Contacts of the helix formed by residues 893 - 914 (chain A) in PDB entry 3W5D


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 ALA 893 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    855A  TRP*     3.7    21.1    -      -       +      -
    889A  GLU      4.1     1.4    +      -       -      -
    890A  ILE*     3.1    25.7    +      -       +      +
    891A  PHE      3.5     0.8    -      -       -      -
    892A  GLU*     1.3    78.7    -      -       -      +
    894A  PRO*     1.3    67.2    -      -       +      +
    895A  GLU*     3.2    15.5    -      -       -      +
    896A  PRO*     2.9    26.2    -      -       +      +
    897A  MET*     4.4     6.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 894 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    892A  GLU      3.4     4.4    -      -       -      +
    893A  ALA*     1.3    83.0    -      -       +      +
    895A  GLU*     1.3    71.8    +      -       -      +
    896A  PRO      3.5     0.2    -      -       -      -
    897A  MET*     3.7     8.5    +      -       +      +
    898A  THR*     2.6    33.6    +      -       -      -
    958A  LYS*     3.7    22.7    -      -       +      +
    959A  LEU      4.0    13.2    -      -       -      +
    960A  LYS*     3.7    27.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 895 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    855A  TRP*     3.3    40.1    -      -       +      +
    861A  ASP*     5.2     5.7    -      -       +      +
    893A  ALA*     3.6     9.5    -      -       -      +
    894A  PRO*     1.3    94.9    -      -       -      +
    896A  PRO*     1.4    67.4    -      -       +      +
    898A  THR*     3.2     8.2    +      -       -      -
    899A  MET*     2.9    26.2    +      -       -      +
    960A  LYS*     4.6    18.5    -      -       +      +
    961A  ALA      5.6     2.7    -      -       -      +
    962A  LEU*     4.3     3.4    -      -       +      +
    966A  GLN*     4.5    10.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 896 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    852A  ALA*     3.8    26.6    -      -       +      +
    855A  TRP*     3.6    19.7    -      -       +      -
    856A  PHE*     3.5    43.1    -      -       +      -
    891A  PHE      5.3     1.1    -      -       -      +
    893A  ALA      2.9    30.7    -      -       -      +
    895A  GLU*     1.4    85.2    -      -       +      +
    897A  MET*     1.3    63.5    +      -       +      +
    899A  MET*     2.9    17.1    +      -       +      +
    900A  ALA      2.9    11.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 897 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    785A  GLU*     3.9    16.4    -      -       +      +
    786A  ALA*     3.5    23.4    -      -       -      +
    787A  LEU*     4.5     0.2    -      -       -      +
    788A  ILE*     4.2    18.4    -      -       +      -
    791A  GLN*     3.9    26.0    -      -       -      +
    892A  GLU*     4.3    22.7    -      -       +      +
    893A  ALA      4.5     6.1    -      -       -      +
    894A  PRO*     3.8     9.9    -      -       +      +
    896A  PRO*     1.3    79.9    -      -       +      +
    898A  THR*     1.3    53.7    +      -       -      +
    900A  ALA*     3.1     3.6    +      -       -      +
    901A  LEU*     2.8    36.7    +      -       -      +
    958A  LYS*     4.2    33.9    -      -       +      +
    959A  LEU*     4.6     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 898 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    894A  PRO      2.6    22.6    +      -       -      -
    895A  GLU      3.2     6.0    +      -       -      -
    897A  MET*     1.3    77.0    -      -       -      +
    899A  MET*     1.3    59.7    +      -       -      +
    901A  LEU*     4.1     1.8    -      -       -      -
    902A  SER*     2.7    35.2    +      -       -      +
    944A  HIS*     5.9     0.7    -      -       +      -
    948A  LEU*     3.7    21.8    -      -       +      -
    959A  LEU*     3.2    15.8    -      -       +      +
    960A  LYS      3.0    39.0    +      -       -      +
    962A  LEU*     3.7    17.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 899 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    851A  ALA*     3.4    31.0    -      -       +      +
