Contacts of the helix formed by residues 113 - 135 (chain B) in PDB entry 1YWT


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 ASP 113 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35B  GLU*     5.4     1.9    -      -       -      +
     41B  ARG*     5.2     4.4    +      -       -      +
    111B  ALA*     5.0     2.8    -      -       -      +
    112B  GLY*     1.3    79.5    +      -       -      +
    114B  ALA*     1.3    63.5    +      -       -      +
    115B  GLU*     4.1     5.4    -      -       +      +
    116B  SER*     2.9    37.6    +      -       -      +
    117B  ARG*     3.1    12.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 114 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112B  GLY      3.5     1.2    +      -       -      -
    113B  ASP*     1.3    72.2    -      -       -      +
    115B  GLU*     1.3    59.5    +      -       +      +
    117B  ARG*     3.3    14.2    +      -       -      +
    118B  VAL*     2.9    37.0    +      -       -      +
    157B  ILE*     4.2     2.7    -      -       +      -
    161B  GLU*     3.4    49.8    +      -       +      +
    162B  MET*     4.7     5.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 115 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41B  ARG*     4.0     9.6    +      -       -      +
    113B  ASP*     3.3     5.5    -      -       +      +
    114B  ALA*     1.3    76.1    -      -       +      +
    116B  SER*     1.3    59.8    +      -       -      +
    118B  VAL*     3.9     0.7    -      -       -      +
    119B  PHE*     2.9    31.4    +      -       -      +
    162B  MET*     3.4    24.0    -      -       +      -
    166B  ASN*     3.6    19.5    +      -       -      +
    167B  PRO*     5.9     0.5    -      -       -      +
    168B  ILE*     2.9    30.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 116 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36B  LEU      5.8     1.6    -      -       -      -
     41B  ARG*     3.8    27.5    -      -       -      +
    111B  ALA*     3.7    16.1    -      -       -      +
    113B  ASP*     2.9    42.9    +      -       -      +
    115B  GLU*     1.3    79.5    -      -       -      +
    117B  ARG*     1.3    59.7    +      -       -      +
    119B  PHE*     3.6     1.2    -      -       -      +
    120B  TYR*     2.8    43.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 117 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109B  LYS*     3.7    48.2    +      -       +      +
    111B  ALA*     4.9     4.3    -      -       +      +
    112B  GLY      3.2    23.7    +      -       -      +
    113B  ASP      3.1    10.3    +      -       -      +
    114B  ALA*     3.7    17.3    -      -       -      +
    115B  GLU      3.2     0.2    -      -       -      -
    116B  SER*     1.3    82.3    +      -       -      +
    118B  VAL*     1.3    64.6    +      -       -      +
    120B  TYR*     3.5     5.2    +      -       -      +
    121B  LEU*     3.1    33.7    +      -       +      +
    157B  ILE*     3.6    36.6    -      -       +      +
    161B  GLU*     3.6    23.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 118 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114B  ALA      2.9    22.1    +      -       -      +
    115B  GLU      3.9     2.7    -      -       -      +
    117B  ARG*     1.3    73.2    -      -       -      +
    119B  PHE*     1.3    62.3    +      -       -      +
    121B  LEU*     3.3     1.9    +      -       -      +
    122B  LYS*     2.8    29.9    +      -       +      +
    154B  ALA*     3.7    16.8    -      -       +      +
    157B  ILE*     3.5    26.0    -      -       +      -
    158B  SER*     4.1     5.4    -      -       -      +
    162B  MET*     4.0    16.4    -      -       -      -
    168B  ILE*     4.0    18.8    -      -       +      +
    172B  LEU*     3.7    33.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 119 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41B  ARG*     3.6    57.0    -      -       +      +
     42B  ASN*     4.2    16.6    -      -       -      -
     44B  LEU*     5.8     0.4    -      -       +      -
     45B  SER*     3.7    24.2    -      -       -      -
