Contacts of the helix formed by residues 1142 - 1168 (chain A) in PDB entry 1B0P


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 PRO1142 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1137A  LEU      3.3     1.3    -      -       -      +
   1138A  ASP*     3.3    29.3    -      -       -      +
   1139A  ARG      4.2     7.2    -      -       -      +
   1140A  SER      3.4     7.2    -      -       -      +
   1141A  PHE*     1.3    87.3    -      -       -      +
   1143A  GLU*     1.3    71.9    +      -       +      +
   1145A  ALA*     3.8     3.3    -      -       +      +
   1146A  LYS*     3.2    24.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU1143 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1141A  PHE      3.3     0.8    -      -       -      -
   1142A  PRO*     1.3    87.9    -      -       +      +
   1144A  ASP*     1.3    64.9    +      -       -      +
   1146A  LYS*     3.7     6.0    +      -       -      +
   1147A  ARG*     3.3    51.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP1144 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1016A  ALA*     5.5     0.5    -      -       -      +
   1019A  ARG*     3.0    35.9    +      -       -      +
   1137A  LEU*     4.3     3.8    -      -       +      -
   1141A  PHE*     3.1    22.2    +      -       +      +
   1143A  GLU*     1.3    79.0    -      -       -      +
   1145A  ALA*     1.3    63.9    +      -       -      +
   1147A  ARG*     3.2    25.2    +      -       -      +
   1148A  LEU*     3.0    30.0    +      -       +      +
   1182B  ALA*     5.4     7.6    -      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
   1134A  PHE      5.1     0.2    -      -       -      +
   1137A  LEU*     3.7    16.3    -      -       +      +
   1138A  ASP*     3.5    27.8    -      -       -      +
   1141A  PHE      2.8    15.9    +      -       -      +
   1142A  PRO      3.8     2.2    -      -       -      +
   1143A  GLU      3.4     0.2    -      -       -      -
   1144A  ASP*     1.3    75.6    -      -       -      +
   1146A  LYS*     1.3    64.8    +      -       -      +
   1148A  LEU*     3.2     3.5    +      -       -      +
   1149A  ARG*     2.8    50.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS1146 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1138A  ASP*     5.4     0.7    -      -       -      +
   1142A  PRO      3.2    15.4    +      -       -      +
   1143A  GLU*     3.8     6.7    -      -       -      +
   1145A  ALA*     1.3    80.1    -      -       -      +
   1147A  ARG*     1.3    57.4    +      -       +      +
   1149A  ARG*     3.9    17.8    -      -       -      +
   1150A  ALA*     3.0    28.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG1147 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1143A  GLU*     3.3    48.3    +      -       -      +
   1144A  ASP*     3.2    23.8    +      -       -      +
   1145A  ALA      3.2     0.4    -      -       -      -
   1146A  LYS*     1.3    78.4    -      -       +      +
   1148A  LEU*     1.3    55.1    +      -       +      +
   1150A  ALA*     3.0     9.0    +      -       -      +
   1151A  GLN*     2.7    35.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1148 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1007A  THR*     3.8    12.3    -      -       +      +
   1008A  GLY*     3.7    26.0    -      -       -      +
   1016A  ALA      4.0     1.6    -      -       -      +
   1017A  GLY*     4.4     0.2    -      -       -      -
   1018A  LYS      4.4     0.4    -      -       -      +
   1019A  ARG*     3.8    44.6    -      -       -      +
   1137A  LEU*     3.7    25.1    -      -       +      -
   1144A  ASP*     3.0    21.3    +      -       +      +
   1145A  ALA*     3.9     2.9    -      -       -      +
   1147A  ARG*     1.3    74.4    -      -       +      +
   1149A  ARG*     1.3    62.2    +      -       +      +
   1151A  GLN*     3.5    23.5    -      -       -      +
   1152A  VAL*     2.9    33.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG1149 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1008A  GLY*     6.4     0.7    -      -       -      -
   1125A  GLU*     2.9    40.1    +      -       -      +
