
    316A  LYS*     3.2    21.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 313 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309A  GLU*     2.7    49.0    +      -       +      +
    310A  ASN      3.8     3.1    -      -       -      +
    312A  ARG*     1.3    73.9    -      -       +      +
    314A  GLN*     1.3    62.2    +      -       -      +
    316A  LYS*     3.3     9.1    +      -       +      +
    317A  VAL*     2.9    35.2    +      -       +      +
    310B  ASN*     3.7    33.9    -      -       +      +
    313B  LEU*     3.9    20.2    -      -       +      -
    314B  GLN*     4.2    21.5    -      -       +      +
    317B  VAL*     4.7    12.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 314 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    310A  ASN*     2.8    45.7    +      -       -      +
    311A  GLU*     3.8     6.1    -      -       -      +
    313A  LEU*     1.3    77.7    -      -       -      +
    315A  LYS*     1.3    57.6    +      -       +      +
    317A  VAL*     3.6     9.0    +      -       +      +
    318A  GLU*     3.1    28.3    +      -       -      +
    309B  GLU*     5.0     4.1    -      -       -      +
    313B  LEU*     4.3    17.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 315 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    311A  GLU*     3.0    43.9    +      -       +      +
    312A  ARG*     3.5    10.3    -      -       -      +
    314A  GLN*     1.3    76.0    -      -       +      +
    316A  LYS*     1.3    61.4    +      -       -      +
    318A  GLU*     2.8    34.5    +      -       -      +
    319A  GLN*     2.8    26.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 316 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312A  ARG      3.2    10.0    +      -       -      +
    313A  LEU*     3.7    12.1    -      -       +      +
    315A  LYS*     1.3    78.9    -      -       -      +
    317A  VAL*     1.3    62.8    +      -       -      +
    319A  GLN*     3.2    25.7    +      -       -      +
    320A  LEU*     3.0    47.9    +      -       +      +
    317B  VAL*     4.2    24.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 317 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313A  LEU      2.9    25.0    +      -       -      +
    314A  GLN*     3.7     8.7    -      -       +      +
    316A  LYS*     1.3    78.2    -      -       -      +
    318A  GLU*     1.3    56.5    -      -       -      +
    320A  LEU*     4.9     0.2    -      -       -      -
    321A  SER*     3.0    27.9    +      -       -      -
    313B  LEU*     4.2    24.5    -      -       +      +
    316B  LYS*     4.0    25.1    -      -       +      -
    317B  VAL*     3.3    26.5    -      -       +      +
    320B  LEU*     3.7    15.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 318 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    314A  GLN      3.1    15.3    +      -       -      +
    315A  LYS*     2.8    25.6    +      -       -      +
    317A  VAL*     1.3    75.8    -      -       -      +
    319A  GLN*     1.3    63.2    +      -       -      +
    321A  SER*     3.4     4.7    +      -       -      -
    322A  ARG*     2.8    59.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 319 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    315A  LYS*     2.8    24.6    +      -       -      +
    316A  LYS*     3.5    29.7    +      -       -      +
    318A  GLU*     1.3    74.5    -      -       +      +
    320A  LEU*     1.3    72.3    +      -       +      +
    322A  ARG*     2.8    10.9    +      -       -      +
    323A  GLU*     2.8    24.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 320 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    316A  LYS*     3.0    34.8    +      -       +      +
    319A  GLN*     1.3    82.3    -      -       +      +
    321A  SER*     1.3    65.3    +      -       -      +
    323A  GLU*     3.6     6.0    -      -       +      +
    324A  LEU*     2.7    29.6    +      -       +      +
    317B  VAL*     3.5    41.3    -      -       +      +
    320B  LEU*     3.6    25.1    -      -       +      +
    321B  SER*     3.8    13.5    -      -       -      +
    324B  LEU*     4.4    19.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 321 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    317A  VAL*     3.0    22.9    +      -       -      -
    318A  GLU*     3.7     4.7    -      -       -      -
    319A  GLN      3.1     0.4    -      -       -      -
    320A  LEU*     1.3    78.5    -      -       -      +
    322A  ARG*     1.3    63.6    +      -       -      +
    324A  LEU*     3.6     2.3    +      -       -      +
    325A  SER*     3.0    24.1    +      -       -      -
    320B  LEU*     3.7    18.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 322 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    318A  GLU*     2.8    54.5    +      -       -      +
    319A  GLN*     2.8    12.4    +      -       -      +
    321A  SER*     1.3    75.5    -      -       -      +
    323A  GLU*     1.3    51.5    +      -       -      +
    325A  SER*     3.1     9.0    +      -       -      +
    326A  THR*     2.7    45.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 323 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    319A  GLN      2.8    18.1    +      -       -      +
    320A  LEU*     3.6     8.1    -      -       +      +
    322A  ARG*     1.3    73.2    -      -       -      +
    324A  LEU*     1.3    64.6    +      -       -      +
    326A  THR*     3.0    13.4    +      -       -      +
    327A  LEU*     2.8    43.8    +      -       +      +
    324B  LEU*     4.1    17.5    -      -       +      -