    854A  TRP*     3.7    23.1    -      -       +      -
    855A  TRP*     4.2    15.0    -      -       +      -
    895A  GLU      2.9    15.5    +      -       -      +
    896A  PRO      2.9    10.6    +      -       -      +
    898A  THR*     1.3    76.7    -      -       -      +
    900A  ALA*     1.3    60.0    +      -       -      +
    902A  SER*     3.9     1.6    -      -       -      -
    903A  VAL*     3.0    33.8    +      -       +      +
    962A  LEU*     3.9    15.0    -      -       +      -
    966A  GLN*     3.7    45.8    -      -       -      +
    969A  MET*     4.2    10.5    -      -       +      -
    970A  VAL*     3.7    13.7    -      -       +      +
    973A  ILE*     5.9     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 900 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    786A  ALA*     3.5    26.2    -      -       +      +
    787A  LEU*     3.9     7.4    -      -       +      -
    848A  THR*     3.3    37.7    -      -       -      +
    851A  ALA*     4.0     3.9    -      -       -      +
    852A  ALA*     4.5     1.8    -      -       +      -
    896A  PRO      2.9    11.2    +      -       -      +
    897A  MET      3.5     6.5    -      -       -      +
    899A  MET*     1.3    76.0    -      -       -      +
    901A  LEU*     1.3    57.9    +      -       -      +
    903A  VAL*     3.1     5.4    +      -       -      +
    904A  LEU*     2.8    25.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 901 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    787A  LEU*     3.6    16.4    -      -       +      +
    791A  GLN*     4.1    30.5    -      -       +      +
    794A  TRP*     6.2     1.1    -      -       +      -
    795A  VAL*     4.1    24.5    -      -       +      -
    897A  MET      2.8    21.5    +      -       -      +
    898A  THR*     4.4     3.4    -      -       +      +
    900A  ALA*     1.3    72.9    -      -       -      +
    902A  SER*     1.3    56.3    +      -       -      +
    904A  LEU*     3.2     8.6    +      -       +      +
    905A  VAL*     2.9    30.0    +      -       +      +
    944A  HIS*     3.7    18.8    -      -       +      -
    947A  ILE*     4.1     8.5    -      -       +      -
    957A  PHE*     6.0     0.4    -      -       +      -
    959A  LEU*     3.7    36.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 902 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    898A  THR*     2.7    29.3    +      -       -      +
    899A  MET      3.9     2.7    -      -       -      -
    901A  LEU*     1.3    73.4    -      -       -      +
    903A  VAL*     1.3    59.1    +      -       -      +
    905A  VAL*     3.9     1.7    -      -       -      +
    906A  THR*     2.6    36.9    +      -       -      -
    944A  HIS*     2.9    27.8    +      -       -      -
    948A  LEU*     4.7     0.7    -      -       -      +
    962A  LEU*     3.8     9.2    -      -       -      +
    967A  TRP*     3.9    16.9    -      -       -      -
    970A  VAL*     3.7    15.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 903 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    847A  ALA*     3.8    32.8    -      -       +      +
    848A  THR*     3.9     7.9    -      -       +      -
    851A  ALA*     3.4    20.4    -      -       +      -
    899A  MET      3.0    19.1    +      -       -      +
    900A  ALA      3.3     7.6    -      -       -      +
    902A  SER*     1.3    72.8    -      -       -      +
    904A  LEU*     1.3    57.7    +      -       -      +
    906A  THR      3.2     0.3    +      -       -      -
    907A  ILE*     2.7    40.4    +      -       +      +
    970A  VAL*     4.1    14.1    -      -       +      -
    973A  ILE*     3.4    23.8    -      -       +      -
    974A  SER*     3.3    11.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 904 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    767A  SER*     4.9     2.2    -      -       -      +
    770A  GLY      5.6     0.4    -      -       -      -
    771A  GLU*     4.3    26.2    -      -       +      +
    787A  LEU*     4.3    18.6    -      -       +      -
    792A  LEU*     4.9     3.1    -      -       +      -
