Contacts of the helix formed by residues 9 - 33 (chain G) in PDB entry 1QGH


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 9 (chain G).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8G  ASP*     1.3    72.8    -      -       -      +
     10G  LYS*     1.3    53.9    +      -       -      +
     12G  PHE*     2.9     8.3    +      -       +      +
     13G  LEU*     2.6    59.1    +      -       +      +
     67G  ILE*     3.9     7.9    -      -       +      -
    119G  LEU*     3.9     7.8    -      -       -      +
    120G  THR*     4.1    15.3    +      -       -      +
    123G  GLU*     2.8    30.1    +      -       -      +
    125G  ASP*     3.7    24.5    +      -       -      +
    128G  THR*     3.9    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 10 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8G  ASP*     3.3    13.3    +      -       -      +
      9G  THR*     1.3    78.1    -      -       -      +
     11G  GLU*     1.3    69.9    +      -       -      +
     13G  LEU      3.2     0.2    +      -       -      -
     14G  ASN*     2.8    32.1    +      -       -      +
     64G  LEU*     3.6    19.5    -      -       +      +
     67G  ILE*     3.5    37.4    +      -       +      -
     68G  GLY*     3.8    14.9    +      -       -      -
     69G  GLY*     4.0    16.2    -      -       -      -
    155L  LEU*     6.1     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 11 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7G  VAL*     3.0    32.9    -      -       +      +
      8G  ASP*     2.7    34.2    +      -       -      +
     10G  LYS*     1.3    79.6    -      -       -      +
     12G  PHE*     1.3    64.1    -      -       -      +
     14G  ASN*     4.0     6.1    +      -       -      +
     15G  HIS*     3.0    24.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 12 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7G  VAL*     4.4    10.7    -      -       +      +
      8G  ASP      2.8    13.6    +      -       -      +
      9G  THR*     3.4     7.4    -      -       +      +
     11G  GLU*     1.3    75.4    -      -       -      +
     13G  LEU*     1.3    83.0    +      -       +      +
     15G  HIS*     3.0    17.9    +      -       +      +
     16G  GLN*     3.1    43.6    +      -       +      +
    112G  GLU*     3.1    29.4    -      -       +      -
    113G  TYR*     3.9    12.8    -      +       -      -
    115G  GLN*     4.7     4.3    -      -       +      -
    116G  GLY*     3.4    28.3    -      -       -      -
    119G  LEU*     3.8    15.7    -      -       +      -
    120G  THR*     5.8     1.1    -      -       -      -
    132G  LEU*     3.9    21.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 13 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9G  THR*     2.6    38.4    +      -       +      +
     10G  LYS      3.7     3.1    -      -       -      +
     12G  PHE*     1.3    96.8    -      -       +      +
     14G  ASN*     1.3    63.8    +      -       -      +
     16G  GLN*     2.9    14.4    +      -       +      -
     17G  VAL*     3.1     9.0    +      -       -      -
     60G  VAL*     3.5    28.7    -      -       +      +
     63G  ARG*     4.3    11.0    -      -       +      -
     64G  LEU*     4.2    14.8    -      -       +      -
     67G  ILE*     3.9    17.0    -      -       +      -
    128G  THR*     3.7    27.6    -      -       +      +
    131G  MET*     4.3    12.1    -      -       +      -
    132G  LEU*     4.3     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 14 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10G  LYS      2.8    20.9    +      -       -      +
     11G  GLU*     4.0     6.3    +      -       -      +
     13G  LEU*     1.3    72.9    -      -       -      +
     15G  HIS*     1.3    64.5    +      -       -      +
     17G  VAL*     2.9    16.1    +      -       -      +
     18G  ALA      3.1     9.7    +      -       -      -
     64G  LEU*     3.6    13.6    -      -       +      +
     70G  SER      3.2    20.0    +      -       -      -
     71G  PRO*     3.2     5.7    -      -       -      +
     72G  PHE*     2.7    72.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 15 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11G  GLU      3.0    13.7    +      -       -      +
     12G  PHE*     3.0    14.3    +      -       +      +
     14G  ASN*     1.3    76.4    -      -       -      +
     16G  GLN*     1.3    67.6    +      -       -      +
     18G  ALA*     3.2     6.2    +      -       -      +
     19G  ASN*     2.9    27.2    +      -       -      -
     72G  PHE*     4.3     6.2    -      -       -      -
     81G  ASN*     2.8    31.4    +      -       +      -
     83G  SER*     2.8    40.7    +      -       -      -
    112G  GLU*     3.0    20.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 16 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12G  PHE*     3.1    48.0    +      -       +      +
