Contacts of the helix formed by residues 965 - 987 (chain A) in PDB entry 5B16


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 ASN 965 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    895A  LEU*     3.3    20.9    -      -       -      +
    896A  ALA*     3.4    20.5    +      -       -      +
    898A  THR      3.0    20.0    +      -       -      +
    899A  HIS*     4.8     6.1    +      -       -      -
    900A  PRO*     3.5    17.7    -      -       -      +
    964A  HIS*     1.3    71.7    -      -       -      +
    966A  GLU*     1.3    55.6    +      -       -      +
    967A  ARG      3.1     2.9    -      -       -      -
    968A  LEU*     3.2     6.7    +      -       -      +
    969A  GLU*     2.7    38.1    +      -       -      +
   1042A  ASN*     4.4     4.8    -      -       -      +
   1043A  CYS*     3.5    29.3    -      -       -      +
   1046A  ALA*     3.6    10.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 966 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    900A  PRO*     4.6    13.6    -      -       +      +
    961A  ARG*     3.4    37.1    +      -       -      +
    964A  HIS*     3.3    29.4    +      -       +      +
    965A  ASN*     1.3    82.2    +      -       -      +
    967A  ARG*     1.3    57.6    +      -       +      +
    969A  GLU*     3.7    19.5    -      -       -      +
    970A  PHE*     2.9    29.5    +      -       -      +
   1170A  HIS*     5.4     0.2    -      -       -      +
   1171A  GLU*     4.0    32.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 967 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    895A  LEU*     5.5     3.8    -      -       +      -
    961A  ARG      5.5     1.6    -      -       -      +
    962A  ILE*     4.6    26.2    +      -       -      +
    964A  HIS*     4.9     5.6    -      -       +      +
    965A  ASN      3.1     1.3    -      -       -      -
    966A  GLU*     1.3    78.0    -      -       +      +
    968A  LEU*     1.3    60.0    +      -       +      +
    970A  PHE*     3.0    10.6    +      -       -      +
    971A  LEU*     2.9    26.0    +      -       -      +
   1163A  PHE*     3.0    62.6    +      -       +      +
   1166A  PHE      3.4     5.1    +      -       -      -
   1167A  PRO*     2.7    39.6    +      -       -      +
   1168A  ASP*     4.7     0.6    -      -       -      +
   1169A  HIS      3.3    22.5    +      -       -      -
   1170A  HIS*     4.3    11.0    -      -       -      +
   1171A  GLU*     4.6     1.1    -      -       -      +
   1174A  LEU*     3.4    18.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 968 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    892A  LEU*     3.9    17.5    -      -       +      -
    895A  LEU*     3.8    22.2    -      -       +      -
    896A  ALA*     3.6    33.4    -      -       +      +
    965A  ASN*     3.2     6.5    +      -       -      +
    967A  ARG*     1.3    79.6    -      -       +      +
    969A  GLU*     1.3    57.0    +      -       -      +
    971A  LEU*     3.8     6.5    -      -       +      -
    972A  GLY      2.9    19.8    +      -       -      -
   1045A  GLN      3.2    10.9    -      -       -      +
   1046A  ALA*     3.4    18.8    -      -       +      +
   1049A  GLY*     3.9     5.1    -      -       -      -
   1050A  ALA*     3.9    27.4    -      -       +      +
   1053A  LEU*     4.5     3.6    -      -       +      -
   1163A  PHE*     3.5    28.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 969 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    965A  ASN*     2.7    19.2    +      -       -      +
    966A  GLU*     3.7    23.0    -      -       -      +
    968A  LEU*     1.3    76.3    -      -       -      +
    970A  PHE*     1.3    60.8    +      -       -      +
    973A  ASP*     2.9    31.9    +      -       -      +
   1042A  ASN*     3.0    54.4    +      -       +      +
   1045A  GLN*     3.5    17.8    +      -       -      +
   1046A  ALA*     3.8     8.9    -      -       +      +
   1171A  GLU*     6.1     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 970 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    966A  GLU      2.9    19.7    +      -       -      +
    967A  ARG*     3.0     6.7    +      -       -      +
    969A  GLU*     1.3    76.9    -      -       -      +
    971A  LEU*     1.3    61.9    +      -       -      +
    973A  ASP*     3.9    13.3    -      -       +      +
