Contacts of the helix formed by residues 214 - 238 (chain A) in PDB entry 1ESE


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with GLN 214 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    194A  THR*     2.8    35.2    +      -       -      +
    195A  THR*     4.5     2.1    +      -       -      +
    197A  CYS*     4.6     0.8    -      -       -      +
    198A  LEU*     3.2    50.1    -      -       +      +
    212A  ILE      3.2     4.4    +      -       -      +
    213A  PRO*     1.3    65.8    -      -       -      +
    215A  ASP*     1.3    57.3    +      -       +      +
    216A  ALA      3.2     4.9    -      -       -      -
    217A  LEU*     3.2    28.8    -      -       -      +
    218A  PRO*     3.4     7.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 215 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139A  ALA      4.7     5.9    -      -       -      +
    142A  GLY*     4.5    14.3    +      -       -      -
    143A  GLU*     5.3     5.4    +      -       -      +
    213A  PRO*     3.6    19.1    -      -       -      +
    214A  GLN*     1.3    79.3    -      -       +      +
    216A  ALA*     1.3    66.3    +      -       -      +
    217A  LEU      3.3     0.4    -      -       -      -
    218A  PRO*     3.1    14.6    -      -       -      +
    219A  VAL*     4.0    11.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 216 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117A  CYS*     4.3     0.7    -      -       -      -
    141A  CYS*     3.1    36.1    -      -       -      -
    142A  GLY*     4.0    11.9    -      -       -      +
    212A  ILE*     3.8     7.6    -      -       +      -
    213A  PRO*     2.6    26.8    +      -       +      +
    215A  ASP*     1.3    81.1    -      -       -      +
    217A  LEU*     1.3    63.0    +      -       -      +
    219A  VAL*     3.1    17.4    +      -       -      +
    220A  LEU*     3.5    12.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 217 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190A  VAL*     3.8    17.3    -      -       +      +
    194A  THR*     3.3    20.9    -      -       +      +
    197A  CYS*     3.3    42.2    -      -       +      -
    209A  PHE*     4.1    26.2    -      -       +      -
    212A  ILE*     3.9    23.3    -      -       +      +
    213A  PRO      3.2    10.8    +      -       -      +
    214A  GLN*     3.2    24.7    -      -       -      +
    216A  ALA*     1.3    75.0    -      -       -      +
    218A  PRO*     1.3    58.5    -      -       -      +
    220A  LEU*     3.3    24.6    -      -       +      +
    221A  ASP      3.4     5.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 218 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190A  VAL*     5.4     0.4    -      -       +      -
    194A  THR*     4.0    16.1    -      -       -      +
    214A  GLN      3.4    12.8    -      -       -      +
    215A  ASP*     3.1    25.6    -      -       -      +
    217A  LEU*     1.3    85.3    -      -       +      +
    219A  VAL*     1.3    59.8    +      -       +      +
    221A  ASP*     3.9     8.1    -      -       +      +
    222A  GLN*     3.3    21.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 219 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141A  CYS*     6.4     0.7    -      -       -      -
    142A  GLY*     3.8    26.2    -      -       -      +
    145A  PHE*     3.9    31.0    -      -       +      -
    146A  GLY*     4.6     6.7    -      -       -      +
    154A  LEU*     6.0     0.7    -      -       +      -
    215A  ASP      4.0    15.3    -      -       -      +
    216A  ALA*     3.1     8.0    +      -       -      +
    218A  PRO*     1.3    74.3    -      -       +      +
    220A  LEU*     1.3    57.5    +      -       +      +
    222A  GLN*     3.1    17.8    +      -       +      +
    223A  ILE*     2.6    48.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 220 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110A  PHE*     3.6    27.5    -      -       +      -
    113A  ILE*     3.5    33.4    -      -       +      +
    114A  LEU*     3.9    23.6    -      -       +      -
    117A  CYS*     5.4     7.4    -      -       -      -
    145A  PHE*     6.0     0.2    -      -       +      -
    189A  LEU*     6.3     0.2    -      -       +      -
    190A  VAL*     4.5    14.8    -      -       +      -
    209A  PHE*     5.1     6.1    -      -       +      -
    212A  ILE*     4.6    21.1    -      -       +      -
    216A  ALA      3.5     7.6    +      -       -      +
    217A  LEU*     3.3    18.8    -      -       +      +
    219A  VAL*     1.3    79.8    -      -       +      +
    221A  ASP*     1.3    59.9    +      -       -      +
    223A  ILE*     3.4     9.9    +      -       +      +
    224A  GLN*     3.1    20.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 221 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188A  ARG*     2.8    27.2    +      -       -      +
    190A  VAL*     3.0    35.1    -      -       +      +
    191A  PRO      4.7     3.1    -      -       -      +
    192A  GLU*     4.9     1.6    -      -       -      -
    217A  LEU      3.4     8.4    +      -       -      +
    218A  PRO*     3.9    10.5    -      -       +      +
    219A  VAL      3.3     0.4    -      -       -      -
    220A  LEU*     1.3    73.8    -      -       -      +
    222A  GLN*     1.3    56.7    -      -       -      +
