Contacts of the helix formed by residues 91 - 120 (chain A) in PDB entry 1GWG


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 THR 91 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  PHE*     4.1     2.9    -      -       -      -
     90A  GLY*     1.3    76.6    -      -       -      -
     92A  THR*     1.3    64.9    +      -       -      +
     93A  LEU*     3.4     9.0    +      -       -      +
     94A  ASP*     3.0    30.9    +      -       -      +
     95A  ALA*     2.9    23.9    +      -       -      +
    163A  GLU*     3.8    11.0    -      -       -      +
   1172A  IOD      3.8    16.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  PHE*     3.8    10.5    -      -       -      -
     44A  LEU*     3.5    12.3    -      -       -      +
     47A  VAL*     3.7    27.4    -      -       +      +
     51A  PHE*     5.6     0.2    -      -       -      -
     91A  THR*     1.3    71.6    -      -       -      +
     93A  LEU*     1.3    57.1    +      -       -      +
     95A  ALA*     3.3     2.6    +      -       +      +
     96A  MET*     2.9    33.3    +      -       +      +
    151A  ILE*     3.6    24.5    -      -       +      -
    163A  GLU*     2.6    43.2    +      -       -      +
    166A  PHE*     4.5     9.6    -      -       +      -
   1172A  IOD      4.1     3.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91A  THR*     3.1     8.5    -      -       -      +
     92A  THR*     1.3    77.7    -      -       -      +
     94A  ASP*     1.3    69.5    +      -       -      +
     96A  MET*     3.3     1.0    +      -       -      +
     97A  LYS*     2.9    47.3    +      -       +      +
    148A  LEU*     3.5    24.2    -      -       +      -
    151A  ILE*     3.6    30.2    -      -       +      +
    152A  GLN*     4.0    21.5    -      -       +      -
    155A  VAL*     4.8    13.7    -      -       +      -
   1172A  IOD      3.6     7.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 94 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86A  GLN*     6.1     1.1    -      -       -      +
     89A  TRP      3.4    16.8    -      -       -      +
     90A  GLY*     3.5     7.0    -      -       -      -
     91A  THR*     3.0    36.9    +      -       -      +
     93A  LEU*     1.3    81.3    -      -       -      +
     95A  ALA*     1.3    63.3    +      -       -      +
     97A  LYS*     3.4    11.8    +      -       -      +
     98A  ALA*     3.0    23.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 95 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  LEU*     3.4    31.1    -      -       +      +
     37A  PHE*     3.5    29.6    -      -       +      -
     51A  PHE*     3.9     9.0    -      -       +      -
     89A  TRP*     4.0     7.4    -      -       -      +
     91A  THR      2.9     8.2    +      -       -      +
     92A  THR      3.7     2.7    -      -       -      +
     94A  ASP*     1.3    80.6    -      -       -      +
     96A  MET*     1.3    57.7    +      -       -      +
     98A  ALA*     3.3     6.1    +      -       -      +
     99A  ALA*     2.9    27.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47A  VAL*     6.0     0.9    -      -       +      -
     50A  PHE*     3.7    37.9    -      -       +      -
     51A  PHE*     4.4     6.9    -      -       +      -
     92A  THR*     2.9    21.2    +      -       +      +
     93A  LEU      3.9     0.4    -      -       -      +
     95A  ALA*     1.3    73.3    -      -       -      +
     97A  LYS*     1.3    65.1    +      -       -      +
     99A  ALA*     3.3     5.8    +      -       -      +
    100A  ILE*     3.1    23.0    +      -       -      +
    144A  MET*     4.0    26.9    -      -       +      +
    147A  HIS*     4.0    24.2    -      -       +      -
    148A  LEU*     3.8    31.4    -      -       +      +
    151A  ILE*     4.2    14.6    -      -       +      -
    166A  PHE*     5.0     4.3    -      -       +      -
    171A  LEU*     5.4     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93A  LEU*     2.9    46.6    +      -       +      +
     94A  ASP*     3.6    11.9    -      -       -      +
     96A  MET*     1.3    78.1    -      -       -      +
     98A  ALA*     1.3    62.2    +      -       -      +
    100A  ILE*     3.0    27.2    -      -       +      +
    101A  VAL*     3.0    13.5    +      -       +      +
    148A  LEU*     3.7    15.5    -      -       +      -
    152A  GLN*     4.4    14.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33A  LEU*     5.6     2.7    -      -       +      -
