Contacts of the helix formed by residues 283 - 311 (chain A) in PDB entry 3M6L


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 PRO 283 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8A  GLU*     3.5    29.2    -      -       +      +
     12A  THR*     3.4    21.1    -      -       +      +
    274A  PHE*     3.6    29.4    -      -       +      -
    281A  HIS*     3.6    13.8    -      -       +      +
    282A  ILE*     1.4    85.8    -      -       -      +
    284A  GLN*     1.3    61.0    +      -       -      +
    285A  ALA      3.4     0.2    -      -       -      -
    286A  SER*     3.4     1.2    +      -       -      -
    287A  LYS*     2.9    26.0    +      -       -      +
    633A  PO4      3.6    26.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 284 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    282A  ILE      3.6     1.7    +      -       -      +
    283A  PRO*     1.3    71.2    -      -       -      +
    285A  ALA*     1.3    63.8    +      -       -      +
    287A  LYS*     3.2    23.3    +      -       -      +
    288A  ILE*     3.0    53.1    +      -       +      +
    633A  PO4      3.1    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 285 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5A  ILE*     3.8    16.2    -      -       +      +
      8A  GLU*     3.2    17.8    +      -       -      +
    283A  PRO      3.4     0.6    -      -       -      -
    284A  GLN*     1.3    80.0    -      -       -      +
    286A  SER*     1.3    57.5    +      -       -      +
    288A  ILE*     3.4     8.5    +      -       -      +
    289A  ARG*     3.0    30.7    +      -       -      +
    633A  PO4      5.2     1.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 286 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5A  ILE*     4.5     0.6    -      -       -      +
      8A  GLU*     2.7    38.8    +      -       -      +
      9A  GLN*     3.2    31.9    +      -       -      +
     12A  THR*     3.5    21.5    -      -       -      -
    282A  ILE*     4.9     0.7    -      -       -      -
    283A  PRO*     3.7     7.6    -      -       -      -
    284A  GLN      3.2     0.2    -      -       -      -
    285A  ALA*     1.3    72.5    -      -       -      +
    287A  LYS*     1.3    64.4    +      -       -      +
    290A  PHE*     3.0    33.7    +      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
     77A  HIS*     5.2     7.9    +      -       -      -
     78A  LEU*     4.6     6.2    -      -       +      +
    282A  ILE*     3.8    35.9    -      -       +      +
    283A  PRO      2.9    19.1    +      -       -      +
    284A  GLN*     3.5    23.1    -      -       -      +
    286A  SER*     1.3    75.0    -      -       -      +
    288A  ILE*     1.3    63.1    +      -       +      +
    290A  PHE*     4.2     1.0    -      -       -      +
    291A  GLU*     3.1    51.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 288 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284A  GLN*     3.0    50.8    +      -       +      +
    285A  ALA*     3.9     7.0    -      -       -      +
    287A  LYS*     1.3    77.4    -      -       +      +
    289A  ARG*     1.3    65.6    +      -       -      +
    291A  GLU*     3.4    20.9    +      -       +      +
    292A  SER*     3.1    23.1    +      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
      1A  MSE      3.4    24.7    -      -       -      +
      2A  ASN*     5.8     0.6    +      -       -      -
      5A  ILE*     3.9    24.0    -      -       +      +
      9A  GLN*     3.4    17.7    -      -       -      +
     44A  TYR*     3.1    42.0    +      -       -      +
    285A  ALA      3.0    18.9    +      -       -      +
    286A  SER      4.0     0.9    -      -       -      +
    288A  ILE*     1.3    78.9    -      -       -      +
    290A  PHE*     1.3    59.8    +      -       -      +
    292A  SER*     2.7    31.5    +      -       -      -
   2001A  GOL      3.0    16.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 290 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9A  GLN*     3.6    49.4    -      -       +      -
     12A  THR*     4.8     0.4    -      -       -      -
     13A  LEU*     3.8    29.6    -      -       +      -
     39A  LEU      5.4     0.2    -      -       -      -
     40A  SER*     4.4     3.8    -      -       -      -
     43A  SER*     4.0    20.9    -      -       -      -
     75A  PHE*     4.3    18.2    -      +       -      -
     78A  LEU*     3.4    47.3    -      -       +      +
     79A  SER*     3.6     7.0    -      -       -      +
    286A  SER*     3.0    29.7    +      -       -      +
    287A  LYS      4.4     0.9    -      -       -      +
    289A  ARG*     1.3    76.9    -      -       -      +
    291A  GLU*     1.3    62.9    +      -       -      +
    293A  ALA*     3.2    13.7    +      -       -      +
   2001A  GOL      3.0    20.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 291 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78A  LEU      3.4    11.6    +      -       -      +
     79A  SER      4.5     5.8    -      -       -      -
     80A  GLY*     5.6     1.6    -      -       -      +
    287A  LYS*     3.1    50.7    +      -       -      +
    288A  ILE*     3.5    26.5    +      -       +      +
    290A  PHE*     1.3    71.7    -      -       -      +
    292A  SER*     1.3    58.3    +      -       -      +
    293A  ALA      2.9    11.0    +      -       -      -
    294A  VAL*     3.0    25.2    +      -       +      +