    115B  GLU      2.9    19.1    +      -       -      +
    116B  SER      3.6     5.2    -      -       -      +
    118B  VAL*     1.3    78.0    -      -       -      +
    120B  TYR*     1.3    67.0    +      +       -      +
    122B  LYS*     3.3    10.3    +      -       +      +
    123B  MET*     3.0    46.8    +      -       +      +
    168B  ILE*     4.1    23.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 120 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35B  GLU*     6.6     0.2    -      -       +      -
     36B  LEU*     3.4    27.6    +      -       -      +
     41B  ARG*     3.1    38.0    +      -       +      +
     44B  LEU*     4.7     6.1    -      -       +      -
    103B  LEU*     3.8    14.2    -      -       +      +
    107B  LEU*     3.6    54.4    -      -       +      +
    108B  ILE*     4.0    23.2    -      -       +      +
    109B  LYS      5.4     0.2    -      -       -      -
    111B  ALA*     5.4     6.5    -      -       +      -
    116B  SER*     2.8    34.1    +      -       -      +
    117B  ARG*     4.0     4.3    -      -       -      +
    119B  PHE*     1.3    84.4    -      +       -      +
    121B  LEU*     1.3    58.2    +      -       -      +
    123B  MET*     3.2     7.5    +      -       -      +
    124B  LYS*     3.0    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 121 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108B  ILE*     4.1    32.8    -      -       +      -
    109B  LYS*     6.2     0.4    -      -       +      +
    117B  ARG*     3.1    22.9    +      -       +      +
    120B  TYR*     1.3    72.8    -      -       -      +
    122B  LYS*     1.3    65.5    +      -       -      +
    124B  LYS*     3.2    16.8    +      -       +      +
    125B  GLY*     3.0    17.0    +      -       -      -
    150B  ALA*     3.7    20.7    -      -       -      +
    153B  GLU*     4.0    34.5    -      -       +      +
    154B  ALA*     3.7    18.2    -      -       +      +
    157B  ILE*     3.9    26.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 122 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118B  VAL*     2.8    19.3    +      -       +      +
    119B  PHE*     3.5    12.6    -      -       +      +
    121B  LEU*     1.3    76.1    -      -       -      +
    123B  MET*     1.3    58.9    +      -       -      +
    125B  GLY*     2.9     3.7    +      -       -      +
    126B  ASP*     2.8    59.0    +      -       -      +
    151B  TYR*     3.7     5.8    -      -       +      -
    154B  ALA*     4.1     1.0    -      -       -      +
    168B  ILE*     4.6     7.9    -      -       +      +
    171B  GLY*     3.4    32.5    -      -       -      -
    172B  LEU*     3.7    38.1    -      -       +      +
    175B  ASN*     3.1     4.2    -      -       -      +
      7D  TYR*     2.7    28.1    +      -       -      -
      8D  PRO*     4.0     7.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 123 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44B  LEU*     4.1    31.6    -      -       +      +
     45B  SER*     4.2    20.9    -      -       -      -
     48B  TYR*     4.8     4.5    -      -       +      -
     99B  VAL*     3.7    22.7    -      -       +      -
    103B  LEU*     4.0    19.3    -      -       +      -
    119B  PHE*     3.0    35.5    +      -       +      +
    120B  TYR*     3.3    12.1    -      -       -      +
    122B  LYS*     1.3    78.0    -      -       -      +
    124B  LYS*     1.3    61.4    +      -       -      +
    126B  ASP*     3.4     9.4    +      -       -      +
    127B  TYR*     3.0    50.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 124 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100B  LEU*     3.8    10.1    -      -       +      +
    103B  LEU*     3.8    11.4    -      -       +      +
    104B  ASP*     2.5    32.0    +      -       -      +
    108B  ILE*     3.3    25.9    -      -       +      +
    120B  TYR      3.0    12.8    +      -       -      +
    121B  LEU*     3.4    16.2    -      -       +      +
    122B  LYS      3.1     0.2    -      -       -      -
    123B  MET*     1.3    75.9    -      -       -      +
    125B  GLY*     1.3    63.0    +      -       -      +