     85A  SER*     6.0     0.4    -      -       -      +
     86A  GLN*     4.7     7.4    -      -       -      +
     89A  TRP*     4.3    27.6    -      -       +      -
     94A  ASP      3.0    16.5    +      -       -      +
     95A  ALA      3.7     5.4    -      -       -      +
     97A  LYS*     1.3    76.7    -      -       -      +
     99A  ALA*     1.3    57.9    +      -       -      +
    101A  VAL*     3.4     9.3    +      -       -      +
    102A  LEU*     3.0    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30A  TYR*     3.5    11.8    +      -       +      +
     33A  LEU*     5.0     2.4    -      -       +      +
     51A  PHE*     3.8    24.0    -      -       +      -
     95A  ALA      2.9    16.6    +      -       -      +
     96A  MET*     3.6     9.0    -      -       -      +
     97A  LYS      3.2     0.2    -      -       -      -
     98A  ALA*     1.3    77.7    -      -       -      +
    100A  ILE*     1.3    56.7    +      -       -      +
    102A  LEU*     3.2     6.7    +      -       -      +
    103A  GLU*     2.9    32.4    +      -       -      +
    144A  MET*     3.9    19.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96A  MET      3.1    11.3    +      -       -      +
     97A  LYS*     3.0    21.8    -      -       +      +
     99A  ALA*     1.3    74.4    -      -       -      +
    101A  VAL*     1.3    74.5    +      -       +      +
    103A  GLU*     3.4     1.8    +      -       -      +
    104A  LYS*     2.9    40.2    +      -       +      +
    141A  ILE*     4.0    21.3    -      -       +      +
    144A  MET*     3.6    33.6    -      -       +      -
    145A  GLY*     3.6    17.0    -      -       -      +
    148A  LEU*     3.9    20.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97A  LYS*     3.0    15.8    +      -       +      +
     98A  ALA*     3.6    12.3    -      -       -      +
    100A  ILE*     1.3    89.5    -      -       +      +
    102A  LEU*     1.3    62.8    +      -       -      +
    104A  LYS*     3.4     9.3    +      -       +      +
    105A  SER*     3.2    22.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22A  LEU      5.6     0.7    -      -       -      +
     26A  ALA*     4.1    24.2    -      -       +      +
     29A  THR*     3.7    33.7    -      -       +      +
     30A  TYR*     3.6    33.9    -      -       +      +
     33A  LEU*     5.8     0.2    -      -       +      -
     98A  ALA      3.0    14.1    +      -       -      +
     99A  ALA*     3.2     9.6    +      -       -      +
    101A  VAL*     1.3    78.9    -      -       -      +
    103A  GLU*     1.3    63.6    +      -       -      +
    105A  SER*     2.7    32.5    +      -       -      +
    106A  LEU*     3.1    11.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 103 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30A  TYR*     2.6    24.2    +      -       -      +
     58A  LYS*     2.7    41.5    +      -       -      -
     99A  ALA      2.9    19.0    +      -       -      +
    100A  ILE      4.0     3.1    -      -       -      +
    102A  LEU*     1.3    76.4    -      -       -      +
    104A  LYS*     1.3    57.6    +      -       -      +
    106A  LEU*     3.2     6.6    +      -       -      +
    107A  ASN*     2.8    26.5    +      -       -      +
    137A  GLU*     2.4    40.1    -      -       -      +
    140A  LEU*     3.5    12.4    -      -       +      +
    141A  ILE*     3.8    15.9    -      -       +      -
    144A  MET*     3.6    18.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 104 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100A  ILE*     2.9    36.5    +      -       +      +
    101A  VAL*     3.7     7.9    -      -       +      +
    103A  GLU*     1.3    75.8    -      -       -      +
    105A  SER*     1.3    58.0    +      -       -      +
    107A  ASN*     3.3     7.4    +      -       -      +
    108A  GLN*     2.8    31.4    +      -       -      +
    141A  ILE*     4.3    20.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 105 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22A  LEU*     5.1     3.3    -      -       -      +
    101A  VAL*     3.2    13.0    +      -       -      -
    102A  LEU*     2.7    30.9    +      -       -      +
    104A  LYS*     1.3    74.1    -      -       -      +
    106A  LEU*     1.3    68.1    +      -       -      +
    108A  GLN*     3.4     6.4    +      -       -      +