    795A  VAL*     3.8    38.1    -      -       +      -
    844A  VAL*     4.1    23.6    -      -       +      -
    848A  THR*     3.7    13.2    -      -       +      +
    900A  ALA      2.8    15.3    +      -       -      +
    901A  LEU*     3.4    15.3    -      -       +      +
    903A  VAL*     1.3    75.0    -      -       -      +
    905A  VAL*     1.3    64.0    +      -       -      +
    907A  ILE*     3.0     3.8    +      -       -      +
    908A  GLU*     2.8    40.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 905 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    794A  TRP*     6.2     0.7    -      -       +      -
    795A  VAL*     3.9    17.9    -      -       +      -
    799A  THR*     3.8    31.9    -      -       +      +
    800A  ASP*     5.7     0.2    -      -       -      -
    901A  LEU*     2.9    24.7    +      -       +      +
    902A  SER*     3.9     3.8    -      -       -      +
    904A  LEU*     1.3    73.7    -      -       -      +
    906A  THR*     1.3    63.2    +      -       -      +
    908A  GLU*     3.4     2.6    +      -       -      -
    909A  MET*     3.1    27.4    +      -       +      +
    940A  SER      5.1     0.9    -      -       -      +
    941A  MET*     3.7    26.2    -      -       +      -
    944A  HIS*     3.7    35.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 906 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    902A  SER      2.6    23.4    +      -       -      -
    905A  VAL*     1.3    73.0    -      -       -      +
    907A  ILE*     1.3    67.2    +      -       -      +
    909A  MET*     3.3     9.7    +      -       +      +
    910A  CYS*     3.1    26.9    +      -       -      -
    941A  MET*     4.4    10.2    -      -       +      +
    967A  TRP*     3.8    12.8    -      -       -      -
    970A  VAL*     3.5    11.1    -      -       +      +
    971A  LEU*     4.1    22.9    -      -       +      -
    974A  SER*     3.3    24.7    -      -       -      +
    975A  LEU*     5.1     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 907 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    843A  TYR*     3.8    19.7    -      -       +      -
    844A  VAL*     3.5    36.6    -      -       +      -
    847A  ALA*     3.8    29.6    -      -       +      -
    903A  VAL*     2.7    23.3    +      -       +      +
    904A  LEU*     3.6     4.9    -      -       -      +
    906A  THR*     1.3    72.9    -      -       -      +
    908A  GLU*     1.3    56.4    +      -       -      +
    910A  CYS*     2.8    10.4    +      -       -      +
    911A  ASN*     2.6    33.4    +      -       +      -
    973A  ILE      4.1     1.1    -      -       -      +
    974A  SER*     3.4    28.5    -      -       -      +
    977A  VAL*     4.1    13.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 908 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    763A  TYR*     2.9    36.9    +      -       -      +
    766A  SER*     5.0     0.9    +      -       -      +
    767A  SER*     3.3    41.1    +      -       -      +
    795A  VAL*     5.3     0.2    -      -       +      -
    800A  ASP*     3.4    23.1    -      -       -      +
    844A  VAL*     4.0    26.3    -      -       -      +
    904A  LEU*     2.8    33.8    +      -       +      +
    905A  VAL*     3.9     4.3    -      -       -      +
    907A  ILE*     1.3    69.4    -      -       -      +
    909A  MET*     1.3    61.7    +      -       +      +
    911A  ASN*     3.8    12.8    +      -       -      +
    912A  ALA*     2.8    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 909 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    763A  TYR*     4.2     0.2    -      -       -      +
    799A  THR*     3.4    42.6    -      -       +      +
    800A  ASP*     4.0     7.2    -      -       -      +
    803A  PRO*     4.0    10.5    -      -       +      -
    905A  VAL      3.1    19.8    +      -       -      +
    906A  THR*     3.6     8.3    -      -       +      +
    908A  GLU*     1.3    78.6    -      -       -      +
    910A  CYS*     1.3    61.7    -      -       -      +
    912A  ALA*     3.4    16.2    +      -       -      +
    913A  LEU*     3.5     7.2    +      -       -      +
    937A  ILE*     3.6    49.3    -      -       +      +
