Contacts of the helix formed by residues 176 - 199 (chain H) in PDB entry 2ONK


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 VAL 176 (chain H).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82F  PHE*     4.0    18.2    -      -       +      -
     84F  HIS*     4.2     3.4    -      -       +      -
     93F  TYR*     3.9    11.7    -      -       +      +
    154H  VAL*     4.7     1.1    -      -       +      -
    158H  LEU*     3.9    28.7    -      -       +      +
    159H  GLU*     4.2     6.7    -      -       +      -
    162H  ALA*     3.5    28.0    -      -       +      -
    172H  VAL*     2.6    22.3    +      -       +      +
    175H  THR*     1.3    78.9    -      -       -      +
    177H  SER*     1.3    70.6    +      -       -      +
    178H  LEU      3.6     0.2    -      -       -      -
    179H  PRO*     3.3     1.5    -      -       -      +
    180H  LEU*     3.1    42.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 177 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74H  TYR*     3.7    15.0    +      -       -      -
    151H  PHE*     4.3     6.1    -      -       -      -
    154H  VAL*     4.0     7.9    -      -       -      +
    159H  GLU*     3.0    34.8    +      -       -      +
    172H  VAL*     3.2     2.8    +      -       -      +
    173H  PHE*     3.3    29.8    -      -       -      -
    176H  VAL*     1.3    82.7    -      -       -      +
    178H  LEU*     1.3    68.9    +      -       -      +
    180H  LEU*     3.1     7.4    +      -       -      +
    181H  SER*     3.0    16.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 178 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70H  THR*     4.4     3.6    -      -       +      -
    151H  PHE*     3.5    20.0    -      -       +      -
    173H  PHE*     2.7    57.5    +      -       +      +
    174H  PHE*     3.9    28.5    -      -       +      +
    177H  SER*     1.3    72.2    -      -       -      +
    179H  PRO*     1.3    73.2    -      -       +      +
    181H  SER*     2.8    18.8    +      -       -      -
    182H  VAL*     3.0    16.3    +      -       +      +
    185H  ILE*     4.3    14.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 179 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84F  HIS*     3.9    21.0    -      -       +      +
    174H  PHE      3.1    26.0    -      -       -      +
    175H  THR*     3.0    29.6    -      -       -      +
    176H  VAL      3.3     8.7    -      -       -      +
    178H  LEU*     1.3    89.1    -      -       +      +
    180H  LEU*     1.3    59.0    +      -       -      +
    182H  VAL*     3.5    23.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 180 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83F  PRO*     3.5    22.2    -      -       +      -
     84F  HIS*     3.4    37.5    -      -       +      +
    153H  SER*     4.9     3.6    +      -       -      -
    154H  VAL*     3.4    38.9    -      -       +      +
    158H  LEU*     3.9    15.0    -      -       +      -
    176H  VAL*     3.1    35.8    +      -       +      +
    177H  SER      3.1     0.6    +      -       -      -
    178H  LEU      2.8     4.8    +      -       -      -
    179H  PRO*     1.3    78.1    -      -       -      +
    181H  SER*     1.3    56.5    +      -       -      +
    182H  VAL      3.3     1.3    +      -       -      -
    183H  ARG*     4.9     3.2    +      -       -      +
    184H  HIS*     5.0     2.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 181 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147H  ALA      5.2     0.2    -      -       -      -
    150H  GLY*     3.4    35.2    -      -       -      -
    151H  PHE*     3.5    25.2    -      -       -      -
    154H  VAL*     4.5     1.6    -      -       -      -
    177H  SER      3.0    16.1    +      -       -      -
    178H  LEU*     2.8     8.1    +      -       -      -
    180H  LEU*     1.3    71.0    -      -       -      +
    182H  VAL*     1.3    66.4    +      -       -      +
    183H  ARG      3.3     2.5    -      -       -      -
    184H  HIS*     2.7    22.4    +      -       -      +