    109A  ALA*     3.0    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 106 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19A  LEU*     4.8     0.9    -      -       +      +
     22A  LEU*     3.7    43.1    -      -       +      +
     23A  TYR*     4.0    26.0    -      -       +      +
     26A  ALA*     3.8    14.1    -      -       +      -
     58A  LYS*     3.1    44.0    -      -       +      +
    102A  LEU*     3.1    14.3    +      -       +      +
    103A  GLU*     3.2    13.4    +      -       -      +
    105A  SER*     1.3    84.6    +      -       -      +
    107A  ASN*     1.3    57.7    +      -       -      +
    109A  ALA*     3.1     6.9    +      -       -      +
    110A  LEU*     2.8    34.1    +      -       -      +
    137A  GLU*     4.5     4.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 107 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103A  GLU      2.8    16.8    +      -       -      +
    104A  LYS*     3.6     6.1    -      -       -      +
    105A  SER      3.3     0.2    -      -       -      -
    106A  LEU*     1.3    76.5    -      -       -      +
    108A  GLN*     1.3    55.5    +      -       -      +
    110A  LEU*     3.0    12.9    +      -       -      +
    111A  LEU*     2.8    52.2    +      -       -      +
    134A  LEU*     4.6     8.7    +      -       -      +
    137A  GLU*     3.4    31.3    -      -       +      +
    138A  VAL*     5.0    10.2    -      -       -      +
    141A  ILE*     3.9    15.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 108 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104A  LYS      2.8    17.3    +      -       -      +
    105A  SER*     3.8     7.4    -      -       -      +
    107A  ASN*     1.3    76.3    -      -       -      +
    109A  ALA*     1.3    57.8    +      -       -      +
    111A  LEU*     3.2    23.0    +      -       -      +
    112A  ASP*     2.9    65.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 109 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  ARG*     4.1    12.3    -      -       -      +
     19A  LEU*     3.7    12.8    -      -       +      +
     22A  LEU*     3.6    28.7    -      -       +      -
    105A  SER      3.0    14.3    +      -       -      +
    106A  LEU      3.1     8.5    +      -       -      +
    108A  GLN*     1.3    77.1    -      -       -      +
    110A  LEU*     1.3    62.9    +      -       -      +
    112A  ASP*     3.5     9.2    +      -       -      +
    113A  LEU*     3.0    24.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 110 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19A  LEU*     3.7    25.1    -      -       +      -
     23A  TYR*     3.3    28.0    -      -       +      +
    106A  LEU      2.8    19.3    +      -       -      +
    107A  ASN*     3.0     9.2    +      -       -      +
    109A  ALA*     1.3    78.7    -      -       -      +
    111A  LEU*     1.3    56.9    +      -       -      +
    113A  LEU*     3.3     6.0    +      -       -      +
    114A  HIS*     2.9    28.4    +      -       -      +
    129A  LEU*     4.1    12.2    -      -       +      +
    133A  PHE*     3.8    32.1    -      -       +      +
    134A  LEU*     4.0    14.4    -      -       +      +
    137A  GLU*     3.9    28.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 111 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107A  ASN*     2.8    36.5    +      -       -      +
    108A  GLN*     3.2    28.0    +      -       -      +
    110A  LEU*     1.3    74.5    -      -       -      +
    112A  ASP*     1.3    60.9    +      -       -      +
    114A  HIS*     3.3     8.1    +      -       +      +
    115A  ALA*     2.9    28.6    +      -       -      +
    134A  LEU*     4.7    20.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 112 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  ARG*     5.8     1.6    +      -       -      -
    108A  GLN*     2.9    48.6    +      -       -      +
    109A  ALA*     3.7     7.8    -      -       -      +
    111A  LEU*     1.3    77.9    -      -       -      +
    113A  LEU*     1.3    59.0    +      -       -      +
    115A  ALA*     3.2     7.9    +      -       -      +
    116A  LEU*     2.9    27.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 113 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  VAL*     4.3     9.2    -      -       +      +
     15A  ALA*     3.8    28.3    -      -       +      +
     16A  VAL*     4.4    15.9    -      -       +      -
     19A  LEU*     4.0    25.8    -      -       +      -
