Contacts of the helix formed by residues 316 - 340 (chain B) in PDB entry 4O6M


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 LEU 316 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    311B  CYS*     2.8    23.8    +      -       -      +
    314B  VAL*     3.8    20.4    -      -       +      +
    315B  ASN*     1.3    80.8    -      -       -      +
    317B  PRO*     1.3    64.7    -      -       -      +
    318B  SER*     3.0    12.3    -      -       -      +
    319B  LEU*     2.9    41.5    +      -       +      +
    408B  MPG      5.6     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 317 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192B  PHE*     4.3    20.6    -      -       +      -
    200B  THR*     4.3    17.9    -      -       +      +
    250B  ILE*     3.8    24.8    -      -       +      +
    254B  LEU*     5.1    10.1    -      -       +      -
    311B  CYS*     3.8    10.0    -      -       +      +
    312B  SER*     4.3     5.2    -      -       -      +
    315B  ASN*     3.2    13.7    -      -       -      +
    316B  LEU*     1.3    89.2    -      -       -      +
    318B  SER*     1.3    62.8    +      -       -      +
    320B  ALA*     3.1    20.6    +      -       +      +
    321B  LEU*     3.4    10.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 318 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254B  LEU*     3.5    32.6    -      -       -      +
    261B  TYR*     3.6    28.3    +      -       -      -
    316B  LEU*     4.2    15.6    +      -       -      +
    317B  PRO*     1.3    82.9    -      -       -      +
    319B  LEU*     1.3    64.6    +      -       -      +
    321B  LEU*     3.2     6.8    +      -       -      +
    322B  VAL*     3.2    25.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 319 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    311B  CYS*     3.8    17.7    -      -       -      -
    316B  LEU*     2.9    33.8    +      -       +      +
    318B  SER*     1.3    80.3    +      -       -      +
    320B  ALA*     1.3    59.4    +      -       -      +
    322B  VAL*     3.2     5.4    +      -       +      +
    323B  ILE*     2.9    42.8    +      -       +      +
    406B  MPG      4.1    42.4    -      -       +      -
    408B  MPG      4.0    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 320 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250B  ILE*     5.6     1.1    -      -       +      -
    307B  ILE*     4.0     9.4    -      -       +      +
    308B  ILE*     3.9    32.1    -      -       +      -
    311B  CYS*     3.6    27.1    -      -       +      -
    316B  LEU      3.7     0.4    +      -       -      -
    317B  PRO*     3.1    13.5    +      -       +      +
    319B  LEU*     1.3    79.1    -      -       -      +
    321B  LEU*     1.3    58.1    +      -       +      +
    323B  ILE*     3.4     1.2    +      -       -      +
    324B  ILE*     3.0    37.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 321 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247B  VAL*     3.9    31.6    -      -       +      -
    250B  ILE*     3.9    33.2    -      -       +      -
    251B  THR*     3.6    21.5    -      -       -      +
    254B  LEU*     3.9    15.7    -      -       +      -
    261B  TYR*     4.8     7.9    -      -       +      +
    264B  ILE*     3.9    10.9    -      -       +      +
    265B  GLY*     4.3    10.1    -      -       -      +
    268B  ALA*     3.6    12.8    -      -       +      +
    308B  ILE*     6.2     1.6    -      -       +      -
    317B  PRO      3.8     9.9    -      -       -      +
    318B  SER      3.2     7.3    +      -       -      +
    320B  ALA*     1.3    78.6    -      -       +      +
    322B  VAL*     1.3    58.0    +      -       -      +
    324B  ILE*     4.8     2.9    -      -       +      -
    325B  ALA*     2.9    33.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 322 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261B  TYR*     5.1     4.5    -      -       +      -
    264B  ILE*     4.1    28.7    -      -       +      -
    318B  SER      3.2    15.3    +      -       -      +
    319B  LEU*     3.2    11.2    +      -       -      +
    321B  LEU*     1.3    77.7    -      -       -      +
    323B  ILE*     1.3    62.1    +      -       -      +
    325B  ALA*     3.4     1.7    +      -       -      +
    326B  LEU*     3.0    45.2    +      -       +      +
    405B  MPG      4.3    17.5    -      -       +      -
    406B  MPG      3.6    35.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 323 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    307B  ILE*     3.9    28.9    -      -       +      -
    311B  CYS*     4.4     0.2    -      -       -      -
    319B  LEU*     2.9    36.9    +      -       +      +
    320B  ALA      3.9     3.6    -      -       -      +
    322B  VAL*     1.3    77.1    -      -       -      +
    324B  ILE*     1.3    58.2    +      -       -      +
    326B  LEU*     3.3     3.5    +      -       -      +
    327B  LEU*     2.8    59.2    +      -       +      +
    406B  MPG      4.1    28.9    -      -       +      -
    408B  MPG      4.1    25.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 324 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247B  VAL*     5.5     6.7    -      -       +      -
    268B  ALA*     3.7    15.7    -      -       +      +