    185H  ILE*     3.0    16.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 182 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178H  LEU*     3.0    20.7    +      -       +      +
    179H  PRO*     3.5    22.9    -      -       +      +
    180H  LEU      3.3     2.0    -      -       -      -
    181H  SER*     1.3    77.8    -      -       -      +
    183H  ARG*     1.3    56.0    +      -       -      +
    184H  HIS      2.7    12.0    +      -       -      -
    185H  ILE*     2.9    12.9    +      -       +      +
    186H  VAL*     2.8    38.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 183 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    180H  LEU      4.9     2.3    +      -       -      +
    181H  SER      3.3     1.4    -      -       -      -
    182H  VAL*     1.3    78.7    -      -       -      +
    184H  HIS*     1.3    63.7    +      -       +      +
    186H  VAL*     4.5     5.8    -      -       +      +
    187H  ALA*     3.6    19.7    +      -       -      +
    251H  VAL*     4.3    32.3    +      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 184 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146H  GLN*     3.7    31.3    +      -       -      +
    147H  ALA*     5.0     1.1    -      -       -      -
    149H  GLU*     4.3    13.3    -      -       +      +
    150H  GLY*     3.2    36.6    +      -       -      -
    153H  SER*     3.7    22.2    +      -       -      -
    180H  LEU      5.0     2.2    -      -       -      -
    181H  SER*     2.7    18.7    +      -       -      +
    182H  VAL      2.7     1.4    +      -       -      -
    183H  ARG*     1.3    79.3    +      -       +      +
    185H  ILE*     1.3    60.4    +      -       +      +
    186H  VAL      3.2     1.1    -      -       -      -
    187H  ALA*     3.7     0.7    -      -       -      -
    188H  GLY*     2.7    32.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 185 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66H  VAL*     4.6    12.8    -      -       +      -
     70H  THR*     4.5     5.8    -      -       +      +
    143H  TYR*     3.0    33.0    -      -       +      +
    147H  ALA*     4.9    11.9    -      -       +      +
    151H  PHE*     4.4    10.5    -      -       +      -
    178H  LEU*     4.3    30.5    -      -       +      +
    181H  SER*     3.0    22.4    +      -       -      +
    182H  VAL*     2.9    13.4    +      -       +      +
    184H  HIS*     1.3    77.9    -      -       +      +
    186H  VAL*     1.3    60.3    +      -       +      +
    189H  ALA*     2.8    29.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 186 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182H  VAL*     2.8    31.9    +      -       +      +
    183H  ARG*     4.5     6.1    -      -       +      +
    185H  ILE*     1.3    79.9    -      -       +      +
    187H  ALA*     1.3    65.8    +      -       -      +
    189H  ALA*     3.1     6.8    +      -       -      +
    190H  ILE*     2.9    33.5    +      -       +      +
    251H  VAL*     4.2    31.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 187 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146H  GLN*     4.1    12.3    -      -       -      +
    183H  ARG      3.6    18.4    +      -       -      +
    184H  HIS      3.3     4.9    +      -       -      +
    186H  VAL*     1.3    80.5    -      -       -      +
    188H  GLY*     1.3    64.6    +      -       -      +
    190H  ILE*     3.1     8.8    +      -       -      +
    191H  MET*     2.8    35.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 188 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143H  TYR*     3.4    17.1    -      -       -      -
    146H  GLN*     3.5    26.6    -      -       -      +
    184H  HIS      2.7    21.0    +      -       -      -
    185H  ILE      3.7     1.1    -      -       -      -
    187H  ALA*     1.3    73.5    -      -       -      +
    189H  ALA*     1.3    61.1    +      -       -      +
    191H  MET*     3.3     4.8    +      -       -      +
    192H  SER*     3.0    24.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 189 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62H  THR*     3.8    23.1    +      -       +      -
