Contacts of the helix formed by residues 246 - 268 (chain A) in PDB entry 4JYH


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 THR 246 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    245A  LEU*     1.3    77.0    -      -       -      +
    247A  ILE*     1.3    55.4    +      -       -      +
    248A  ALA      4.3     0.2    -      -       -      -
    249A  ASP*     3.1    24.2    +      -       -      +
    250A  GLN*     2.7    35.7    +      -       -      +
    336A  GLU*     2.7    30.6    +      -       +      +
    337A  GLU*     2.8    33.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 247 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    245A  LEU      5.1     0.7    -      -       -      +
    246A  THR*     1.3    73.4    -      -       -      +
    248A  ALA*     1.3    65.7    +      -       -      +
    250A  GLN*     4.1    16.2    -      -       -      +
    251A  ILE*     2.9    31.5    +      -       -      +
    634G  HIS*     4.1    26.0    -      -       +      +
    637G  LEU*     4.3    12.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 248 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    246A  THR*     4.3     0.4    -      -       -      -
    247A  ILE*     1.3    78.6    -      -       -      +
    249A  ASP*     1.3    51.3    +      -       -      +
    251A  ILE*     3.6     4.9    -      -       -      +
    252A  THR*     2.7    43.0    +      -       -      +
    334A  ASP      5.9     1.3    -      -       -      +
    336A  GLU*     3.4    31.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 249 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    245A  LEU*     4.3    10.8    -      -       +      +
    246A  THR*     3.1    27.9    +      -       -      +
    248A  ALA*     1.3    76.6    -      -       -      +
    250A  GLN*     1.3    59.6    +      -       -      +
    252A  THR*     3.6     4.6    -      -       -      -
    253A  LEU*     2.8    38.6    +      -       -      +
    334A  ASP      4.2     2.1    -      -       -      +
    335A  LEU*     3.5    16.6    -      -       +      +
    336A  GLU*     2.6    30.4    +      -       -      +
    337A  GLU*     2.8    36.6    +      -       -      +
    341A  VAL*     4.5     3.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 250 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242A  PHE*     3.3    56.6    -      -       +      +
    243A  THR*     3.5    26.7    +      -       -      +
    245A  LEU*     3.1    25.2    +      -       +      +
    246A  THR      2.7    28.5    +      -       -      +
    247A  ILE*     4.0    16.9    -      -       -      +
    249A  ASP*     1.3    72.3    -      -       -      +
    251A  ILE*     1.3    64.2    +      -       -      +
    253A  LEU*     3.8     1.2    -      -       -      +
    254A  LEU*     3.1    30.5    +      -       -      +
    637G  LEU*     4.0    18.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 251 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247A  ILE      2.9    25.9    +      -       -      +
    248A  ALA*     3.6     6.1    -      -       -      +
    250A  GLN*     1.3    75.0    -      -       -      +
    252A  THR*     1.3    65.6    +      -       -      +
    254A  LEU*     3.3     6.6    +      -       +      +
    255A  LYS*     3.0    50.8    +      -       +      +
    405A  GLU*     5.5     0.7    -      -       -      +
    633G  LEU*     3.6    26.9    -      -       +      +
    634G  HIS*     3.4    36.8    -      -       +      +
    637G  LEU*     3.4    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 252 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248A  ALA*     2.7    28.1    +      -       -      +
    249A  ASP*     3.6     8.1    -      -       -      -
    251A  ILE*     1.3    75.6    -      -       -      +
    253A  LEU*     1.3    63.7    +      -       -      +
    255A  LYS*     3.4     7.4    +      -       -      +
    256A  ALA*     3.1    23.5    +      -       +      +
    332A  ARG*     5.0     5.2    -      -       +      -
    333A  GLN      3.5    24.7    -      -       -      +
    334A  ASP*     4.0    13.3    +      -       +      +
