Contacts of the helix formed by residues 1135 - 1161 (chain E) in PDB entry 6BAA


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 HIS1135 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1130E  ASN      4.2     7.6    -      -       -      -
   1131E  THR*     2.9    12.3    +      -       +      +
   1134E  GLN*     1.3    98.1    +      -       +      +
   1136E  ILE*     1.3    67.0    +      -       -      +
   1137E  PRO      3.5     1.1    -      -       -      -
   1138E  SER*     3.5     4.6    +      -       -      -
   1139E  THR*     2.7    32.3    +      -       -      +
   1304E  ASP*     5.8     0.2    -      -       -      +
   1308E  GLN*     3.4    29.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE1136 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1131E  THR*     3.2    12.1    +      -       +      +
   1132E  ILE*     3.8    24.9    -      -       +      +
   1135E  HIS*     1.3    76.7    -      -       -      +
   1137E  PRO*     1.4    66.9    -      -       +      +
   1139E  THR*     3.9     0.5    -      -       -      -
   1140E  LEU*     2.9    51.1    +      -       +      +
   1305E  MET*     3.7    15.4    -      -       +      +
   1308E  GLN*     3.4    36.3    -      -       -      +
   1309E  LEU*     4.1     9.0    -      -       +      -
   1312E  VAL*     3.8    21.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO1137 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1086E  VAL*     4.6    24.5    -      -       +      +
   1087E  GLU*     5.5     3.1    -      -       -      -
   1090E  GLY*     4.5    17.3    -      -       -      -
   1132E  ILE      3.3    21.5    -      -       -      +
   1133E  ASP*     4.8     3.6    -      -       -      +
   1134E  GLN      4.3     5.4    -      -       -      +
   1135E  HIS      3.7     6.7    -      -       -      +
   1136E  ILE*     1.4    92.6    -      -       +      +
   1138E  SER*     1.3    59.2    +      -       -      +
   1140E  LEU*     3.4     6.6    +      -       +      +
   1141E  GLU*     3.0    27.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER1138 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    540E  THR*     5.5    11.4    -      -       -      -
    544E  ILE*     5.4    15.3    -      -       -      +
   1134E  GLN      4.2     9.7    +      -       -      -
   1135E  HIS*     3.5     9.5    +      -       -      -
   1137E  PRO*     1.3    79.8    -      -       -      +
   1139E  THR*     1.3    63.8    +      -       -      +
   1141E  GLU*     3.3    10.0    +      -       -      +
   1142E  CYS*     2.9    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR1139 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1135E  HIS*     2.7    26.3    +      -       -      +
   1137E  PRO      3.2     0.6    -      -       -      -
   1138E  SER*     1.3    78.4    +      -       -      +
   1140E  LEU*     1.3    60.6    +      -       -      +
   1142E  CYS*     3.2    10.8    -      -       -      -
   1143E  LEU*     2.9    30.1    +      -       -      +
   1301E  ASN*     3.9    24.7    -      -       +      +
   1304E  ASP*     3.7    22.0    +      -       -      +
   1305E  MET*     3.7    21.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU1140 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1136E  ILE*     2.9    38.2    +      -       +      +
   1137E  PRO*     3.7     6.3    -      -       +      +
   1139E  THR*     1.3    77.2    -      -       -      +
   1141E  GLU*     1.3    57.0    +      -       -      +
   1143E  LEU*     3.8    12.7    -      -       +      +
   1144E  SER*     2.9    31.1    +      -       -      -
   1305E  MET*     3.8    25.8    -      -       +      -
   1309E  LEU*     5.4    11.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU1141 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    544E  ILE*     3.1    44.8    -      -       +      +
    548E  THR*     5.7     0.2    -      -       -      +
   1082E  THR*     4.0     9.0    -      -       -      +
   1083E  SER*     3.3    33.0    +      -       -      +
   1086E  VAL*     4.0    16.9    -      -       +      +
   1137E  PRO      3.0    13.3    +      -       -      +
