Contacts of the helix formed by residues 1187 - 1213 (chain A) in PDB entry 4IGI


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 THR1187 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1164A  ILE*     3.7     9.0    -      -       -      -
   1185A  ILE*     3.4    16.0    -      -       -      +
   1186A  PRO*     1.3    88.3    -      -       +      +
   1188A  PHE*     1.3    63.4    +      -       -      +
   1189A  ARG*     3.3    12.7    +      -       +      +
   1190A  GLU*     2.3    56.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE1188 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1036A  GLY      4.4     9.0    -      -       -      -
   1037A  VAL*     4.2    23.8    -      -       +      -
   1039A  SER*     5.5     2.7    -      -       -      -
   1040A  GLY*     3.7    39.9    -      -       -      -
   1043A  LEU*     3.8    27.7    -      -       +      +
   1044A  LEU*     4.6     6.5    -      -       +      -
   1138A  ALA*     3.8    25.6    -      -       +      -
   1164A  ILE*     3.7    36.3    -      -       +      -
   1187A  THR*     1.3    74.2    -      -       -      +
   1189A  ARG*     1.3    61.2    -      -       -      +
   1191A  LEU*     3.0    32.1    +      -       +      +
   1192A  GLY      4.6     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG1189 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1043A  LEU*     4.0    14.7    -      -       +      +
   1187A  THR*     3.0    13.3    +      -       -      +
   1188A  PHE*     1.3    79.2    -      -       -      +
   1190A  GLU*     1.3    74.4    +      -       +      +
   1191A  LEU      3.6     0.2    +      -       -      -
   1192A  GLY*     4.3     4.7    +      -       -      -
   1193A  THR*     5.2     2.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU1190 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1185A  ILE*     3.9    17.6    -      -       +      +
   1186A  PRO*     3.3    22.3    -      -       +      +
   1187A  THR*     2.3    50.3    +      -       -      +
   1188A  PHE      3.1     1.2    -      -       -      -
   1189A  ARG*     1.3   101.7    +      -       +      +
   1191A  LEU*     1.3    64.2    +      -       -      +
   1192A  GLY      3.2     3.4    -      -       -      -
   1193A  THR*     2.7    41.8    +      -       +      +
   1194A  ILE      4.0     0.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU1191 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1043A  LEU*     4.1     5.6    -      -       +      +
   1044A  LEU*     3.9    31.6    -      -       +      +
   1047A  PHE*     3.5    38.0    -      -       +      -
   1136A  LEU*     3.9    20.4    -      -       +      -
   1162A  ILE*     4.2     2.0    -      -       +      -
   1164A  ILE*     4.2    11.7    -      -       +      -
   1185A  ILE*     3.4    27.3    -      -       +      +
   1188A  PHE*     3.0    21.4    +      -       +      +
   1190A  GLU*     1.3    77.9    -      -       -      +
   1192A  GLY*     1.3    63.3    +      -       -      +
   1193A  THR      3.1     0.9    +      -       -      -
   1194A  ILE*     3.1    34.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY1192 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1047A  PHE*     4.7     2.4    -      -       -      +
   1050A  ARG*     4.5    32.6    +      -       -      -
   1188A  PHE      4.6     0.4    +      -       -      -
   1189A  ARG      4.3     5.0    +      -       -      -
   1190A  GLU      3.2     1.2    -      -       -      -
   1191A  LEU*     1.3    78.8    -      -       -      +
   1193A  THR*     1.3    62.3    +      -       -      +
   1194A  ILE      3.2     1.2    +      -       -      -
   1195A  GLN*     3.2    16.9    +      -       -      +
   1196A  GLN      4.9     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR1193 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1185A  ILE*     5.0     1.4    -      -       -      +
   1189A  ARG      5.2     1.3    -      -       -      +
   1190A  GLU*     2.7    38.4    +      -       +      +
   1192A  GLY*     1.3    75.7    -      -       -      +
   1194A  ILE*     1.3    67.1    +      -       -      +
