Contacts of the helix formed by residues 402 - 431 (chain A) in PDB entry 5AVL


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 LEU 402 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    400A  ASP*     3.1    14.1    +      -       -      +
    401A  ARG*     1.3    78.8    -      -       -      +
    403A  MET*     1.3    64.7    +      -       -      +
    404A  PHE      3.3     0.2    -      -       -      -
    405A  PRO*     3.2    18.6    -      -       +      +
    406A  ARG*     3.0    41.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 403 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    349A  LEU*     3.7    37.9    -      -       +      +
    393A  VAL*     3.7    18.2    -      -       +      -
    397A  HIS*     3.7    33.0    -      -       +      +
    400A  ASP*     3.1    32.7    +      -       -      +
    402A  LEU*     1.3    75.9    -      -       -      +
    404A  PHE*     1.3    62.0    +      -       -      +
    406A  ARG*     3.2    33.4    +      -       -      +
    407A  MET*     3.1    41.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 404 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    386A  VAL*     3.7    30.3    -      -       +      -
    389A  LEU*     4.1    14.4    -      -       +      -
    390A  HIS*     3.5    59.9    -      +       +      -
    393A  VAL*     3.7    21.8    -      -       +      +
    401A  ARG      4.2     3.0    +      -       -      +
    403A  MET*     1.3    78.8    -      -       -      +
    405A  PRO*     1.4    77.1    -      -       +      +
    407A  MET*     3.6     3.7    +      -       -      +
    408A  LEU*     3.4    52.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 405 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    401A  ARG      3.3    19.3    -      -       -      +
    402A  LEU*     3.3    31.6    -      -       +      +
    404A  PHE*     1.4    97.3    -      -       +      +
    406A  ARG*     1.3    55.4    +      -       +      +
    408A  LEU*     3.1    12.8    +      -       +      +
    409A  MET*     2.9    37.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 406 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348A  GLU*     5.6     8.1    +      -       -      +
    349A  LEU*     3.5    34.8    -      -       +      +
    400A  ASP*     4.5     8.9    +      -       -      -
    402A  LEU*     3.0    41.7    +      -       +      +
    403A  MET*     3.2    24.6    +      -       -      +
    405A  PRO*     1.3    75.2    -      -       +      +
    407A  MET*     1.3    61.2    +      -       -      +
    409A  MET*     3.3    18.0    +      -       -      +
    410A  LYS*     3.4    19.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 407 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    349A  LEU*     4.3     9.9    -      -       +      -
    351A  LEU*     3.8    29.8    -      -       +      -
    355A  GLU*     3.6    45.5    -      -       -      +
    359A  LEU*     3.8    25.9    -      -       +      +
    389A  LEU*     4.4    11.4    -      -       +      -
    393A  VAL*     3.8    26.2    -      -       +      -
    397A  HIS*     4.4     1.8    -      -       +      +
    403A  MET*     3.1    32.3    +      -       +      +
    404A  PHE*     3.8     5.4    -      -       -      +
    406A  ARG*     1.3    76.2    -      -       -      +
    408A  LEU*     1.3    62.8    +      -       -      +
    410A  LYS*     3.2    20.1    +      -       -      +
    411A  LEU      4.0     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 408 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    359A  LEU*     4.9     0.2    -      -       +      -
    362A  ILE*     4.4    10.3    -      -       +      -
    386A  VAL*     4.4    16.2    -      -       +      -
    389A  LEU*     4.2    14.8    -      -       +      -
    404A  PHE*     3.4    47.5    +      -       +      +
    405A  PRO*     3.1    11.6    +      -       +      +
    407A  MET*     1.3    73.6    -      -       -      +
    409A  MET*     1.3    58.0    +      -       +      +
    410A  LYS      3.0     5.6    -      -       -      -
    411A  LEU*     2.7    51.6    +      -       +      +
    412A  VAL*     3.8     4.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 409 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405A  PRO*     2.9    25.1    +      -       +      +
    406A  ARG*     3.6    13.2    -      -       -      +
    407A  MET      3.3     0.6    -      -       -      -
    408A  LEU*     1.3    78.1    -      -       -      +