     13G  LEU*     2.9     7.4    +      -       +      +
     15G  HIS*     1.3    84.3    +      -       -      +
     17G  VAL*     1.3    61.0    +      -       -      +
     19G  ASN*     3.0    24.0    +      -       -      +
     20G  LEU*     2.7    47.1    +      -       +      +
     60G  VAL*     4.3    12.3    -      -       +      -
    109G  LEU*     3.7     4.7    -      -       -      +
    112G  GLU*     3.0    27.3    +      -       -      +
    113G  TYR*     3.6    25.6    -      -       +      +
    132G  LEU*     6.0     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 17 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32E  TRP*     4.3    13.0    -      -       +      -
     13G  LEU      3.1    16.2    +      -       -      +
     14G  ASN*     2.9    22.8    +      -       -      +
     16G  GLN*     1.3    80.3    -      -       -      +
     18G  ALA*     1.3    62.3    +      -       -      +
     20G  LEU*     3.9     3.6    -      -       -      +
     21G  ASN*     2.9    34.3    +      -       -      +
     57G  MET*     4.4     5.4    -      -       -      +
     60G  VAL*     3.7    17.9    -      -       +      -
     61G  ALA*     3.9    22.0    -      -       +      +
     64G  LEU*     4.9     1.3    -      -       +      -
     71G  PRO*     4.6     3.4    -      -       +      -
     72G  PHE*     3.8    22.9    -      -       +      +
     78G  PHE*     3.8    10.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 18 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14G  ASN      3.1     8.8    +      -       -      +
     15G  HIS      3.4     8.7    -      -       -      +
     17G  VAL*     1.3    79.9    -      -       -      +
     19G  ASN*     1.3    63.7    +      -       -      +
     21G  ASN*     3.3     3.3    +      -       -      +
     22G  VAL*     3.2    22.5    +      -       -      +
     72G  PHE*     4.3     3.8    -      -       +      -
     78G  PHE*     3.6    38.5    -      -       -      +
     81G  ASN*     3.9    13.2    -      -       +      -
     82G  ALA*     3.7    13.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 19 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15G  HIS*     2.9    15.6    +      -       -      -
     16G  GLN*     3.0    24.4    +      -       -      +
     18G  ALA*     1.3    75.6    -      -       -      +
     20G  LEU*     1.3    60.3    +      -       -      +
     22G  VAL*     3.1     4.2    +      -       -      +
     23G  PHE*     2.8    29.7    +      -       -      +
     82G  ALA*     3.4     5.1    -      -       -      -
     83G  SER*     2.7    36.8    +      -       -      -
     84G  VAL*     3.2    20.7    +      -       +      +
    108G  LEU*     4.1     5.9    -      -       -      +
    109G  LEU*     4.0     6.2    -      -       +      +
    112G  GLU*     2.9    29.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 20 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16G  GLN*     2.7    27.0    +      -       +      +
     19G  ASN*     1.3    72.9    -      -       -      +
     21G  ASN*     1.3    57.5    +      -       -      +
     23G  PHE*     3.2     4.8    +      -       +      +
     24G  THR*     2.9    33.0    +      -       -      -
     53G  PHE*     4.2    23.8    -      -       +      +
     56G  GLN*     4.1     5.2    -      -       +      -
     57G  MET*     3.6    45.5    -      -       +      +
     60G  VAL*     4.1    14.8    -      -       +      -
    109G  LEU*     4.1    27.1    -      -       +      -
    113G  TYR*     3.5    28.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 21 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25E  VAL*     4.5     8.3    -      -       -      +
     28E  HIS*     5.4     1.2    -      -       -      -
     50E  TYR*     5.4     1.6    +      -       -      -
     75E  LEU*     4.2     4.1    -      -       +      +
     17G  VAL*     2.9    25.8    +      -       -      +
     18G  ALA      3.7     5.4    -      -       -      +
     19G  ASN      3.2     0.2    -      -       -      -
     20G  LEU*     1.3    78.1    -      -       -      +
     22G  VAL*     1.3    60.8    +      -       -      +
     24G  THR*     3.3    24.1    -      -       -      +
     25G  VAL*     3.3    13.9    -      -       -      +
     57G  MET*     3.2    38.4    -      -       -      +
     78G  PHE*     3.2    49.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 22 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75E  LEU*     4.1    23.7    -      -       +      +
     18G  ALA      3.2    13.9    +      -       -      +
     19G  ASN      3.1     6.6    +      -       -      +
     21G  ASN*     1.3    75.6    -      -       -      +
     23G  PHE*     1.3    68.1    +      -       -      +
     25G  VAL*     3.2     4.7    +      -       -      +