   1195A  GLN      3.5     0.4    -      -       -      -
   1196A  GLN*     5.0     3.4    +      -       -      +
   1197A  VAL*     5.4     1.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE1194 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1047A  PHE*     3.9     4.3    -      -       +      -
   1162A  ILE*     3.7    33.9    -      -       +      -
   1183A  VAL*     3.7    29.8    -      -       +      -
   1185A  ILE*     3.8    24.0    -      -       +      -
   1191A  LEU*     3.1    26.2    -      -       +      +
   1193A  THR*     1.3    84.8    +      -       -      +
   1195A  GLN*     1.3    68.9    +      -       -      +
   1196A  GLN      3.3     2.6    +      -       -      -
   1197A  VAL*     3.4    17.9    -      -       +      +
   1198A  ILE*     3.1    23.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN1195 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1047A  PHE*     3.7    16.4    -      -       +      -
   1050A  ARG*     3.4    55.4    +      -       +      +
   1051A  VAL*     3.9     7.9    -      -       +      +
   1054A  SER*     4.3     3.6    +      -       -      -
   1191A  LEU      3.8     1.6    +      -       -      -
   1192A  GLY      3.2    15.5    +      -       -      +
   1193A  THR      3.5     0.4    -      -       -      -
   1194A  ILE*     1.3    79.4    -      -       -      +
   1196A  GLN*     1.3    84.2    +      -       -      +
   1198A  ILE*     3.1     4.3    +      -       -      +
   1199A  SER*     2.5    48.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN1196 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1054A  SER*     5.8     1.0    -      -       -      -
   1192A  GLY      4.9     0.4    +      -       -      -
   1193A  THR      5.0     3.0    +      -       -      +
   1194A  ILE      3.3     0.8    -      -       -      -
   1195A  GLN*     1.3   100.3    +      -       -      +
   1197A  VAL*     1.3    58.2    +      -       +      +
   1199A  SER*     3.2    10.4    +      -       -      -
   1200A  GLU*     2.8    66.8    +      -       -      +
   1203A  ILE*     5.6     4.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL1197 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1183A  VAL*     5.4     5.8    -      -       +      -
   1193A  THR      5.6     1.1    +      -       -      +
   1194A  ILE*     3.4    30.0    -      -       +      +
   1196A  GLN*     1.3    78.8    -      -       +      +
   1198A  ILE*     1.3    67.0    +      -       +      +
   1200A  GLU*     3.4    20.5    -      -       -      +
   1201A  ARG*     2.9    29.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE1198 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1047A  PHE*     4.1    11.4    -      -       +      -
   1051A  VAL*     4.1    17.0    -      -       +      -
   1134A  ILE*     4.0    28.5    -      -       +      -
   1160A  ILE*     3.8    24.0    -      -       +      -
   1162A  ILE*     3.8    26.9    -      -       +      -
   1181A  PHE      5.2     0.4    -      -       -      +
   1183A  VAL*     4.1    17.3    -      -       +      -
   1194A  ILE*     3.1    17.8    +      -       +      +
   1195A  GLN      3.1     7.7    +      -       -      +
   1197A  VAL*     1.3    78.1    -      -       +      +
   1199A  SER*     1.3    64.3    +      -       -      +
   1201A  ARG*     3.2     5.8    +      -       +      +
   1202A  VAL*     3.0    23.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER1199 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1051A  VAL*     4.0    11.4    -      -       -      -
   1054A  SER*     2.9    29.0    +      -       -      -
   1055A  LEU*     5.5     1.3    -      -       -      +
   1195A  GLN*     2.5    37.0    +      -       -      -
   1196A  GLN*     3.5    14.4    -      -       -      -
   1198A  ILE*     1.3    77.8    -      -       -      +
   1200A  GLU*     1.3    61.3    +      -       -      +
   1202A  VAL*     3.2     9.7    +      -       -      +
   1203A  ILE*     3.1    30.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU1200 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1196A  GLN*     2.8    48.9    +      -       -      +