    295A  GLU      4.4     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 292 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    288A  ILE*     3.1    13.2    +      -       -      -
    289A  ARG*     2.7    27.3    +      -       -      -
    290A  PHE      3.1     0.2    -      -       -      -
    291A  GLU*     1.3    77.8    -      -       -      +
    293A  ALA*     1.3    60.8    +      -       -      +
    294A  VAL      3.1     0.8    +      -       -      -
    295A  GLU*     3.4     9.0    +      -       -      +
    296A  LEU*     3.1    34.2    +      -       -      +
   2001A  GOL      3.4    15.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 293 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  HIS*     4.1    22.9    -      -       +      +
     50A  PRO*     3.5    15.6    -      -       +      +
     79A  SER*     3.7    16.4    -      -       -      +
    290A  PHE      3.2    16.6    +      -       -      +
    291A  GLU      2.9     0.4    +      -       -      -
    292A  SER*     1.3    79.1    +      -       -      +
    294A  VAL*     1.3    57.5    +      -       -      +
    296A  LEU*     4.2     4.4    -      -       -      +
    297A  GLY*     2.8    27.0    +      -       -      -
   2001A  GOL      3.8    15.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 294 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  ASN*     4.5     2.6    -      -       -      +
     50A  PRO*     4.1    10.1    -      -       +      -
     51A  LYS*     4.0    35.2    -      -       +      +
     79A  SER      3.4    20.6    -      -       -      +
     80A  GLY*     3.8    14.4    -      -       -      -
    291A  GLU*     3.0    17.9    +      -       +      +
    293A  ALA*     1.3    74.6    -      -       -      +
    295A  GLU*     1.3    66.7    +      -       -      +
    298A  ASP*     3.0    25.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 295 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291A  GLU      4.4     0.6    +      -       -      -
    292A  SER*     3.4     9.8    +      -       -      +
    294A  VAL*     1.3    82.4    -      -       -      +
    296A  LEU*     1.3    70.3    +      -       +      +
    298A  ASP*     3.3     5.6    +      -       -      +
    299A  LEU*     3.2    39.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 296 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292A  SER*     3.1    26.7    +      -       -      +
    293A  ALA*     4.2     4.0    -      -       -      +
    295A  GLU*     1.3    83.8    -      -       +      +
    297A  GLY*     1.3    57.6    +      -       -      +
    299A  LEU*     3.4    14.4    +      -       +      +
    300A  GLU*     3.1    32.5    +      -       +      +
   2001A  GOL      3.9    27.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 297 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  HIS      3.2    28.2    -      -       -      -
     49A  ASN*     3.7    12.6    -      -       -      +
     55A  TRP*     5.0     0.2    -      -       -      -
    293A  ALA      2.8    18.7    +      -       -      -
    294A  VAL      3.9     0.2    -      -       -      -
    296A  LEU*     1.3    69.4    -      -       -      +
    298A  ASP*     1.3    60.1    +      -       -      +
    300A  GLU*     3.9     6.8    -      -       -      +
    301A  GLU*     2.9    31.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 298 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  ASN*     4.0    15.7    +      -       -      +
     51A  LYS*     6.4     0.9    -      -       +      -
    294A  VAL*     3.0    20.3    +      -       +      +
    295A  GLU*     3.3     7.2    +      -       -      +
    297A  GLY*     1.3    77.9    -      -       -      +
    299A  LEU*     1.3    63.9    +      -       -      +
    301A  GLU*     3.9     1.7    -      -       -      +
    302A  ALA*     3.0    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 299 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295A  GLU*     3.2    36.6    +      -       +      +
    296A  LEU*     3.8    15.3    -      -       +      +
    298A  ASP*     1.3    79.7    -      -       -      +
    300A  GLU*     1.3    60.4    +      -       -      +
    302A  ALA*     3.2    10.5    +      -       +      +
    303A  LYS*     2.9    30.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 300 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47A  LYS*     3.3    42.4    -      -       +      +
     48A  HIS      5.6     0.2    -      -       -      +
     55A  TRP*     3.7    23.1    -      -       +      -
    296A  LEU*     3.1    23.1    +      -       +      +
    297A  GLY*     3.4     7.4    +      -       -      +
    299A  LEU*     1.3    74.1    -      -       -      +
    301A  GLU*     1.3    63.9    +      -       -      +
    303A  LYS*     3.4    21.4    +      -       -      +
    304A  TRP*     3.1    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 301 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  ASN*     2.7    33.3    +      -       -      +
     52A  ASN*     2.8    34.5    +      -       -      +
     55A  TRP*     3.8    37.6    -      -       +      +
    297A  GLY      2.9    17.1    +      -       -      +
    298A  ASP*     4.0     1.8    -      -       -      +
    300A  GLU*     1.3    78.9    -      -       -      +
    302A  ALA*     1.3    62.5    +      -       -      +
    304A  TRP*     3.1     3.6    +      -       -      +
    305A  LYS*     3.0    49.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 302 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    298A  ASP*     3.0    21.0    +      -       -      +
