Contacts of the helix formed by residues 284 - 315 (chain B) in PDB entry 5J0Z


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 GLN 284 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    279B  LEU*     3.2    24.3    +      -       +      +
    282B  GLU*     3.3    31.2    -      -       -      +
    283B  SER*     1.3    78.0    -      -       -      +
    285B  PRO*     1.4    52.1    -      -       -      +
    286B  ALA*     2.6    20.3    +      -       +      -
    287B  ARG*     2.6    46.1    +      -       +      +
    288B  ALA*     3.1     7.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 285 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    279B  LEU      4.6     2.4    -      -       -      +
    280B  LYS*     3.8    33.3    +      -       +      +
    283B  SER*     3.3    14.4    -      -       -      +
    284B  GLN*     1.4    86.3    -      -       -      +
    286B  ALA*     1.3    61.6    +      -       -      +
    288B  ALA*     3.9     6.7    -      -       +      +
    289B  ALA*     3.1    26.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 286 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284B  GLN*     2.6     6.6    +      -       -      +
    285B  PRO*     1.3    76.2    -      -       -      +
    287B  ARG*     1.3    51.2    +      -       -      +
    289B  ALA*     3.4     1.4    -      -       -      +
    290B  SER*     2.8    40.7    +      -       -      +
    293B  ARG*     4.8     4.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 287 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    279B  LEU*     3.9    12.9    -      -       +      +
    284B  GLN*     2.6    41.8    +      -       +      +
    286B  ALA*     1.3    72.8    -      -       -      +
    288B  ALA*     1.3    66.0    +      -       -      +
    290B  SER*     3.3    19.4    +      -       -      -
    291B  ILE*     3.3    24.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 288 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    276B  GLN*     3.7    26.3    -      -       +      +
    279B  LEU*     3.5    33.1    -      -       +      +
    280B  LYS*     4.2     9.2    -      -       +      +
    284B  GLN      3.1     6.7    +      -       -      +
    285B  PRO*     3.9    14.4    -      -       +      +
    287B  ARG*     1.3    81.2    -      -       -      +
    289B  ALA*     1.3    58.7    +      -       -      +
    290B  SER      3.2     0.2    +      -       -      -
    291B  ILE*     3.2     7.0    +      -       -      +
    292B  THR*     3.1    22.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 289 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    219B  THR*     5.3     6.1    -      -       +      -
    276B  GLN*     5.4     0.9    -      -       -      +
    280B  LYS*     4.4    13.7    -      -       -      +
    285B  PRO      3.1    15.6    +      -       -      +
    286B  ALA*     3.4     3.1    -      -       -      -
    288B  ALA*     1.3    75.4    -      -       -      +
    290B  SER*     1.3    60.4    +      -       -      +
    292B  THR*     3.7    21.8    -      -       +      -
    293B  ARG*     3.0    37.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 290 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286B  ALA*     2.8    25.5    +      -       -      +
    287B  ARG*     3.4    16.3    -      -       -      -
    288B  ALA      3.1     0.4    -      -       -      -
    289B  ALA*     1.3    75.9    -      -       -      +
    291B  ILE*     1.3    57.7    +      -       -      +
    293B  ARG*     3.1    18.0    +      -       -      +
    294B  ALA*     2.8    34.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 291 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    272B  GLU*     4.0    25.6    -      -       +      +
    275B  VAL*     3.9    30.1    -      -       +      -
    276B  GLN*     5.7     1.6    -      -       +      +
    279B  LEU*     3.9    13.7    -      -       +      -
    287B  ARG*     3.4    27.8    -      -       +      +
    288B  ALA      3.2     6.3    +      -       -      +
    290B  SER*     1.3    77.9    -      -       -      +
    292B  THR*     1.3    64.7    +      -       -      +
    294B  ALA*     2.8    20.3    +      -       -      +
    295B  SER*     2.8    18.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 292 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216B  PHE*     3.5    26.5    +      -       -      +
    218B  SER      5.1     0.2    -      -       -      +
