Contacts of the helix formed by residues 1167 - 1196 (chain H) in PDB entry 5TWV


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 ALA1167 (chain H).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1163H  VAL      5.2     0.2    +      -       -      -
   1164H  PHE      4.4     7.1    +      -       -      +
   1165H  LEU*     4.8     3.6    -      -       -      +
   1166H  VAL*     1.3    79.3    -      -       -      +
   1168H  LEU*     1.3    63.0    +      -       -      +
   1169H  LEU      3.3     3.1    -      -       -      +
   1170H  PRO*     3.3    21.2    -      -       +      +
   1171H  LEU*     4.0     8.5    +      -       -      +
   1262H  ILE*     5.7     9.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU1168 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1166H  VAL*     3.3    11.8    -      -       +      +
   1167H  ALA*     1.3    74.5    -      -       -      +
   1169H  LEU*     1.3    59.4    +      -       -      +
   1170H  PRO      3.5     0.2    -      -       -      -
   1171H  LEU*     3.2     9.0    +      -       +      +
   1172H  ALA*     2.9    32.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU1169 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1167H  ALA      3.3     0.2    -      -       -      -
   1168H  LEU*     1.3    75.7    -      -       -      +
   1170H  PRO*     1.3    67.4    -      -       +      +
   1172H  ALA*     3.8     2.9    -      -       -      -
   1173H  VAL*     2.9    29.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO1170 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1167H  ALA*     3.3    22.9    -      -       +      +
   1169H  LEU*     1.3    90.0    -      -       +      +
   1171H  LEU*     1.3    58.5    +      -       -      +
   1173H  VAL*     3.5     6.7    -      -       +      +
   1174H  VAL*     2.9    32.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1171 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1167H  ALA      4.0     6.7    +      -       -      +
   1168H  LEU*     3.2    15.5    +      -       +      +
   1170H  PRO*     1.3    79.3    -      -       -      +
   1172H  ALA*     1.3    51.4    +      -       -      +
   1174H  VAL*     4.7     1.0    -      -       -      +
   1175H  CYS*     2.7    39.7    +      -       -      +
   1259H  VAL*     5.9     7.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA1172 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1168H  LEU*     2.9    16.7    +      -       +      +
   1169H  LEU*     3.8     2.7    -      -       -      +
   1171H  LEU*     1.3    74.8    -      -       -      +
   1173H  VAL*     1.3    52.4    +      -       -      +
   1175H  CYS*     4.0     6.5    -      -       -      -
   1176H  TYR*     2.6    37.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL1173 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1169H  LEU      2.9    21.0    +      -       -      +
   1170H  PRO*     3.2     9.6    +      -       +      +
   1172H  ALA*     1.3    75.8    -      -       -      +
   1174H  VAL*     1.3    61.5    +      -       -      +
   1176H  TYR*     3.2     7.4    +      -       -      +
   1177H  PHE*     2.9    27.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL1174 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1170H  PRO      2.9    13.7    +      -       -      +
   1171H  LEU*     4.7     1.3    -      -       -      +
   1173H  VAL*     1.3    74.0    -      -       -      +
   1175H  CYS*     1.3    60.7    +      -       -      +
   1177H  PHE*     3.4    11.4    +      -       +      +
   1178H  ILE*     2.9    27.9    +      -       -      +
   1255H  ILE*     5.2    14.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS1175 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1171H  LEU      2.7    25.0    +      -       -      +
   1172H  ALA*     4.0     3.8    -      -       -      -
   1174H  VAL*     1.3    78.6    -      -       -      +
   1176H  TYR*     1.3    56.7    +      -       -      +
   1178H  ILE*     3.7     7.0    -      -       -      +
   1179H  GLN*     2.9    33.3    +      -       -      +
   1255H  ILE*     5.9     3.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR1176 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1172H  ALA*     2.6    25.0    +      -       -      +
   1173H  VAL*     3.2     7.2    +      -       -      +
   1175H  CYS*     1.3    75.2    -      -       -      +
   1177H  PHE*     1.3    61.8    +      -       -      +
   1179H  GLN*     3.3    29.0    -      -       +      +
   1180H  LYS*     2.9    41.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE1177 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    237H  ILE*     6.3     2.9    -      -       +      -
   1173H  VAL      2.9    13.2    +      -       -      +
   1174H  VAL*     3.4    13.9    -      -       +      +
   1176H  TYR*     1.3    79.8    -      -       +      +
   1178H  ILE*     1.3    59.3    +      -       +      +
   1180H  LYS*     3.8     3.5    -      -       -      +
   1181H  TYR*     3.0    71.6    +      +       +      +
   1247H  TRP*     5.7    11.2    -      +       -      -
----------------------------------------------------------
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Residues in contact with ILE1178 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1174H  VAL      2.9    16.6    +      -       -      +
