Contacts of the helix formed by residues 1178 - 1199 (chain A) in PDB entry 5ID6


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 ASN1178 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    837A  ASN*     5.1     4.1    -      -       -      +
    840A  TYR*     3.5    25.4    +      -       -      -
   1147A  VAL*     6.3     1.1    -      -       +      -
   1148A  ASP*     3.7    17.5    -      -       +      +
   1149A  PHE*     5.1     0.2    -      -       -      +
   1150A  LEU*     4.4     2.4    -      -       -      +
   1164A  SER*     3.1    12.4    +      -       -      -
   1168A  GLU*     6.0     3.4    -      -       +      +
   1176A  PRO*     3.9     4.2    -      -       -      +
   1177A  LYS*     1.3    83.6    +      -       -      +
   1179A  ALA*     1.3    62.1    +      -       -      +
   1180A  ASP*     3.2    10.8    +      -       -      +
   1181A  ALA*     2.7    35.0    +      -       -      +
   1182A  ASN*     3.3    20.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA1179 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1002A  SER*     3.7    12.5    +      -       -      +
   1138A  ARG*     3.3    49.6    -      -       +      +
   1148A  ASP*     3.3    12.2    +      -       -      +
   1149A  PHE*     5.0     0.4    -      -       -      +
   1150A  LEU*     4.1    19.9    -      -       +      +
   1178A  ASN*     1.3    74.8    -      -       -      +
   1180A  ASP*     1.3    67.9    +      -       -      +
   1182A  ASN*     3.3    10.0    +      -       -      +
   1183A  GLY      3.3     8.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP1180 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    832A  ASP*     4.0     7.5    -      -       -      +
    834A  GLY*     3.4    11.0    -      -       -      -
    835A  GLU      3.2    18.6    +      -       -      -
    836A  ARG*     3.1    20.1    +      -       -      +
    837A  ASN*     2.7    35.4    +      -       -      +
    840A  TYR*     4.0    15.6    -      -       +      +
   1002A  SER*     5.4     0.2    -      -       -      -
   1138A  ARG*     3.8    16.2    +      -       -      +
   1148A  ASP*     4.4     6.4    +      -       -      -
   1178A  ASN*     3.2     9.0    +      -       -      +
   1179A  ALA*     1.3    77.7    -      -       -      +
   1181A  ALA*     1.3    61.6    +      -       -      +
   1183A  GLY*     3.3    10.2    +      -       -      -
   1184A  ALA*     3.4    11.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA1181 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    840A  TYR*     3.5    28.2    -      -       +      -
    842A  VAL*     3.3     6.7    -      -       +      +
    853A  GLN*     3.5    24.9    -      -       -      +
   1176A  PRO*     4.1     2.2    -      -       +      -
   1177A  LYS      3.9     7.0    -      -       -      +
   1178A  ASN*     2.7    24.2    +      -       -      +
   1180A  ASP*     1.3    70.0    -      -       -      +
   1182A  ASN*     1.3    56.7    +      -       -      +
   1184A  ALA      3.0     2.4    +      -       -      -
   1185A  TYR*     2.6    38.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN1182 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1001A  THR      3.5     0.9    +      -       -      -
   1002A  SER      2.7    28.9    +      -       -      -
   1004A  ILE*     2.9    19.7    +      -       -      +
   1006A  PRO*     3.1    25.4    -      -       -      +
   1150A  LEU*     3.4    22.7    -      -       +      +
   1176A  PRO*     3.4    13.3    -      -       +      +
   1178A  ASN      3.3     6.6    +      -       -      +
   1179A  ALA      3.3    10.5    +      -       -      +
   1180A  ASP      3.3     0.6    -      -       -      -
   1181A  ALA*     1.3    78.1    -      -       -      +
   1183A  GLY*     1.3    52.6    +      -       -      +
   1185A  TYR*     3.2     0.9    +      -       -      +
   1186A  ASN*     2.7    60.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY1183 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    832A  ASP*     3.5    20.0    -      -       -      -
   1001A  THR*     3.3    17.6    +      -       -      -
   1002A  SER*     3.7    11.1    +      -       -      -
   1179A  ALA      3.3     3.8    +      -       -      -