    127B  TYR      3.5     0.2    +      -       -      -
    128B  TYR*     3.1    61.6    +      -       +      -
    146B  SER      5.4     1.3    -      -       -      -
    150B  ALA*     3.9    15.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 125 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121B  LEU      3.0     9.6    +      -       -      -
    122B  LYS      2.9     7.5    +      -       -      -
    124B  LYS*     1.3    76.8    -      -       -      +
    126B  ASP*     1.3    54.9    +      -       -      +
    128B  TYR*     3.3     2.6    +      -       -      +
    129B  ARG*     2.8    30.1    +      -       -      +
    147B  ALA*     3.8    20.5    -      -       -      +
    150B  ALA*     3.8     4.6    -      -       -      +
    151B  TYR*     3.3    21.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 126 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122B  LYS*     2.8    46.5    +      -       -      +
    123B  MET*     3.7    10.3    -      -       -      +
    124B  LYS      3.4     0.2    -      -       -      -
    125B  GLY*     1.3    73.9    -      -       -      +
    127B  TYR*     1.3    62.7    +      -       +      +
    129B  ARG*     3.1     8.2    +      -       -      +
    130B  TYR*     2.9    52.3    +      -       +      +
    151B  TYR*     2.5    31.2    +      -       -      -
    175B  ASN*     2.9    24.2    +      -       -      +
      8D  PRO*     5.4     1.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 127 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45B  SER*     4.5     2.9    +      -       -      -
     48B  TYR*     3.3    33.4    +      -       +      +
     49B  LYS*     3.4     9.4    +      -       -      +
     52B  VAL*     4.2    14.8    -      -       +      +
     95B  VAL*     5.0     1.3    -      -       +      -
     96B  CYS*     3.9    18.1    -      -       +      -
     99B  VAL*     3.6    40.8    -      -       +      -
    100B  LEU*     4.0    24.5    -      -       +      -
    123B  MET*     3.0    43.8    +      -       +      +
    126B  ASP*     1.3    77.3    -      -       +      +
    128B  TYR*     1.3    65.6    +      -       -      +
    130B  TYR*     3.4    30.0    +      +       -      +
    131B  LEU*     3.1    27.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 128 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100B  LEU*     3.6    34.3    -      -       +      +
    104B  ASP*     6.2     0.2    -      -       -      -
    124B  LYS*     3.1    54.5    +      -       +      +
    125B  GLY      3.8     0.2    -      -       -      +
    127B  TYR*     1.3    76.3    -      -       -      +
    129B  ARG*     1.3    58.9    +      -       -      +
    131B  LEU*     3.1     9.5    +      -       +      -
    132B  ALA*     2.8    25.5    +      -       -      +
    143B  ILE*     3.1    26.5    -      -       +      +
    146B  SER*     3.1    41.2    -      -       -      -
    147B  ALA*     3.5    21.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 129 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56B  ARG*     4.2     4.6    -      -       -      +
    125B  GLY      2.8    14.1    +      -       -      +
    126B  ASP*     3.1    31.2    +      -       -      +
    128B  TYR*     1.3    78.6    -      -       -      +
    130B  TYR*     1.3    73.4    +      -       +      +
    132B  ALA*     3.1    10.0    +      -       -      +
    133B  GLU*     3.0    30.1    +      -       -      +
    147B  ALA*     4.0     5.1    -      -       -      +
    151B  TYR*     2.9    20.0    +      -       +      +
    175B  ASN*     3.4    16.5    +      -       -      +
    178B  VAL*     4.0    17.1    -      -       -      +
    179B  PHE*     3.9    32.1    -      -       +      +
    182B  GLU*     5.6     0.4    +      -       -      -
    183B  ILE*     3.8    18.1    -      -       +      +
      6D  SEP      2.8    43.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 130 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49B  LYS*     3.5    16.5    -      -       -      +
     52B  VAL*     3.9    17.3    -      -       +      -
     56B  ARG*     3.2    46.9    -      -       +      -