   1197A  VAL*     3.4    28.5    -      -       -      +
   1199A  SER*     1.3    72.5    -      -       -      +
   1201A  ARG*     1.3    57.2    +      -       -      +
   1203A  ILE*     3.2    13.8    +      -       +      +
   1204A  GLN*     2.9    29.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG1201 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1160A  ILE*     3.7    29.2    -      -       +      -
   1180A  ASP*     3.8    32.7    +      -       -      -
   1181A  PHE*     3.4    42.8    +      -       +      +
   1197A  VAL      2.9    17.3    +      -       -      +
   1198A  ILE*     3.6     9.6    -      -       +      +
   1200A  GLU*     1.3    75.7    -      -       -      +
   1202A  VAL*     1.3    64.0    +      -       -      +
   1204A  GLN*     2.7    39.9    +      -       -      +
   1205A  LEU*     3.0    37.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL1202 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1025A  LYS*     3.1    41.9    +      -       +      +
   1027A  VAL*     4.3    10.1    -      -       +      -
   1051A  VAL*     5.0     5.6    -      -       +      -
   1055A  LEU*     3.7    27.8    -      -       +      -
   1132A  LEU*     3.9    19.9    -      -       +      +
   1134A  ILE*     4.2    24.7    -      -       +      -
   1160A  ILE*     4.8     7.0    -      -       +      -
   1198A  ILE*     3.0    17.4    +      -       +      +
   1199A  SER*     3.2     9.4    +      -       -      +
   1201A  ARG*     1.3    76.6    -      -       -      +
   1203A  ILE*     1.3    58.9    +      -       +      +
   1205A  LEU*     3.4     7.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE1203 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1025A  LYS*     3.7    16.4    +      -       -      +
   1054A  SER*     5.8     5.6    -      -       -      +
   1055A  LEU*     6.0     3.4    -      -       +      -
   1196A  GLN*     5.6     3.6    -      -       -      +
   1199A  SER*     3.1    20.0    +      -       -      +
   1200A  GLU*     3.5    16.8    -      -       +      +
   1201A  ARG      3.2     0.2    -      -       -      -
   1202A  VAL*     1.3    76.2    -      -       +      +
   1204A  GLN*     1.3    66.0    +      -       -      +
   1205A  LEU      3.2     0.9    +      -       -      -
   1206A  ASN*     3.9    10.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN1204 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1181A  PHE*     4.8     4.2    -      -       -      -
   1200A  GLU      2.9    13.8    +      -       -      +
   1201A  ARG*     2.7    47.1    +      -       -      +
   1203A  ILE*     1.3    78.5    -      -       -      +
   1205A  LEU*     1.3    69.2    -      -       +      +
   1206A  ASN*     2.9    11.5    +      -       -      +
   1209A  GLU*     3.0    52.0    +      -       +      +
   1213A  LEU*     5.5     4.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1205 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1025A  LYS*     3.4    13.7    +      -       -      -
   1130A  PRO*     3.7    16.3    -      -       -      +
   1132A  LEU*     4.0    20.4    -      -       +      +
   1158A  VAL*     4.0    14.1    -      -       +      -
   1160A  ILE*     4.4     8.3    -      -       +      -
   1181A  PHE*     3.8    33.2    -      -       +      -
   1201A  ARG*     3.0    36.6    +      -       +      +
   1202A  VAL      3.4     3.7    +      -       -      +
   1203A  ILE      3.1     1.6    -      -       -      -
   1204A  GLN*     1.3    89.4    -      -       +      +
   1206A  ASN*     1.3    62.9    +      -       -      +
   1209A  GLU*     4.4     4.0    -      -       +      -
   1210A  LEU*     4.1    12.1    -      -       +      -
   1213A  LEU*     3.9    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN1206 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1024A  GLU      5.9     0.4    -      -       -      -
   1025A  LYS*     3.8    15.7    -      -       -      +
   1130A  PRO*     3.9     6.5    -      -       -      -
   1203A  ILE      4.2     7.2    +      -       -      +
   1204A  GLN      2.9    15.1    +      -       -      -