     65A  LEU*     5.3     1.6    -      -       +      -
    109A  ALA      3.0    17.4    +      -       -      +
    110A  LEU*     3.7     5.2    -      -       -      +
    112A  ASP*     1.3    74.9    -      -       -      +
    114A  HIS*     1.3    59.7    +      -       -      +
    116A  LEU*     3.3    13.5    +      -       +      -
    117A  GLY      2.9    22.9    +      -       -      -
    125A  LEU*     3.5    24.1    -      -       +      +
    129A  LEU*     3.7    24.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 114 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110A  LEU      2.9    16.6    +      -       -      +
    111A  LEU*     3.6    10.3    -      -       +      +
    113A  LEU*     1.3    77.1    -      -       -      +
    115A  ALA*     1.3    60.0    +      -       -      +
    117A  GLY*     3.3     2.0    +      -       -      -
    118A  SER*     3.0    42.0    +      -       -      -
    126A  CYS*     3.4    35.7    -      -       +      +
    129A  LEU*     3.7    13.2    -      -       +      +
    130A  GLU*     2.7    35.5    +      -       +      -
    134A  LEU*     4.1    16.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 115 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  LEU      2.9    16.8    +      -       -      +
    112A  ASP*     3.6     9.0    -      -       -      +
    114A  HIS*     1.3    75.4    +      -       -      +
    116A  LEU*     1.3    59.4    +      -       -      +
    118A  SER*     3.8     7.2    -      -       -      -
    119A  ALA*     2.9    30.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 116 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  GLU*     3.7    33.7    -      -       +      +
     12A  VAL*     3.8    15.7    -      -       +      -
     15A  ALA*     3.9    15.5    -      -       +      -
    112A  ASP      2.9    13.5    +      -       -      +
    113A  LEU*     3.5    10.5    -      -       +      +
    114A  HIS      3.3     0.2    -      -       -      -
    115A  ALA*     1.3    75.3    -      -       -      +
    117A  GLY*     1.3    59.0    +      -       -      +
    119A  ALA*     3.1    10.3    +      -       +      +
    120A  GLN*     2.8    56.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 117 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  VAL*     4.4     3.8    -      -       -      -
    113A  LEU      2.9    10.1    +      -       -      -
    114A  HIS      3.3     4.4    +      -       -      -
    116A  LEU*     1.3    76.9    -      -       -      +
    118A  SER*     1.3    58.6    +      -       -      +
    120A  GLN      3.2     1.6    +      -       -      -
    121A  ALA      3.1     4.7    +      -       -      -
    122A  ASP*     2.8    35.1    +      -       -      -
    125A  LEU*     3.7    23.3    -      -       -      +
    126A  CYS*     3.9     9.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 118 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114A  HIS*     3.0    35.4    +      -       -      -
    115A  ALA*     3.8     8.4    -      -       -      -
    117A  GLY*     1.3    71.8    -      -       -      +
    119A  ALA*     1.3    68.2    +      -       -      +
    121A  ALA*     3.0    13.3    +      -       -      +
    126A  CYS*     3.7     7.8    -      -       -      -
   1173A  IOD      4.2     7.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 119 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115A  ALA      2.9    18.2    +      -       -      +
    116A  LEU*     3.4    12.6    -      -       +      +
    118A  SER*     1.3    79.0    -      -       -      +
    120A  GLN*     1.3    60.4    +      -       -      +
    121A  ALA*     3.4     1.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 120 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7A  ASN*     4.2     9.5    +      -       -      +
      9A  SER*     3.0    35.1    +      -       -      +
     11A  GLU*     3.3    23.8    -      -       -      +
     12A  VAL*     3.6     2.8    -      -       -      +
    116A  LEU*     2.8    45.4    +      -       -      +
    117A  GLY*     3.9     5.4    -      -       -      +
    118A  SER      3.1     0.4    -      -       -      -
    119A  ALA*     1.3    76.1    -      -       -      +
    121A  ALA*     1.3    72.0    +      -       -      +
    122A  ASP*     3.4     8.0    -      -       +      +
----------------------------------------------------------
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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