     26G  LYS*     3.0    20.1    +      -       -      +
     78G  PHE*     4.6     3.8    -      -       +      +
     79G  LEU*     5.0     6.3    -      -       +      -
     82G  ALA*     3.5    21.5    -      -       +      -
     84G  VAL*     3.7    30.3    -      -       +      +
     85G  GLU      4.5     0.2    -      -       -      +
     86G  GLU*     3.9    31.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 23 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19G  ASN      2.8    16.5    +      -       -      +
     20G  LEU*     3.2     8.3    +      -       +      +
     22G  VAL*     1.3    79.5    -      -       -      +
     24G  THR*     1.3    57.0    +      -       -      +
     26G  LYS*     2.9    14.5    +      -       +      +
     27G  ILE*     2.8    44.1    +      -       +      +
     49G  LEU*     5.2     1.1    -      -       +      -
     53G  PHE*     3.7    40.4    -      +       +      -
     84G  VAL*     4.3     5.4    -      -       +      +
    102G  LEU*     3.5    33.9    -      -       +      -
    105G  THR*     3.5    29.6    -      -       +      -
    106G  LEU*     3.8    17.5    -      -       +      -
    109G  LEU*     3.5    22.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 24 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50E  TYR*     5.8     3.6    -      -       -      +
     20G  LEU      2.9    15.8    +      -       -      +
     21G  ASN*     3.3    23.6    -      -       -      +
     23G  PHE*     1.3    80.1    -      -       -      +
     25G  VAL*     1.3    71.3    +      -       +      +
     27G  ILE*     3.2     9.2    +      -       -      +
     28G  HIS      3.1    16.6    +      -       -      -
     50G  TYR*     3.4    54.4    +      -       +      +
     53G  PHE*     4.7     4.2    -      -       -      +
     54G  GLY*     4.3    12.4    +      -       -      -
     57G  MET*     6.1     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 25 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21E  ASN*     4.5     8.1    -      -       -      +
     73E  SER*     3.7    21.3    -      -       -      +
     74E  THR*     3.9     7.4    -      -       -      +
     75E  LEU*     3.7    17.3    -      -       +      -
     78E  PHE*     3.5    34.3    -      -       +      -
     21G  ASN      3.3    14.4    -      -       -      +
     22G  VAL      3.2     6.8    +      -       -      +
     24G  THR*     1.3    80.8    -      -       +      +
     26G  LYS*     1.3    65.8    +      -       -      +
     28G  HIS*     3.1    12.7    +      -       +      +
     29G  GLN*     3.0    21.3    +      -       -      +
     32G  TRP*     6.0     0.4    -      -       +      -
     50G  TYR*     5.2     0.7    -      -       +      -
     86G  GLU*     4.8     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 26 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73E  SER      5.3     1.1    -      -       -      -
     22G  VAL*     3.0    11.8    +      -       +      +
     23G  PHE*     2.9    20.0    +      -       +      +
     25G  VAL*     1.3    79.5    -      -       -      +
     27G  ILE*     1.3    61.9    +      -       -      +
     29G  GLN*     3.1    25.4    +      -       -      +
     30G  ILE*     3.1    25.3    +      -       +      +
     84G  VAL*     4.3     9.4    -      -       -      -
     85G  GLU      2.8    29.5    +      -       -      -
     86G  GLU*     3.9    13.3    -      -       +      +
     87G  ALA      4.8     2.8    -      -       -      +
    101G  ASP*     3.3    39.2    +      -       -      +
    102G  LEU*     5.2     0.2    -      -       -      -
    105G  THR*     3.5    26.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 27 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23G  PHE*     2.8    56.0    +      -       +      +
     24G  THR*     3.2    13.4    +      -       -      +
     26G  LYS*     1.3    76.4    -      -       -      +
     28G  HIS*     1.3    65.4    +      -       -      +
     30G  ILE*     3.3     9.1    +      -       +      +
     31G  HIS*     3.0    23.3    +      -       +      +
     46G  MET*     3.3    40.5    -      -       +      +
     49G  LEU*     4.0    30.1    -      -       +      +
     50G  TYR*     3.9    12.3    -      -       +      +
     53G  PHE*     4.4     3.6    -      -       +      -
    102G  LEU*     4.8     6.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 28 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21E  ASN*     5.4     1.3    -      -       -      -
     54E  GLY      5.3     1.4    +      -       -      -
     57E  MET*     3.5    30.1    -      -       +      +
     58E  ASP*     3.7    27.7    +      -       +      +
     24G  THR      3.1     6.5    +      -       -      +
     25G  VAL*     3.1    16.4    +      -       +      +
     27G  ILE*     1.3    79.7    -      -       -      +