   1128A  LEU*     3.8    36.4    -      -       +      +
   1129A  MET*     3.1    34.5    -      -       -      +
   1134A  PHE*     4.6    10.6    +      -       +      +
   1138A  ASP*     2.6    33.5    +      -       -      +
   1145A  ALA*     2.8    37.6    +      -       -      +
   1146A  LYS*     4.0    16.0    -      -       -      +
   1148A  LEU*     1.3    76.1    -      -       +      +
   1150A  ALA*     1.3    65.2    +      -       -      +
   1152A  VAL*     3.6     3.3    +      -       -      +
   1153A  ALA*     3.3    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA1150 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1146A  LYS*     3.0    20.2    +      -       +      +
   1147A  ARG*     3.0     9.1    +      -       -      +
   1149A  ARG*     1.3    78.4    -      -       -      +
   1151A  GLN*     1.3    55.7    +      -       -      +
   1153A  ALA*     3.3     6.9    +      -       -      +
   1154A  HIS*     3.0    27.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN1151 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1007A  THR*     3.7    12.2    +      -       +      +
   1019A  ARG      5.4     6.3    +      -       -      -
   1020A  THR*     6.2     0.2    -      -       -      +
   1021A  GLY      5.6     2.2    -      -       -      +
   1147A  ARG      2.7    15.5    +      -       -      +
   1148A  LEU*     3.5    27.3    -      -       -      +
   1149A  ARG      3.2     0.2    -      -       -      -
   1150A  ALA*     1.3    75.4    -      -       -      +
   1152A  VAL*     1.3    60.3    +      -       -      +
   1154A  HIS*     3.1     9.9    +      -       +      +
   1155A  GLU*     2.8    55.4    +      -       +      +
   1176B  ALA*     6.4     0.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL1152 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1006A  PRO*     5.1     5.2    -      -       +      -
   1007A  THR*     2.9    39.7    -      -       -      +
   1008A  GLY*     5.2     0.2    -      -       -      -
   1095A  TYR*     4.3    16.4    -      -       +      -
   1124A  VAL*     4.3     4.7    -      -       +      -
   1128A  LEU*     4.2    21.5    -      -       +      -
   1134A  PHE*     5.1     3.8    -      -       +      -
   1148A  LEU      2.9    18.0    +      -       -      +
   1149A  ARG*     3.9     5.8    -      -       -      +
   1151A  GLN*     1.3    75.6    -      -       -      +
   1153A  ALA*     1.3    63.0    +      -       -      +
   1155A  GLU*     3.6    13.2    -      -       -      +
   1156A  LEU*     3.1    34.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA1153 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1124A  VAL*     4.2    20.0    -      -       +      -
   1149A  ARG      3.3    11.7    +      -       -      +
   1150A  ALA*     3.7     9.9    -      -       -      +
   1151A  GLN      3.1     0.6    -      -       -      -
   1152A  VAL*     1.3    79.0    -      -       -      +
   1154A  HIS*     1.3    65.3    +      -       -      +
   1156A  LEU*     3.4    14.9    -      -       -      +
   1157A  ASP*     3.2    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS1154 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1150A  ALA      3.0    14.0    +      -       -      +
   1151A  GLN*     3.1    13.2    +      -       -      +
   1153A  ALA*     1.3    74.6    -      -       -      +
   1155A  GLU*     1.3    69.5    +      -       -      +
   1157A  ASP*     3.0    17.9    +      -       +      +
   1158A  VAL*     3.1    39.9    +      -       +      +
   1172B  PHE      4.7     1.0    +      -       -      -
   1174B  SER*     3.6    35.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU1155 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1006A  PRO*     6.0     0.3    -      -       -      +
   1007A  THR*     2.8    34.6    +      -       -      -
   1021A  GLY*     4.1    12.5    -      -       -      -
   1022A  LYS      5.0     2.1    +      -       -      -
   1151A  GLN*     2.8    42.0    +      -       +      +
   1152A  VAL*     3.6    11.4    -      -       -      +
   1153A  ALA      3.2     0.2    -      -       -      -
   1154A  HIS*     1.3    86.2    -      -       -      +
   1156A  LEU*     1.3    57.8    +      -       -      +