   1175H  CYS*     3.7     8.1    -      -       -      +
   1176H  TYR      3.2     0.2    -      -       -      -
   1177H  PHE*     1.3    82.1    -      -       +      +
   1179H  GLN*     1.3    56.3    +      -       -      +
   1182H  PHE*     2.7    37.9    +      -       +      +
   1247H  TRP*     5.7     5.6    -      -       -      +
   1251H  CYS*     5.5    12.1    -      -       +      -
   1252H  MET*     6.4     1.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN1179 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1175H  CYS      2.9    20.1    +      -       -      +
   1176H  TYR*     3.3    43.5    +      -       +      +
   1178H  ILE*     1.3    74.5    -      -       -      +
   1180H  LYS*     1.3    60.3    +      -       -      +
   1182H  PHE*     4.8     2.5    -      -       -      -
   1183H  ARG*     2.7    41.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS1180 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1176H  TYR*     2.9    30.7    +      -       +      +
   1177H  PHE*     3.8     4.0    -      -       -      +
   1179H  GLN*     1.3    86.6    -      -       -      +
   1181H  TYR*     1.3    72.0    +      -       +      +
   1183H  ARG*     3.1     6.4    +      -       -      +
   1184H  VAL*     3.0    26.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR1181 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    237H  ILE*     5.1     7.4    -      -       +      +
    240H  ALA*     4.4    12.7    -      -       +      +
    241H  HIS*     3.5    49.3    +      -       +      +
   1177H  PHE*     3.0    53.1    +      +       +      +
   1178H  ILE*     5.6     0.4    -      -       -      -
   1180H  LYS*     1.3    89.7    -      -       +      +
   1182H  PHE*     1.3    57.6    +      -       -      +
   1184H  VAL*     3.8     6.9    -      -       +      +
   1185H  ALA*     2.9    31.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE1182 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1178H  ILE*     2.7    24.5    +      -       +      +
   1179H  GLN*     4.8     2.5    -      -       -      +
   1181H  TYR*     1.3    75.3    -      -       -      +
   1183H  ARG*     1.3    56.1    +      -       -      +
   1185H  ALA*     4.8     3.8    -      -       +      -
   1186H  SER*     2.6    65.3    +      -       -      +
   1244H  ALA*     3.4    35.4    -      -       +      -
   1247H  TRP*     4.7    20.6    -      +       +      -
   1248H  LEU*     3.6    27.6    -      -       +      -
   1299H  VAL*     5.0    15.0    -      -       +      -
   1300H  ARG*     5.9     1.1    -      -       -      -
   1303H  ALA*     4.7    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG1183 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1179H  GLN*     2.7    28.3    +      -       -      +
   1180H  LYS*     3.1     6.0    +      -       -      +
   1182H  PHE*     1.3    79.1    -      -       -      +
   1184H  VAL*     1.3    57.0    +      -       -      +
   1186H  SER*     4.2     2.0    -      -       -      -
   1187H  ARG*     3.0    31.4    +      -       -      +
   1306H  GLU*     6.1     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL1184 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240H  ALA*     4.8    16.4    -      -       +      +
    246H  ASP*     6.0     3.4    -      -       +      -
   1180H  LYS      3.0    12.2    +      -       -      +
   1181H  TYR*     3.8    12.6    -      -       +      +
   1182H  PHE      3.3     0.2    -      -       -      -
   1183H  ARG*     1.3    76.1    -      -       -      +
   1185H  ALA*     1.3    58.3    +      -       -      +
   1187H  ARG*     3.2     6.6    +      -       -      +
   1188H  ASP*     3.0    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA1185 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236H  PHE*     5.3     9.2    -      -       +      +
    237H  ILE*     5.9     0.9    -      -       -      -
    240H  ALA*     3.8    20.4    -      -       +      -
   1181H  TYR      2.9    15.9    +      -       -      +
   1182H  PHE*     4.8     4.7    -      -       +      +
   1184H  VAL*     1.3    77.3    -      -       -      +
   1186H  SER*     1.3    58.3    +      -       -      +
   1188H  ASP*     3.8     7.4    -      -       -      +
   1189H  LEU*     2.9    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER1186 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1182H  PHE*     2.6    55.2    +      -       -      +
   1183H  ARG*     4.2     2.2    -      -       -      -
   1185H  ALA*     1.3    77.0    -      -       -      +
   1187H  ARG*     1.3    58.2    +      -       -      +
   1189H  LEU*     4.1     4.7    -      -       -      +
   1190H  GLN*     2.9    32.6    +      -       -      +
   1244H  ALA*     5.6     4.3    -      -       -      -
   1303H  ALA*     5.3     8.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG1187 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1183H  ARG      3.0    20.7    +      -       -      +
   1184H  VAL*     3.2     5.6    +      -       -      +
   1186H  SER*     1.3    76.2    -      -       -      +
   1188H  ASP*     1.3    56.0    +      -       -      +
   1190H  GLN*     4.2     2.7    -      -       -      +
   1191H  GLN*     2.9    30.7    +      -       -      +