   1180A  ASP      3.3     4.3    +      -       -      -
   1181A  ALA      3.1     0.8    -      -       -      -
   1182A  ASN*     1.3    80.6    -      -       -      +
   1184A  ALA*     1.3    56.2    +      -       -      +
   1186A  ASN*     3.4     0.7    +      -       -      -
   1187A  ILE*     2.9    34.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA1184 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    830A  GLY*     3.6    22.8    -      -       -      +
    832A  ASP*     3.5    16.5    -      -       +      +
    840A  TYR*     3.3    29.2    -      -       +      +
    842A  VAL*     3.5    19.5    -      -       +      +
   1180A  ASP      3.4     7.9    +      -       -      +
   1181A  ALA      3.0     3.3    +      -       -      +
   1183A  GLY*     1.3    71.7    -      -       -      +
   1185A  TYR*     1.3    65.6    +      -       -      +
   1187A  ILE*     3.5     4.1    +      -       -      +
   1188A  ALA*     3.3    16.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR1185 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    842A  VAL*     3.4    14.1    -      -       +      +
    844A  VAL*     3.6    13.7    -      -       +      -
    848A  GLY*     2.9    30.3    +      -       -      -
    850A  ILE*     3.5    28.3    -      -       +      -
   1006A  PRO*     3.8    17.7    +      -       +      -
   1174A  ILE      5.1     1.4    +      -       -      -
   1175A  LEU*     4.8     8.8    -      -       +      +
   1176A  PRO*     3.5    24.0    -      -       +      -
   1181A  ALA      2.6    21.0    +      -       -      +
   1182A  ASN*     3.4     9.0    -      -       -      +
   1184A  ALA*     1.3    72.3    -      -       -      +
   1186A  ASN*     1.3    69.8    +      -       -      +
   1188A  ALA*     3.2     7.8    +      -       -      +
   1189A  ARG*     3.1    57.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN1186 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1001A  THR*     2.8    41.1    +      -       -      +
   1004A  ILE*     3.6     9.3    +      -       -      +
   1006A  PRO*     4.7     1.0    -      -       -      +
   1182A  ASN*     2.7    43.8    +      -       -      +
   1185A  TYR*     1.3    75.1    -      -       -      +
   1187A  ILE*     1.3    66.6    +      -       -      +
   1188A  ALA      3.3     0.3    +      -       -      -
   1189A  ARG*     2.3    40.3    +      -       -      +
   1190A  LYS*     3.3    24.9    +      -       -      +
   1218A  TRP*     3.5    14.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE1187 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    831A  ILE      4.0    14.1    -      -       -      +
    832A  ASP*     3.6    26.2    -      -       -      +
    923A  ALA*     3.5    37.8    -      -       +      +
    924A  LEU*     4.2     3.6    -      -       -      +
    925A  GLU*     5.0    10.8    -      -       +      +
    996A  ILE*     3.9    23.7    -      -       +      +
    998A  ALA*     4.6    13.7    -      -       +      +
   1001A  THR*     4.1    20.8    -      -       +      +
   1183A  GLY      2.9    22.2    +      -       -      +
   1184A  ALA      3.9     5.4    -      -       -      +
   1185A  TYR      3.4     0.4    -      -       -      -
   1186A  ASN*     1.3    76.6    -      -       -      +
   1188A  ALA*     1.3    63.4    +      -       -      +
   1190A  LYS*     3.5    13.9    +      -       -      +
   1191A  VAL      3.7     3.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA1188 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    828A  VAL*     3.9    23.1    -      -       +      +
    830A  GLY*     3.9    13.7    -      -       -      +
    842A  VAL      4.5     2.0    -      -       -      +
    844A  VAL*     4.5    13.2    -      -       +      -
    923A  ALA*     3.9    10.1    -      -       -      -
   1184A  ALA      3.3    12.3    +      -       -      +
   1185A  TYR*     3.2    11.4    +      -       -      +
   1186A  ASN      3.1     0.6    -      -       -      -
   1187A  ILE*     1.3    76.2    -      -       -      +
   1189A  ARG*     1.3    60.0    +      -       -      +
   1191A  VAL*     3.0    20.8    +      -       -      +