    410A  LYS*     1.3    63.7    +      -       -      +
    411A  LEU      3.2     0.2    -      -       -      -
    412A  VAL*     3.3    41.1    -      -       +      +
    413A  SER*     3.7     8.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 410 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300A  LEU*     5.8     0.9    -      -       +      -
    342A  PHE*     3.7    27.2    -      -       +      -
    345A  ALA*     3.8    43.6    +      -       -      +
    346A  MET*     3.8    32.8    -      -       +      +
    349A  LEU*     4.0    12.8    -      -       +      +
    359A  LEU*     5.2     1.8    -      -       +      -
    406A  ARG      3.4    14.8    +      -       -      +
    407A  MET      3.2    12.7    +      -       -      +
    408A  LEU      3.0     0.8    -      -       -      -
    409A  MET*     1.3    80.2    +      -       -      +
    411A  LEU*     1.3    60.1    +      -       +      +
    412A  VAL      3.2     0.2    -      -       -      -
    413A  SER*     3.6     9.1    +      -       -      -
    414A  LEU*     2.9    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 411 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296A  GLU*     5.5     0.5    -      -       -      +
    300A  LEU*     5.2     1.8    -      -       +      -
    359A  LEU*     3.8    48.2    -      -       +      +
    362A  ILE*     3.6    26.5    -      -       +      -
    363A  SER*     4.5     9.2    -      -       -      -
    408A  LEU*     2.7    34.6    +      -       +      +
    410A  LYS*     1.3    72.8    -      -       -      +
    412A  VAL*     1.3    67.3    +      -       +      +
    414A  LEU*     3.5    22.9    -      -       +      +
    415A  ARG*     3.2    23.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 412 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408A  LEU      4.3     2.2    -      -       -      +
    409A  MET*     3.3    44.4    -      -       +      +
    411A  LEU*     1.3    78.0    -      -       +      +
    413A  SER*     1.3    58.8    +      -       -      +
    415A  ARG*     2.9    29.8    +      -       -      +
    416A  THR*     3.5     8.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 413 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342A  PHE*     4.0    20.6    -      -       -      -
    409A  MET      3.7     8.7    +      -       -      -
    410A  LYS*     3.6    15.7    +      -       -      +
    412A  VAL*     1.3    76.3    -      -       -      +
    414A  LEU*     1.3    64.1    +      -       -      +
    416A  THR*     3.0    21.2    +      -       -      +
    417A  LEU*     3.0    14.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 414 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296A  GLU*     3.6    35.8    -      -       +      +
    299A  LEU*     3.8    33.7    -      -       +      -
    300A  LEU*     3.6    34.1    -      -       +      -
    342A  PHE*     3.7    24.3    -      -       +      -
    363A  SER*     4.6     1.8    -      -       -      +
    410A  LYS      2.9    15.2    +      -       -      +
    411A  LEU*     3.5    22.0    -      -       +      +
    412A  VAL      3.3     0.2    -      -       -      -
    413A  SER*     1.3    76.7    -      -       -      +
    415A  ARG*     1.3    55.8    +      -       -      +
    417A  LEU*     3.5     5.6    +      -       +      +
    418A  SER*     3.0    26.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 415 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296A  GLU*     3.6    16.3    +      -       -      -
    366A  SER*     3.5    21.2    +      -       -      -
    368A  ASP*     2.8    44.1    +      -       -      -
    369A  ARG*     3.2    20.0    -      -       -      +
    411A  LEU      3.2    15.4    +      -       -      +
    412A  VAL*     2.9    16.7    +      -       -      +
    414A  LEU*     1.3    69.9    -      -       -      +
    416A  THR*     1.3    66.9    +      -       -      +
    418A  SER*     3.3     7.2    -      -       -      -
    419A  SER*     3.3    19.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 416 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    412A  VAL*     3.5     8.9    +      -       -      +
    413A  SER*     3.0    12.1    +      -       -      -
    415A  ARG*     1.3    76.5    -      -       -      +
    417A  LEU*     1.3    59.7    -      -       +      +
    419A  SER*     3.0    12.4    +      -       -      +