    974A  ALA*     4.0     2.1    +      -       -      +
   1159A  THR*     3.3    35.8    +      -       +      +
   1162A  LEU*     5.1     3.6    -      -       +      -
   1163A  PHE*     5.3     2.7    -      +       -      -
   1171A  GLU*     4.7    12.6    -      -       +      -
   1174A  LEU*     3.6    48.9    -      -       +      -
   1175A  THR*     3.8    24.7    -      -       -      -
   1178A  ARG*     3.5    47.2    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 971 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    967A  ARG      2.9    13.3    +      -       -      +
    968A  LEU*     3.9     9.6    -      -       +      +
    970A  PHE*     1.3    77.4    -      -       -      +
    972A  GLY*     1.3    60.0    +      -       -      +
    974A  ALA*     3.1     8.1    +      -       -      +
    975A  VAL*     2.9    34.6    +      -       +      +
   1049A  GLY      3.6    24.2    -      -       -      +
   1052A  TYR*     4.1    17.0    -      -       +      -
   1053A  LEU*     4.5    10.5    -      -       +      -
   1156A  LEU*     5.1     3.1    -      -       +      +
   1159A  THR*     3.7    22.0    -      -       +      +
   1160A  GLU*     3.9    26.7    -      -       +      +
   1163A  PHE*     4.2    30.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 972 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    968A  LEU      2.9    10.7    +      -       -      -
    969A  GLU      3.3     1.3    +      -       -      -
    971A  LEU*     1.3    74.7    -      -       -      +
    973A  ASP*     1.3    58.6    +      -       -      +
    974A  ALA      3.3     0.2    -      -       -      -
    975A  VAL*     3.6     4.9    -      -       -      -
    976A  VAL*     2.9    36.9    +      -       -      +
   1045A  GLN*     3.2    29.8    -      -       -      -
   1048A  ILE*     4.2     0.4    -      -       -      -
   1049A  GLY*     3.8    11.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 973 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    969A  GLU*     2.9    17.0    +      -       -      +
    970A  PHE*     3.9    10.1    -      -       +      +
    972A  GLY*     1.3    78.4    -      -       -      +
    974A  ALA*     1.3    57.6    +      -       -      +
    976A  VAL*     4.0     1.6    -      -       -      +
    977A  GLU*     2.9    44.8    +      -       -      +
   1004A  VAL*     5.1     4.9    -      -       -      +
   1045A  GLN*     2.9    30.2    +      -       -      +
   1155A  GLN*     5.3     5.1    +      -       -      +
   1178A  ARG*     5.9     2.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 974 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    970A  PHE      4.0     0.6    +      -       -      +
    971A  LEU      3.1     9.2    +      -       -      +
    973A  ASP*     1.3    76.5    -      -       -      +
    975A  VAL*     1.3    61.0    +      -       -      +
    977A  GLU*     3.6     6.4    -      -       -      +
    978A  PHE*     2.9    30.8    +      -       -      +
   1152A  SER      5.1     0.9    -      -       -      +
   1155A  GLN*     4.0    11.2    -      -       +      +
   1156A  LEU*     3.6    26.8    -      -       +      +
   1159A  THR*     3.5    31.9    -      -       +      +
   1178A  ARG*     4.9     1.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 975 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    971A  LEU*     2.9    25.7    +      -       +      +
    972A  GLY*     3.6    11.2    -      -       -      +
    973A  ASP      3.2     0.2    -      -       -      -
    974A  ALA*     1.3    74.2    -      -       -      +
    976A  VAL*     1.3    61.2    +      -       -      +
    978A  PHE*     3.1     4.4    +      -       -      +
    979A  LEU*     2.9    42.9    +      -       +      +
   1048A  ILE*     4.0    31.4    -      -       +      +
   1049A  GLY*     4.3     1.1    -      -       -      -
   1052A  TYR*     3.6    42.4    -      -       +      -
   1057A  LEU*     5.4     0.7    -      -       +      -
   1060A  ALA*     4.2     4.3    -      -       +      -
   1156A  LEU*     3.9    12.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 976 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    972A  GLY      2.9    23.3    +      -       -      +
    973A  ASP*     4.0     3.8    -      -       -      +
    975A  VAL*     1.3    74.1    -      -       -      +
    977A  GLU*     1.3    55.3    +      -       -      +
    979A  LEU*     3.8     5.9    -      -       -      +