     66H  VAL*     4.2    12.1    -      -       +      -
    143H  TYR*     3.4     8.8    -      -       -      -
    185H  ILE*     2.8    21.8    +      -       +      +
    186H  VAL*     3.5     6.3    -      -       -      +
    188H  GLY*     1.3    72.1    -      -       -      +
    190H  ILE*     1.3    68.0    +      -       +      +
    192H  SER*     2.9    16.0    +      -       -      -
    193H  TRP*     2.9    13.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 190 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186H  VAL*     2.9    29.5    +      -       +      +
    187H  ALA*     3.5    11.0    -      -       -      +
    189H  ALA*     1.3    77.5    -      -       +      +
    191H  MET*     1.3    66.8    +      -       +      +
    193H  TRP*     3.2     8.9    +      -       -      +
    194H  ALA*     3.0    20.8    +      -       +      +
    244H  PHE*     4.0    24.1    -      -       +      -
    247H  LEU*     3.7    48.0    -      -       +      +
    248H  ARG*     6.0     0.9    -      -       +      -
    251H  VAL*     4.9     5.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 191 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142H  ILE*     3.9    18.6    -      -       +      +
    146H  GLN*     3.4    37.2    -      -       +      +
    187H  ALA*     2.8    25.0    +      -       +      +
    188H  GLY      3.6     4.0    -      -       -      +
    190H  ILE*     1.3    81.6    -      -       +      +
    192H  SER*     1.3    61.0    +      -       -      +
    194H  ALA*     3.3     9.1    +      -       -      +
    195H  ARG*     3.1    20.1    +      -       -      +
     95I  VAL*     5.3    11.7    -      -       +      +
    145I  ASN*     5.6     8.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 192 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61H  SER*     4.8     1.7    +      -       -      -
     62H  THR*     2.7    31.8    +      -       -      +
     65H  ALA*     4.9     2.2    -      -       -      +
    139H  SER*     3.4    32.1    +      -       -      -
    142H  ILE*     3.9     6.2    -      -       -      +
    143H  TYR*     4.1    20.0    -      -       -      +
    188H  GLY      3.0    11.2    +      -       -      -
    189H  ALA*     2.9     8.5    +      -       -      -
    191H  MET*     1.3    74.7    -      -       -      +
    193H  TRP*     1.3    64.4    +      -       -      +
    195H  ARG*     3.3     0.7    +      -       -      -
    196H  GLY*     3.1    18.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 193 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55H  TYR*     3.3    46.8    +      +       +      -
     58H  ALA*     3.7     9.8    -      -       +      +
     59H  LEU*     3.7    39.4    -      -       +      +
     62H  THR*     3.6    10.3    -      -       +      +
    189H  ALA      2.9    11.5    +      -       -      +
    190H  ILE*     3.4    10.8    -      -       -      +
    192H  SER*     1.3    76.1    +      -       -      +
    194H  ALA*     1.3    65.3    +      -       -      +
    195H  ARG      3.1     0.2    +      -       -      -
    196H  GLY*     3.2     2.1    +      -       -      +
    197H  ILE*     3.0    50.1    +      -       +      +
    243H  VAL*     3.3    31.9    -      -       +      -
    244H  PHE*     3.1    40.8    -      +       -      -
    247H  LEU*     4.9     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 194 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190H  ILE      3.0     9.5    +      -       -      +
    191H  MET*     3.3    11.0    +      -       -      +
    193H  TRP*     1.3    78.1    -      -       -      +
    195H  ARG*     1.3    60.2    +      -       -      +
    197H  ILE*     3.7     4.6    -      -       -      +
    198H  SER*     3.0    29.5    +      -       -      -
    244H  PHE*     3.6    33.7    -      -       +      -
     95I  VAL*     3.5    29.0    -      -       +      +
     96I  VAL*     4.7     2.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 195 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99H  HIS*     3.3    22.8    -      -       -      -
