Contacts of the helix formed by residues 1 - 32 (chain D) in PDB entry 1W5J


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 ARG 1 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2D  MET*     1.3    59.6    +      -       -      +
      3D  ARG*     3.4    10.7    -      -       -      +
      4D  GLN*     3.1    18.2    +      -       -      +
      5D  ILE*     3.0    32.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 2 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30C  LEU*     3.9    42.0    -      -       +      +
     33C  ARG*     5.5    11.7    -      -       +      +
      1D  ARG*     1.3    68.2    -      -       -      +
      3D  ARG*     1.3    67.1    +      -       -      +
      5D  ILE*     3.3    23.4    +      -       +      +
      6D  GLU*     2.9    39.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 3 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1D  ARG      3.4     6.6    -      -       -      +
      2D  MET*     1.3    77.2    -      -       -      +
      4D  GLN*     1.3    62.7    +      -       -      +
      6D  GLU*     3.3    17.2    +      -       -      +
      7D  ASP*     3.0    30.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 4 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1D  ARG*     3.1    20.8    +      -       -      +
      3D  ARG*     1.3    78.7    -      -       -      +
      5D  ILE*     1.3    64.4    +      -       +      +
      7D  ASP*     3.1    13.4    +      -       +      +
      8D  ARG*     2.9    32.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 5 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30C  LEU*     3.9    25.4    -      -       +      -
      1D  ARG      3.0    12.0    +      -       -      +
      2D  MET*     3.4    32.1    -      -       +      +
      4D  GLN*     1.3    76.0    -      -       +      +
      6D  GLU*     1.3    56.7    +      -       -      +
      8D  ARG*     3.1     9.2    +      -       -      +
      9D  LEU*     2.9    35.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 6 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27C  ARG*     3.1    38.6    +      -       +      +
     30C  LEU*     3.0    44.2    -      -       +      +
     31C  GLY*     3.1    16.4    +      -       -      +
      2D  MET*     2.9    30.1    +      -       -      +
      3D  ARG*     3.5    14.6    +      -       -      +
      4D  GLN      3.3     0.2    -      -       -      -
      5D  ILE*     1.3    68.4    -      -       -      +
      7D  ASP*     1.3    66.3    +      -       -      +
      9D  LEU*     3.5     4.3    +      -       -      -
     10D  GLU*     3.1    17.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 7 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27C  ARG*     5.3     4.6    +      -       -      +
      3D  ARG*     3.0    18.5    +      -       -      +
      4D  GLN*     3.3    12.8    -      -       +      +
      6D  GLU*     1.3    76.5    -      -       -      +
      8D  ARG*     1.4    60.5    +      -       +      +
     10D  GLU*     3.3     8.2    +      -       -      +
     11D  GLU*     3.0    39.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 8 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4D  GLN*     2.9    31.2    +      -       +      +
      5D  ILE*     3.1     9.8    +      -       -      +
      7D  ASP*     1.4    72.9    -      -       +      +
      9D  LEU*     1.3    62.3    +      -       +      +
     11D  GLU*     3.3    19.5    +      -       -      +
     12D  ILE*     2.9    37.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 9 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23C  LEU*     4.3    28.2    -      -       +      +
     26C  ILE*     4.1    15.3    -      -       +      -
     27C  ARG*     4.3    20.4    -      -       +      -
     30C  LEU*     3.7    30.1    -      -       +      -
      5D  ILE*     2.9    26.2    +      -       +      +
      6D  GLU*     3.9     5.4    -      -       -      +
      7D  ASP      3.3     0.2    -      -       -      -
      8D  ARG*     1.3    76.6    -      -       +      +
     10D  GLU*     1.4    51.6    +      -       -      +
     12D  ILE*     3.1    21.8    +      -       +      +
     13D  LEU*     2.7    41.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 10 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27C  ARG*     2.7    44.5    +      -       -      +
      6D  GLU      3.1    14.8    +      -       -      +
      7D  ASP*     3.5    11.0    -      -       -      +
      9D  LEU*     1.4    76.4    -      -       -      +
     11D  GLU*     1.4    61.8    +      -       -      +
     13D  LEU*     3.1    17.0    +      -       -      +
     14D  SER*     3.0    22.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 11 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7D  ASP*     3.0    29.6    +      -       -      +
      8D  ARG*     3.3    22.2    +      -       -      +
     10D  GLU*     1.4    73.6    -      -       -      +
     12D  ILE*     1.4    66.0    +      -       +      +
     14D  SER*     3.2     9.5    +      -       -      -
     15D  LYS*     3.0    40.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 12 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23C  LEU*     4.4    12.1    -      -       +      -
      8D  ARG*     2.9    26.5    +      -       +      +
      9D  LEU*     3.4    27.4    -      -       +      +
     11D  GLU*     1.4    76.4    -      -       +      +
     13D  LEU*     1.3    64.4    +      -       -      +
     15D  LYS*     3.1    15.1    +      -       +      +