   1138E  SER*     3.3    11.5    +      -       -      +
   1140E  LEU*     1.3    78.3    -      -       -      +
   1142E  CYS*     1.3    57.1    +      -       -      +
   1144E  SER*     2.6    21.7    +      -       -      +
   1145E  ARG*     2.9    19.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with CYS1142 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    544E  ILE*     6.0     2.0    -      -       +      -
   1138E  SER      2.9    11.2    +      -       -      +
   1139E  THR*     3.2    24.5    -      -       -      -
   1141E  GLU*     1.3    77.4    -      -       -      +
   1143E  LEU*     1.3    61.1    -      -       -      +
   1145E  ARG*     3.4    32.1    +      -       -      +
   1146E  SER*     2.9    35.4    +      -       -      +
   1301E  ASN*     3.2    28.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU1143 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1139E  THR      2.9    19.4    +      -       -      +
   1140E  LEU*     3.8    12.8    -      -       +      +
   1142E  CYS*     1.3    77.8    -      -       -      +
   1144E  SER*     1.3    52.9    +      -       -      +
   1146E  SER*     3.4     1.5    +      -       -      -
   1147E  THR*     2.3    45.3    +      -       -      +
   1298E  MET*     3.4    35.9    -      -       +      +
   1301E  ASN*     3.7    31.9    -      -       +      +
   1302E  LEU*     3.9    18.4    -      -       +      +
   1305E  MET*     4.5    13.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER1144 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1020E  GLN*     5.9     3.6    -      -       -      +
   1140E  LEU      2.9    16.0    +      -       -      -
   1141E  GLU*     2.6    27.2    +      -       -      +
   1143E  LEU*     1.3    76.3    -      -       -      +
   1145E  ARG*     1.3    56.6    +      -       -      +
   1147E  THR*     3.3     7.1    +      -       -      -
   1148E  LEU*     2.9    41.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG1145 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    544E  ILE*     3.8    31.9    -      -       -      +
    547E  ASN*     5.8     5.9    +      -       -      +
    548E  THR*     3.8    24.8    -      -       -      +
   1141E  GLU*     2.9    22.2    +      -       +      +
   1142E  CYS*     3.4    40.0    +      -       -      +
   1144E  SER*     1.3    78.3    +      -       -      +
   1146E  SER*     1.3    62.0    +      -       -      +
   1148E  LEU*     3.3     6.4    +      -       -      +
   1149E  LEU*     2.9    50.8    +      -       +      +
   1297E  TRP*     5.2    12.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER1146 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1142E  CYS*     2.9    20.1    +      -       -      +
   1143E  LEU*     3.9     2.2    -      -       -      -
   1145E  ARG*     1.3    77.5    +      -       -      +
   1147E  THR*     1.3    60.1    +      -       -      +
   1149E  LEU*     3.7     9.6    -      -       -      +
   1150E  CYS*     3.0    30.1    +      -       -      +
   1294E  TYR*     4.4     7.0    -      -       -      +
   1297E  TRP*     3.4    40.4    -      -       -      +
   1298E  MET*     3.7    22.4    -      -       -      +
   1301E  ASN*     4.6     1.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR1147 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1143E  LEU*     2.3    38.8    +      -       -      +
   1144E  SER*     3.4     8.8    -      -       -      -
   1146E  SER*     1.3    75.7    -      -       -      +
   1148E  LEU*     1.3    63.7    +      -       +      +
   1150E  CYS*     3.3     3.5    +      -       -      +
   1151E  VAL*     3.0    39.5    +      -       +      +
   1298E  MET*     3.6    18.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1148 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1020E  GLN*     4.0    36.6    -      -       +      +
   1021E  LEU*     4.6     6.1    -      -       +      +
   1024E  HIS*     4.4    15.7    -      -       +      -
   1144E  SER*     2.9    25.7    +      -       -      +
   1145E  ARG*     4.0     4.7    -      -       -      +
   1147E  THR*     1.3    80.3    -      -       +      +