    980A  THR*     2.5    41.8    +      -       +      +
   1004A  VAL*     4.4    20.9    -      -       +      -
   1009A  LEU*     4.6     9.9    -      -       +      -
   1044A  PHE*     4.6     5.2    -      -       +      -
   1045A  GLN*     4.5    13.5    -      -       +      +
   1048A  ILE*     3.7    30.1    -      -       +      -
   1064A  PHE*     4.0    27.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 977 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    973A  ASP*     2.9    28.8    +      -       -      +
    974A  ALA*     3.6     8.7    -      -       -      +
    976A  VAL*     1.3    78.2    -      -       -      +
    978A  PHE*     1.3    54.3    +      -       -      +
    980A  THR*     2.8    15.5    +      -       -      -
    981A  SER*     2.7    28.1    +      -       -      -
   1000A  ARG*     3.5    35.9    +      -       -      +
   1004A  VAL*     3.8    21.3    -      -       -      +
   1152A  SER*     3.5    11.2    -      -       -      +
   1155A  GLN*     3.8    21.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 978 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    974A  ALA      2.9    18.4    +      -       -      +
    975A  VAL      3.1     3.1    +      -       -      +
    977A  GLU*     1.3    75.2    -      -       -      +
    979A  LEU*     1.3    75.3    +      -       +      +
    981A  SER*     3.3     0.5    +      -       -      -
    982A  VAL*     2.9    54.3    +      -       +      +
   1057A  LEU*     3.9    25.4    -      -       +      -
   1061A  LYS*     4.9     3.6    -      -       -      -
   1149A  LEU*     5.0     1.1    -      -       +      -
   1152A  SER*     3.2    14.8    +      -       -      +
   1153A  ILE*     3.5    38.8    -      -       +      -
   1156A  LEU*     3.4    27.8    -      -       +      -
   1229A  TYR*     3.5    35.2    -      +       -      -
   1234A  LEU*     4.0     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 979 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    975A  VAL*     2.9    19.9    +      -       +      +
    976A  VAL*     3.8     3.6    -      -       -      +
    978A  PHE*     1.3    84.4    -      -       +      +
    980A  THR*     1.3    63.0    +      -       -      +
    982A  VAL*     3.9     2.3    -      -       -      +
    983A  HIS*     2.9    41.0    +      -       +      +
   1048A  ILE*     3.9    13.9    -      -       +      -
   1057A  LEU*     3.8    22.0    -      -       +      -
   1060A  ALA*     3.4    34.3    -      -       +      +
   1061A  LYS*     3.6    31.6    -      -       +      +
   1064A  PHE*     3.7    23.3    -      -       +      -
   1078A  TRP*     4.9     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 980 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    976A  VAL*     2.5    29.8    +      -       +      +
    977A  GLU*     2.8    17.5    +      -       -      -
    979A  LEU*     1.3    73.7    -      -       -      +
    981A  SER*     1.3    60.6    +      -       -      +
    983A  HIS*     4.2     0.2    -      -       -      +
    984A  LEU*     2.9    35.9    +      -       -      +
   1000A  ARG*     4.0    13.0    -      -       -      +
   1003A  ILE*     3.7    30.1    -      -       +      -
   1004A  VAL*     4.0     8.5    -      -       +      +
   1064A  PHE*     3.5    26.2    -      -       +      -
   1078A  TRP*     4.5     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 981 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    977A  GLU      2.7    25.2    +      -       -      -
    978A  PHE      3.6     1.6    -      -       -      -
    979A  LEU      3.3     0.2    -      -       -      -
    980A  THR*     1.3    77.0    -      -       -      +
    982A  VAL*     1.3    57.8    -      -       -      +
    984A  LEU      3.7     0.2    -      -       -      -
    985A  TYR*     2.9    31.6    +      -       -      +
   1000A  ARG*     3.7     8.2    +      -       -      +
   1148A  PHE*     3.3    40.1    -      -       -      -
   1149A  LEU*     4.3     5.8    -      -       -      -
   1152A  SER*     3.0    28.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 982 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    978A  PHE*     2.9    58.9    +      -       +      +
    979A  LEU*     3.9     3.4    -      -       -      +
    981A  SER*     1.3    70.3    -      -       -      +
    983A  HIS*     1.3    61.4    +      -       +      +