     16D  LEU*     2.9    42.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 13 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20C  CYS*     3.3    38.6    -      -       +      +
     23C  LEU*     4.0    18.8    -      -       +      +
     24C  ALA*     3.6    32.1    -      -       +      +
     27C  ARG*     4.8     5.2    -      -       +      +
      9D  LEU      2.7    22.7    +      -       -      +
     10D  GLU*     3.1    25.5    +      -       -      +
     12D  ILE*     1.3    73.3    -      -       -      +
     14D  SER*     1.3    63.5    +      -       -      +
     16D  LEU*     3.0    14.2    +      -       +      +
     17D  TYR*     3.0    39.9    +      -       +      -
----------------------------------------------------------
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Residues in contact with SER 14 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10D  GLU*     3.0    13.0    +      -       -      -
     11D  GLU*     3.4    12.8    -      -       -      -
     13D  LEU*     1.3    76.6    -      -       -      +
     15D  LYS*     1.3    63.5    +      -       -      -
     17D  TYR*     4.1     6.7    -      -       -      +
     18D  HIS*     3.0    46.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 15 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11D  GLU*     3.0    31.0    +      -       -      +
     12D  ILE*     3.1    13.0    +      -       -      +
     14D  SER*     1.3    77.5    -      -       -      +
     16D  LEU*     1.3    58.5    +      -       +      +
     18D  HIS*     3.4     9.5    +      -       -      +
     19D  ILE*     2.9    40.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 16 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16C  LEU*     4.5    19.1    -      -       +      -
     19C  ILE*     4.4     9.6    -      -       +      -
     20C  CYS*     3.5    21.3    -      -       -      -
     23C  LEU*     3.7    29.8    -      -       +      -
     12D  ILE*     2.9    25.2    +      -       +      +
     13D  LEU*     3.0     7.6    +      -       -      +
     15D  LYS*     1.3    75.2    -      -       +      +
     17D  TYR*     1.3    52.1    +      -       -      +
     19D  ILE*     3.1    21.6    +      -       +      +
     20D  CYS*     2.8    38.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 17 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17C  TYR*     4.4    25.7    +      +       -      -
     20C  CYS*     3.4    32.3    +      -       +      +
     21C  ASN*     3.7    16.6    +      -       -      -
     24C  ALA*     5.7     2.9    -      -       +      +
     13D  LEU*     3.0    45.6    +      -       +      +
     14D  SER*     4.1     6.1    -      -       -      +
     16D  LEU*     1.3    73.8    -      -       -      +
     18D  HIS*     1.3    60.0    +      -       +      +
     20D  CYS*     3.2     4.5    +      -       -      +
     21D  ASN*     2.8    42.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 18 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14D  SER*     3.0    36.5    +      -       -      +
     15D  LYS*     3.7     8.9    -      -       -      +
     17D  TYR*     1.3    76.8    -      -       +      +
     19D  ILE*     1.3    61.6    +      -       +      +
     21D  ASN*     3.4    15.3    +      -       -      +
     22D  GLU*     3.0    33.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 19 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16C  LEU*     4.5     8.1    -      -       +      -
     15D  LYS*     2.9    29.9    +      -       +      +
     16D  LEU*     3.1    22.2    +      -       +      +
     18D  HIS*     1.3    72.6    -      -       +      +
     20D  CYS*     1.4    57.0    +      -       -      +
     22D  GLU*     3.0    21.1    +      -       -      +
     23D  LEU*     2.8    52.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 20 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13C  LEU*     3.3    14.7    -      -       +      +
     16C  LEU*     3.6    35.7    -      -       -      -
     17C  TYR*     3.6    36.8    -      -       +      +
     20C  CYS*     4.5     6.1    -      -       -      -
     16D  LEU      2.8    25.9    +      -       -      -
     17D  TYR*     3.5     9.2    -      -       -      +
     19D  ILE*     1.4    72.3    -      -       -      +
     21D  ASN*     1.3    59.4    +      -       -      +
     23D  LEU*     3.2     3.6    +      -       -      -
     24D  ALA*     2.9    27.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 21 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17C  TYR*     4.7     7.0    +      -       -      -
     17D  TYR*     2.8    35.2    +      -       -      +
     18D  HIS*     3.7    18.4    -      -       -      +
     20D  CYS*     1.3    78.0    -      -       -      +
     22D  GLU*     1.4    61.7    +      -       +      +
     24D  ALA*     3.5     7.0    +      -       -      +
     25D  ARG*     3.1    23.2    +      -       -      +
     28D  ARG*     4.7     2.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 22 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18D  HIS*     3.0    27.0    +      -       +      +
     19D  ILE*     3.0    22.9    +      -       -      +
     21D  ASN*     1.4    75.0    -      -       +      +
     23D  LEU*     1.3    58.9    +      -       +      +
     25D  ARG*     3.3    10.0    +      -       -      +
     26D  ILE*     2.9    38.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 23 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9C  LEU*     4.6    23.3    -      -       +      +