   1205A  LEU*     1.3    75.3    -      -       -      +
   1207A  ARG*     1.3    65.6    +      -       -      +
   1208A  GLU*     3.1    16.4    +      -       -      +
   1209A  GLU*     2.8    34.4    +      -       -      +
   1210A  LEU*     3.0    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG1207 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1024A  GLU*     3.1    21.9    +      -       -      -
   1127A  GLU*     3.2    23.8    +      -       -      +
   1128A  GLY*     3.1    24.8    -      -       -      +
   1129A  VAL*     3.7    22.4    -      -       -      +
   1130A  PRO*     3.8    17.0    -      -       +      +
   1206A  ASN*     1.3    74.4    -      -       -      +
   1208A  GLU*     1.3    75.7    +      -       -      +
   1210A  LEU*     3.5     4.6    +      -       -      +
   1211A  SER*     3.1    24.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU1208 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1206A  ASN*     3.1    17.4    +      -       -      +
   1207A  ARG*     1.3    84.3    +      -       -      +
   1209A  GLU*     1.3    63.9    +      -       -      +
   1211A  SER*     3.0    22.9    -      -       -      -
   1212A  SER*     3.6     7.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU1209 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1204A  GLN*     3.0    60.7    +      -       +      +
   1205A  LEU*     4.4     7.4    -      -       +      -
   1206A  ASN*     2.8    15.5    +      -       -      +
   1208A  GLU*     1.3    73.9    -      -       -      +
   1210A  LEU*     1.3    64.3    +      -       -      +
   1212A  SER*     2.9    22.2    +      -       -      -
   1213A  LEU*     3.4    16.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU1210 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1130A  PRO*     3.6    34.5    -      -       +      -
   1132A  LEU*     4.3     0.9    -      -       +      -
   1158A  VAL*     3.8    35.2    -      -       +      -
   1177A  PHE*     4.4     7.9    -      -       +      -
   1205A  LEU*     3.9    20.6    -      -       +      +
   1206A  ASN      3.0    18.3    +      -       -      +
   1207A  ARG*     3.9     5.2    -      -       -      +
   1209A  GLU*     1.3    76.6    -      -       -      +
   1211A  SER*     1.3    61.9    +      -       -      +
   1213A  LEU*     3.0    47.4    +      -       +      +
   1214A  LYS*     5.0     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER1211 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1207A  ARG      3.1    15.7    +      -       -      -
   1208A  GLU*     3.0    17.9    -      -       -      -
   1210A  LEU*     1.3    77.2    -      -       -      +
   1212A  SER*     1.3    56.1    +      -       -      +
   1214A  LYS*     3.2    18.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER1212 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1208A  GLU      4.0     6.1    +      -       -      -
   1209A  GLU*     2.9    20.1    +      -       -      -
   1211A  SER*     1.3    78.4    -      -       -      +
   1213A  LEU*     1.3    59.7    +      -       -      +
   1214A  LYS*     4.1     8.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU1213 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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   1177A  PHE*     3.4    32.3    -      -       +      -
   1178A  ILE*     3.8    30.5    -      -       +      -
   1181A  PHE*     3.5    25.6    -      -       +      -
   1204A  GLN*     5.5     3.4    -      -       -      +
   1205A  LEU*     3.9     7.4    -      -       +      -
   1209A  GLU*     3.4    18.1    +      -       +      +
   1210A  LEU*     3.0    32.8    +      -       +      +
   1212A  SER*     1.3    80.1    -      -       -      +
   1214A  LYS*     1.3    71.7    +      -       -      +
   1215A  PRO*     4.6     0.7    -      -       -      +
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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) +   -    +    +   +   +    +    -
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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