Contacts of the helix formed by residues 1131 - 1153 (chain A) in PDB entry 1FP7


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 GLY1131 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1128A  HIS*     2.7    17.4    +      -       -      +
   1129A  PHE      3.4     0.4    +      -       -      -
   1130A  THR*     1.3    79.3    -      -       -      +
   1132A  ASP*     1.3    64.0    +      -       -      +
   1133A  ILE      3.5     1.8    -      -       -      -
   1134A  HIS*     3.7    18.8    +      -       -      +
   1135A  ALA*     3.5    19.9    +      -       -      +
   1254A  ALA*     5.3     0.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP1132 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    282A    K      1.8    32.4    -      -       -      -
   1042A  LYS*     2.4    32.6    +      -       -      -
   1098A  GLU*     3.5     4.1    +      -       -      +
   1128A  HIS      4.6     0.6    +      -       -      -
   1130A  THR*     3.9     1.8    -      -       -      -
   1131A  GLY*     1.3    78.1    -      -       -      +
   1133A  ILE*     1.3    64.8    +      -       +      +
   1134A  HIS      3.2     0.2    +      -       -      -
   1135A  ALA*     3.3     4.3    +      -       -      +
   1136A  VAL*     3.1    28.1    +      -       -      +
   1206A  MET*     5.2     1.6    -      -       +      -
   1209A  LEU*     5.2     7.2    -      -       +      -
   1254A  ALA*     3.6    16.8    -      -       +      +
   1258A  ASN*     2.7    18.9    +      -       -      -
   1271A  HIS*     3.9    15.3    -      -       -      -
   1272A  GLY*     4.8     1.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE1133 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1098A  GLU*     3.5    30.3    +      -       +      +
   1099A  PRO      3.4    25.8    -      -       -      +
   1100A  SER*     4.1     5.8    -      -       -      -
   1101A  LEU      4.6     1.1    -      -       -      +
   1127A  LEU      5.6     3.4    -      -       -      +
   1131A  GLY      3.5     0.4    -      -       -      -
   1132A  ASP*     1.3    76.8    -      -       +      +
   1134A  HIS*     1.3    57.4    +      -       +      +
   1135A  ALA      3.5     0.2    -      -       -      -
   1136A  VAL*     3.7     6.5    -      -       -      +
   1137A  THR*     2.6    40.7    +      -       -      +
   1171A  ASP*     3.1    36.1    -      -       +      +
   1200A  SER*     3.8    14.8    -      -       -      -
   1201A  VAL*     4.5     7.6    -      -       +      -
   1206A  MET*     4.5    15.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS1134 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1101A  LEU*     5.3    13.2    -      -       +      -
   1127A  LEU      5.6     0.9    -      -       -      -
   1128A  HIS*     2.8    43.5    +      +       +      +
   1131A  GLY*     4.0    20.0    -      -       -      +
   1132A  ASP      3.2     0.8    -      -       -      -
   1133A  ILE*     1.3    81.5    -      -       +      +
   1135A  ALA*     1.3    62.9    +      -       -      +
   1136A  VAL      3.1     1.3    -      -       -      -
   1137A  THR*     3.0     8.5    +      -       -      -
   1138A  TYR*     2.8    45.9    +      +       +      -
   1171A  ASP*     5.6     6.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA1135 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1131A  GLY      3.5    10.9    +      -       -      +
   1132A  ASP      3.3     8.4    +      -       -      +
   1134A  HIS*     1.3    78.4    -      -       -      +
   1136A  VAL*     1.3    54.2    +      -       -      +
   1138A  TYR*     5.0     2.7    -      -       -      -
   1139A  ALA*     2.7    38.6    +      -       -      +
   1250A  LEU*     3.2    26.7    -      -       -      +
   1251A  MET*     3.9    11.9    -      -       -      -
   1254A  ALA*     4.0    11.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL1136 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1132A  ASP      3.1    18.7    +      -       -      +
   1133A  ILE      3.7     4.3    -      -       -      +
