Contacts of the helix formed by residues 2 - 31 (chain D) in PDB entry 1GCL


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 MET 2 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2A  MET*     3.1    40.6    -      -       +      -
      1C  ARG*     2.8    53.9    -      -       -      +
      2C  MET*     4.1    17.5    -      -       +      +
      5C  ILE*     5.0     7.1    -      -       +      +
      1D  ARG*     1.4    74.8    -      -       +      +
      3D  LYS*     1.3    62.7    +      -       -      +
      4D  GLN      2.9     5.6    -      -       -      -
      5D  ILE*     3.1    27.8    +      -       +      +
      6D  GLU*     3.7     5.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 3 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1C  ARG*     4.8     5.3    -      -       -      +
      1D  ARG      5.1     0.4    -      -       -      +
      2D  MET*     1.3    75.6    -      -       -      +
      4D  GLN*     1.4    64.8    +      -       +      +
      6D  GLU*     3.3     5.3    +      -       +      +
      7D  ASP*     2.6    49.8    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
      6A  GLU*     3.6    30.5    +      -       -      +
      0D  ACE      4.2     9.2    -      -       -      +
      1D  ARG*     3.1    51.0    +      -       -      +
      3D  LYS*     1.4    79.7    -      -       +      +
      5D  ILE*     1.3    52.2    +      -       -      +
      7D  ASP*     2.9    10.2    +      -       -      +
      8D  LYS*     2.7    41.4    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
      2A  MET*     3.3    42.8    -      -       +      +
      5A  ILE*     3.8    25.1    -      -       +      -
      6A  GLU*     4.0    17.7    -      -       +      -
      9A  LEU*     3.3    23.9    -      -       +      +
      5C  ILE*     3.5    26.7    -      -       +      -
      1D  ARG      4.2    14.1    -      -       -      +
      2D  MET*     3.1    16.3    +      -       +      +
      4D  GLN*     1.3    76.1    -      -       -      +
      6D  GLU*     1.3    58.1    +      -       -      +
      7D  ASP      3.1     0.2    -      -       -      -
      8D  LYS*     5.1     0.4    -      -       -      -
      9D  LEU*     3.0    27.0    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
      1C  ARG*     4.5     2.6    -      -       +      +
      4C  GLN*     4.0     8.0    +      -       -      +
      5C  ILE*     3.0    40.9    +      -       +      +
      8C  LYS*     3.6    15.1    -      -       -      +
      2D  MET      3.7     4.5    +      -       -      +
      3D  LYS*     3.3     8.6    +      -       +      +
      5D  ILE*     1.3    77.3    -      -       -      +
      7D  ASP*     1.3    60.4    +      -       -      +
      8D  LYS      3.5     0.2    -      -       -      -
      9D  LEU*     2.8    26.7    -      -       -      +
     10D  GLU*     3.0    50.4    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
      3D  LYS*     2.6    44.0    +      -       -      +
      4D  GLN*     3.1    11.2    -      -       -      +
      6D  GLU*     1.3    78.1    -      -       -      +
      8D  LYS*     1.3    63.5    +      -       +      +
      9D  LEU      3.3     0.7    -      -       -      -
     10D  GLU*     4.2     7.3    +      -       -      +
     11D  GLU*     3.5    21.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 8 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  GLU*     3.3    44.8    +      -       +      +
      7A  ASP*     4.8     1.8    +      -       -      -
      9A  LEU*     4.4    13.2    -      -       +      -
     10A  GLU*     2.9    48.1    +      -       -      +
     13A  LEU*     3.8    23.5    -      -       +      +
      4D  GLN*     2.7    19.0    +      -       +      +
      5D  ILE      4.3     4.0    -      -       -      +
      7D  ASP*     1.3    82.1    -      -       +      +
      9D  LEU*     1.4    47.9    +      -       -      +
     11D  GLU*     2.8    15.5    -      -       -      +
     12D  ILE*     2.7    38.8    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
      9A  LEU*     3.8    27.1    -      -       +      -
      5C  ILE*     4.2    25.4    -      -       +      +
