Contacts of the helix formed by residues 1169 - 1193 (chain B) in PDB entry 4E70


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 ALA1169 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1165B  CYS      4.5     2.2    -      -       -      -
   1166B  SER      5.4     0.2    -      -       -      -
   1167B  GLU      3.8     3.8    +      -       -      -
   1168B  ASP*     1.3    73.2    +      -       -      +
   1170B  ASN*     1.3    59.1    +      -       -      +
   1172B  SER*     3.4     6.9    +      -       -      -
   1173B  GLN*     2.9    32.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN1170 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1124B  HIS*     4.4    13.5    +      -       -      -
   1168B  ASP*     3.3     8.8    +      -       -      +
   1169B  ALA*     1.3    77.9    -      -       -      +
   1171B  PHE*     1.3    64.9    +      -       -      +
   1173B  GLN*     3.3    11.7    +      -       -      +
   1174B  LEU*     3.0    46.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE1171 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1121B  CYS*     3.7    41.3    -      -       -      -
   1124B  HIS*     3.7    29.6    -      +       +      +
   1126B  HIS*     3.8    23.8    -      +       +      -
   1127B  LEU*     4.0    21.3    -      -       +      -
   1152B  PHE*     5.2     0.7    -      +       -      -
   1161B  VAL*     4.0    14.8    -      -       +      -
   1164B  VAL*     4.8     4.9    -      -       +      -
   1165B  CYS*     3.8    29.6    -      -       -      -
   1168B  ASP*     3.1    29.5    +      -       -      +
   1170B  ASN*     1.3    80.2    -      -       -      +
   1172B  SER*     1.3    62.3    +      -       -      +
   1174B  LEU*     3.3     7.8    +      -       +      +
   1175B  PHE*     3.1    24.1    +      +       -      +
   1329B  PHE*     5.9     0.2    -      +       -      -
----------------------------------------------------------
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Residues in contact with SER1172 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1165B  CYS*     3.4    46.5    +      -       -      +
   1168B  ASP      2.9     9.4    +      -       -      -
   1169B  ALA*     3.6     6.7    -      -       -      -
   1171B  PHE*     1.3    78.8    -      -       -      +
   1173B  GLN*     1.3    61.9    +      -       -      +
   1175B  PHE*     3.3     4.0    +      -       -      +
   1176B  SER*     3.0    31.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN1173 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1169B  ALA      2.9    18.5    +      -       -      +
   1170B  ASN*     3.3    10.4    +      -       -      +
   1172B  SER*     1.3    73.4    -      -       -      +
   1174B  LEU*     1.3    60.7    +      -       +      +
   1176B  SER*     3.3     6.5    +      -       -      -
   1177B  GLU*     2.8    65.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU1174 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1117B  SER*     3.5    38.1    -      -       -      +
   1120B  PHE*     3.8    39.0    -      -       +      +
   1121B  CYS*     3.9    13.8    -      -       +      +
   1124B  HIS*     4.7     6.5    -      -       +      -
   1170B  ASN*     3.0    42.2    +      -       -      +
   1171B  PHE*     3.5    11.4    -      -       -      +
   1173B  GLN*     1.3    77.8    -      -       +      +
   1175B  PHE*     1.3    56.9    +      -       -      +
   1177B  GLU*     3.4     4.7    +      -       -      +
   1178B  GLY*     2.9    26.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE1175 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1118B  LEU*     5.0     1.6    -      -       +      -
   1121B  CYS*     3.9    16.5    -      -       -      -
   1161B  VAL*     4.7     7.6    -      -       +      -
   1165B  CYS*     4.4    17.9    -      -       -      -
   1171B  PHE*     3.1    17.9    +      +       +      +
   1172B  SER*     3.6     9.9    -      -       -      +
   1173B  GLN      3.3     0.2    -      -       -      -
   1174B  LEU*     1.3    75.5    -      -       -      +
   1176B  SER*     1.3    64.7    +      -       -      +
   1178B  GLY*     3.1     2.6    +      -       -      -