     92B  LEU*     4.5     7.9    -      -       +      +
     96B  CYS*     4.0     9.9    -      -       -      -
    126B  ASP*     2.9    35.4    +      -       +      +
    127B  TYR*     3.6    42.5    -      +       -      +
    128B  TYR      3.2     0.2    -      -       -      -
    129B  ARG*     1.3    86.7    -      -       -      +
    131B  LEU*     1.3    66.4    +      -       -      +
    133B  GLU*     3.0    26.4    +      -       -      +
    134B  VAL*     3.7    10.2    +      -       -      +
      6D  SEP      2.6    24.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 131 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92B  LEU*     4.7     0.9    -      -       +      -
     93B  GLN*     3.8    37.7    +      -       +      +
     96B  CYS*     3.5    22.4    -      -       +      -
     97B  ASP*     4.1    12.3    -      -       -      +
    100B  LEU*     3.6    31.2    -      -       +      -
    127B  TYR      3.1    14.0    +      -       -      +
    128B  TYR*     3.4    17.9    -      -       +      +
    130B  TYR*     1.3    76.1    -      -       -      +
    132B  ALA*     1.3    61.7    +      -       -      +
    134B  VAL*     3.4     9.9    +      -       -      +
    135B  ALA*     3.3    21.8    +      -       -      +
    143B  ILE*     3.9    20.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 132 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128B  TYR      2.8    12.7    +      -       -      +
    129B  ARG*     3.3    13.0    -      -       -      +
    130B  TYR      3.1     0.2    -      -       -      -
    131B  LEU*     1.3    76.2    -      -       -      +
    133B  GLU*     1.3    64.6    +      -       -      +
    134B  VAL      3.2     0.9    +      -       -      -
    135B  ALA*     3.4    12.4    +      -       -      -
    140B  LYS*     3.5    21.7    -      -       +      +
    143B  ILE*     3.5    15.2    -      -       +      +
    144B  ILE*     4.0    26.2    -      -       +      +
    147B  ALA*     5.8     0.2    -      -       +      -
    183B  ILE*     4.0    13.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 133 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56B  ARG*     3.0    52.3    +      -       -      +
     59B  TRP*     3.5    23.4    -      -       +      -
     60B  ARG*     5.2     4.1    +      -       -      +
    129B  ARG*     3.0    25.8    +      -       +      +
    130B  TYR*     3.0    16.1    +      -       -      +
    132B  ALA*     1.3    77.3    -      -       -      +
    134B  VAL*     1.3    63.7    +      -       +      +
    135B  ALA      4.9     1.4    -      -       -      +
    140B  LYS*     5.3     3.6    +      -       -      +
    182B  GLU*     5.2     5.5    -      -       -      +
    183B  ILE*     3.9    18.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 134 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59B  TRP*     3.6    41.0    -      -       +      +
     89B  GLU*     3.6    32.6    -      -       +      +
     92B  LEU*     4.7    16.6    -      -       +      -
     93B  GLN*     3.6    32.7    +      -       +      +
    130B  TYR      4.0    10.8    -      -       -      +
    131B  LEU*     3.4    10.1    +      -       -      +
    132B  ALA      3.1     0.4    -      -       -      -
    133B  GLU*     1.3    86.3    -      -       +      +
    135B  ALA*     1.3    62.9    +      -       -      +
    136B  THR*     4.2     5.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 135 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93B  GLN*     5.5     4.0    -      -       -      +
    131B  LEU      3.3    15.6    +      -       -      +
    132B  ALA*     3.4     5.5    +      -       -      +
    133B  GLU      4.9     1.0    -      -       -      +
    134B  VAL*     1.3    82.9    -      -       +      +
    136B  THR*     1.3    65.8    +      -       -      +
    139B  ASP*     4.4     4.5    -      -       +      -
    140B  LYS*     3.3    40.5    +      -       +      +
    143B  ILE*     3.8    21.8    -      -       +      -
----------------------------------------------------------
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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