     12C  ILE*     4.4    13.9    -      -       +      -
     13C  LEU*     3.9    13.9    -      -       +      +
     16C  LEU*     3.7    29.6    -      -       +      -
     19D  ILE*     2.8    28.4    +      -       +      +
     20D  CYS*     3.2     7.2    +      -       -      +
     22D  GLU*     1.3    73.4    -      -       +      +
     24D  ALA*     1.3    65.8    +      -       -      +
     26D  ILE*     3.2    17.1    +      -       +      +
     27D  ARG*     2.9    22.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 24 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13C  LEU*     3.6    21.2    -      -       +      +
     17C  TYR*     4.7     7.2    -      -       -      +
     20D  CYS      2.9    19.7    +      -       -      +
     21D  ASN*     3.8     7.6    -      -       -      +
     23D  LEU*     1.3    72.2    -      -       -      +
     25D  ARG*     1.4    65.1    +      -       -      +
     27D  ARG*     3.2     5.4    +      -       -      +
     28D  ARG*     2.8    46.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 25 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21D  ASN      3.1    14.1    +      -       -      +
     22D  GLU*     3.4    12.6    -      -       -      +
     24D  ALA*     1.4    77.0    -      -       -      +
     26D  ILE*     1.3    65.7    +      -       +      +
     28D  ARG*     3.2    23.5    +      -       -      +
     29D  LEU*     2.9    49.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 26 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9C  LEU*     4.2    18.2    -      -       +      -
     22D  GLU*     2.9    26.3    +      -       +      +
     23D  LEU*     3.7    18.6    -      -       +      +
     24D  ALA      3.2     0.2    -      -       -      -
     25D  ARG*     1.3    75.1    -      -       +      +
     27D  ARG*     1.3    64.2    +      -       -      +
     29D  LEU*     3.1    17.2    +      -       +      +
     30D  LEU*     2.9    35.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 27 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6C  GLU*     4.2    18.1    -      -       -      +
      9C  LEU*     4.2    22.1    -      -       +      +
     10C  GLU*     3.4    39.0    -      -       +      +
     13C  LEU*     4.6     4.7    -      -       +      -
     23D  LEU      2.9    17.4    +      -       -      +
     24D  ALA*     3.3    13.5    -      -       -      +
     26D  ILE*     1.3    72.6    -      -       -      +
     28D  ARG*     1.4    65.5    +      -       -      +
     30D  LEU*     3.4     5.2    +      -       -      +
     31D  GLY*     2.9    24.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 28 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21D  ASN      4.7     2.0    +      -       -      -
     24D  ALA*     2.8    40.5    +      -       -      +
     25D  ARG*     3.5    33.3    -      -       -      +
     27D  ARG*     1.4    79.6    -      -       -      +
     29D  LEU*     1.4    62.3    +      -       +      +
     31D  GLY*     3.0    12.7    +      -       -      +
     32D  GLU*     3.1    21.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 29 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25D  ARG*     2.9    53.5    +      -       +      +
     26D  ILE*     3.4    19.1    -      -       +      +
     28D  ARG*     1.4    70.9    -      -       +      +
     30D  LEU*     1.3    65.7    +      -       +      +
     32D  GLU*     3.1    18.7    +      -       +      +
     33D  ARG*     3.5    16.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 30 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2C  MET*     3.7    27.9    -      -       +      +
      5C  ILE*     3.8    29.2    -      -       +      -
      6C  GLU*     3.6    20.3    -      -       +      +
      9C  LEU*     3.9    18.4    -      -       +      -
     26D  ILE*     2.9    25.7    +      -       +      +
     27D  ARG      3.5     4.9    -      -       -      +
     29D  LEU*     1.3    78.4    -      -       +      +
     31D  GLY*     1.3    56.5    +      -       -      +
     33D  ARG*     3.1    42.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 31 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6C  GLU*     3.7    16.7    +      -       -      -
     27D  ARG*     2.9    15.3    +      -       -      -
     28D  ARG*     3.0     7.0    +      -       -      -
     30D  LEU*     1.3    73.9    -      -       -      +
     32D  GLU*     1.3    60.2    +      -       -      +
     33D  ARG      3.5     2.9    +      -       -      +
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Residues in contact with GLU 32 (chain D). Click here for Legend to table.
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                                  Specific contacts
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     Residue       Dist    Surf   HB    Arom    Phob    DC
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     28D  ARG*     3.1    17.1    +      -       +      +
     29D  LEU*     3.1    13.1    +      -       +      +
     31D  GLY*     1.3    76.7    -      -       -      +
     33D  ARG*     1.3    65.6    +      -       -      +
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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
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  Atomic class           I  II  III   IV   V   VI  VII  VIII
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   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
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Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il