    299A  LEU*     3.2    13.9    +      -       +      +
    301A  GLU*     1.3    76.8    -      -       -      +
    303A  LYS*     1.3    61.7    +      -       -      +
    305A  LYS*     3.2    15.3    +      -       -      +
    306A  ASP*     3.1    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 303 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299A  LEU      2.9    15.9    +      -       -      +
    300A  GLU*     3.7    22.7    -      -       -      +
    302A  ALA*     1.3    74.3    -      -       -      +
    304A  TRP*     1.4    61.9    +      -       -      +
    306A  ASP*     3.3    11.7    +      -       -      +
    307A  LYS*     2.3    64.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 304 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  TRP*     3.5    30.5    -      +       +      +
     56A  LEU*     4.3    27.8    -      -       +      -
     57A  ASN*     3.5    23.4    -      -       +      +
    137A  LEU*     6.0     0.4    -      -       +      -
    140A  ASP      4.7     3.8    -      -       -      -
    141A  LEU*     2.7    55.6    +      -       +      +
    142A  ILE*     5.1     0.7    -      -       +      -
    300A  GLU      3.1    13.9    +      -       -      +
    301A  GLU*     3.1     8.5    +      -       -      +
    303A  LYS*     1.4    75.1    -      -       -      +
    305A  LYS*     1.3    76.0    +      -       +      +
    307A  LYS*     3.0    12.3    +      -       +      +
    308A  LEU*     2.8    51.3    +      -       +      -
    317A  LEU*     4.1    14.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 305 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    301A  GLU*     3.0    42.2    +      -       +      +
    302A  ALA*     3.2    14.1    +      -       -      +
    304A  TRP*     1.3    93.6    -      -       +      +
    306A  ASP*     1.3    60.4    +      -       -      +
    308A  LEU*     3.3     8.7    +      -       +      +
    309A  GLU*     2.9    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 306 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    302A  ALA*     3.1    19.9    +      -       -      +
    303A  LYS*     3.5    12.0    -      -       -      +
    305A  LYS*     1.3    78.1    -      -       -      +
    307A  LYS*     1.3    61.9    +      -       +      +
    309A  GLU*     3.3     8.3    +      -       -      +
    310A  LYS*     3.2    28.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 307 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140A  ASP*     3.4    35.5    -      -       +      +
    141A  LEU*     3.9    12.9    -      -       +      +
    303A  LYS*     2.3    60.5    +      -       -      +
    304A  TRP*     3.0    14.6    +      -       +      +
    306A  ASP*     1.3    74.4    -      -       +      +
    308A  LEU*     1.3    65.0    +      -       -      +
    310A  LYS*     3.2    19.9    +      -       +      +
    311A  SER*     3.2    13.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 308 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141A  LEU*     3.7    29.3    -      -       +      +
    304A  TRP*     2.8    39.5    +      -       +      +
    305A  LYS*     3.6    13.2    -      -       +      +
    307A  LYS*     1.3    76.7    -      -       -      +
    309A  GLU*     1.3    63.9    +      -       -      +
    311A  SER*     3.0    17.7    +      -       -      -
    313A  LYS      4.9     0.2    -      -       -      -
    314A  LYS*     3.4    35.8    -      -       +      +
    317A  LEU*     3.8    27.6    -      -       +      -
----------------------------------------------------------
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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  LYS      2.9    16.5    +      -       -      +
    306A  ASP*     3.7     8.5    -      -       -      +
    307A  LYS      3.3     0.4    -      -       -      -
    308A  LEU*     1.3    76.4    -      -       -      +
    310A  LYS*     1.4    56.9    +      -       +      +
    314A  LYS*     2.7    43.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 310 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306A  ASP*     3.2    17.1    +      -       +      +
    307A  LYS*     3.2    13.1    +      -       +      +
    308A  LEU      3.1     0.6    -      -       -      -
    309A  GLU*     1.4    76.3    -      -       +      +
    311A  SER*     1.3    61.9    +      -       -      +
    312A  ALA      3.9     0.9    +      -       -      -
    314A  LYS*     4.4     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 311 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140A  ASP*     4.3     9.1    +      -       -      -
    141A  LEU*     3.4    20.3    -      -       -      +
    307A  LYS      3.2    10.2    +      -       -      -
    308A  LEU*     3.0    16.8    +      -       -      -
    309A  GLU      3.3     0.2    -      -       -      -
    310A  LYS*     1.3    80.0    -      -       -      +
    312A  ALA*     1.3    58.2    +      -       -      +
    313A  LYS*     3.0    33.5    +      -       -      +
    314A  LYS*     2.9    26.6    +      -       -      +
----------------------------------------------------------
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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
------------------------------------------------------------
  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) +   -    +    +   +   +    +    -
------------------------------------------------------------
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