   1158A  VAL*     3.4     4.5    +      -       -      +
   1159A  ARG*     2.9    30.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1156 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1093A  SER      3.7    10.3    -      -       -      +
   1094A  GLY      3.4    16.5    -      -       -      +
   1095A  TYR*     4.1    18.8    -      -       +      +
   1120A  PRO*     3.7    26.6    -      -       +      +
   1124A  VAL*     3.5    36.3    -      -       +      -
   1152A  VAL*     3.1    19.4    +      -       +      +
   1153A  ALA*     3.4    15.5    -      -       -      +
   1155A  GLU*     1.3    79.9    -      -       -      +
   1157A  ASP*     1.3    61.9    +      -       +      +
   1159A  ARG*     3.8     7.0    -      -       -      +
   1160A  PHE*     3.0    28.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP1157 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1120A  PRO*     4.7    14.8    -      -       -      +
   1153A  ALA      3.2    13.4    +      -       -      +
   1154A  HIS*     3.0    14.8    +      -       +      +
   1156A  LEU*     1.3    80.8    -      -       +      +
   1158A  VAL*     1.3    66.9    +      -       +      +
   1160A  PHE*     3.6     3.8    +      -       -      +
   1161A  LYS*     3.2    50.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL1158 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1154A  HIS*     3.1    37.8    +      -       +      +
   1155A  GLU*     3.9     6.7    -      -       -      +
   1157A  ASP*     1.3    79.2    -      -       +      +
   1159A  ARG*     1.3    59.1    +      -       -      +
   1161A  LYS*     3.0    13.5    +      -       +      +
   1162A  GLU*     2.9    36.8    +      -       -      +
   1171B  ILE*     4.0    12.3    -      -       +      -
   1172B  PHE      3.1    36.6    -      -       -      +
   1173B  GLU*     4.0    11.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG1159 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1024A  ASP*     2.7    44.9    +      -       -      +
   1026A  ALA*     4.4     3.2    -      -       -      +
   1027A  ARG*     4.1     8.1    -      -       -      +
   1095A  TYR      5.3     2.0    +      -       -      -
   1097A  PRO*     3.8    29.9    -      -       +      +
   1099A  PHE*     3.9    22.2    -      -       -      -
   1155A  GLU      2.9    19.7    +      -       -      +
   1156A  LEU*     4.0     7.6    -      -       -      +
   1158A  VAL*     1.3    74.5    -      -       -      +
   1160A  PHE*     1.3    66.4    +      -       -      +
   1162A  GLU*     3.1    18.3    +      -       -      +
   1163A  LEU*     2.9    40.0    +      -       +      +
   1173B  GLU*     5.7     3.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE1160 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1094A  GLY*     5.4     4.0    -      -       -      +
   1097A  PRO*     3.9    28.2    -      -       +      +
   1115A  LEU*     3.3    25.8    -      -       +      -
   1117A  SER*     3.6     8.5    -      -       -      -
   1118A  LYS*     3.3    33.4    -      -       -      -
   1119A  ALA*     3.7    16.4    -      -       +      -
   1120A  PRO*     3.9    19.5    -      -       +      -
   1156A  LEU      3.0    20.0    +      -       -      +
   1157A  ASP      4.0     3.8    -      -       -      +
   1159A  ARG*     1.3    74.8    -      -       -      +
   1161A  LYS*     1.3    57.7    +      -       +      +
   1163A  LEU*     3.2     8.2    +      -       +      +
   1164A  GLU*     2.9    61.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS1161 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1157A  ASP*     3.2    34.3    +      -       -      +
   1158A  VAL*     3.0    15.6    +      -       +      +
   1160A  PHE*     1.3    77.8    -      -       +      +
   1162A  GLU*     1.3    58.4    +      -       -      +
   1164A  GLU*     3.5    18.6    +      -       -      +
   1165A  HIS*     3.0    24.8    +      -       -      +
   1171B  ILE*     3.8    33.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU1162 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1027A  ARG*     3.1    38.6    +      -       -      +
   1158A  VAL*     2.9    23.9    +      -       -      +