   1306H  GLU*     6.0     6.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP1188 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250H  ILE*     3.5    37.0    -      -       +      +
   1184H  VAL      3.0    16.1    +      -       -      +
   1185H  ALA*     3.8     8.3    -      -       -      +
   1187H  ARG*     1.3    78.5    -      -       -      +
   1189H  LEU*     1.3    57.5    +      -       -      +
   1191H  GLN*     3.3     6.2    +      -       -      +
   1192H  LEU*     2.9    31.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1189 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1185H  ALA      2.9    19.6    +      -       -      +
   1186H  SER*     4.1     5.4    -      -       -      +
   1188H  ASP*     1.3    74.7    -      -       -      +
   1190H  GLN*     1.3    59.2    +      -       -      +
   1192H  LEU*     4.4     2.2    -      -       -      +
   1193H  ASP*     2.9    35.6    +      -       -      +
   1240H  PHE*     4.9    25.7    -      -       +      +
   1241H  LEU*     6.0     1.1    -      -       -      -
   1244H  ALA*     4.9    10.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN1190 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1186H  SER      2.9    18.6    +      -       -      +
   1187H  ARG*     4.4     2.7    -      -       -      +
   1189H  LEU*     1.3    76.4    -      -       -      +
   1191H  GLN*     1.3    51.8    +      -       -      +
   1193H  ASP*     4.7     2.0    -      -       -      -
   1194H  ASP*     2.6    41.5    +      -       -      +
   1241H  LEU*     6.5     1.3    -      -       -      -
   1307H  ILE*     5.5    11.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN1191 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250H  ILE      5.6     4.5    -      -       -      +
   1187H  ARG      2.9    22.1    +      -       -      +
   1188H  ASP*     3.4     7.9    -      -       -      +
   1189H  LEU      3.2     0.2    -      -       -      -
   1190H  GLN*     1.3    78.3    -      -       -      +
   1192H  LEU*     1.3    58.8    +      -       -      +
   1194H  ASP*     3.7     3.3    -      -       -      +
   1195H  THR*     2.9    30.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU1192 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250H  ILE      5.5     5.6    -      -       -      +
    253H  LEU*     4.4    23.1    -      -       +      -
    254H  PRO*     4.9    10.4    -      -       +      +
   1188H  ASP      2.9    16.5    +      -       -      +
   1189H  LEU*     4.4     2.0    -      -       -      +
   1191H  GLN*     1.3    73.7    -      -       -      +
   1193H  ASP*     1.3    61.1    +      -       -      +
   1195H  THR*     3.2     6.4    +      -       -      +
   1196H  THR*     3.0    29.3    +      -       -      -
   1237H  ALA*     5.5     0.9    -      -       -      -
   1240H  PHE*     6.0     5.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP1193 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1189H  LEU      2.9    19.4    +      -       -      +
   1190H  GLN*     4.7     2.7    -      -       -      +
   1192H  LEU*     1.3    76.8    -      -       -      +
   1194H  ASP*     1.3    61.2    +      -       -      +
   1196H  THR*     3.5    11.5    +      -       -      -
   1197H  GLN*     4.4     5.0    +      -       -      +
   1237H  ALA*     4.1    36.3    -      -       +      +
   1240H  PHE*     5.6     3.8    -      -       +      -
   1241H  LEU*     5.4     9.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP1194 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1190H  GLN      2.6    25.0    +      -       -      +
   1191H  GLN*     3.7     4.0    -      -       -      +
   1193H  ASP*     1.3    79.3    -      -       -      +
   1195H  THR*     1.3    61.3    +      -       -      +
   1196H  THR      3.5     0.5    +      -       -      -
   1197H  GLN*     4.0    11.4    +      -       -      +
   1198H  LEU      5.5     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR1195 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1191H  GLN      2.9    18.4    +      -       -      -
   1192H  LEU*     3.2     6.3    +      -       -      -
   1194H  ASP*     1.3    73.9    -      -       -      +
   1196H  THR*     1.3    62.2    +      -       -      +
   1197H  GLN      3.3     2.7    +      -       -      -
   1198H  LEU*     4.4     3.6    +      -       -      +
   1199H  PRO*     4.2    10.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR1196 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1192H  LEU      3.0    15.3    +      -       -      -
   1193H  ASP*     3.8    11.2    -      -       -      -
   1194H  ASP      3.3     1.6    -      -       -      -
   1195H  THR*     1.3    77.2    -      -       -      +
   1197H  GLN*     1.3    62.6    +      -       -      +
   1198H  LEU      3.7     0.4    -      -       -      -
   1199H  PRO*     3.7     9.7    -      -       -      +
   1200H  LEU      4.8     1.2    +      -       -      -
   1233H  SER*     5.4     5.6    -      -       -      -
   1234H  ASN*     2.9    29.5    +      -       -      +
   1237H  ALA*     4.5    12.3    -      -       -      -
----------------------------------------------------------
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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