      8C  LYS*     4.5     6.1    -      -       +      -
      9C  LEU*     4.2    10.3    -      -       +      -
     12C  ILE*     3.9    23.7    -      -       +      +
      5D  ILE*     3.0    21.7    +      -       +      +
      6D  GLU*     2.8    44.0    -      -       -      +
      7D  ASP      3.3     0.2    -      -       -      -
      8D  LYS*     1.4    72.0    -      -       -      +
     10D  GLU*     1.3    68.4    +      -       -      +
     11D  GLU      2.9     1.3    -      -       -      -
     12D  ILE*     3.0     6.0    +      -       +      +
     13D  LEU*     2.8    31.7    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
      8C  LYS*     4.3     9.8    +      -       -      -
      6D  GLU*     3.0    42.5    +      -       +      +
      7D  ASP*     4.2     8.0    +      -       -      +
      9D  LEU*     1.3    72.7    -      -       -      +
     11D  GLU*     1.4    50.6    +      -       -      +
     13D  LEU*     2.9    24.4    -      -       -      +
     14D  SER*     2.9    36.3    +      -       -      +
     17D  TYR*     5.6     0.2    -      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
     13A  LEU*     2.9    35.4    -      -       +      +
     17A  TYR*     4.4     8.8    +      -       -      -
      7D  ASP      3.5    15.2    +      -       -      +
      8D  LYS*     2.8    18.5    -      -       -      +
     10D  GLU*     1.4    75.6    -      -       -      +
     12D  ILE*     1.3    61.4    +      -       -      +
     13D  LEU      3.1     1.3    -      -       -      -
     14D  SER*     4.3     5.8    -      -       -      -
     15D  LYS*     3.1    44.5    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
      9A  LEU*     3.2    51.4    -      -       +      +
     12A  ILE*     3.8    18.2    -      -       +      -
     13A  LEU*     3.4    17.7    -      -       +      -
     16A  LEU*     3.6    22.6    -      -       +      +
     12C  ILE*     3.8    35.4    -      -       +      -
      8D  LYS      2.7    21.0    +      -       -      +
      9D  LEU*     3.0     9.4    +      -       +      +
     11D  GLU*     1.3    71.1    -      -       -      +
     13D  LEU*     1.3    68.4    +      -       -      +
     15D  LYS      3.6     0.5    +      -       -      -
     16D  LEU*     3.3    18.5    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
      8C  LYS*     4.1    19.5    -      -       +      +
     11C  GLU*     3.4    39.0    -      -       +      +
     12C  ILE*     4.3    17.0    -      -       +      -
     15C  LYS*     3.7     5.8    +      -       -      +
      9D  LEU*     2.8    15.5    +      -       +      +
     10D  GLU*     2.9    52.9    -      -       -      +
     12D  ILE*     1.3    74.5    -      -       -      +
     14D  SER*     1.3    62.3    +      -       -      +
     15D  LYS      3.0     1.0    +      -       -      -
     16D  LEU*     3.0     6.3    +      -       -      -
     17D  TYR*     3.0    47.0    +      -       +      +
----------------------------------------------------------
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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      2.9    19.9    +      -       -      -
     11D  GLU*     3.9     9.1    -      -       -      -
     13D  LEU*     1.3    71.5    -      -       -      +
     15D  LYS*     1.3    74.8    +      -       -      +
     17D  TYR*     3.0    24.7    +      -       -      +
     18D  HIS*     3.0    18.4    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     13A  LEU*     4.5     7.4    -      -       +      -
     16A  LEU*     3.7    22.2    -      -       +      -
     17A  TYR*     4.4    21.1    -      -       +      -
     20A  GLU*     3.7    28.5    -      -       -      +
     11D  GLU*     3.1    33.0    +      -       -      +
     12D  ILE      3.7     8.7    -      -       -      +
     13D  LEU      3.0     1.2    +      -       -      -
     14D  SER*     1.3    80.3    -      -       -      +
     16D  LEU*     1.3    50.9    +      -       -      +
     17D  TYR      2.9     4.0    -      -       -      -
     18D  HIS*     2.5    32.6    +      -       +      +
     19D  ILE*     2.7    21.3    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     16A  LEU*     4.0    12.8    -      -       +      -