   1159A  ARG*     3.1    18.5    +      -       -      +
   1161A  LYS*     1.3    75.9    -      -       -      +
   1163A  LEU*     1.3    59.6    +      -       +      +
   1165A  HIS*     3.0    10.4    +      -       -      +
   1166A  MET*     2.9    32.5    +      -       +      +
   1171B  ILE*     3.6    23.8    -      -       +      +
   1173B  GLU*     3.6    26.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1163 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1027A  ARG*     3.9    28.0    -      -       -      +
   1030A  MET*     5.2     0.4    -      -       +      -
   1097A  PRO*     3.6    34.3    -      -       +      -
   1099A  PHE*     3.6    24.9    -      -       +      -
   1113A  PHE*     3.2    34.7    -      -       +      -
   1115A  LEU*     4.3    11.4    -      -       +      -
   1159A  ARG*     2.9    27.8    +      -       +      +
   1160A  PHE*     3.2    11.0    +      -       -      +
   1162A  GLU*     1.3    74.1    -      -       +      +
   1164A  GLU*     1.3    60.1    +      -       -      +
   1166A  MET*     3.2     8.0    +      -       -      -
   1167A  ALA*     2.9    24.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU1164 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1115A  LEU*     4.0     9.9    -      -       +      -
   1119A  ALA*     4.6     6.4    -      -       -      +
   1160A  PHE*     2.9    48.5    +      -       +      +
   1161A  LYS*     3.6    20.8    +      -       -      +
   1163A  LEU*     1.3    75.0    -      -       -      +
   1165A  HIS*     1.3    64.3    +      -       -      +
   1167A  ALA*     3.3     6.3    +      -       -      +
   1168A  ALA*     3.1    23.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS1165 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1161A  LYS      3.0    13.4    +      -       -      +
   1162A  GLU*     3.1    17.0    -      -       -      +
   1164A  GLU*     1.3    75.7    -      -       -      +
   1166A  MET*     1.3    59.3    +      -       +      +
   1168A  ALA*     3.2    15.6    +      -       -      +
   1169A  THR*     3.4    13.7    +      -       -      -
   1165B  HIS*     4.1    38.5    +      +       -      -
   1166B  MET*     6.2     0.2    -      -       -      -
   1168B  ALA      5.9     0.4    -      -       -      -
   1169B  THR*     3.6    34.6    +      -       -      -
   1170B  ASN*     5.2     3.6    +      -       -      -
   1171B  ILE*     3.7    24.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET1166 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1027A  ARG*     4.3    23.1    -      -       +      +
   1030A  MET*     4.0    17.7    -      -       +      -
   1101A  TYR*     4.4    10.1    -      -       +      -
   1111A  ASN*     3.0    17.3    +      -       -      +
   1113A  PHE*     3.7    37.2    -      -       +      +
   1162A  GLU*     2.9    18.3    +      -       +      +
   1163A  LEU*     3.3    28.7    -      -       -      +
   1165A  HIS*     1.3    77.6    -      -       +      +
   1167A  ALA*     1.3    57.2    +      -       -      +
   1169A  THR*     3.0    21.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA1167 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1111A  ASN*     2.9    18.8    -      -       -      +
   1113A  PHE*     3.5    23.7    -      -       +      +
   1115A  LEU*     4.6    14.4    -      -       +      +
   1163A  LEU      2.9    16.3    +      -       -      +
   1164A  GLU*     3.3     8.5    +      -       -      +
   1166A  MET*     1.3    77.9    -      -       -      +
   1168A  ALA*     1.3    56.8    +      -       -      +
   1169A  THR      4.6     0.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA1168 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1164A  GLU      3.1    15.2    +      -       -      +
   1165A  HIS*     3.2     7.5    +      -       -      +
   1167A  ALA*     1.3    75.7    -      -       -      +
   1169A  THR*     1.3    64.1    +      -       -      +
   1170A  ASN*     3.9     4.9    +      -       -      -
----------------------------------------------------------
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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