Contacts of the helix formed by residues 536 - 561 (chain A) in PDB entry 3L9X


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 GLY 536 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    535A  LEU*     1.3    78.0    -      -       -      +
    537A  PRO*     1.3    74.2    -      -       -      +
    538A  TYR      3.2     3.3    +      -       -      -
    539A  GLU*     3.4     4.4    +      -       -      +
    540A  ALA*     3.0    21.7    +      -       -      +
   1011B  PRO*     6.2     0.4    -      -       -      -
   1012B  HIS*     3.4    23.1    +      -       -      -
   2402B   ZN      3.9    17.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 537 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    527A  ARG*     4.7     1.2    +      -       -      -
    531A  GLU*     3.7    37.7    -      -       +      +
    535A  LEU      3.6     3.6    -      -       -      +
    536A  GLY*     1.3    82.4    -      -       -      +
    538A  TYR*     1.3    63.1    +      -       -      +
    540A  ALA*     3.4     2.4    +      -       -      +
    541A  ARG*     3.0    23.6    +      -       -      +
   1012B  HIS*     5.3     0.7    -      -       +      -
   1036B  TYR      4.2     1.3    -      -       -      +
   1037B  GLN*     3.2    54.5    -      -       +      +
   1040B  PRO*     3.7    23.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 538 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    536A  GLY      3.2     0.8    -      -       -      -
    537A  PRO*     1.3    76.7    -      -       -      +
    539A  GLU*     1.3    68.0    +      -       -      +
    540A  ALA      3.1     0.3    +      -       -      -
    541A  ARG*     3.1    17.0    +      -       -      +
    542A  GLU*     3.0    54.9    +      -       +      +
   1076A  LEU*     3.9    23.0    -      -       -      +
   1080A  LYS*     4.2     3.3    -      -       -      -
   1009B  PRO*     3.3    28.3    -      -       +      +
   1010B  TYR*     3.7    17.5    -      +       -      -
   1011B  PRO*     6.3     0.2    -      -       +      -
   1036B  TYR*     3.5    45.8    +      +       +      +
   1040B  PRO*     3.7    24.0    -      -       +      +
   1042B  PHE*     3.6    21.9    -      +       -      -
----------------------------------------------------------
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Residues in contact with GLU 539 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    535A  LEU*     3.8    15.6    -      -       +      +
    536A  GLY*     3.4    12.5    +      -       -      +
    538A  TYR*     1.3    80.9    -      -       -      +
    540A  ALA*     1.3    58.2    +      -       -      +
    542A  GLU*     3.4    14.2    +      -       +      +
    543A  ARG*     3.0    61.1    +      -       +      +
   1009B  PRO      5.0     0.2    +      -       -      -
   1010B  TYR*     4.1    21.6    -      -       +      -
   1013B  HIS*     2.7    36.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 540 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    527A  ARG*     3.6    25.0    -      -       +      +
    530A  LEU*     4.1    20.8    -      -       +      +
    531A  GLU*     4.4     4.0    -      -       +      +
    535A  LEU*     3.7    20.1    -      -       +      +
    536A  GLY      3.0    17.0    +      -       -      +
    537A  PRO*     3.5     8.7    -      -       +      +
    538A  TYR      3.1     0.2    -      -       -      -
    539A  GLU*     1.3    73.9    -      -       -      +
    541A  ARG*     1.3    63.9    +      -       -      +
    543A  ARG*     3.3     6.2    +      -       -      +
    544A  ALA      3.1    17.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 541 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    527A  ARG*     3.4    28.6    -      -       -      +
    537A  PRO      3.0    17.0    +      -       -      +
    538A  TYR*     3.1    19.7    +      -       -      +
    540A  ALA*     1.3    71.8    -      -       -      +
    542A  GLU*     1.3    65.6    +      -       -      +
    544A  ALA*     3.2     4.3    +      -       -      +
    545A  ASP*     2.7    68.8    +      -       -      +
   1041A  ASP      3.7    14.3    +      -       -      -
   1042A  PHE*     3.2    25.5    +      -       -      +
   1076A  LEU*     6.1     0.2    -      -       -      +
   1040B  PRO*     2.8    29.8    +      -       +      +
   1041B  ASP*     3.4    29.2    -      -       -      +
   1042B  PHE*     3.5    22.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 542 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    538A  TYR*     3.0    42.0    +      -       +      +
    539A  GLU*     3.5    11.6    -      -       +      +
    541A  ARG*     1.3    83.7    -      -       -      +
    543A  ARG*     1.3    57.4    +      -       +      +
    545A  ASP*     3.1    12.2    +      -       -      +
    546A  VAL*     3.0    32.6    +      -       +      +
   1080A  LYS*     2.7    35.4    +      -       -      -
   1010B  TYR*     2.6    31.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 543 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    530A  LEU*     4.5     8.4    -      -       +      +
    535A  LEU*     3.7    35.4    -      -       -      +
    539A  GLU*     3.0    43.2    +      -       +      +
    540A  ALA*     3.5     8.5    -      -       -      +
    541A  ARG      3.3     0.6    -      -       -      -
