Contacts of the helix formed by residues 1187 - 1208 (chain B) in PDB entry 1VDV


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 ASN1187 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    575B  ARG      3.5     7.3    -      -       -      +
    577B  LEU*     2.6    33.2    +      -       -      +
   1044B  THR*     4.3     2.8    -      -       -      +
   1045B  LYS*     4.4     8.8    -      -       -      +
   1048B  GLN*     3.1    22.3    +      -       -      +
   1185B  SER*     3.0     6.7    +      -       -      -
   1186B  LEU*     1.3    81.9    -      -       -      +
   1188B  PRO*     1.3    62.3    -      -       -      +
   1189B  ALA*     3.0    13.3    +      -       -      +
   1190B  ILE*     2.9    37.3    +      -       +      +
   1191B  ASP*     2.9    27.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO1188 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    195B  LEU*     4.1     2.2    -      -       +      -
    560B  PHE*     3.6    47.8    -      -       +      -
    561B  GLN      5.3     0.9    -      -       -      +
    574B  GLY*     3.3    27.1    -      -       -      +
    575B  ARG      3.5     6.1    -      -       -      +
    576B  PRO*     3.9    11.9    -      -       +      -
   1185B  SER*     3.0    13.7    -      -       -      +
   1187B  ASN*     1.3    85.6    -      -       -      +
   1189B  ALA*     1.3    57.4    +      -       -      +
   1191B  ASP*     3.8     0.9    -      -       +      -
   1192B  ILE*     2.9    35.9    +      -       -      +
   1243B  LEU*     3.9     9.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA1189 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109B  HIS*     3.4    51.6    -      -       +      +
    195B  LEU*     3.6    13.9    -      -       +      +
    576B  PRO*     3.8    12.6    -      -       +      -
    577B  LEU      4.6     0.7    -      -       -      +
   1187B  ASN*     3.0    10.6    +      -       -      +
   1188B  PRO*     1.3    80.8    -      -       -      +
   1190B  ILE*     1.3    60.1    +      -       +      +
   1192B  ILE*     4.1     1.4    -      -       -      +
   1193B  GLY*     3.0    24.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE1190 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109B  HIS*     5.4     4.3    -      -       +      +
    112B  GLN*     5.9     4.4    -      -       +      -
    577B  LEU      4.2     2.2    -      -       -      +
    578B  PRO*     5.2     0.4    -      -       +      -
    579B  HIS*     4.1    33.4    -      -       +      +
   1039B  GLY      6.0     0.4    -      -       -      +
   1040B  GLN      3.2    27.1    -      -       -      +
   1041B  GLY*     4.6    12.3    -      -       -      +
   1044B  THR*     5.1     4.7    -      -       +      -
   1045B  LYS*     3.8    20.2    -      -       +      +
   1187B  ASN*     2.9    39.5    +      -       +      +
   1189B  ALA*     1.3    77.6    -      -       +      +
   1191B  ASP*     1.3    57.9    +      -       -      +
   1193B  GLY*     3.2     3.3    +      -       -      -
   1194B  GLN*     2.9    31.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP1191 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1045B  LYS*     2.7    31.8    +      -       -      -
   1182B  VAL*     4.1    10.9    -      -       +      +
   1185B  SER*     2.5    37.3    +      -       -      +
   1186B  LEU      4.0     3.3    +      -       -      -
   1187B  ASN      2.9    12.9    +      -       -      +
   1188B  PRO*     4.1     2.9    -      -       +      +
   1190B  ILE*     1.3    73.9    -      -       -      +
   1192B  ILE*     1.3    64.5    +      -       -      +
   1194B  GLN*     3.2     7.3    +      -       -      +
   1195B  VAL*     3.0    28.4    +      -       -      +
   1243B  LEU*     4.4     9.4    -      -       +      -
   1256B  SER*     5.9     0.9    -      -       -      -
   1257B  LYS      5.1     3.1    -      -       -      +
   1259B  VAL*     3.4    20.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE1192 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154B  ARG*     4.3     0.9    -      -       -      +
    195B  LEU*     3.9    20.4    -      -       +      -
    558B  GLN*     3.7    38.1    -      -       +      -
    559B  LEU      4.6     3.4    -      -       -      +
    560B  PHE*     4.2    13.0    -      -       +      -
   1188B  PRO      2.9    22.9    +      -       -      +