    271B  ALA*     3.7     5.3    -      -       +      +
    272B  SER*     3.5    24.0    -      -       -      +
    299B  ILE*     4.3    19.5    -      -       +      -
    304B  ARG*     3.9    31.4    -      -       +      +
    307B  ILE*     4.7     7.0    -      -       +      -
    308B  ILE*     3.9    32.3    -      -       +      -
    320B  ALA*     3.0    22.2    +      -       +      +
    321B  LEU*     4.1     4.7    -      -       +      +
    323B  ILE*     1.3    75.9    -      -       -      +
    325B  ALA*     1.3    58.5    +      -       -      +
    328B  GLY*     2.8    28.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 325 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    264B  ILE*     4.1     7.9    -      -       +      +
    267B  LEU*     4.0     8.1    -      -       +      -
    268B  ALA*     3.8    24.0    -      -       -      +
    321B  LEU      2.9    21.4    +      -       -      +
    322B  VAL      3.8     3.6    -      -       -      +
    324B  ILE*     1.3    77.8    -      -       -      +
    326B  LEU*     1.3    61.2    +      -       -      +
    329B  ASN*     2.9    34.1    +      -       -      +
    405B  MPG      3.9    20.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 326 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    322B  VAL*     3.0    40.4    +      -       +      +
    323B  ILE*     3.8     2.7    -      -       -      +
    325B  ALA*     1.3    75.8    -      -       -      +
    327B  LEU*     1.3    69.2    +      -       +      +
    329B  ASN*     4.3     0.5    -      -       -      +
    330B  PHE*     3.1    25.0    +      -       -      +
    405B  MPG      3.6    37.0    -      -       +      -
    406B  MPG      4.2    22.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 327 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    297B  ILE*     3.9    30.4    -      -       +      +
    298B  PRO*     4.6     8.7    -      -       +      +
    299B  ILE*     3.9    21.8    -      -       +      +
    307B  ILE*     5.0     2.9    -      -       +      -
    323B  ILE*     2.8    40.3    +      -       +      +
    326B  LEU*     1.3    76.4    -      -       +      +
    328B  GLY*     1.3    56.6    +      -       -      +
    330B  PHE*     3.5     4.4    +      -       +      +
    331B  GLU*     3.0    30.5    +      -       -      +
    406B  MPG      5.5     9.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 328 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    271B  ALA*     3.7    14.7    -      -       -      +
    275B  ILE*     3.5    13.5    -      -       -      +
    299B  ILE*     3.8    19.6    -      -       -      +
    304B  ARG*     6.3     0.2    -      -       -      -
    324B  ILE*     2.8    23.9    +      -       -      -
    327B  LEU*     1.3    74.9    -      -       -      +
    329B  ASN*     1.3    56.3    +      -       -      +
    331B  GLU      3.4     0.2    +      -       -      -
    332B  ALA*     3.0    26.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 329 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    241A  TYR*     4.6     5.0    +      -       -      -
    267B  LEU*     3.2    42.1    +      -       -      +
    270B  PHE*     3.4    28.2    -      -       -      -
    271B  ALA*     3.6     6.5    -      -       -      +
    325B  ALA      2.9    28.6    +      -       -      +
    326B  LEU      4.3     1.1    -      -       -      +
    328B  GLY*     1.3    73.5    -      -       -      +
    330B  PHE*     1.3    64.9    +      -       -      +
    332B  ALA*     3.5     5.5    +      -       -      +
    333B  LEU*     3.2    33.2    +      -       +      +
    405B  MPG      4.7     9.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 330 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295B  PHE*     5.3     5.2    -      +       -      -
    297B  ILE*     3.1    26.9    -      -       +      -
    326B  LEU      3.1    18.4    +      -       -      +
    327B  LEU*     3.9     4.7    -      -       +      +
    329B  ASN*     1.3    75.9    -      -       -      +
    331B  GLU*     1.3    57.6    +      -       -      +
    333B  LEU*     3.3    10.3    +      -       +      +
    334B  ARG*     2.9    46.0    +      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 331 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    275B  ILE*     3.5    19.7    -      -       +      -
    292B  PRO*     5.9     0.2    -      -       -      +
    296B  ALA*     4.0     4.7    -      -       -      +
    297B  ILE*     3.0    31.4    +      -       +      +
    299B  ILE*     3.7    18.6    -      -       +      -
    327B  LEU      3.0    18.3    +      -       -      +
    330B  PHE*     1.3    75.5    -      -       -      +
    332B  ALA*     1.3    62.4    +      -       -      +
    334B  ARG*     2.8    46.2    +      -       -      +
    335B  ARG*     2.9    47.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 332 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    241A  TYR*     3.3    20.9    -      -       -      +
    271B  ALA*     5.7     0.9    -      -       -      +
    274B  MET*     4.5    20.0    -      -       +      -
    275B  ILE*     4.0     8.5    -      -       +      +
    278B  THR*     4.9     9.4    -      -       +      +
    328B  GLY      3.0    16.7    +      -       -      +
    329B  ASN*     3.9     6.3    -      -       -      +