    335A  LEU*     3.7    15.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 253 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242A  PHE*     4.1    12.6    -      -       +      -
    245A  LEU*     3.5    31.9    -      -       +      -
    249A  ASP      2.8    21.6    +      -       -      +
    250A  GLN      3.8     3.4    -      -       -      +
    252A  THR*     1.3    69.3    -      -       -      +
    254A  LEU*     1.3    65.4    +      -       -      +
    256A  ALA*     3.3     3.8    +      -       -      +
    257A  ALA*     3.0    28.4    +      -       -      +
    327A  LEU*     3.3    28.0    -      -       +      +
    328A  ILE*     4.5     3.8    -      -       +      -
    329A  CYS      3.5    25.6    -      -       -      +
    332A  ARG*     4.1    13.2    +      -       +      +
    335A  LEU*     4.0    15.7    -      -       +      -
    341A  VAL*     4.1    14.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 254 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232A  ILE*     4.6     9.9    -      -       +      +
    233A  VAL*     4.2    23.1    -      -       +      -
    236A  ALA*     3.9    24.0    -      -       +      -
    242A  PHE*     4.1    13.2    -      -       +      -
    250A  GLN      3.1    21.7    +      -       -      +
    251A  ILE*     3.6     9.4    -      -       -      +
    253A  LEU*     1.3    75.9    -      -       -      +
    255A  LYS*     1.3    58.1    +      -       -      +
    258A  CYS*     2.8    36.1    +      -       -      +
    327A  LEU*     4.1    13.2    -      -       +      +
    406A  MET*     3.3    13.4    -      -       +      +
    633G  LEU*     4.2    20.6    -      -       +      -
    637G  LEU*     4.3    19.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 255 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251A  ILE*     3.0    41.5    +      -       +      +
    252A  THR*     3.8     7.0    -      -       -      +
    253A  LEU      3.3     0.2    -      -       -      -
    254A  LEU*     1.3    77.4    -      -       -      +
    256A  ALA*     1.3    59.3    +      -       -      +
    257A  ALA      3.8     0.2    +      -       -      -
    258A  CYS*     4.2     5.5    +      -       -      +
    259A  LEU*     5.1     1.9    +      -       -      +
    405A  GLU*     3.5    44.7    +      -       -      +
    406A  MET*     3.3    36.9    -      -       -      +
    407A  MET*     6.0     0.2    -      -       -      +
    408A  GLU*     4.0    25.3    +      -       +      +
    633G  LEU*     4.2     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 256 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    252A  THR*     3.1    18.5    +      -       +      +
    253A  LEU      4.0     0.7    -      -       -      +
    254A  LEU      3.2     0.2    -      -       -      -
    255A  LYS*     1.3    77.6    -      -       -      +
    257A  ALA*     1.3    60.0    +      -       -      +
    259A  LEU*     5.2     2.2    +      -       -      +
    260A  ASP*     3.5    14.7    +      -       -      +
    332A  ARG*     3.4    41.3    +      -       +      +
    381A  SER*     5.1     2.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 257 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253A  LEU      3.0    16.4    +      -       -      +
    254A  LEU      3.8     0.2    -      -       -      -
    256A  ALA*     1.3    77.0    -      -       -      +
    258A  CYS*     1.3    66.5    +      -       -      +
    259A  LEU      3.2     2.9    -      -       -      -
    260A  ASP*     3.2    10.7    +      -       -      +
    261A  ILE*     3.0    27.2    +      -       +      +
    326A  CYS*     3.5    31.0    -      -       +      +
    327A  LEU*     3.6    18.8    -      -       +      +
    332A  ARG*     3.8     2.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 258 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229A  ILE*     3.7    35.7    -      -       -      -
    232A  ILE*     4.0    16.9    -      -       +      +
    254A  LEU      2.8    19.2    +      -       -      +
    255A  LYS      4.3     4.3    -      -       -      +
    256A  ALA      3.6     1.2    -      -       -      -
    257A  ALA*     1.3    78.9    -      -       -      +
    259A  LEU*     1.3    58.1    +      -       -      +