   1192A  LEU*     3.0    14.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG1189 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    844A  VAL*     5.3     1.6    -      -       +      -
    848A  GLY*     4.8     5.4    -      -       -      -
   1004A  ILE*     5.4     2.4    -      -       -      +
   1005A  ASP      5.5     0.2    +      -       -      -
   1006A  PRO*     4.0    19.9    +      -       -      +
   1009A  GLY*     5.6     1.0    -      -       -      +
   1185A  TYR*     3.1    57.7    +      -       +      +
   1186A  ASN*     2.3    38.8    +      -       -      +
   1188A  ALA*     1.3    75.6    -      -       -      +
   1190A  LYS*     1.3    57.3    +      -       -      +
   1192A  LEU*     3.0    21.8    +      -       +      +
   1193A  TRP*     2.8    27.9    +      -       -      +
   1218A  TRP*     3.9    26.1    -      -       +      -
   1221A  TYR*     3.7    15.3    +      -       +      +
   1222A  ALA*     3.5    32.3    +      -       -      +
   1225A  SER*     4.1    10.9    +      -       -      -
   1226A  VAL*     5.0     5.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS1190 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    996A  ILE*     3.5    33.0    -      -       +      +
    997A  PRO*     2.9    22.1    +      -       -      +
    999A  TRP*     2.6    32.3    +      -       -      +
   1001A  THR*     3.7    10.9    -      -       +      +
   1186A  ASN      3.3     9.9    +      -       -      +
   1187A  ILE      3.6     8.7    -      -       -      +
   1188A  ALA      3.2     0.6    -      -       -      -
   1189A  ARG*     1.3    75.8    -      -       -      +
   1191A  VAL*     1.3    58.8    +      -       -      +
   1193A  TRP*     3.2    14.9    -      -       -      +
   1194A  ALA*     2.9    24.3    +      -       -      +
   1213A  ILE*     3.9    18.3    -      -       +      +
   1215A  ASN*     4.9     2.8    +      -       -      -
   1218A  TRP*     3.4    49.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL1191 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    828A  VAL*     4.0     7.9    -      -       +      -
    921A  VAL*     3.8    21.3    -      -       +      -
    922A  ILE      4.8     0.2    -      -       -      +
    923A  ALA*     3.4    27.1    -      -       +      -
    994A  PHE*     3.7    35.2    -      -       +      -
    996A  ILE*     3.9    11.9    -      -       +      -
   1187A  ILE      3.7     0.4    +      -       -      -
   1188A  ALA      3.0    10.4    +      -       -      +
   1190A  LYS*     1.3    75.1    -      -       -      +
   1192A  LEU*     1.3    54.7    +      -       -      +
   1194A  ALA*     2.9     7.9    +      -       +      +
   1195A  ILE*     2.7    52.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU1192 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    826A  PRO*     4.2     3.1    -      -       +      +
    828A  VAL*     3.7    22.4    -      -       +      -
    844A  VAL*     3.4    16.8    -      -       +      -
    845A  ASP      3.3    26.9    -      -       -      +
    846A  GLY*     4.1    18.8    -      -       -      +
    847A  LYS      4.4     1.6    -      -       -      +
    848A  GLY*     3.7    17.3    -      -       -      +
   1188A  ALA      3.0    12.9    +      -       -      +
   1189A  ARG*     3.0    16.0    +      -       +      +
   1191A  VAL*     1.3    73.3    -      -       -      +
   1193A  TRP*     1.3    58.8    +      -       -      +
   1195A  ILE*     3.1    17.5    +      -       +      +
   1196A  GLY*     2.8    26.7    +      -       -      -
   1221A  TYR*     3.4    19.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP1193 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1189A  ARG      2.8    16.2    +      -       -      +
   1190A  LYS*     3.2    13.0    -      -       -      +
   1192A  LEU*     1.3    72.7    -      -       -      +
   1194A  ALA*     1.3    75.8    +      -       +      +
   1196A  GLY*     3.0    12.8    +      -       -      -
   1197A  GLN*     3.1    53.7    +      -       +      +
   1210A  LYS*     4.2    12.6    -      -       +      -
   1211A  ILE*     3.5    22.4    -      -       -      -
   1213A  ILE*     3.5    44.4    -      -       +      -