   1179B  MET*     3.0    55.3    +      -       +      +
   1272B  ASP*     6.0     0.4    -      -       -      -
   1329B  PHE*     3.6    37.9    -      +       -      -
   1330B  LEU*     5.2     3.8    -      -       +      -
   1402B  N7I      4.0    25.4    -      +       +      -
----------------------------------------------------------
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Residues in contact with SER1176 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1172B  SER*     3.0    22.0    +      -       -      -
   1173B  GLN*     3.7     6.5    -      -       -      -
   1175B  PHE*     1.3    76.3    -      -       -      +
   1177B  GLU*     1.3    62.9    +      -       -      +
   1179B  MET*     3.3     7.4    +      -       -      +
   1180B  ALA*     3.1    23.8    +      -       -      +
   1211B  THR*     6.5     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU1177 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1114B  ASN      5.6     0.7    -      -       -      +
   1117B  SER*     2.7    35.5    +      -       -      +
   1173B  GLN*     2.8    59.9    +      -       +      +
   1174B  LEU*     4.3     5.4    -      -       -      +
   1176B  SER*     1.3    73.9    -      -       -      +
   1178B  GLY*     1.3    58.2    +      -       -      +
   1180B  ALA*     3.4     7.2    +      -       -      +
   1181B  GLY*     3.0    26.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY1178 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1114B  ASN      6.0     1.8    -      -       -      -
   1115B  ALA*     6.5     0.2    -      -       -      -
   1117B  SER*     3.9     1.1    -      -       -      -
   1118B  LEU*     3.9    34.3    -      -       -      +
   1174B  LEU      2.9    16.0    +      -       -      -
   1175B  PHE      3.1     4.0    +      -       -      -
   1177B  GLU*     1.3    77.8    -      -       -      +
   1179B  MET*     1.3    66.9    +      -       -      +
   1181B  GLY*     3.5     1.0    +      -       -      -
   1182B  ASP*     3.2    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET1179 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1118B  LEU*     3.7    26.5    -      -       +      -
   1175B  PHE*     3.0    48.6    +      -       +      +
   1176B  SER*     3.3     6.7    +      -       -      +
   1178B  GLY*     1.3    77.2    -      -       -      +
   1180B  ALA*     1.3    57.4    +      -       -      +
   1182B  ASP*     3.2     4.8    +      -       -      +
   1183B  SER*     2.9    34.3    +      -       -      +
   1267B  LYS*     4.0     2.6    +      -       -      +
   1268B  TRP*     3.8    30.5    -      -       +      +
   1402B  N7I      3.8    24.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA1180 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1112B  PRO      5.3     0.2    -      -       -      -
   1176B  SER      3.1    16.6    +      -       -      +
   1177B  GLU*     3.7     7.6    -      -       -      +
   1179B  MET*     1.3    77.1    -      -       -      +
   1181B  GLY*     1.3    63.1    +      -       -      +
   1183B  SER*     3.2     5.7    +      -       -      -
   1184B  TRP*     3.0    11.6    +      -       -      +
   1211B  THR*     4.4    15.7    -      -       +      +
   1213B  ASN*     2.9    33.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY1181 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  GLN*     4.6     1.6    -      -       -      +
   1112B  PRO      3.8    20.2    -      -       -      -
   1113B  TYR*     3.9    16.0    -      -       -      +
   1114B  ASN      4.6     9.4    -      -       -      -
   1177B  GLU      3.0    15.9    +      -       -      -
   1178B  GLY*     3.5     1.8    +      -       -      -
   1179B  MET      3.3     0.2    -      -       -      -
   1180B  ALA*     1.3    76.6    -      -       -      +
   1182B  ASP*     1.3    61.4    +      -       -      +
   1184B  TRP*     3.3    16.3    +      -       -      +
   1185B  LEU*     3.6     4.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP1182 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  LEU*     4.4     0.2    -      -       -      +
     13A  GLN*     2.9    29.4    +      -       -      +
     17A  TRP*     3.7     5.1    -      -       +      -