    138H  VAL*     2.7    44.5    +      -       +      +
    139H  SER*     3.6    22.0    -      -       -      -
    142H  ILE*     4.0    21.8    -      -       +      +
    191H  MET      3.1    12.0    +      -       -      +
    192H  SER      3.4     8.7    -      -       -      +
    193H  TRP      3.0     0.6    -      -       -      -
    194H  ALA*     1.3    75.6    -      -       -      +
    196H  GLY*     1.3    65.7    +      -       -      +
    198H  SER*     3.1    12.6    +      -       -      -
    199H  GLU*     2.7    43.5    +      -       -      +
     95I  VAL*     5.2     3.1    -      -       +      +
     99I  HIS*     3.9    13.0    +      -       -      -
    195I  ARG*     5.0     8.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 196 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58H  ALA*     4.2     4.0    -      -       -      -
     61H  SER*     5.2     0.4    -      -       -      -
    135H  MET*     2.8    51.5    -      -       -      +
    139H  SER*     4.4     1.0    -      -       -      -
    192H  SER      3.1    11.4    +      -       -      -
    193H  TRP      3.8     1.8    -      -       -      -
    195H  ARG*     1.3    78.5    -      -       -      +
    197H  ILE*     1.3    65.3    +      -       -      +
    199H  GLU*     3.1    16.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 197 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54H  THR*     4.1    18.4    -      -       +      +
     55H  TYR*     3.2    42.8    -      -       +      +
     58H  ALA*     3.8     7.1    -      -       +      +
    135H  MET*     4.2     0.6    -      -       -      +
    193H  TRP*     3.0    56.4    +      -       +      +
    194H  ALA*     3.7     8.1    -      -       -      +
    196H  GLY*     1.3    77.5    -      -       -      +
    198H  SER*     1.3    66.9    +      -       -      +
    199H  GLU      3.5     0.5    +      -       -      +
    213H  ALA*     5.7     0.3    -      -       -      +
    214H  PRO*     3.6    18.2    -      -       -      +
    240H  SER*     4.7     3.8    -      -       -      +
    244H  PHE*     4.4     6.7    -      -       +      -
     96I  VAL      4.1    13.2    -      -       -      +
     98I  PRO*     3.8     9.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 198 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    194H  ALA      3.0    16.4    +      -       -      -
    195H  ARG*     3.1     9.6    +      -       -      -
    197H  ILE*     1.3    76.1    -      -       -      +
    199H  GLU*     1.3    60.8    +      -       -      +
    200H  PHE*     4.6     0.2    -      -       -      +
    214H  PRO*     4.6     0.5    -      -       -      +
     94I  PRO      5.5     0.9    -      -       -      -
     95I  VAL      3.6    11.5    +      -       -      -
     96I  VAL      3.6     5.5    +      -       -      -
     97I  ILE      3.5     8.0    +      -       -      -
     98I  PRO*     3.4    29.6    -      -       -      +
     99I  HIS*     2.9    43.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 199 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99H  HIS*     3.5    12.2    +      -       -      +
    135H  MET*     4.8     2.9    -      -       +      +
    138H  VAL*     4.2     9.8    -      -       +      +
    195H  ARG*     2.7    46.3    +      -       -      +
    196H  GLY*     3.1    18.4    +      -       -      +
    197H  ILE      4.1     0.9    -      -       -      +
    198H  SER*     1.3    77.3    -      -       -      +
    200H  PHE*     1.3    63.2    +      -       -      +
    201H  GLY      3.6     1.0    -      -       -      -
    202H  ALA*     2.6    40.5    +      -       +      +
    203H  VAL*     3.5    30.1    -      -       +      +
    212H  ILE*     4.9     3.3    -      -       -      +
    214H  PRO*     3.2    21.1    -      -       -      +
     99I  HIS*     3.0     9.4    +      -       -      -
----------------------------------------------------------
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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