   1217A  GLU*     3.6    43.0    +      -       +      +
   1221A  TYR*     3.9    40.5    -      +       +      -
----------------------------------------------------------
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Residues in contact with ALA1194 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    994A  PHE*     5.2     4.7    -      -       +      -
    996A  ILE*     6.0     1.3    -      -       +      -
   1190A  LYS      2.9    12.6    +      -       -      +
   1191A  VAL*     2.9    16.1    +      -       +      +
   1193A  TRP*     1.3    85.2    -      -       +      +
   1195A  ILE*     1.3    66.0    +      -       +      +
   1197A  GLN*     3.1    15.3    +      -       -      +
   1198A  PHE*     3.2    22.8    +      -       +      -
   1211A  ILE*     3.7    34.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE1195 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    820A  LEU*     4.0    38.8    -      -       +      +
    826A  PRO*     4.2    20.9    -      -       +      -
    828A  VAL*     4.1     7.6    -      -       +      -
    921A  VAL*     4.8     1.3    -      -       +      -
   1191A  VAL*     2.7    37.8    +      -       +      +
   1192A  LEU*     3.4    27.6    -      -       +      +
   1194A  ALA*     1.3    71.4    -      -       -      +
   1196A  GLY*     1.3    59.1    +      -       -      +
   1198A  PHE*     2.9    28.6    +      -       +      +
   1199A  LYS*     3.1    38.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY1196 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1192A  LEU      2.8    13.6    +      -       -      -
   1193A  TRP*     3.0     6.5    +      -       -      -
   1195A  ILE*     1.3    78.8    -      -       -      +
   1197A  GLN*     1.3    63.1    +      -       -      +
   1199A  LYS*     3.5    19.8    +      -       -      +
   1200A  LYS*     3.5    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN1197 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1193A  TRP*     3.1    60.9    +      -       +      +
   1194A  ALA*     3.1     9.0    +      -       -      +
   1196A  GLY*     1.3    73.3    -      -       -      +
   1198A  PHE*     1.3    66.6    +      -       -      +
   1200A  LYS*     3.2    46.6    +      -       -      +
   1201A  ALA*     3.6     9.2    +      -       -      +
   1209A  VAL*     3.8    22.8    -      -       +      +
   1210A  LYS*     4.5     5.6    +      -       -      +
   1217A  GLU*     4.7     3.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE1198 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    817A  ARG*     3.8    43.1    -      -       +      +
    820A  LEU*     4.2    29.4    -      -       +      -
    821A  LYS*     3.6    18.4    -      -       +      +
    994A  PHE*     4.3    13.0    -      +       -      -
   1194A  ALA*     3.5    14.4    -      -       +      -
   1195A  ILE*     2.9    17.1    +      -       +      +
   1197A  GLN*     1.3    72.0    -      -       -      +
   1199A  LYS*     1.3    60.0    +      -       -      +
   1200A  LYS      2.9    10.8    +      -       -      -
   1201A  ALA      2.9    15.9    +      -       -      +
   1206A  LEU*     3.6    27.5    -      -       +      +
   1209A  VAL*     3.9    17.7    -      -       +      -
   1211A  ILE*     3.4    37.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS1199 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    820A  LEU      3.5    12.1    +      -       -      -
    821A  LYS*     3.1    38.3    +      -       +      +
    822A  HIS      4.7     0.2    -      -       -      -
    823A  ASP      2.6    31.7    +      -       -      -
    824A  ASP*     4.5     5.2    -      -       -      +
    826A  PRO*     4.8     5.4    -      -       -      -
   1195A  ILE*     3.1    30.8    +      -       +      +
   1196A  GLY*     3.7    13.2    -      -       -      +
   1197A  GLN      3.3     0.2    -      -       -      -
   1198A  PHE*     1.3    79.8    -      -       -      +
   1200A  LYS*     1.3    56.6    +      -       -      +
   1201A  ALA      3.5     1.3    -      -       -      +
----------------------------------------------------------
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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