   1118B  LEU*     5.7     3.4    -      -       +      -
   1178B  GLY      3.2    14.8    +      -       -      +
   1179B  MET      3.2     7.2    +      -       -      +
   1181B  GLY*     1.3    75.2    -      -       -      +
   1183B  SER*     1.3    58.3    +      -       -      +
   1185B  LEU*     3.2     4.3    +      -       -      +
   1186B  PHE*     2.8    25.9    +      -       -      +
   1267B  LYS*     2.8    25.6    +      -       -      -
   1268B  TRP*     3.5    18.2    -      -       +      -
   1361B  ARG*     2.8    40.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER1183 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1179B  MET*     2.9    16.2    +      -       -      +
   1180B  ALA*     3.2     7.8    +      -       -      -
   1182B  ASP*     1.3    75.8    -      -       -      +
   1184B  TRP*     1.3    54.0    +      -       -      +
   1186B  PHE*     4.4     1.8    -      -       -      +
   1187B  SER*     2.8    39.5    +      -       -      -
   1213B  ASN*     3.8    15.9    -      -       -      +
   1214B  THR*     3.4    20.1    +      -       -      -
   1267B  LYS*     2.8    30.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP1184 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1A  MET*     3.9    26.9    -      -       +      -
   1112B  PRO*     3.5    44.6    -      -       +      +
   1113B  TYR*     3.5    30.1    -      +       +      -
   1180B  ALA      3.0    12.3    +      -       -      +
   1181B  GLY      3.3    12.1    -      -       -      +
   1182B  ASP      3.1     0.2    -      -       -      -
   1183B  SER*     1.3    76.9    -      -       -      +
   1185B  LEU*     1.3    72.6    +      -       +      +
   1187B  SER*     3.2     9.5    +      -       -      -
   1188B  ARG*     2.9    74.9    +      -       -      +
   1213B  ASN*     4.0    19.0    -      -       -      +
   1241B  GLN*     5.7     3.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU1185 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  ALA*     3.9    21.0    -      -       -      +
      9A  LEU*     3.9    39.0    -      -       +      -
     10A  LEU*     4.0    11.4    -      -       +      +
     13A  GLN*     3.7    33.9    -      -       +      +
   1106B  LEU*     4.1     6.1    -      -       +      -
   1113B  TYR*     3.5    25.1    -      -       +      -
   1181B  GLY      3.6     2.2    +      -       -      +
   1182B  ASP      3.2     6.3    +      -       -      +
   1184B  TRP*     1.3    98.9    -      -       +      +
   1186B  PHE*     1.3    65.1    +      -       -      +
   1188B  ARG*     3.2     5.2    +      -       -      +
   1189B  ALA*     3.1    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE1186 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  LEU*     3.9    19.0    -      -       +      +
   1182B  ASP*     2.8    30.1    +      -       -      +
   1183B  SER      4.3     0.7    -      -       -      +
   1185B  LEU*     1.3    73.6    -      -       -      +
   1187B  SER*     1.3    60.3    +      -       -      +
   1189B  ALA*     3.2     3.1    +      -       -      +
   1190B  LEU*     2.8    43.7    +      -       +      -
   1214B  THR*     6.0     1.6    -      -       +      -
   1267B  LYS*     4.2    19.5    -      -       +      -
   1301B  ALA*     3.6    34.3    -      -       +      -
   1357B  VAL*     3.8    29.4    -      -       +      -
   1358B  GLY      4.0     2.5    -      -       -      -
   1361B  ARG*     3.6    51.4    -      -       +      -
   1362B  VAL      4.6     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER1187 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1183B  SER      2.8    23.0    +      -       -      -
   1184B  TRP      3.2     7.4    +      -       -      -
   1186B  PHE*     1.3    80.7    -      -       -      +
   1188B  ARG*     1.3    59.9    +      -       -      +
   1190B  LEU*     3.2    10.3    +      -       -      +
   1191B  VAL*     3.0    36.2    +      -       -      +
   1213B  ASN      3.9     1.2    +      -       -      -
   1214B  THR*     3.9    25.1    +      -       -      -
   1217B  VAL*     3.3    31.5    -      -       -      +