    219B  THR*     5.2     2.7    -      -       +      -
    272B  GLU*     2.6    26.7    +      -       -      -
    276B  GLN*     2.8    29.8    +      -       -      +
    288B  ALA      3.1     9.7    +      -       -      -
    289B  ALA*     3.7    22.0    -      -       +      +
    290B  SER      3.3     0.2    -      -       -      -
    291B  ILE*     1.3    79.6    -      -       -      +
    293B  ARG*     1.3    64.0    +      -       +      +
    295B  SER*     3.5     5.5    -      -       -      -
    296B  ARG*     3.4    33.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 293 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286B  ALA*     4.8     4.4    +      -       -      +
    289B  ALA*     3.0    34.1    +      -       +      +
    290B  SER*     3.1    15.0    +      -       -      +
    292B  THR*     1.3    78.4    -      -       +      +
    294B  ALA*     1.3    67.5    +      -       -      +
    296B  ARG*     3.2    54.0    -      -       -      +
    297B  ILE*     4.1     6.4    +      -       -      +
    278C  TYR*     5.6     2.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 294 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    290B  SER      2.8    16.1    +      -       -      +
    291B  ILE*     2.8    13.9    +      -       +      +
    293B  ARG*     1.3    70.2    -      -       -      +
    295B  SER*     1.3    55.2    +      -       -      +
    297B  ILE*     2.7    31.2    +      -       -      +
    298B  ALA*     3.0    14.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 295 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216B  PHE*     3.7    28.9    -      -       -      -
    272B  GLU*     3.5    18.4    -      -       -      +
    291B  ILE*     2.8    19.1    +      -       -      +
    292B  THR      3.5     9.0    -      -       -      -
    294B  ALA*     1.3    71.7    -      -       -      +
    296B  ARG*     1.3    53.9    +      -       -      +
    297B  ILE      2.6    13.0    +      -       -      -
    298B  ALA*     3.0    20.7    +      -       -      +
    299B  PHE*     3.1    28.3    +      -       -      +
    300B  PRO*     3.8     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 296 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216B  PHE*     3.1    32.7    +      -       +      -
    217B  TRP*     3.4    71.2    -      -       +      +
    219B  THR*     6.0     2.6    -      -       -      +
    292B  THR*     3.4    20.3    +      -       -      +
    293B  ARG*     3.2    45.6    -      -       -      +
    294B  ALA      3.0     0.2    +      -       -      -
    295B  SER*     1.3    76.7    -      -       -      +
    297B  ILE*     1.3    67.1    +      -       +      +
    300B  PRO*     3.5    16.4    -      -       -      +
    278C  TYR*     3.8    28.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 297 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    293B  ARG      4.4     6.3    -      -       -      +
    294B  ALA      2.7    10.5    +      -       -      +
    295B  SER      2.6     2.4    +      -       -      -
    296B  ARG*     1.3    87.6    -      -       +      +
    298B  ALA*     1.3    65.5    +      -       -      +
    299B  PHE      3.1     2.5    +      -       -      -
    300B  PRO*     3.3     4.8    -      -       -      +
    301B  VAL*     3.0    41.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 298 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    294B  ALA*     3.0    10.4    +      -       +      +
    295B  SER*     3.8    18.4    -      -       -      +
    297B  ILE*     1.3    77.9    -      -       -      +
    299B  PHE*     1.3    61.0    +      -       +      +
    301B  VAL*     3.7     4.4    -      -       -      +
    302B  VAL*     2.8    47.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 299 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213B  TRP*     3.5    28.0    -      +       +      -
    216B  PHE*     3.4    37.2    -      +       +      -
    265B  PHE*     4.0    16.8    -      +       -      -
    268B  VAL*     3.4    30.5    -      -       +      -
    269B  ALA*     3.8    26.0    -      -       +      -
    272B  GLU*     4.5     5.4    -      -       +      -
    295B  SER*     3.1    32.0    +      -       -      +
    298B  ALA*     1.3    83.8    -      -       +      +
    300B  PRO*     1.4    72.5    -      -       +      +
    301B  VAL      3.1     0.3    +      -       -      -
    302B  VAL*     3.8     2.2    -      -       -      -