    420A  VAL*     3.0    40.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 417 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299A  LEU*     3.8    27.6    -      -       +      -
    335A  PHE*     4.1    15.0    -      -       +      -
    338A  PRO*     3.7    36.3    -      -       +      +
    339A  ILE*     4.1     5.2    -      -       -      +
    342A  PHE*     3.7    43.5    -      -       +      -
    413A  SER      3.0    11.7    +      -       -      +
    414A  LEU*     3.6    12.6    -      -       +      +
    416A  THR*     1.3    76.5    -      -       -      +
    418A  SER*     1.3    56.3    +      -       -      +
    420A  VAL*     3.1     9.2    +      -       +      +
    421A  HIS*     2.9    30.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 418 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292A  THR*     4.3    10.4    +      -       -      +
    295A  ILE*     3.6    21.6    -      -       -      +
    296A  GLU*     3.4    29.5    +      -       -      -
    299A  LEU*     4.6     1.6    -      -       -      +
    369A  ARG*     5.2     0.2    +      -       -      -
    414A  LEU      3.0     9.1    +      -       -      -
    415A  ARG*     3.3    13.5    -      -       -      -
    417A  LEU*     1.3    75.4    -      -       -      +
    419A  SER*     1.3    58.3    +      -       -      +
    421A  HIS*     3.4    13.0    +      -       -      +
    422A  SER*     3.2    20.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 419 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    415A  ARG      3.3     8.0    +      -       -      -
    416A  THR*     3.0    17.9    +      -       -      +
    418A  SER*     1.3    76.4    -      -       -      +
    420A  VAL*     1.3    61.4    +      -       -      +
    421A  HIS      3.1     1.6    -      -       -      -
    422A  SER*     2.8    26.3    +      -       -      +
    423A  GLU*     3.0    21.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 420 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    332A  GLN*     5.4     0.7    +      -       -      -
    334A  GLU      3.4    26.9    -      -       -      +
    335A  PHE*     3.8    19.3    -      -       +      +
    338A  PRO*     4.4    12.1    -      -       +      -
    416A  THR*     3.0    32.8    +      -       +      +
    417A  LEU*     3.1    14.1    +      -       +      +
    419A  SER*     1.3    75.0    -      -       -      +
    421A  HIS*     1.3    56.1    +      -       -      +
    423A  GLU*     3.3    21.0    +      -       +      +
    424A  GLN*     3.0    25.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 421 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295A  ILE*     3.7    26.7    -      -       +      +
    335A  PHE*     3.7    18.1    -      +       +      -
    417A  LEU      2.9    13.0    +      -       -      +
    418A  SER      3.4    12.8    +      -       -      +
    420A  VAL*     1.3    74.1    -      -       -      +
    422A  SER*     1.3    60.9    +      -       -      +
    424A  GLN*     3.2     6.3    +      -       +      +
    425A  VAL*     3.0    41.4    +      -       +      +
    443A  TRP*     3.3    56.3    -      +       -      -
    501A  4KQ      3.2    31.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 422 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418A  SER      3.2    12.1    +      -       -      -
    419A  SER*     2.8    22.9    +      -       -      -
    421A  HIS*     1.3    73.6    +      -       -      +
    423A  GLU*     1.3    58.3    +      -       -      +
    425A  VAL*     3.2     8.1    +      -       -      +
    426A  PHE*     3.0    30.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 423 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    332A  GLN*     3.9     9.5    +      -       -      +
    334A  GLU*     6.1     1.6    -      -       -      +
    419A  SER*     3.0    21.0    +      -       -      +
    420A  VAL*     3.6    21.6    -      -       +      +
    422A  SER*     1.3    74.9    -      -       -      +
    424A  GLN*     1.3    57.6    +      -       -      +
    426A  PHE*     3.7    10.2    +      -       -      +
    427A  ALA*     3.1    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 424 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    330A  GLY      4.8     0.9    -      -       -      +
    331A  LEU*     3.4    10.6    -      -       -      +
    332A  GLN*     2.9    50.1    +      -       -      +
    335A  PHE*     3.3    33.8    -      -       +      +
    420A  VAL      3.0    13.6    +      -       -      +
    421A  HIS*     3.3    14.6    -      -       -      +