    985A  TYR*     3.0     3.7    +      -       -      +
    986A  TYR*     2.9    49.8    +      -       +      -
   1061A  LYS*     5.1     5.2    -      -       -      +
   1081A  TYR*     4.1    19.3    -      -       +      +
   1149A  LEU*     3.7    18.6    -      -       +      -
   1229A  TYR*     3.6    16.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 983 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    979A  LEU*     2.9    34.5    +      -       +      +
    982A  VAL*     1.3    77.5    -      -       +      +
    984A  LEU*     1.3    63.3    +      -       -      +
    987A  LEU*     3.1    35.9    +      -       +      +
   1061A  LYS*     4.2    32.0    +      -       +      +
   1064A  PHE*     5.5     0.2    -      +       -      -
   1078A  TRP*     2.8    73.7    +      +       +      -
   1079A  LEU*     4.3     6.7    -      -       +      -
   1081A  TYR*     3.3    33.0    -      +       -      +
----------------------------------------------------------
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Residues in contact with LEU 984 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    980A  THR*     2.9    22.6    +      -       -      +
    981A  SER*     4.1     3.1    -      -       -      +
    983A  HIS*     1.3    74.6    -      -       -      +
    985A  TYR*     1.3    60.2    +      -       -      +
    988A  PHE*     3.4    30.6    -      -       +      +
    996A  LEU*     3.7    25.9    -      -       +      +
    999A  TYR*     3.6    15.0    -      -       +      -
   1000A  ARG*     3.5    39.9    -      -       +      +
   1003A  ILE*     3.8    12.1    -      -       +      -
   1078A  TRP*     4.0    16.8    -      -       +      -
   1148A  PHE*     5.4     0.9    -      -       +      -
    735B  LEU*     3.8    32.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 985 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    981A  SER      2.9    19.3    +      -       -      +
    982A  VAL*     3.0     6.3    +      -       -      +
    984A  LEU*     1.3    78.4    -      -       -      +
    986A  TYR*     1.3    86.0    +      +       -      +
    987A  LEU      3.6     0.2    +      -       -      -
    988A  PHE      3.7     6.1    -      -       -      +
    989A  PRO*     4.1     1.4    -      -       -      +
    996A  LEU*     4.1    20.4    -      -       +      -
   1084A  HIS*     3.5    24.8    +      +       -      -
   1126A  ARG*     4.5     0.9    +      -       -      -
   1145A  ARG*     3.5    66.7    +      -       +      -
   1146A  MET*     3.6    13.5    -      -       +      +
   1148A  PHE*     4.7     1.1    -      +       +      -
   1149A  LEU*     3.8    25.4    -      -       +      -
   1230A  ILE*     3.3    35.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 986 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    982A  VAL*     2.9    41.0    +      -       +      +
    985A  TYR*     1.3    95.1    -      +       -      +
    987A  LEU*     1.3    61.0    +      -       -      +
    988A  PHE      3.2     3.7    +      -       -      -
    989A  PRO*     3.5    17.1    -      -       -      +
   1081A  TYR*     3.4    40.2    -      +       +      -
   1082A  PRO*     3.2    33.9    -      -       -      +
   1083A  LEU*     4.2     5.8    -      -       +      +
   1084A  HIS*     4.0    31.0    -      +       +      -
   1087A  GLN*     5.5     1.3    -      -       -      -
   1149A  LEU*     5.0     0.4    -      -       +      -
   1229A  TYR*     4.3    13.4    -      +       -      -
   1230A  ILE*     3.2    40.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 987 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    983A  HIS*     3.1    21.7    +      -       +      +
    986A  TYR*     1.3    76.2    -      -       -      +
    988A  PHE*     1.3    80.1    +      -       +      +
    989A  PRO*     3.6     5.4    -      -       -      +
   1077A  VAL*     3.2    33.4    -      -       +      +
   1078A  TRP*     3.7    33.0    -      -       +      +
   1081A  TYR*     3.8     8.1    -      -       +      -
   1082A  PRO*     3.6    24.2    -      -       +      -
    739B  MET*     3.6    24.9    -      -       +      -
    741B  ARG*     5.6     0.2    +      -       -      -
    742B  LEU*     3.4    22.6    -      -       +      +
----------------------------------------------------------
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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