    303B  PHE*     2.9    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 300 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213B  TRP*     3.9    31.6    -      -       +      -
    216B  PHE*     5.6     0.9    -      -       +      -
    217B  TRP*     6.3     0.4    -      -       +      -
    295B  SER      3.8     1.3    -      -       -      +
    296B  ARG*     3.5    22.4    -      -       -      +
    297B  ILE*     3.3     8.5    -      -       -      +
    299B  PHE*     1.4    95.0    -      -       +      +
    301B  VAL*     1.3    55.5    +      -       +      +
    303B  PHE*     3.7     0.9    -      -       -      +
    304B  LEU*     3.1    36.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 301 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    297B  ILE*     3.0    38.7    +      -       +      +
    298B  ALA*     3.7     4.9    -      -       -      +
    300B  PRO*     1.3    72.1    -      -       +      +
    302B  VAL*     1.3    74.7    +      -       +      +
    303B  PHE      3.0     1.3    -      -       -      -
    304B  LEU*     2.8    18.3    +      -       -      +
    305B  LEU*     2.9    32.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 302 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265B  PHE*     3.9    18.8    -      -       +      -
    298B  ALA*     2.8    32.4    +      -       +      +
    299B  PHE*     4.0     2.7    -      -       -      +
    301B  VAL*     1.3    79.5    -      -       +      +
    303B  PHE*     1.3    56.4    +      -       -      +
    305B  LEU*     3.7    12.6    -      -       +      +
    306B  ALA*     2.9    32.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 303 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    206B  LEU*     3.6    28.5    -      -       +      -
    209B  LEU*     3.6    23.6    -      -       +      -
    210B  PHE*     4.8     4.9    -      +       -      -
    213B  TRP*     4.0    17.0    -      +       +      -
    258B  ILE*     5.8     1.3    -      -       +      -
    261B  MET*     3.3    28.5    -      -       +      -
    262B  ILE*     4.2    15.5    -      -       +      -
    265B  PHE*     3.3    27.9    -      +       +      -
    299B  PHE      2.9    17.1    +      -       -      +
    300B  PRO      3.7     4.3    -      -       -      +
    301B  VAL      2.9     0.8    +      -       -      -
    302B  VAL*     1.3    74.1    -      -       -      +
    304B  LEU*     1.3    70.1    +      -       +      +
    306B  ALA*     3.2     0.8    +      -       -      -
    307B  ASN*     2.8    53.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 304 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300B  PRO*     3.1    21.3    +      -       +      +
    301B  VAL*     2.8     9.4    +      -       -      +
    303B  PHE*     1.3    80.8    -      -       +      +
    305B  LEU*     1.3    67.1    +      -       +      +
    307B  ASN*     4.6     3.7    -      -       -      +
    308B  ILE*     3.3    35.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 305 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    301B  VAL*     2.9    33.4    +      -       +      +
    302B  VAL*     3.7    14.4    -      -       +      +
    304B  LEU*     1.3    77.2    -      -       +      +
    306B  ALA*     1.3    52.7    +      -       +      +
    308B  ILE*     2.8    12.8    +      -       -      +
    309B  ILE*     2.7    45.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 306 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261B  MET*     4.0    19.6    -      -       +      +
    265B  PHE*     5.0     2.7    -      -       +      -
    302B  VAL*     2.9    23.8    +      -       +      +
    303B  PHE*     4.1     2.0    -      -       -      +
    305B  LEU*     1.3    77.9    -      -       +      +
    307B  ASN*     1.3    58.1    +      -       -      +
    309B  ILE*     3.6    20.3    -      -       +      +
    310B  LEU*     3.1    31.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 307 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    206B  LEU*     6.1     0.8    -      -       -      +
    254B  TYR*     5.2     4.8    +      -       -      -
    258B  ILE*     4.0    31.3    -      -       -      +
    261B  MET*     3.3    28.2    -      -       -      +
    303B  PHE*     2.8    40.0    +      -       +      +
    304B  LEU*     4.6     4.0    -      -       +      +
    306B  ALA*     1.3    71.9    -      -       -      +
    308B  ILE*     1.3    55.5    +      -       +      +