   1149E  LEU*     1.3    57.2    +      -       -      +
   1151E  VAL*     3.7    16.0    -      -       +      +
   1152E  SER*     2.7    34.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU1149 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1024E  HIS*     6.2     4.0    -      -       +      -
   1027E  LEU*     6.0     6.5    -      -       +      -
   1145E  ARG*     2.9    44.3    +      -       +      +
   1146E  SER*     3.7     8.3    -      -       -      +
   1148E  LEU*     1.3    75.5    -      -       +      +
   1150E  CYS*     1.3    59.3    +      -       -      +
   1152E  SER*     3.3     9.4    +      -       -      +
   1153E  ALA*     2.9    27.4    +      -       -      +
   1287E  TYR*     6.5     0.7    -      -       +      -
   1294E  TYR*     3.5    46.9    -      -       +      +
   1297E  TRP*     5.5     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS1150 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1146E  SER      3.0    17.2    +      -       -      +
   1147E  THR      3.9     2.7    -      -       -      +
   1149E  LEU*     1.3    73.5    -      -       -      +
   1151E  VAL*     1.3    60.9    +      -       +      +
   1153E  ALA*     3.7     2.3    -      -       -      +
   1154E  LEU*     2.9    44.3    +      -       -      +
   1291E  VAL*     3.8    25.1    -      -       -      -
   1294E  TYR*     3.9    13.6    -      -       +      -
   1295E  LEU*     4.5     7.9    -      -       -      -
   1298E  MET*     3.7    28.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL1151 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1147E  THR*     3.0    30.0    +      -       +      +
   1148E  LEU*     3.7    16.6    -      -       +      +
   1150E  CYS*     1.3    77.4    -      -       +      +
   1152E  SER*     1.3    54.8    +      -       -      +
   1154E  LEU*     3.8     6.4    -      -       +      +
   1155E  THR*     2.5    46.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER1152 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1024E  HIS*     4.4    19.2    +      -       -      +
   1028E  VAL*     5.2    13.1    -      -       -      +
   1148E  LEU*     2.7    22.5    +      -       -      +
   1149E  LEU*     3.5    12.6    -      -       -      +
   1150E  CYS      3.3     0.2    -      -       -      -
   1151E  VAL*     1.3    78.4    -      -       -      +
   1153E  ALA*     1.3    56.2    +      -       -      +
   1155E  THR*     3.3     5.8    +      -       -      -
   1156E  VAL*     2.9    37.2    +      -       -      +
   1287E  TYR*     4.7     9.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA1153 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1149E  LEU      2.9    17.4    +      -       -      +
   1150E  CYS*     3.7     7.4    -      -       -      +
   1151E  VAL      3.3     0.2    -      -       -      -
   1152E  SER*     1.3    76.3    -      -       -      +
   1154E  LEU*     1.3    58.9    +      -       +      +
   1156E  VAL*     3.4     1.7    +      -       -      +
   1157E  ILE*     3.0    37.7    +      -       +      +
   1287E  TYR*     3.7    41.0    -      -       +      +
   1291E  VAL*     4.8     8.7    -      -       +      -
   1294E  TYR*     4.6     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU1154 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1150E  CYS*     2.9    36.0    +      -       -      +
   1151E  VAL*     3.9     5.8    -      -       +      +
   1153E  ALA*     1.3    74.6    -      -       -      +
   1155E  THR*     1.3    57.4    +      -       -      +
   1157E  ILE*     4.0     7.9    -      -       +      +
   1158E  SER*     2.9    32.7    +      -       -      -
   1164E  PHE*     4.7     8.4    -      -       +      -
   1168E  LEU*     3.8    41.8    -      -       +      +
   1259E  VAL*     6.3     3.1    -      -       +      -
   1291E  VAL*     4.9    12.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR1155 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1151E  VAL*     2.5    34.0    +      -       -      +
   1152E  SER*     3.6     6.3    -      -       -      -
   1154E  LEU*     1.3    76.5    -      -       -      +