   1189B  ALA      4.1     2.2    -      -       -      +
   1191B  ASP*     1.3    74.8    -      -       -      +
   1193B  GLY*     1.3    59.1    +      -       -      +
   1195B  VAL*     3.2     7.4    +      -       -      +
   1196B  GLU*     2.9    50.8    +      -       +      +
   1241B  VAL*     4.2    13.9    -      -       +      +
   1243B  LEU*     3.9    26.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY1193 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109B  HIS*     6.1     2.5    -      -       -      -
    112B  GLN*     3.2    26.3    +      -       -      -
    151B  THR      4.3     1.9    -      -       -      +
    155B  PRO*     6.3     2.2    -      -       -      -
   1189B  ALA      3.0    16.3    +      -       -      -
   1190B  ILE*     3.5     6.1    -      -       -      -
   1191B  ASP      3.1     0.2    -      -       -      -
   1192B  ILE*     1.3    79.5    -      -       -      +
   1194B  GLN*     1.3    55.7    +      -       -      +
   1196B  GLU*     4.1     9.2    -      -       -      +
   1197B  GLY*     2.9    23.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN1194 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112B  GLN*     3.2    27.3    +      -       -      -
    912B  ARG*     3.3     9.4    +      -       -      +
   1040B  GLN*     3.5    21.2    +      -       -      +
   1045B  LYS*     5.5     0.4    -      -       -      +
   1190B  ILE*     2.9    25.5    +      -       +      +
   1191B  ASP      3.2     7.8    +      -       -      +
   1193B  GLY*     1.3    73.4    -      -       -      +
   1195B  VAL*     1.3    61.1    +      -       -      +
   1197B  GLY*     5.0     0.2    -      -       -      -
   1198B  ALA*     2.9    34.9    +      -       -      +
   1259B  VAL*     3.8    32.7    -      -       +      +
   1260B  GLY*     3.7     7.4    -      -       -      -
   1263B  PRO*     4.5     0.8    -      -       -      +
   4003B  MTE      2.8    42.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL1195 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1178B  ILE*     4.0    28.5    -      -       +      -
   1180B  MET*     3.9    27.1    -      -       +      -
   1191B  ASP      3.0    19.9    +      -       -      +
   1192B  ILE*     3.5    10.8    -      -       -      +
   1194B  GLN*     1.3    78.2    -      -       -      +
   1196B  GLU*     1.3    57.6    +      -       -      +
   1199B  PHE*     2.9    31.9    +      -       -      +
   1241B  VAL*     3.9    20.9    -      -       +      -
   1243B  LEU*     4.6     7.6    -      -       +      -
   1259B  VAL*     3.9    12.1    -      -       +      -
   1263B  PRO*     3.8    17.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU1196 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151B  THR      3.8    13.0    -      -       -      +
    152B  GLY*     4.3     1.3    -      -       -      -
    154B  ARG*     2.7    59.0    +      -       -      +
    155B  PRO*     3.8     9.5    -      -       -      +
    558B  GLN*     4.7     1.4    -      -       -      +
   1192B  ILE*     2.9    28.6    +      -       -      +
   1193B  GLY*     4.1     4.7    -      -       -      +
   1195B  VAL*     1.3    73.0    -      -       -      +
   1197B  GLY*     1.3    66.7    +      -       -      +
   1199B  PHE*     3.4     5.6    +      -       -      +
   1200B  VAL*     3.0    30.0    +      -       -      +
   1239B  PHE*     4.1    18.5    -      -       +      +
   1241B  VAL*     3.8    28.0    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY1197 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149B  ARG      4.8     2.1    -      -       -      +
    150B  CYS      3.0    28.4    -      -       -      +
    151B  THR      3.8     6.9    +      -       -      -
    152B  GLY      4.1     1.6    -      -       -      -
    912B  ARG*     4.0     7.9    -      -       -      -
   1193B  GLY      2.9    13.6    +      -       -      -
   1194B  GLN      4.0     0.2    -      -       -      -
   1196B  GLU*     1.3    78.0    -      -       -      +
   1198B  ALA*     1.3    61.6    +      -       -      +
   1200B  VAL*     3.4     3.5    +      -       -      +
   1201B  GLN*     3.1    25.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA1198 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    912B  ARG*     3.6    30.7    -      -       -      +
   1194B  GLN      2.9    19.5    +      -       -      +
   1197B  GLY*     1.3    72.9    -      -       -      +