    542A  GLU*     1.3    77.1    -      -       +      +
    544A  ALA*     1.3    55.7    +      -       -      +
    546A  VAL*     3.5     8.1    +      -       -      +
    547A  PHE*     3.1    27.2    +      -       -      +
    417B  LEU*     3.7     6.7    -      -       +      +
    420B  SER      5.8     0.9    -      -       -      -
    421B  SER*     3.0    43.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 544 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    523A  LEU*     4.2    19.2    -      -       +      +
    527A  ARG*     3.8    24.9    -      -       +      -
    540A  ALA      3.1    13.1    +      -       -      +
    541A  ARG      3.4     8.5    -      -       -      +
    543A  ARG*     1.3    72.1    -      -       -      +
    545A  ASP*     1.3    57.5    +      -       -      +
    547A  PHE*     3.4     0.9    +      -       -      +
    548A  ARG*     2.7    40.3    +      -       -      +
    417B  LEU*     3.9    18.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 545 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    541A  ARG*     2.7    59.6    +      -       -      +
    542A  GLU*     3.3    12.9    -      -       -      +
    544A  ALA*     1.3    73.1    -      -       -      +
    546A  VAL*     1.3    63.7    +      -       +      +
    548A  ARG*     2.9    29.2    +      -       -      +
    549A  ARG*     3.1    32.5    +      -       -      +
   1041A  ASP*     5.6     1.2    -      -       -      +
   1043A  ASN*     3.5    26.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 546 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    542A  GLU*     3.0    18.3    +      -       +      +
    543A  ARG*     3.7    10.5    -      -       -      +
    545A  ASP*     1.3    74.3    -      -       +      +
    547A  PHE*     1.3    68.6    +      -       -      +
    549A  ARG*     3.5    15.9    +      -       -      +
    550A  PHE*     3.1    23.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 547 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    519A  PHE*     4.2     5.6    -      +       -      -
    523A  LEU*     3.3    31.6    -      -       +      -
    543A  ARG      3.1    17.8    +      -       -      +
    544A  ALA      3.8     1.3    -      -       -      +
    546A  VAL*     1.3    76.0    -      -       -      +
    548A  ARG*     1.3    61.1    +      -       -      +
    550A  PHE*     3.3    20.6    +      +       -      +
    551A  ASN*     2.8    54.8    +      -       +      +
    413B  ILE*     4.1    21.8    -      -       +      -
    416B  ARG*     3.4    52.3    -      -       +      -
    417B  LEU*     3.7    22.4    -      -       +      -
    420B  SER*     4.8     7.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 548 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    519A  PHE*     3.9    20.6    -      -       +      -
    520A  GLU*     2.8    39.4    +      -       -      -
    523A  LEU*     3.8    15.7    -      -       +      +
    527A  ARG*     6.0     2.0    -      -       -      +
    544A  ALA*     2.7    26.0    +      -       -      +
    545A  ASP*     2.9    36.3    +      -       -      +
    546A  VAL      3.4     0.2    -      -       -      -
    547A  PHE*     1.3    73.8    -      -       -      +
    549A  ARG*     1.3    54.7    +      -       -      +
    551A  ASN*     3.1     2.3    +      -       -      +
    552A  ILE*     2.8    57.9    +      -       +      +
   1041A  ASP*     6.0     2.0    -      -       -      +
   1043A  ASN*     4.2    15.4    -      -       -      +
    524B  LYS*     3.6    17.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 549 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    545A  ASP*     3.1    19.6    +      -       -      +
    546A  VAL*     3.8    16.6    -      -       -      +
    547A  PHE      3.3     0.2    -      -       -      -
    548A  ARG*     1.3    78.4    -      -       -      +
    550A  PHE*     1.3    63.6    +      -       -      +
    552A  ILE*     3.5     7.2    +      -       -      +
    553A  GLN*     3.1    28.6    +      -       +      +
   1039A  TYR*     5.0     1.6    -      -       -      -
   1043A  ASN*     2.9    43.0    +      -       -      +
   1044A  ILE      3.7    14.1    +      -       -      -
   1045A  ASP*     3.7    39.1    +      -       -      +
   1046A  ILE      5.5     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 550 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    546A  VAL*     3.1    17.4    +      -       +      +
    547A  PHE*     3.6    19.7    -      +       -      +
    549A  ARG*     1.3    80.2    -      -       -      +
    551A  ASN*     1.3    72.1    +      -       -      +
    553A  GLN*     3.4    10.0    +      -       +      +
    554A  MET*     3.1    46.8    +      -       +      +
    416B  ARG*     3.3    32.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 551 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    516A  ARG*     2.7    41.6    +      -       -      +
    519A  PHE*     3.4    12.2    -      -       +      -
    547A  PHE*     2.8    46.6    +      -       +      +
    548A  ARG      3.6     3.6    -      -       -      +
    550A  PHE*     1.3    81.6    -      -       +      +
    552A  ILE*     1.3    62.2    +      -       -      +
    554A  MET*     3.1    25.6    +      -       -      +
    555A  VAL*     3.0    22.7    +      -       -      +