    328B  ARG*     4.2    15.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 324 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    320A  LEU      2.7    19.2    +      -       -      +
    321A  SER*     3.7     5.8    -      -       -      +
    323A  GLU*     1.3    71.1    -      -       -      +
    325A  SER*     1.3    66.2    +      -       -      +
    327A  LEU*     2.9     5.4    +      -       -      +
    328A  ARG*     2.8    76.9    +      -       -      +
    320B  LEU*     3.4    41.3    -      -       +      +
    323B  GLU*     3.6    12.8    -      -       +      +
    324B  LEU*     3.5    38.9    -      -       +      +
    327B  LEU*     5.1     3.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 325 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    321A  SER      3.0    10.9    +      -       -      -
    322A  ARG*     3.3    10.8    +      -       -      +
    324A  LEU*     1.3    81.1    -      -       -      +
    326A  THR*     1.3    64.7    +      -       -      +
    328A  ARG*     3.4    10.6    +      -       -      +
    329A  ASN*     3.2    26.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 326 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    322A  ARG*     2.7    28.9    +      -       -      +
    323A  GLU*     3.4    18.5    -      -       -      +
    325A  SER*     1.3    74.0    +      -       -      +
    327A  LEU*     1.3    64.3    +      -       -      +
    329A  ASN*     3.2    20.1    -      -       +      +
    330A  LEU*     3.2    21.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 327 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    323A  GLU*     2.8    35.6    +      -       +      +
    324A  LEU      3.5     3.6    -      -       -      +
    326A  THR*     1.3    70.0    -      -       +      +
    328A  ARG*     1.3    66.6    +      -       -      +
    329A  ASN      2.5     6.1    +      -       -      -
    330A  LEU*     2.7    36.3    +      -       +      +
    331A  PHE*     2.8    11.3    +      -       -      +
    324B  LEU*     4.1    22.0    -      -       +      -
    327B  LEU*     3.5    22.2    -      -       +      -
    328B  ARG*     4.5    23.1    -      -       +      +
    331B  PHE*     4.4    14.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 328 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324A  LEU*     2.8    58.9    +      -       -      +
    325A  SER*     3.6     9.5    -      -       -      +
    327A  LEU*     1.3    70.5    -      -       -      +
    329A  ASN*     1.3    62.5    +      -       -      +
    331A  PHE*     3.3     8.1    -      -       -      +
    332A  LYS*     3.0    24.8    +      -       -      +
    323B  GLU*     3.5    24.9    +      -       -      +
    327B  LEU*     3.6    23.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 329 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    325A  SER*     3.2    15.3    +      -       -      +
    326A  THR*     3.2    14.1    -      -       +      +
    327A  LEU      2.5     3.8    +      -       -      -
    328A  ARG*     1.3    73.0    -      -       -      +
    330A  LEU*     1.3    67.0    +      -       +      +
    331A  PHE      2.8     5.0    +      -       -      -
    332A  LYS*     3.0     6.2    +      -       -      +
    333A  GLN*     2.9    29.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 330 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    326A  THR*     3.6    20.4    -      -       +      +
    327A  LEU*     2.7    33.6    +      -       +      +
    329A  ASN*     1.3    76.8    -      -       +      +
    331A  PHE*     1.3    61.1    +      -       -      +
    333A  GLN*     3.5    23.4    +      -       -      +
    334A  LEU*     3.2    25.4    +      -       +      +
    331B  PHE*     4.0    13.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 331 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    327A  LEU      2.8     6.7    +      -       -      +
    328A  ARG*     3.3    15.0    -      -       -      +
    329A  ASN      2.8     0.8    +      -       -      -
    330A  LEU*     1.3    73.7    -      -       -      +
    332A  LYS*     1.3    62.9    +      -       +      +
    333A  GLN      2.9     4.3    -      -       -      -
    334A  LEU*     2.8    43.9    +      -       +      +
    327B  LEU*     4.2     9.6    -      -       +      -
    330B  LEU*     3.9    43.7    -      -       +      -
    331B  PHE*     3.5    35.1    -      +       +      -
    334B  LEU*     5.2     5.6    -      -       +      -
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Residues in contact with LYS 332 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    328A  ARG      3.0    12.3    +      -       -      +
    329A  ASN*     3.0     4.0    +      -       -      +
    331A  PHE*     1.3    84.2    -      -       +      +
    333A  GLN*     1.3    56.9    +      -       -      +
    334A  LEU      3.3     2.8    -      -       -      +
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Residues in contact with GLN 333 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    329A  ASN*     2.9    17.2    +      -       -      +
    330A  LEU*     3.7    30.3    +      -       -      +
    331A  PHE      2.9     1.4    +      -       -      -
    332A  LYS*     1.3    77.9    -      -       -      +
    334A  LEU*     1.3    66.4    +      -       -      +
    335A  PRO*     3.3     4.7    -      -       -      +
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
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  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
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Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il