   1134A  HIS      3.1     0.4    -      -       -      -
   1135A  ALA*     1.3    77.7    -      -       -      +
   1137A  THR*     1.3    60.7    +      -       -      +
   1140A  HIS*     3.1    25.5    +      -       -      +
   1169A  VAL*     4.9     0.3    -      -       -      +
   1200A  SER*     4.8     4.5    -      -       -      +
   1203A  SER*     4.3     8.1    -      -       -      +
   1205A  VAL*     3.3    21.8    -      -       +      +
   1206A  MET*     3.3    46.2    -      -       +      +
   1209A  LEU*     4.3     7.9    -      -       +      -
   1251A  MET*     3.9    26.5    -      -       +      -
   1254A  ALA*     5.4     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR1137 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1133A  ILE*     2.6    25.0    +      -       -      +
   1134A  HIS*     3.0    12.4    +      -       -      -
   1136A  VAL*     1.3    78.1    -      -       -      +
   1138A  TYR*     1.3    68.3    +      -       +      +
   1140A  HIS*     3.9     1.2    -      -       -      +
   1141A  ASN*     3.2    32.5    +      -       -      +
   1169A  VAL*     3.7    23.0    -      -       -      +
   1170A  ILE*     4.5    14.4    -      -       +      -
   1171A  ASP*     4.4     4.3    -      -       -      +
   1200A  SER*     2.5    26.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR1138 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1134A  HIS*     2.8    35.8    +      +       +      +
   1135A  ALA*     4.3     2.9    -      -       -      +
   1137A  THR*     1.3    85.6    -      -       +      +
   1139A  ALA*     1.3    67.9    +      -       -      +
   1140A  HIS      2.9     1.6    -      -       -      -
   1141A  ASN*     4.1    10.5    -      -       +      +
   1142A  LEU*     2.8    27.1    +      -       -      +
   1250A  LEU*     4.7    13.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA1139 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1135A  ALA      2.7    24.1    +      -       -      +
   1136A  VAL      4.1     3.4    -      -       -      +
   1138A  TYR*     1.3    74.9    -      -       -      +
   1140A  HIS*     1.3    62.9    +      -       -      +
   1142A  LEU*     3.4    12.0    +      -       -      +
   1143A  LEU      3.6     1.4    +      -       -      -
   1205A  VAL*     4.3     7.2    -      -       +      -
   1222A  PHE*     5.0     0.2    -      -       +      -
   1247A  MET*     3.6    31.2    -      -       +      +
   1250A  LEU*     4.0    19.6    -      -       +      +
   1251A  MET*     3.9    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS1140 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1136A  VAL      3.1    17.5    +      -       -      +
   1137A  THR      3.9     3.1    -      -       -      +
   1139A  ALA*     1.3    75.9    -      -       -      +
   1141A  ASN*     1.3    62.4    +      -       -      +
   1142A  LEU      3.0     4.0    -      -       -      -
   1143A  LEU*     2.8    28.5    +      -       -      +
   1144A  ALA      3.4     2.3    +      -       -      -
   1166A  TRP*     3.2    38.1    -      +       -      -
   1167A  ARG      3.1    30.5    +      -       -      -
   1168A  ARG*     3.8    15.4    +      -       -      -
   1169A  VAL*     3.5    14.7    -      -       +      +
   1203A  SER*     2.5    41.0    -      -       -      +
   1204A  GLU      5.0     0.2    +      -       -      -
   1205A  VAL*     3.9     6.5    -      -       +      -
   1247A  MET*     4.9     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN1141 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1137A  THR*     3.2    26.3    +      -       -      +
   1138A  TYR*     3.2    12.7    +      -       +      +
   1140A  HIS*     1.3    80.0    +      -       -      +
   1142A  LEU*     1.3    61.5    +      -       -      +
   1143A  LEU      3.2     0.2    -      -       -      -
   1144A  ALA*     3.5     7.6    +      -       -      +
   1145A  ALA*     3.2    20.6    +      -       -      +
   1168A  ARG*     2.9    19.8    +      -       +      +