    330B  PHE      3.3     0.2    -      -       -      -
    331B  GLU*     1.3    77.2    -      -       -      +
    333B  LEU*     1.3    62.0    +      -       -      +
    335B  ARG*     3.2    19.3    +      -       -      +
    336B  ILE*     3.2    16.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 333 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    241A  TYR*     3.6    29.8    -      -       +      +
    404A  MPG      6.4     1.8    -      -       +      -
    329B  ASN*     3.2    22.2    +      -       +      +
    330B  PHE*     3.7     8.7    -      -       +      +
    332B  ALA*     1.3    76.4    -      -       -      +
    334B  ARG*     1.3    63.1    +      -       -      +
    336B  ILE*     3.2    24.2    +      -       +      +
    337B  VAL*     3.2    18.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 334 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    290B  TYR*     4.6     5.1    +      -       -      -
    292B  PRO*     4.9     8.3    -      -       -      +
    295B  PHE*     3.4    45.8    +      -       -      -
    296B  ALA*     3.5    16.1    -      -       -      +
    297B  ILE      5.0     0.2    -      -       -      +
    330B  PHE*     2.9    33.3    +      -       +      +
    331B  GLU*     2.8    44.1    +      -       -      +
    333B  LEU*     1.3    75.1    -      -       -      +
    335B  ARG*     1.3    67.9    +      -       -      +
    337B  VAL*     3.2     9.0    +      -       +      +
    338B  ALA*     2.8    50.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 335 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233A  TRP*     4.0    14.2    -      -       +      -
    275B  ILE*     2.9    37.3    +      -       -      +
    278B  THR*     2.9    30.3    +      -       -      +
    279B  GLY*     4.0     4.2    -      -       -      +
    290B  TYR*     3.2    43.8    +      -       +      +
    292B  PRO*     5.9     1.0    -      -       -      +
    297B  ILE      5.6     1.4    +      -       -      -
    299B  ILE*     6.0     0.2    -      -       -      +
    300B  THR*     4.1    16.2    -      -       -      +
    331B  GLU*     2.9    49.4    +      -       -      +
    332B  ALA*     3.2     9.8    +      -       -      +
    334B  ARG*     1.3    80.8    -      -       -      +
    336B  ILE*     1.3    62.8    +      -       -      +
    338B  ALA*     4.1     5.1    -      -       -      +
    339B  LEU*     3.1    29.7    +      -       +      +
    419B  SO4      5.3     0.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 336 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230A  TYR*     3.0    34.0    +      -       -      +
    233A  TRP*     3.7    23.1    -      -       +      -
    234A  LEU*     4.1     9.0    -      -       +      -
    237A  VAL*     3.9    22.0    -      -       +      -
    238A  LEU*     4.3    12.6    -      -       +      -
    241A  TYR*     4.1    18.2    -      -       +      +
    404A  MPG      4.1    28.9    -      -       +      -
    278B  THR*     5.7     0.4    -      -       +      -
    332B  ALA      3.2    14.1    +      -       -      +
    333B  LEU*     3.2    20.5    +      -       +      +
    335B  ARG*     1.3    78.5    -      -       -      +
    337B  VAL*     1.3    67.2    +      -       +      +
    340B  ARG*     3.7     6.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 337 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    404A  MPG      6.5     0.9    -      -       +      -
    333B  LEU*     3.2    13.0    +      -       +      +
    334B  ARG*     3.2     9.1    +      -       +      +
    336B  ILE*     1.3    81.1    -      -       +      +
    338B  ALA*     1.3    63.9    +      -       -      +
    339B  LEU      3.3     0.7    +      -       -      -
    340B  ARG*     3.3    18.1    +      -       -      +
    341B  SER*     4.4     2.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 338 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    334B  ARG*     2.8    43.0    +      -       +      +
    335B  ARG*     4.1     4.3    -      -       -      +
    337B  VAL*     1.3    75.7    -      -       -      +
    339B  LEU*     1.3    60.1    +      -       +      +
    341B  SER*     3.1    26.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 339 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230A  TYR*     3.6    15.5    -      -       +      +
    233A  TRP*     3.5    42.2    -      -       +      -
    282B  PHE*     3.7    35.9    -      -       +      -
    286B  TYR*     3.9    19.8    +      -       -      +
    290B  TYR*     4.7    12.8    -      -       +      -
    335B  ARG*     3.1    18.3    +      -       +      +
    337B  VAL      3.3     0.2    -      -       -      -
    338B  ALA*     1.3    74.3    -      -       +      +
    340B  ARG*     1.3    65.1    +      -       -      +
    341B  SER      3.0    10.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 340 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230A  TYR*     3.5    38.5    -      -       +      +
    404A  MPG      5.5     5.2    -      -       +      -
    336B  ILE      3.7     0.8    +      -       -      +
    337B  VAL*     3.3    14.5    +      -       -      +
    338B  ALA      3.2     0.8    -      -       -      -
    339B  LEU*     1.3    78.6    -      -       -      +
    341B  SER*     1.3    59.6    +      -       -      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il