   1199B  PHE*     1.3    64.9    +      -       -      +
   1201B  GLN*     3.1     2.8    +      -       -      +
   1202B  GLY      2.9    18.7    +      -       -      -
   1260B  GLY      3.9     5.4    -      -       -      +
   1263B  PRO*     3.9     8.3    -      -       +      -
   1264B  LEU*     3.5    35.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE1199 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1158B  ALA*     4.5     1.3    -      -       +      -
   1160B  SER*     3.9     1.1    -      -       -      -
   1176B  THR*     3.6    35.4    -      -       +      -
   1178B  ILE*     3.5    23.1    -      -       +      -
   1195B  VAL*     2.9    20.3    +      -       +      +
   1196B  GLU*     3.6     5.6    -      -       -      +
   1198B  ALA*     1.3    76.7    -      -       -      +
   1200B  VAL*     1.3    63.4    +      -       +      +
   1202B  GLY*     3.2     2.6    +      -       -      -
   1203B  LEU*     2.8    35.7    +      -       +      +
   1236B  PRO*     4.5     5.8    -      -       +      -
   1239B  PHE*     3.9    17.9    -      +       -      -
   1263B  PRO      4.1    10.2    +      -       -      +
   1264B  LEU      4.5     1.6    -      -       -      -
   1266B  LEU*     3.1    28.9    -      -       +      -
   1267B  GLY*     3.4    18.1    -      -       -      -
   1269B  SER*     3.8     4.0    -      -       -      -
   1270B  VAL*     3.9    22.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL1200 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148B  CYS      6.0     0.4    -      -       -      +
    152B  GLY*     3.5    31.6    -      -       -      +
    153B  TYR*     4.8     4.9    -      -       +      -
   1196B  GLU      3.0    17.4    +      -       -      +
   1197B  GLY      3.9     3.6    -      -       -      +
   1199B  PHE*     1.3    84.7    -      -       +      +
   1201B  GLN*     1.3    61.1    +      -       +      +
   1203B  LEU*     3.1    13.4    +      -       +      +
   1204B  GLY      2.8    23.6    +      -       -      -
   1230B  PRO*     3.4    31.9    -      -       +      +
   1235B  ILE*     4.1    15.7    -      -       +      -
   1236B  PRO*     5.4     0.4    -      -       +      -
   1239B  PHE*     4.5     6.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN1201 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149B  ARG*     3.2    57.3    -      -       -      +
    739B  GLN*     3.2    14.9    +      -       -      +
    741B  HIS      4.0     0.8    +      -       -      -
    798B  PHE*     3.4    30.1    -      -       -      -
    911B  PHE*     3.9    14.4    -      -       +      -
    912B  ARG*     3.0    38.7    +      -       -      +
   1197B  GLY      3.1    12.4    +      -       -      +
   1198B  ALA      3.6     7.0    -      -       -      +
   1200B  VAL*     1.3    76.7    -      -       +      +
   1202B  GLY*     1.3    57.8    +      -       -      +
   1204B  GLY*     3.2     0.7    +      -       -      -
   1205B  LEU*     2.9    23.0    +      -       -      +
   1230B  PRO*     5.2     0.2    -      -       -      -
   1264B  LEU*     4.0     9.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY1202 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1198B  ALA      2.9    10.5    +      -       -      -
   1199B  PHE      3.6     1.1    -      -       -      -
   1201B  GLN*     1.3    75.5    -      -       -      +
   1203B  LEU*     1.3    64.2    +      -       -      +
   1205B  LEU*     3.0     4.0    +      -       -      +
   1206B  PHE*     2.9    36.0    +      -       -      -
   1264B  LEU*     3.5    37.2    -      -       -      +
   1267B  GLY*     4.3     2.0    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU1203 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1171B  HIS*     5.3     0.2    -      -       -      +
   1173B  ASN*     3.7    12.6    -      -       -      +
   1199B  PHE*     2.8    32.2    +      -       +      +
   1200B  VAL*     3.2    19.3    -      -       +      +
   1202B  GLY*     1.3    75.6    -      -       -      +
   1204B  GLY*     1.3    55.9    +      -       -      +
   1206B  PHE*     3.6     0.8    +      -       -      -
   1207B  THR*     2.6    50.5    +      -       +      +
   1208B  LEU*     5.4     2.9    -      -       +      -
   1230B  PRO*     4.9     4.3    -      -       +      -
   1234B  SER*     3.6    29.4    -      -       -      +
   1235B  ILE*     4.6     1.6    -      -       -      -