   1169A  VAL*     2.8    47.2    +      -       -      +
   1170A  ILE*     5.9     0.6    -      -       -      +
   1197A  PHE*     4.7     3.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU1142 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1138A  TYR*     2.8    22.9    +      -       -      +
   1139A  ALA      3.5     6.3    -      -       -      +
   1140A  HIS      2.9     0.2    +      -       -      -
   1141A  ASN*     1.3    70.5    -      -       -      +
   1143A  LEU*     1.3    59.7    +      -       -      +
   1145A  ALA*     3.3    11.2    -      -       +      +
   1146A  MET*     2.8    47.0    +      -       +      +
   1246A  SER*     3.9    28.3    -      -       -      +
   1247A  MET*     4.9     4.3    -      -       +      +
   1250A  LEU*     4.1    16.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU1143 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1139A  ALA      3.6     5.8    +      -       -      +
   1140A  HIS      2.8    10.9    +      -       -      +
   1142A  LEU*     1.3    77.0    -      -       -      +
   1144A  ALA*     1.3    70.9    +      -       -      +
   1146A  MET*     3.0     6.6    +      -       +      +
   1147A  VAL*     2.7    20.4    +      -       -      +
   1166A  TRP*     3.4    18.2    -      -       +      +
   1225A  ILE*     3.6    31.0    -      -       +      -
   1227A  VAL*     4.0    15.5    -      -       +      -
   1238A  ALA*     3.8    24.7    -      -       +      -
   1241A  LEU*     4.5     8.5    -      -       +      -
   1243A  ALA*     3.6    29.4    -      -       +      -
   1247A  MET*     4.1    16.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA1144 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1140A  HIS      3.4     1.0    +      -       -      -
   1141A  ASN*     3.5    11.7    -      -       -      +
   1142A  LEU      3.3     0.2    -      -       -      -
   1143A  LEU*     1.3    83.2    -      -       -      +
   1145A  ALA*     1.3    55.7    +      -       -      +
   1147A  VAL*     2.8    21.7    +      -       -      +
   1148A  ASP*     3.0    13.9    +      -       -      +
   1166A  TRP*     3.4    14.8    -      -       -      +
   1167A  ARG      4.0    16.6    -      -       -      +
   1168A  ARG*     3.4    40.2    -      -       +      +
   1193A  ARG*     5.1     1.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA1145 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1141A  ASN      3.2     9.7    +      -       -      +
   1142A  LEU*     3.3    20.6    -      -       +      +
   1144A  ALA*     1.3    80.0    -      -       -      +
   1146A  MET*     1.3    57.5    +      -       -      +
   1148A  ASP*     3.3     7.9    +      -       -      +
   1149A  ASN*     2.9    28.9    +      -       -      +
   1168A  ARG*     4.3     7.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET1146 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1142A  LEU*     2.8    47.0    +      -       +      +
   1143A  LEU*     3.0    10.3    +      -       +      +
   1145A  ALA*     1.3    70.4    -      -       -      +
   1147A  VAL*     1.3    67.5    +      -       -      +
   1149A  ASN*     3.8     7.7    -      -       -      +
   1150A  HIS*     3.3    19.4    +      -       -      +
   1241A  LEU*     3.6    33.8    -      -       +      +
   1242A  GLU*     4.3     4.3    -      -       +      +
   1243A  ALA*     3.3    30.1    -      -       +      +
   1246A  SER*     5.2     6.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL1147 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1143A  LEU      2.7    18.7    +      -       -      +
   1144A  ALA*     2.8    13.6    +      -       -      +
   1146A  MET*     1.3    73.1    -      -       -      +
   1148A  ASP*     1.3    66.3    +      -       -      +
   1150A  HIS*     3.2    15.6    +      -       -      +
   1151A  LEU*     3.6     8.9    +      -       +      +
   1159A  ILE*     5.2     8.0    -      -       +      +
   1164A  ILE*     3.3    38.1    -      -       +      -
   1166A  TRP*     4.8     4.5    -      -       +      +