   1218B  ILE*     5.7     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG1188 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1A  MET*     5.1     9.0    +      -       -      +
      3A  ALA*     4.9     4.9    -      -       -      +
      6A  ALA*     3.8    21.1    -      -       +      -
   1184B  TRP*     2.9    83.3    +      -       -      +
   1185B  LEU      3.2     8.3    +      -       -      +
   1187B  SER*     1.3    82.5    +      -       -      +
   1189B  ALA*     1.3    59.8    +      -       -      +
   1191B  VAL*     3.6     7.0    -      -       +      +
   1192B  SER*     3.5    21.1    +      -       -      -
   1216B  LYS*     6.3     0.2    -      -       -      +
   1217B  VAL*     3.3    36.5    -      -       +      +
   1220B  GLU*     4.8     7.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA1189 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3A  ALA      5.4     0.2    -      -       -      -
      6A  ALA*     4.4     1.5    -      -       -      +
      7A  VAL*     3.8    32.3    -      -       +      +
     10A  LEU*     3.5    31.6    -      -       +      -
   1185B  LEU      3.1     9.4    +      -       -      +
   1186B  PHE      3.6     3.6    -      -       -      +
   1188B  ARG*     1.3    77.4    -      -       -      +
   1190B  LEU*     1.3    57.9    +      -       -      +
   1192B  SER*     3.2     1.6    +      -       -      -
   1193B  LYS*     2.8    34.3    +      -       -      +
   1357B  VAL*     3.8     8.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU1190 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1186B  PHE*     2.8    43.5    +      -       +      +
   1187B  SER*     3.2     6.5    +      -       -      +
   1189B  ALA*     1.3    72.5    -      -       -      +
   1191B  VAL*     1.3    59.5    +      -       +      +
   1194B  CYS*     2.9    47.3    +      -       +      +
   1198B  PHE*     3.9    22.6    -      -       +      -
   1214B  THR*     4.8    17.5    -      -       +      -
   1218B  ILE*     4.9     6.1    -      -       +      -
   1265B  LEU*     4.9    14.1    -      -       +      -
   1267B  LYS*     6.1     0.4    -      -       +      -
   1301B  ALA*     5.0     2.0    -      -       +      -
   1357B  VAL*     3.8    26.2    -      -       +      +
   1363B  LEU*     4.2    18.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL1191 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1187B  SER      3.0    20.4    +      -       -      +
   1188B  ARG*     3.6     9.0    -      -       -      +
   1190B  LEU*     1.3    78.2    -      -       +      +
   1192B  SER*     1.3    62.1    +      -       -      +
   1195B  ARG*     3.5    24.3    +      -       -      +
   1198B  PHE*     4.2    11.0    -      -       +      -
   1217B  VAL*     4.0    17.9    -      -       +      -
   1218B  ILE*     4.1    23.3    -      -       +      -
   1221B  THR*     3.5    25.6    -      -       +      +
   1222B  PHE*     3.6    28.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER1192 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3A  ALA*     3.3    33.4    -      -       -      +
      7A  VAL*     5.2     3.1    -      -       -      +
   1188B  ARG      3.5    11.2    +      -       -      -
   1189B  ALA*     3.2     5.1    +      -       -      -
   1190B  LEU      3.1     0.6    -      -       -      -
   1191B  VAL*     1.3    80.1    -      -       -      +
   1193B  LYS*     1.3    67.7    +      -       -      +
   1194B  CYS      3.2     2.3    +      -       -      -
   1195B  ARG*     3.6    13.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS1193 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7A  VAL*     3.9    36.3    -      -       +      +
   1189B  ALA      2.8    22.3    +      -       -      +
   1192B  SER*     1.3    76.5    -      -       -      +
   1194B  CYS*     1.3    63.9    +      -       -      +
   1195B  ARG      3.9     0.7    +      -       -      -
   1355B  THR*     3.9    12.6    -      -       -      +
   1356B  PRO      3.8    18.6    -      -       -      +
   1357B  VAL*     3.7    22.4    -      -       -      +
----------------------------------------------------------
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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