   1156E  VAL*     1.3    60.2    +      -       +      +
   1158E  SER*     2.6    21.0    +      -       -      +
   1159E  TYR*     2.9    18.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL1156 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1028E  VAL*     5.1    17.3    -      -       +      +
   1031E  ASP*     6.5     0.2    -      -       +      -
   1152E  SER      2.9    22.3    +      -       -      +
   1155E  THR*     1.3    78.4    -      -       +      +
   1157E  ILE*     1.3    59.8    +      -       -      +
   1159E  TYR*     3.1    10.0    +      -       +      +
   1160E  VAL*     2.9    36.0    +      -       +      +
   1283E  LEU*     4.4    26.9    -      -       +      +
   1284E  GLY*     5.1     0.2    -      -       -      -
   1287E  TYR*     3.6    33.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE1157 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1153E  ALA*     3.0    23.1    +      -       +      +
   1154E  LEU*     4.0     7.9    -      -       +      +
   1156E  VAL*     1.3    75.9    -      -       +      +
   1158E  SER*     1.3    55.6    +      -       -      +
   1160E  VAL*     3.4     4.7    +      -       -      +
   1161E  THR*     2.7    43.5    +      -       -      +
   1164E  PHE*     3.6    36.1    -      -       +      -
   1259E  VAL*     5.8     3.6    -      -       +      +
   1263E  ALA*     4.4    12.1    -      -       +      -
   1284E  GLY*     3.4    35.9    -      -       -      +
   1287E  TYR*     4.0     7.2    -      -       +      +
   1288E  ALA*     3.6    24.7    -      -       +      +
   1291E  VAL*     5.8     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER1158 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1154E  LEU      2.9    16.2    +      -       -      -
   1155E  THR*     2.6    26.3    +      -       -      +
   1157E  ILE*     1.3    79.8    -      -       -      +
   1159E  TYR*     1.3    57.9    +      -       -      +
   1161E  THR      3.1    23.2    -      -       -      +
   1162E  PRO*     3.3    10.2    -      -       -      +
   1164E  PHE*     5.0     2.2    -      -       -      -
   1165E  LEU*     3.7    32.1    -      -       -      -
   1168E  LEU*     5.7     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with TYR1159 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1155E  THR*     2.9    20.6    +      -       +      +
   1156E  VAL*     3.1    12.5    +      -       +      +
   1158E  SER*     1.3    76.3    +      -       -      +
   1160E  VAL*     1.3    66.4    +      -       +      +
   1162E  PRO*     4.9     3.1    -      -       -      +
   1280E  LEU*     4.4    26.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL1160 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1156E  VAL*     2.9    30.2    +      -       +      +
   1157E  ILE*     3.9     4.5    -      -       -      +
   1159E  TYR*     1.3    82.5    -      -       +      +
   1161E  THR*     1.3    71.3    +      -       +      +
   1162E  PRO*     3.3     9.9    -      -       -      +
   1267E  SER*     4.0    10.5    -      -       -      +
   1270E  ASN*     5.3     1.9    +      -       -      -
   1280E  LEU*     3.3    66.1    -      -       +      +
   1281E  VAL*     4.3     3.1    -      -       +      +
   1283E  LEU*     5.4     0.7    -      -       +      -
   1284E  GLY*     4.9     4.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR1161 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1157E  ILE*     2.7    31.1    +      -       -      +
   1158E  SER*     3.1    11.8    -      -       -      +
   1160E  VAL*     1.3    76.5    -      -       +      +
   1162E  PRO*     1.3    68.7    -      -       -      +
   1163E  VAL      3.4     0.9    -      -       -      -
   1164E  PHE*     3.2    26.3    -      -       -      +
   1263E  ALA*     4.3     4.2    -      -       +      +
   1266E  THR*     3.8    22.7    -      -       +      -
   1267E  SER*     3.0    43.5    -      -       -      +
   1270E  ASN*     4.6     2.9    -      -       -      +
----------------------------------------------------------
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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