    261A  ILE*     3.5     1.5    +      -       -      -
    262A  LEU*     2.9    39.5    +      -       -      +
    406A  MET*     3.4    34.3    -      -       +      -
    407A  MET*     4.5     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 259 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    255A  LYS      5.1     2.5    +      -       -      +
    256A  ALA      5.2     1.5    +      -       -      +
    257A  ALA      3.2     0.8    -      -       -      -
    258A  CYS*     1.3    77.5    -      -       -      +
    260A  ASP*     1.3    67.3    +      -       -      +
    262A  LEU*     4.0    10.1    -      -       +      -
    263A  ILE*     3.0    36.1    +      -       +      +
    381A  SER*     3.6    20.2    -      -       -      +
    384A  GLY*     3.8     8.1    -      -       -      +
    385A  ALA*     3.5    34.8    -      -       +      +
    388A  VAL*     4.8     1.1    -      -       +      -
    407A  MET*     4.4    19.7    -      -       +      -
    501A  JYH      3.8    47.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 260 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256A  ALA      3.5    11.1    -      -       -      +
    257A  ALA*     3.4     8.8    -      -       -      +
    259A  LEU*     1.3    77.4    -      -       -      +
    261A  ILE*     1.3    58.0    +      -       -      +
    263A  ILE*     3.4     3.0    +      -       -      +
    264A  LEU*     3.0    22.8    +      -       -      +
    326A  CYS*     4.2    21.4    -      -       +      +
    332A  ARG*     3.0    29.3    +      -       -      -
    377A  LEU*     3.4    24.3    -      -       +      +
    378A  ARG*     3.9    14.9    -      -       -      -
    381A  SER*     2.7    38.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 261 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232A  ILE*     3.8    33.7    -      -       +      -
    235A  PHE*     4.9     5.2    -      -       +      -
    257A  ALA*     3.0    17.4    +      -       +      +
    260A  ASP*     1.3    74.8    -      -       -      +
    262A  LEU*     1.3    56.5    +      -       -      +
    264A  LEU*     4.2     5.8    -      -       +      -
    265A  ARG*     2.7    58.2    +      -       +      +
    323A  SER*     3.6    45.8    -      -       -      +
    326A  CYS*     4.5     9.4    -      -       +      -
    327A  LEU*     4.4    20.9    -      -       +      -
    377A  LEU*     5.8     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 262 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225A  ALA*     4.2     3.6    -      -       +      +
    228A  CYS*     3.9    24.5    -      -       +      -
    229A  ILE*     4.1    18.8    -      -       +      -
    232A  ILE*     3.9    10.0    -      -       +      +
    258A  CYS*     2.9    41.0    +      -       -      +
    259A  LEU*     3.4    22.0    +      -       +      +
    261A  ILE*     1.3    75.2    -      -       -      +
    263A  ILE*     1.3    63.6    +      -       -      +
    265A  ARG*     4.7     0.7    -      -       -      -
    266A  ILE*     3.1    19.2    +      -       -      +
    407A  MET*     4.4     5.6    -      -       +      -
    501A  JYH      3.3    61.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 263 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259A  LEU*     3.0    21.4    +      -       +      +
    260A  ASP*     3.4     7.0    -      -       -      +
    262A  LEU*     1.3    75.7    -      -       -      +
    264A  LEU*     1.3    63.8    +      -       -      +
    266A  ILE*     3.0     5.5    -      -       -      +
    267A  CYS*     3.0    27.7    +      -       -      +
    302A  VAL*     4.9     5.4    -      -       +      -
    305A  PHE*     4.1    17.5    -      -       +      -
    377A  LEU*     3.9    16.4    -      -       +      +
    380A  ILE*     3.6    24.7    -      -       +      +
    381A  SER*     3.5    37.7    -      -       -      +
    501A  JYH      3.7    29.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 264 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260A  ASP      3.0    14.2    +      -       -      +
    261A  ILE*     3.7     7.2    -      -       +      +
    263A  ILE*     1.3    79.3    -      -       -      +