    940A  SER*     3.9    18.8    -      -       -      -
    941A  MET*     3.9    18.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 910 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    906A  THR*     3.1    21.6    +      -       -      -
    907A  ILE      2.8    11.1    +      -       -      +
    909A  MET*     1.3    76.4    -      -       -      +
    911A  ASN*     1.3    57.3    +      -       -      +
    913A  LEU*     3.0    25.9    +      -       -      +
    914A  ASN*     3.2    15.7    +      -       -      -
    974A  SER*     4.3    16.2    -      -       -      -
    975A  LEU*     4.4    18.4    -      -       -      -
    977A  VAL*     3.5    15.9    -      -       +      -
    978A  ILE*     3.8    26.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 911 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    763A  TYR*     3.8    14.5    -      -       +      +
    766A  SER*     4.1    19.8    +      -       -      -
    837A  TYR*     5.2     7.1    -      -       -      -
    840A  ILE*     3.9    24.9    -      -       -      +
    844A  VAL*     6.0     0.2    -      -       -      -
    907A  ILE*     2.6    22.1    +      -       +      +
    908A  GLU*     3.8    21.7    +      -       -      +
    910A  CYS*     1.3    70.9    -      -       -      +
    912A  ALA*     1.3    56.2    +      -       -      +
    913A  LEU      3.2     0.2    -      -       -      -
    914A  ASN*     3.3    23.8    +      -       -      +
    915A  SER*     2.8    35.5    +      -       -      -
    977A  VAL*     3.9     7.6    -      -       +      +
    981A  ASP*     4.7     1.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 912 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    763A  TYR*     3.5    20.8    -      -       +      +
    803A  PRO*     3.9    19.7    -      -       +      -
    807A  LEU*     3.7     4.3    -      -       +      +
    908A  GLU      2.8    13.6    +      -       -      +
    909A  MET*     3.4    14.1    -      -       -      +
    910A  CYS      3.2     0.2    -      -       -      -
    911A  ASN*     1.3    76.2    -      -       -      +
    913A  LEU*     1.3    61.0    +      -       -      +
    915A  SER*     3.3    15.7    +      -       -      -
    916A  LEU      3.7     1.6    +      -       -      -
    933A  LEU*     3.5    26.2    -      -       +      +
    937A  ILE*     4.5     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 913 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    909A  MET      3.5    13.7    +      -       -      +
    910A  CYS*     3.0    11.7    +      -       -      +
    912A  ALA*     1.3    74.8    -      -       -      +
    914A  ASN*     1.3    56.2    +      -       -      +
    915A  SER      2.9     9.3    +      -       -      -
    916A  LEU*     3.3    14.0    +      -       +      +
    922A  LEU*     3.5    31.5    -      -       +      +
    927A  PRO*     3.9    36.1    -      -       +      -
    933A  LEU*     4.0    19.5    -      -       +      -
    934A  LEU*     4.3     9.4    -      -       +      -
    937A  ILE*     4.1    14.4    -      -       +      -
    978A  ILE*     4.7    14.8    -      -       +      -
    985A  LYS*     4.9     1.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 914 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    759A  GLN*     5.0     0.2    +      -       -      -
    836A  ARG*     4.6     2.6    +      -       -      -
    910A  CYS      3.2    16.9    +      -       -      -
    911A  ASN*     3.3    30.4    +      -       -      +
    913A  LEU*     1.3    74.1    -      -       -      +
    915A  SER*     1.3    57.7    +      -       -      +
    916A  LEU      3.5     0.4    -      -       -      -
    917A  SER      3.4     6.2    -      -       -      +
    922A  LEU*     4.2     5.7    -      -       -      +
    977A  VAL*     3.7    19.8    +      -       -      +
    978A  ILE*     3.8    27.5    -      -       -      +
    981A  ASP*     3.2    28.7    -      -       -      +
    982A  GLU*     4.1     8.0    -      -       -      +
    985A  LYS*     3.3    28.5    +      -       -      +
----------------------------------------------------------
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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