    413B  ILE*     4.2     8.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 552 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    503A  TYR*     4.8     7.9    +      -       +      +
    516A  ARG*     4.0    20.2    -      -       -      +
    519A  PHE*     5.2     1.3    -      -       +      -
    548A  ARG*     2.8    49.0    +      -       +      +
    549A  ARG*     3.9     6.7    -      -       -      +
    551A  ASN*     1.3    73.3    -      -       -      +
    553A  GLN*     1.3    57.3    +      -       -      +
    555A  VAL*     3.4     3.2    +      -       -      +
    556A  GLU*     2.9    47.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 553 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    549A  ARG*     3.1    21.7    +      -       +      +
    550A  PHE*     3.7     9.5    -      -       +      +
    552A  ILE*     1.3    77.5    -      -       -      +
    554A  MET*     1.3    61.8    +      -       -      +
    556A  GLU*     3.7     5.9    +      -       -      +
    557A  GLU*     3.2    21.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 554 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    550A  PHE*     3.1    38.9    +      -       +      +
    551A  ASN*     3.1    30.5    +      -       -      +
    553A  GLN*     1.3    77.5    -      -       -      +
    555A  VAL*     1.3    68.9    +      -       +      +
    557A  GLU*     3.3    12.3    +      -       -      +
    558A  MET*     3.1    39.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 555 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    500A  VAL*     3.9    26.5    -      -       +      -
    503A  TYR*     3.2    39.7    -      -       +      -
    504A  ILE*     4.6     1.5    -      -       +      +
    516A  ARG*     3.9    23.3    -      -       -      +
    551A  ASN*     3.0    19.3    +      -       -      +
    552A  ILE*     4.2     3.4    -      -       -      +
    554A  MET*     1.3    85.2    -      -       +      +
    556A  GLU*     1.3    59.8    +      -       -      +
    558A  MET*     3.3    19.3    +      -       -      +
    559A  ALA*     2.9    26.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 556 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    503A  TYR*     2.3    34.6    +      -       -      +
    507A  ARG*     2.8    41.8    +      -       -      +
    512A  GLU      4.9     0.8    -      -       -      +
    552A  ILE*     2.9    31.6    +      -       +      +
    553A  GLN*     3.9     6.5    -      -       -      +
    555A  VAL*     1.3    74.3    -      -       -      +
    557A  GLU*     1.3    61.9    +      -       -      +
    559A  ALA*     3.3     1.8    +      -       -      +
    560A  MET*     3.0    39.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 557 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    553A  GLN*     3.2    13.8    +      -       +      +
    554A  MET*     3.5    12.7    -      -       -      +
    555A  VAL      3.3     0.2    -      -       -      -
    556A  GLU*     1.3    73.0    -      -       -      +
    558A  MET*     1.3    67.7    +      -       -      +
    560A  MET*     3.3     7.6    +      -       +      +
    561A  VAL*     3.0    39.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 558 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    500A  VAL*     4.4    13.9    -      -       +      -
    504A  ILE*     3.9    23.0    -      -       +      +
    508A  GLN*     5.0     0.2    +      -       -      -
    554A  MET*     3.1    35.9    +      -       +      +
    555A  VAL*     3.3    26.9    +      -       -      +
    557A  GLU*     1.3    77.6    -      -       +      +
    559A  ALA*     1.3    62.1    +      -       -      +
    561A  VAL*     3.5    25.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 559 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    503A  TYR*     4.6     0.9    -      -       +      -
    504A  ILE*     4.0    20.8    -      -       +      +
    507A  ARG*     4.1    30.3    -      -       +      -
    508A  GLN*     2.9    28.6    +      -       +      +
    555A  VAL      2.9    17.2    +      -       -      +
    556A  GLU*     3.5     9.4    -      -       -      +
    557A  GLU      3.2     0.2    -      -       -      -
    558A  MET*     1.3    75.3    -      -       -      +
    560A  MET*     1.3    73.6    +      -       -      +
    561A  VAL      4.0     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 560 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    507A  ARG*     4.4    23.6    -      -       +      +
    508A  GLN*     5.1     2.7    +      -       +      -
    556A  GLU*     3.0    26.5    +      -       +      +
    557A  GLU*     3.8     6.5    -      -       +      +
    559A  ALA*     1.3    84.9    -      -       +      +
    561A  VAL*     1.3    67.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 561 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    508A  GLN*     4.9     6.7    -      -       -      -
    557A  GLU*     3.0    40.0    +      -       +      +
    558A  MET*     3.5    20.2    -      -       -      +
    559A  ALA      4.0     3.4    -      -       -      -
    560A  MET*     1.3    81.6    -      -       +      +
----------------------------------------------------------
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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