    422A  SER      3.1     0.2    -      -       -      -
    423A  GLU*     1.3    73.7    -      -       -      +
    425A  VAL*     1.3    64.8    +      -       -      +
    427A  ALA*     3.1    12.3    +      -       -      +
    428A  LEU*     3.2    21.4    +      -       +      +
    501A  4KQ      3.3    27.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 425 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    421A  HIS*     3.0    45.2    +      -       +      +
    422A  SER*     3.2     9.8    +      -       -      +
    424A  GLN*     1.3    74.5    -      -       -      +
    426A  PHE*     1.3    63.2    +      -       -      +
    428A  LEU*     3.3    20.7    +      -       -      +
    429A  ARG*     3.3    14.8    +      -       +      +
    435A  LEU*     4.1    10.5    -      -       +      +
    443A  TRP*     3.6    27.6    -      -       +      +
    444A  ASP*     3.5    23.6    -      -       -      +
    445A  VAL*     5.5     3.1    -      -       +      +
    501A  4KQ      4.4     8.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 426 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    422A  SER      3.0    16.4    +      -       -      +
    423A  GLU*     4.0     8.5    -      -       -      +
    425A  VAL*     1.3    78.8    -      -       -      +
    427A  ALA*     1.3    62.5    +      -       +      +
    429A  ARG*     3.1    30.6    +      -       +      +
    430A  LEU*     3.4    40.0    +      -       +      +
    445A  VAL*     6.3     2.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 427 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    332A  GLN*     3.7    26.5    -      -       -      +
    423A  GLU      3.1    19.6    +      -       -      +
    424A  GLN*     3.1     7.1    +      -       -      +
    426A  PHE*     1.3    74.6    -      -       +      +
    428A  LEU*     1.3    63.8    +      -       -      +
    430A  LEU*     3.3    18.6    +      -       +      +
    431A  GLN*     3.2    29.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 428 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254A  PHE*     4.2     8.3    -      -       +      -
    330A  GLY      4.2    12.1    -      -       -      +
    331A  LEU*     6.2     0.2    -      -       +      -
    424A  GLN*     3.2    19.5    +      -       -      +
    425A  VAL*     3.4    11.4    -      -       -      +
    426A  PHE      3.3     0.2    -      -       -      -
    427A  ALA*     1.3    74.2    -      -       -      +
    429A  ARG*     1.3    61.2    +      -       +      +
    431A  GLN*     2.9    48.2    +      -       -      +
    433A  LYS*     3.3    40.0    +      -       +      +
    435A  LEU*     3.9    20.6    -      -       +      -
    501A  4KQ      3.3    37.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 429 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    425A  VAL*     3.3    15.5    -      -       +      +
    426A  PHE*     3.1    22.9    +      -       +      +
    428A  LEU*     1.3    78.7    -      -       -      +
    430A  LEU*     1.3    59.0    +      -       +      +
    431A  GLN      3.0    13.2    -      -       -      +
    433A  LYS      5.1     2.9    +      -       -      -
    434A  LYS*     5.9     7.0    -      -       -      +
    435A  LEU*     6.1     1.1    -      -       -      -
    444A  ASP*     3.2    34.7    +      -       -      +
    445A  VAL*     4.5    14.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 430 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    426A  PHE*     3.7    42.8    -      -       +      +
    427A  ALA*     3.3    17.7    +      -       +      +
    429A  ARG*     1.3    81.7    -      -       +      +
    431A  GLN*     1.3    58.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 431 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250A  ARG*     5.2     2.8    -      -       -      +
    330A  GLY      4.1     7.7    +      -       -      -
    332A  GLN*     5.5     1.4    -      -       -      +
    427A  ALA*     3.2    25.1    +      -       -      +
    428A  LEU*     2.9    32.3    +      -       -      +
    429A  ARG      3.0    10.7    -      -       -      +
    430A  LEU*     1.3    76.6    -      -       -      +
    432A  ASP*     1.3    60.7    +      -       -      +
    433A  LYS*     3.2    41.0    +      -       +      +
----------------------------------------------------------
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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