   1193A  ARG*     4.3     4.9    -      -       -      +
   1227A  VAL*     3.6    31.4    -      -       +      -
   1241A  LEU*     3.5    26.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP1148 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1144A  ALA      3.0     7.1    +      -       -      +
   1145A  ALA*     3.5     9.9    -      -       -      +
   1147A  VAL*     1.3    77.4    -      -       -      +
   1149A  ASN*     1.3    63.2    +      -       -      +
   1151A  LEU*     3.1    17.8    +      -       -      +
   1152A  GLN*     3.1    19.9    +      -       -      +
   1168A  ARG*     2.8    25.3    +      -       -      -
   1182A  ILE*     4.2    14.1    -      -       -      +
   1183A  GLY*     5.8     0.2    -      -       -      -
   1191A  VAL*     4.6     7.6    +      -       -      +
   1193A  ARG*     2.7    41.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN1149 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1145A  ALA      2.9    21.3    +      -       -      +
   1146A  MET*     3.8     9.0    -      -       -      +
   1147A  VAL      3.3     0.2    -      -       -      -
   1148A  ASP*     1.3    71.9    -      -       -      +
   1150A  HIS*     1.3    66.9    +      -       -      +
   1152A  GLN*     2.8    13.4    +      -       -      +
   1153A  GLN*     2.7    61.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS1150 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1146A  MET      3.3     2.4    +      -       -      +
   1147A  VAL      3.2    12.2    +      -       -      +
   1149A  ASN*     1.3    78.6    +      -       -      +
   1151A  LEU*     1.3    65.9    +      -       -      +
   1153A  GLN*     3.0    17.4    +      -       +      +
   1155A  ASN*     3.0    23.4    +      -       -      -
   1156A  VAL*     3.1    29.8    +      -       +      +
   1157A  LEU*     3.0    52.0    +      -       +      +
   1159A  ILE*     3.8    17.1    -      -       +      +
   1241A  LEU*     3.7    23.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU1151 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1147A  VAL      3.8     8.3    -      -       -      +
   1148A  ASP*     3.1    28.2    +      -       -      +
   1150A  HIS*     1.3    74.6    -      -       -      +
   1152A  GLN*     1.3    68.8    +      -       -      +
   1153A  GLN      2.6     2.4    +      -       -      -
   1154A  GLY*     2.6    16.3    +      -       -      -
   1155A  ASN*     3.0    42.4    +      -       +      +
   1159A  ILE*     4.3    21.1    -      -       +      -
   1161A  PRO*     4.3    17.3    -      -       +      -
   1164A  ILE*     4.7     8.7    -      -       +      -
   1191A  VAL*     3.8    32.7    -      -       +      +
   1193A  ARG*     4.4    12.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN1152 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1148A  ASP      3.1     8.8    +      -       -      +
   1149A  ASN*     2.8    20.1    +      -       -      +
   1151A  LEU*     1.3    78.9    -      -       -      +
   1153A  GLN*     1.3    68.9    +      -       -      +
   1154A  GLY      3.3     2.9    +      -       -      -
   1187A  LYS      3.5    19.9    +      -       -      +
   1188A  ALA*     4.9     4.6    -      -       -      +
   1189A  ASN      5.3     0.2    -      -       -      -
   1190A  GLY*     3.0    38.4    +      -       -      +
   1191A  VAL*     4.3     6.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN1153 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1149A  ASN*     2.7    51.6    +      -       -      +
   1150A  HIS*     3.4    13.6    -      -       +      +
   1151A  LEU      2.6     3.8    +      -       -      -
   1152A  GLN*     1.3    86.4    +      -       -      +
   1154A  GLY*     1.3    57.1    +      -       -      +
   1155A  ASN      3.7     0.5    +      -       -      -
   1156A  VAL*     4.7     8.8    -      -       -      +
----------------------------------------------------------
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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