    310B  LEU*     3.7     5.0    -      -       -      +
    311B  ALA*     2.7    35.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 308 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    304B  LEU*     3.3    24.8    +      -       +      +
    305B  LEU*     2.8    12.3    +      -       -      +
    307B  ASN*     1.3    76.8    -      -       +      +
    309B  ILE*     1.3    64.8    +      -       +      +
    310B  LEU      3.3     0.2    -      -       -      -
    311B  ALA*     4.0     8.5    -      -       +      -
    312B  PHE*     3.2    39.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 309 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305B  LEU*     2.7    26.2    +      -       +      +
    306B  ALA*     3.6    30.1    -      -       +      +
    308B  ILE*     1.3    72.2    -      -       +      +
    310B  LEU*     1.3    61.8    +      -       +      +
    312B  PHE*     3.5     3.1    +      -       -      +
    313B  LEU*     3.0    46.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 310 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254B  TYR*     4.6     6.3    -      -       +      +
    257B  ALA*     3.8    26.9    -      -       +      +
    258B  ILE*     4.0    23.8    -      -       +      +
    261B  MET*     4.4    15.9    -      -       +      -
    306B  ALA      3.1    18.1    +      -       -      +
    307B  ASN*     3.7     4.9    -      -       -      +
    309B  ILE*     1.3    77.1    -      -       +      +
    311B  ALA*     1.3    69.6    +      -       -      +
    313B  LEU*     2.9    25.1    +      -       +      +
    314B  PHE*     2.9    46.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 311 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254B  TYR*     4.3    19.4    -      -       -      +
    307B  ASN      2.7    23.0    +      -       -      +
    308B  ILE*     3.8    12.3    -      -       +      +
    310B  LEU*     1.3    74.7    -      -       -      +
    312B  PHE*     1.3    72.0    +      -       +      +
    314B  PHE      3.2     0.5    +      -       -      -
    315B  PHE*     3.2    30.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 312 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    308B  ILE*     3.2    33.7    +      -       +      +
    309B  ILE*     4.2     2.7    -      -       -      +
    311B  ALA*     1.3    82.9    -      -       +      +
    313B  LEU*     1.3    53.5    +      -       -      +
    314B  PHE      2.8    13.3    +      -       -      -
    315B  PHE      2.9    24.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 313 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309B  ILE*     3.0    35.9    +      -       +      +
    310B  LEU*     2.9    28.0    +      -       +      +
    312B  PHE*     1.3    74.7    -      -       -      +
    314B  PHE*     1.3    63.6    +      -       +      -
    315B  PHE      3.7     0.2    -      -       -      -
    404B  HXA      4.6    19.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 314 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117B  ARG*     3.6    25.4    -      -       +      -
    118B  ARG*     3.4    25.0    +      -       +      +
    252B  MET*     3.4    34.5    -      -       +      -
    253B  THR      3.7    11.9    -      -       -      -
    254B  TYR*     3.6    31.2    -      +       +      -
    257B  ALA*     4.1    15.9    -      -       +      -
    310B  LEU*     2.9    30.5    +      -       +      +
    312B  PHE      2.8     1.8    +      -       -      -
    313B  LEU*     1.3    77.8    -      -       +      +
    315B  PHE*     1.3    83.4    +      -       +      +
    404B  HXA      4.9     7.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 315 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118B  ARG*     3.9    46.4    -      -       +      +
    121B  PHE*     4.2    36.6    -      +       +      -
    254B  TYR*     4.1    24.5    -      +       -      -
    311B  ALA*     3.2    20.1    +      -       +      +
    312B  PHE*     2.9    19.3    +      -       -      +
    313B  LEU      3.7     0.2    -      -       -      -
    314B  PHE*     1.3   110.0    -      -       +      +
    404B  HXA      5.8     0.7    -      -       -      -
----------------------------------------------------------
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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
------------------------------------------------------------
  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