    265A  ARG*     1.3    64.2    +      -       +      +
    267A  CYS*     3.3    12.2    +      -       -      -
    268A  THR*     3.3    26.1    +      -       +      +
    305A  PHE*     4.7     6.7    -      -       +      -
    309A  LEU*     4.3    21.8    -      -       +      -
    314A  MET*     5.5     2.0    -      -       +      -
    319A  THR*     4.0    21.5    -      -       +      +
    322A  LEU*     4.4    21.1    -      -       +      -
    323A  SER*     3.2    36.1    -      -       -      +
    373A  LYS*     6.5     0.2    -      -       +      -
    377A  LEU*     3.8    25.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 265 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188A  HIS*     4.5    15.3    +      -       -      +
    191A  THR*     2.9    48.7    +      -       -      -
    192A  PHE*     3.2    54.2    -      -       +      +
    228A  CYS*     3.7    19.5    -      -       -      -
    231A  LYS*     3.7    16.8    +      -       -      +
    232A  ILE*     4.1     9.9    -      -       -      +
    235A  PHE*     4.2    18.6    -      -       -      +
    261A  ILE*     2.7    41.1    +      -       +      +
    262A  LEU      3.9     2.9    -      -       -      +
    264A  LEU*     1.3    75.2    -      -       +      +
    266A  ILE*     1.3    60.0    +      -       -      +
    268A  THR*     2.7    22.6    +      -       -      -
    269A  ARG*     3.5     3.1    -      -       -      +
    319A  THR*     5.9     2.0    -      -       +      -
    323A  SER*     5.5     2.0    +      -       -      +
    501A  JYH      4.3     6.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 266 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221A  PHE*     6.4     0.2    -      -       +      -
    262A  LEU      3.1    10.5    +      -       -      +
    263A  ILE*     3.0    20.0    -      -       -      +
    265A  ARG*     1.3    78.9    -      -       -      +
    267A  CYS*     1.3    65.0    +      -       -      +
    268A  THR      3.1     0.4    -      -       -      -
    269A  ARG*     3.0    26.6    +      -       +      +
    270A  TYR      3.8     0.3    +      -       -      -
    277A  MET*     3.8    36.5    -      -       +      +
    278A  THR      4.3    16.2    -      -       -      +
    279A  PHE*     4.2    19.5    -      -       +      -
    290A  MET*     4.4     9.0    -      -       +      -
    295A  PHE*     4.9     0.7    -      -       +      -
    302A  VAL*     4.7     3.8    -      -       +      -
    501A  JYH      3.5    49.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 267 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    263A  ILE*     3.0    19.6    +      -       -      +
    264A  LEU      3.8     4.3    -      -       -      +
    265A  ARG      3.2     0.4    -      -       -      -
    266A  ILE*     1.3    77.9    -      -       -      +
    268A  THR*     1.3    57.5    +      -       -      +
    269A  ARG      3.2     1.3    -      -       -      -
    270A  TYR*     3.7    15.0    -      -       -      +
    277A  MET*     4.5     3.1    -      -       -      -
    302A  VAL*     3.4    41.1    -      -       -      -
    305A  PHE*     3.4    31.9    -      -       +      -
    306A  ALA*     3.9    23.5    -      -       +      +
    309A  LEU*     4.0    11.5    -      -       +      +
    310A  LEU*     5.1     3.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 268 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192A  PHE*     3.7    15.6    -      -       -      -
    195A  LEU*     4.1    14.7    +      -       -      +
    264A  LEU*     3.3    18.8    -      -       +      +
    265A  ARG*     2.7    21.5    +      -       -      -
    267A  CYS*     1.3    76.0    -      -       -      +
    269A  ARG*     1.3    58.4    +      -       -      +
    270A  TYR      3.3     5.0    +      -       -      +
    309A  LEU*     3.9    19.3    -      -       +      -
    310A  LEU*     6.2     2.5    -      -       -      -
    314A  MET*     6.0     2.2    -      -       +      -
    319A  THR*     4.2    24.3    -      -       +      +
----------------------------------------------------------
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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