    224A  GLN*     2.8     9.4    +      -       -      +
    225A  LYS*     2.6    35.4    +      -       -      +
    246A  TYR*     3.0    22.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 222 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146A  GLY*     5.9     2.4    -      -       -      -
    154A  LEU*     5.4     4.9    -      -       -      +
    218A  PRO      3.3    13.0    +      -       -      +
    219A  VAL*     3.2    22.8    -      -       -      +
    221A  ASP*     1.3    77.4    +      -       -      +
    223A  ILE*     1.3    67.9    +      -       -      +
    225A  LYS*     3.2    17.8    +      -       -      +
    226A  ARG*     3.3    27.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 223 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108A  LEU*     3.7    26.2    -      -       +      +
    110A  PHE*     4.2     5.6    -      -       +      -
    113A  ILE*     4.1    27.4    -      -       +      -
    145A  PHE*     4.5     7.0    -      -       +      -
    154A  LEU*     3.8    42.6    -      -       +      -
    158A  PHE*     3.8     5.9    -      -       +      -
    219A  VAL*     2.6    46.3    +      -       +      +
    220A  LEU*     3.5     9.6    -      -       +      +
    222A  GLN*     1.3    79.1    -      -       -      +
    224A  GLN*     1.3    59.3    +      -       -      +
    226A  ARG*     3.5     6.2    -      -       -      +
    227A  LEU*     3.3    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 224 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110A  PHE*     4.6    16.5    -      -       +      -
    186A  TYR*     3.6    25.2    +      -       +      +
    187A  PRO      2.8    26.4    +      -       -      -
    189A  LEU*     3.1    39.4    +      -       +      +
    220A  LEU      3.1    12.1    +      -       -      +
    221A  ASP*     2.8    16.0    +      -       -      +
    223A  ILE*     1.3    70.7    -      -       -      +
    225A  LYS*     1.3    68.5    +      -       -      +
    227A  LEU*     3.8    10.5    -      -       +      +
    228A  ASN*     3.0    23.6    +      -       -      +
    246A  TYR*     3.7    20.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 225 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221A  ASP*     2.6    16.2    +      -       -      +
    222A  GLN*     3.4    13.9    -      -       -      +
    224A  GLN*     1.3    72.5    -      -       -      +
    226A  ARG*     1.3    49.7    +      -       -      +
    228A  ASN*     2.9    12.3    -      -       -      +
    229A  ASP*     2.8    59.0    +      -       -      +
    246A  TYR*     3.7    33.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 226 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154A  LEU*     4.2    12.7    -      -       -      +
    155A  ASP*     3.2    29.1    +      -       -      +
    158A  PHE*     2.9    60.3    -      -       +      +
    222A  GLN*     3.3    22.0    +      -       -      +
    223A  ILE*     3.5     7.2    -      -       -      +
    225A  LYS*     1.3    71.1    -      -       -      +
    227A  LEU*     1.3    55.4    +      -       -      +
    228A  ASN      3.1     1.1    -      -       -      -
    229A  ASP*     3.1     9.2    +      -       -      +
    230A  ALA*     2.5    38.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 227 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104A  GLY      4.4    10.5    -      -       -      +
    105A  GLY*     4.0    15.3    -      -       -      -
    108A  LEU*     4.4    16.8    -      -       +      -
    110A  PHE*     5.8     4.0    -      -       +      -
    158A  PHE*     3.4    15.8    -      -       +      -
    161A  VAL*     4.1    25.6    -      -       +      -
    186A  TYR*     3.7    33.4    -      -       +      -
    223A  ILE      3.3    13.8    +      -       -      +
    224A  GLN*     3.8    13.7    -      -       +      +
    226A  ARG*     1.3    81.4    -      -       -      +
    228A  ASN*     1.3    62.0    +      -       -      +
    230A  ALA*     3.1     0.9    +      -       -      +
    231A  MET*     3.1    33.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 228 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185A  GLY*     4.6     8.7    -      -       -      -
    186A  TYR*     4.6     3.4    +      -       -      +
    224A  GLN      3.0    14.4    +      -       -      +
    225A  LYS*     2.9    18.6    +      -       -      +
    227A  LEU*     1.3    71.8    -      -       -      +
    229A  ASP*     1.3    72.5    +      -       -      +
    231A  MET*     3.2     9.6    +      -       -      +
    232A  LYS*     2.9    26.8    +      -       -      +
    242A  PHE*     3.4    26.2    -      -       -      -
    244A  ASP*     3.2    19.8    +      -       -      +
    246A  TYR*     3.7    33.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 229 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225A  LYS*     2.8    52.3    +      -       -      +
    226A  ARG*     3.7     9.8    +      -       -      +
    228A  ASN*     1.3    81.0    -      -       -      +
    230A  ALA*     1.3    56.0    +      -       -      +
    232A  LYS*     3.4    20.6    +      -       +      +
    233A  LYS*     3.1    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 230 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158A  PHE*     4.5    11.9    -      -       +      +
    161A  VAL*     4.3    20.4    -      -       +      -