     12C  ILE*     4.0    17.7    -      -       +      +
     15C  LYS*     3.3    44.5    -      -       +      +
     16C  LEU*     3.6    39.5    -      -       +      +
     19C  ILE*     3.8    14.6    -      -       +      +
     12D  ILE      3.3    10.0    +      -       -      +
     13D  LEU*     3.0     6.0    +      -       -      +
     15D  LYS*     1.3    79.0    -      -       -      +
     17D  TYR*     1.4    56.3    +      -       -      +
     19D  ILE*     3.5    24.0    -      -       +      +
     20D  GLU*     3.0    29.5    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     11C  GLU*     4.6     5.8    +      -       -      -
     15C  LYS*     2.8    33.0    -      -       -      -
     13D  LEU*     3.0    40.3    +      -       +      +
     14D  SER*     3.3    22.2    -      -       -      +
     15D  LYS      2.9     1.2    -      -       -      -
     16D  LEU*     1.4    75.6    -      -       -      +
     18D  HIS*     1.3    66.8    +      -       -      +
     20D  GLU*     2.8    38.4    -      -       -      +
     21D  ASN*     3.4     7.1    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     20A  GLU*     3.0    43.4    +      -       +      +
     27A  LYS*     6.0     0.7    -      -       -      -
     14D  SER      3.0     8.7    +      -       -      +
     15D  LYS*     2.5    20.2    +      -       +      +
     17D  TYR*     1.3    73.3    -      -       -      +
     19D  ILE*     1.3    61.5    +      -       -      +
     21D  ASN*     3.3     4.6    +      -       -      +
     22D  GLU*     2.9    43.3    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     16A  LEU*     4.2    12.8    -      -       +      +
     19A  ILE*     4.1    22.4    -      -       +      -
     20A  GLU*     4.1    26.0    -      -       +      +
     23A  LEU*     4.0    19.3    -      -       +      -
     19C  ILE*     4.0    24.5    -      -       +      -
     15D  LYS*     2.7    25.6    +      -       +      +
     16D  LEU*     3.5    28.5    -      -       +      +
     18D  HIS*     1.3    70.2    -      -       -      +
     20D  GLU*     1.4    63.9    +      -       -      +
     22D  GLU*     2.8    22.2    +      -       -      +
     23D  LEU*     3.0    22.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 20 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15C  LYS*     4.4    21.2    +      -       +      +
     18C  HIS*     6.1     5.4    -      -       +      -
     19C  ILE*     5.7     4.0    -      -       +      -
     22C  GLU*     4.8     7.1    -      -       -      +
     16D  LEU      3.0    21.0    +      -       -      +
     17D  TYR*     2.8    26.3    -      -       -      +
     19D  ILE*     1.4    73.9    -      -       -      +
     21D  ASN*     1.3    74.0    +      -       -      +
     23D  LEU*     3.5     9.0    +      -       -      +
     24D  ALA*     3.1    21.5    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     17D  TYR      4.4     4.5    -      -       -      +
     18D  HIS*     3.3     7.4    +      -       -      +
     19D  ILE      3.3     0.4    -      -       -      -
     20D  GLU*     1.3    96.5    +      -       -      +
     22D  GLU*     1.3    54.4    +      -       -      +
     23D  LEU      3.1     2.5    -      -       -      -
     24D  ALA*     3.2    12.9    -      -       +      +
     25D  ARG*     2.7    36.6    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     20A  GLU*     3.3    19.5    -      -       -      +
     23A  LEU*     3.0    38.7    -      -       +      +
     24A  ALA*     4.6     5.1    -      -       -      +
     27A  LYS*     3.6    26.5    +      -       -      +
     18D  HIS*     2.9    47.4    +      -       +      +
     19D  ILE*     2.8    17.5    +      -       -      +
     21D  ASN*     1.3    72.5    -      -       -      +
     23D  LEU*     1.3    52.6    +      -       -      +
     25D  ARG*     3.1     8.2    -      -       -      +
     26D  ILE*     2.6    41.4    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     23A  LEU*     4.0    24.2    -      -       +      -
     19C  ILE*     3.3    50.3    -      -       +      +