     29G  GLN*     1.3    56.5    +      -       -      +
     31G  HIS*     3.1    12.7    +      +       -      +
     32G  TRP*     2.9    55.7    +      +       +      -
     47G  ASP*     4.8     5.8    +      -       -      -
     50G  TYR*     3.1    52.8    +      +       +      +
----------------------------------------------------------
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Residues in contact with GLN 29 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73E  SER*     2.9    48.2    +      -       -      +
     74E  THR*     4.1     0.7    -      -       -      +
     25G  VAL      3.0    10.1    +      -       -      +
     26G  LYS*     3.1    20.3    +      -       -      +
     28G  HIS*     1.3    76.2    -      -       -      +
     30G  ILE*     1.3    61.9    +      -       -      +
     32G  TRP*     3.2     1.9    +      -       -      -
     33G  TYR*     2.8    46.4    +      -       +      +
     87G  ALA      3.0    28.2    +      -       -      +
     89G  TYR*     3.9    17.9    +      -       +      +
     93G  LYS*     4.3    18.6    -      -       -      +
     98G  LEU*     5.3     3.9    -      -       +      +
    101G  ASP*     4.7     8.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 30 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23G  PHE*     6.3     0.2    -      -       +      -
     26G  LYS*     3.1    25.8    +      -       +      +
     27G  ILE*     3.5     8.5    -      -       -      +
     29G  GLN*     1.3    81.3    -      -       +      +
     31G  HIS*     1.3    60.2    +      -       -      +
     33G  TYR*     4.6     0.4    -      -       -      +
     34G  MET*     2.9    46.1    +      -       +      +
     46G  MET*     3.8     9.6    -      -       -      -
     98G  LEU*     3.7    46.7    -      -       +      +
     99G  MET*     3.5    25.1    -      -       +      -
    101G  ASP*     5.3     3.1    -      -       +      +
    102G  LEU*     3.9    28.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 31 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157B   FE      2.4    28.1    -      -       -      -
     58E  ASP*     3.7     5.4    -      -       -      -
     62E  GLU*     3.1     2.6    +      -       -      -
     27G  ILE*     3.0    16.6    +      -       +      +
     28G  HIS*     3.2    11.4    -      -       -      +
     30G  ILE*     1.3    81.8    -      -       -      +
     32G  TRP*     1.3    81.1    +      +       -      +
     34G  MET*     3.9     8.9    -      -       -      +
     39G  PHE*     4.7     0.3    -      -       -      -
     43G  HIS*     2.9    76.3    +      +       -      -
     46G  MET*     3.7    18.5    -      -       +      +
     47G  ASP*     3.2    25.2    +      -       -      -
    144I  TRP*     4.6     1.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 32 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17E  VAL*     4.4     4.5    -      -       +      -
     21E  ASN*     5.0     2.0    -      -       -      -
     57E  MET*     3.6    29.6    -      -       +      -
     58E  ASP*     2.6    29.3    +      -       -      -
     61E  ALA*     3.5    26.9    -      -       +      +
     62E  GLU*     3.8    17.8    -      -       +      +
     65E  LEU*     3.5    34.0    -      -       +      +
     71E  PRO*     3.8    17.0    -      -       +      -
     72E  PHE      3.5    20.9    -      -       -      -
     73E  SER*     4.1    15.5    -      -       -      -
     78E  PHE*     4.9     3.4    -      +       -      -
     25G  VAL*     5.7     0.9    -      -       +      -
     28G  HIS*     2.9    42.3    +      +       +      +
     29G  GLN*     3.8     2.7    -      -       -      +
     31G  HIS*     1.3    96.0    -      +       -      +
     33G  TYR*     1.3    67.9    +      -       +      +
     34G  MET      3.5     2.6    -      -       -      +
     43G  HIS*     5.4     0.2    -      +       -      -
    144I  TRP*     4.1    10.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 33 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65E  LEU*     4.7     6.3    -      -       +      -
     70E  SER*     3.0    23.5    +      -       -      -
     71E  PRO*     2.5    51.8    +      -       +      -
     73E  SER*     3.5    23.6    -      -       -      -
     29G  GLN*     2.8    31.6    +      -       +      +
     30G  ILE*     5.2     1.1    -      -       -      -
     32G  TRP*     1.3    82.2    -      -       +      +
     34G  MET*     1.3    67.2    +      -       -      +
     35G  ARG*     3.5    11.1    +      -       -      +
     89G  TYR*     3.4    69.5    +      +       +      -
     93G  LYS      5.4     0.7    -      -       -      +
     98G  LEU*     4.6     1.8    -      -       +      -
----------------------------------------------------------
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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