    162A  GLY*     5.7     4.8    -      -       -      +
    165A  LEU*     4.0     2.9    -      -       +      +
    226A  ARG      2.5    20.7    +      -       -      +
    227A  LEU*     3.1     9.4    +      -       -      +
    229A  ASP*     1.3    72.0    -      -       -      +
    231A  MET*     1.3    56.6    +      -       -      +
    233A  LYS*     3.5     8.8    +      -       -      +
    234A  ALA*     3.0    29.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 231 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103A  LEU      3.4    25.8    -      -       -      +
    104A  GLY*     5.3     0.7    -      -       -      -
    165A  LEU*     3.7    23.6    -      -       +      -
    183A  LEU*     3.7    20.3    -      -       +      +
    184A  VAL      3.4    26.7    -      -       -      +
    185A  GLY*     4.5     2.9    -      -       -      -
    186A  TYR*     3.6    31.2    -      -       +      -
    227A  LEU*     3.1    27.1    +      -       +      +
    228A  ASN*     3.6     9.2    -      -       -      +
    230A  ALA*     1.3    71.1    -      -       -      +
    232A  LYS*     1.3    65.1    +      -       -      +
    234A  ALA*     3.3     1.6    +      -       -      +
    235A  ALA*     2.9    27.4    +      -       -      +
    242A  PHE*     3.6    15.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 232 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228A  ASN*     2.9    16.0    +      -       -      +
    229A  ASP*     3.7    25.1    -      -       -      +
    231A  MET*     1.3    78.6    -      -       -      +
    233A  LYS*     1.3    62.9    +      -       -      +
    235A  ALA*     3.4     1.9    +      -       -      +
    236A  ALA*     3.1    21.7    +      -       -      +
    242A  PHE*     3.7    31.8    -      -       +      +
    244A  ASP*     3.0    28.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 233 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    162A  GLY*     6.5     1.8    -      -       -      -
    229A  ASP      3.1    13.6    +      -       -      +
    230A  ALA*     3.5     7.4    +      -       -      +
    232A  LYS*     1.3    73.5    -      -       -      +
    234A  ALA*     1.3    58.2    +      -       -      +
    236A  ALA*     3.0     6.0    +      -       +      -
    237A  ASP*     2.7    64.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 234 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    162A  GLY*     5.1     4.3    -      -       -      +
    165A  LEU*     3.7    35.2    -      -       +      -
    166A  GLU*     4.8     5.2    -      -       +      +
    169A  LEU*     3.1    15.3    -      -       +      +
    183A  LEU*     4.9     2.0    -      -       +      -
    230A  ALA      3.0    18.2    +      -       -      +
    231A  MET*     3.6     4.7    -      -       -      +
    232A  LYS      3.2     0.2    -      -       -      -
    233A  LYS*     1.3    78.8    -      -       -      +
    235A  ALA*     1.3    57.5    +      -       -      +
    237A  ASP*     3.7     5.1    -      -       -      +
    238A  GLY*     2.9    23.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 235 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169A  LEU*     3.6    11.2    -      -       -      +
    183A  LEU*     4.3     9.4    -      -       +      +
    231A  MET      2.9    17.0    +      -       -      +
    232A  LYS      3.9     1.8    -      -       -      +
    234A  ALA*     1.3    76.5    -      -       -      +
    236A  ALA*     1.3    66.1    +      -       -      +
    239A  GLY      3.1     2.6    +      -       -      -
    240A  ALA*     3.0    48.1    +      -       +      +
    241A  ASP      4.3     0.7    -      -       -      +
    242A  PHE*     3.8    25.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 236 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232A  LYS      3.1    13.5    +      -       -      +
    233A  LYS*     3.0    12.4    +      -       -      +
    235A  ALA*     1.3    80.3    -      -       -      +
    237A  ASP*     1.3    66.1    -      -       -      +
    238A  GLY      3.2     0.5    +      -       -      -
    239A  GLY*     3.6     6.9    +      -       -      -
    240A  ALA      4.9     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 237 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233A  LYS*     2.7    56.2    +      -       -      +
    234A  ALA*     3.7     5.3    -      -       -      +
    236A  ALA*     1.3    77.5    -      -       -      +
    238A  GLY*     1.3    54.9    +      -       -      +
    239A  GLY      3.6     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 238 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    166A  GLU*     6.5     0.2    -      -       -      -
    169A  LEU*     3.9    15.0    -      -       -      +
    170A  ASP*     5.4     6.9    -      -       -      +
    181A  ARG*     2.6    33.9    +      -       -      -
    234A  ALA      2.9    17.7    +      -       -      -
    235A  ALA      3.9     0.4    -      -       -      -
    236A  ALA      3.2     0.4    +      -       -      -
    237A  ASP*     1.3    76.0    -      -       -      +
    239A  GLY*     1.3    54.6    +      -       -      +
    240A  ALA      3.3     2.5    -      -       -      -
----------------------------------------------------------
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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