   1236B  PRO*     4.5     8.5    -      -       +      -
   1267B  GLY*     4.1    10.8    -      -       -      +
   1270B  VAL*     3.7    33.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY1204 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1200B  VAL      2.8    10.3    +      -       -      -
   1201B  GLN      3.2     1.5    +      -       -      -
   1202B  GLY      3.1     0.2    -      -       -      -
   1203B  LEU*     1.3    75.5    -      -       -      +
   1205B  LEU*     1.3    64.7    +      -       -      +
   1208B  LEU*     3.0    12.3    +      -       -      -
   1209B  GLU*     2.9    48.7    +      -       -      -
   1230B  PRO*     3.6    16.4    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU1205 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    736B  ILE*     4.5     9.2    -      -       +      -
    737B  GLY      3.9    11.9    -      -       -      +
    738B  GLY      3.9    21.3    -      -       -      +
    739B  GLN*     3.6    24.7    -      -       +      +
    839B  ARG*     3.7    29.2    -      -       -      +
    917B  PRO*     4.2    11.0    -      -       +      -
   1201B  GLN      2.9    14.4    +      -       -      +
   1202B  GLY      3.0     7.8    +      -       -      +
   1204B  GLY*     1.3    78.4    -      -       -      +
   1206B  PHE*     1.3    86.8    +      -       +      +
   1209B  GLU*     4.1     6.3    -      -       -      +
   1264B  LEU*     4.4     5.8    -      -       +      -
   1298B  SER*     3.5     3.3    +      -       -      -
   1299B  PRO*     3.3    19.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE1206 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    736B  ILE*     3.5    25.4    -      -       +      -
    917B  PRO*     4.2     6.3    -      -       +      -
    921B  PHE*     3.6    24.2    -      +       +      -
   1202B  GLY*     2.9    26.9    +      -       -      +
   1203B  LEU      4.4     0.4    -      -       -      +
   1205B  LEU*     1.3    94.4    -      -       +      +
   1207B  THR*     1.3    65.8    +      -       +      +
   1264B  LEU*     4.6     1.6    -      -       +      -
   1265B  PHE*     3.8    33.2    -      +       -      -
   1267B  GLY      3.9     2.7    -      -       -      +
   1268B  ALA*     3.6    35.2    -      -       +      -
   1271B  PHE*     3.3    23.7    -      -       +      -
   1298B  SER*     3.4    15.9    -      -       -      -
   1299B  PRO*     3.4     3.5    -      -       -      +
   1300B  ALA      2.8    19.4    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR1207 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1171B  HIS*     4.5     8.1    -      -       -      -
   1203B  LEU*     2.6    30.4    +      -       +      +
   1204B  GLY      3.4     0.6    +      -       -      -
   1205B  LEU      3.6     0.2    +      -       -      -
   1206B  PHE*     1.3    91.2    -      -       +      +
   1208B  LEU*     1.3    81.5    +      -       -      +
   1270B  VAL*     4.1    15.5    -      -       +      -
   1271B  PHE*     4.4     6.7    -      -       -      +
   1274B  ILE*     3.8    23.8    -      -       +      -
   1299B  PRO*     3.8     5.8    -      -       -      +
   1300B  ALA*     3.3    23.9    -      -       +      +
   1301B  THR*     3.6    11.1    -      -       -      -
   1302B  PRO*     4.6     2.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU1208 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    425B  SER*     4.5    22.4    -      -       -      +
    426B  ARG*     4.2    14.8    -      -       +      -
   1171B  HIS*     4.4    14.1    -      -       +      -
   1173B  ASN*     6.0     1.1    -      -       -      +
   1203B  LEU*     4.8     3.8    -      -       +      +
   1204B  GLY*     3.0     9.3    +      -       -      +
   1207B  THR*     1.3   111.5    +      -       -      +
   1209B  GLU*     1.3    65.3    +      -       -      +
   1210B  GLU*     3.6     3.3    +      -       -      +
   1228B  LYS*     3.4    25.7    +      -       +      +
   1230B  PRO*     4.0    22.2    -      -       +      -
   1234B  SER*     3.6    28.0    -      -       -      +
   1299B  PRO*     4.3     0.4    -      -       -      +
   1301B  THR*     4.5    11.0    -      -       -      +
   1302B  PRO*     6.1     0.7    -      -       +      -
----------------------------------------------------------
 Back to top of page


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