     22C  GLU*     3.9    21.3    -      -       +      +
     23C  LEU*     3.7    22.9    -      -       +      -
     26C  ILE*     3.8    16.7    -      -       +      +
     19D  ILE*     3.0    17.2    +      -       +      +
     20D  GLU*     3.7     8.3    -      -       -      +
     22D  GLU*     1.3    76.8    -      -       -      +
     24D  ALA*     1.3    54.7    +      -       -      +
     26D  ILE*     3.0     5.1    +      -       +      +
     27D  LYS*     2.7    41.4    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     20D  GLU      3.1     9.3    +      -       -      +
     21D  ASN*     2.9    27.2    +      -       +      +
     23D  LEU*     1.3    75.1    -      -       -      +
     25D  ARG*     1.3    58.6    +      -       -      +
     27D  LYS*     3.2    16.5    +      -       -      +
     28D  LYS*     2.8    43.3    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     27A  LYS*     2.9    48.4    -      -       +      +
     21D  ASN      2.7    12.6    +      -       -      +
     22D  GLU      3.1     9.9    -      -       -      +
     24D  ALA*     1.3    77.0    -      -       -      +
     26D  ILE*     1.4    58.8    +      -       -      +
     28D  LYS*     3.1     8.7    +      -       -      +
     29D  LEU*     2.8    42.8    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     23A  LEU*     3.5    52.0    -      -       +      +
     26A  ILE*     4.3    22.0    -      -       +      -
     27A  LYS*     4.3    16.4    -      -       +      -
     30A  LEU*     5.0     5.8    -      -       +      -
     26C  ILE*     3.9    24.0    -      -       +      -
     22D  GLU      2.6    30.4    +      -       -      +
     23D  LEU*     3.0    11.6    +      -       +      +
     25D  ARG*     1.4    71.9    -      -       -      +
     27D  LYS*     1.4    60.9    +      -       -      +
     29D  LEU*     3.3     8.6    +      -       +      +
     30D  LEU*     3.0    31.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 27 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18C  HIS*     5.4     2.2    +      -       -      -
     22C  GLU*     2.8    46.4    +      -       +      +
     25C  ARG*     4.6    24.9    -      -       +      +
     26C  ILE*     4.5    11.6    -      -       +      +
     29C  LEU*     4.1    22.2    -      -       +      +
     23D  LEU      2.7    22.4    +      -       -      +
     24D  ALA*     3.5    13.2    -      -       -      +
     26D  ILE*     1.4    70.1    -      -       -      +
     28D  LYS*     1.3    62.8    +      -       +      +
     30D  LEU*     3.1     9.2    +      -       -      +
     31D  GLY      2.7    36.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 28 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25C  ARG*     5.9     2.8    -      -       -      +
     24D  ALA*     2.8    31.8    +      -       +      +
     25D  ARG*     3.6     7.2    -      -       -      +
     27D  LYS*     1.3    83.9    -      -       -      +
     29D  LEU*     1.3    68.5    -      -       +      +
     31D  GLY*     2.8    23.8    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     26A  ILE      5.2     0.4    -      -       -      +
     27A  LYS*     3.4    50.3    -      -       +      +
     30A  LEU*     4.3    27.1    -      -       +      +
     31A  GLY*     5.5     4.5    -      -       -      -
     25D  ARG*     2.8    36.2    +      -       +      +
     26D  ILE*     3.4    12.3    -      -       +      +
     28D  LYS*     1.3    72.8    -      -       +      +
     30D  LEU*     1.3    61.1    +      -       -      +
     31D  GLY      3.7     0.2    +      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
     30A  LEU*     4.0    24.0    -      -       +      -
     26C  ILE*     4.3    21.1    -      -       +      +
     29C  LEU*     4.0    43.6    -      -       +      +
     30C  LEU*     3.9    37.5    -      -       +      -
     26D  ILE*     3.0    22.4    +      -       +      +
     27D  LYS      3.3     8.3    -      -       -      +
     28D  LYS      3.0     0.6    -      -       -      -
     29D  LEU*     1.3    77.3    -      -       -      +
     31D  GLY*     1.3    56.3    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     25C  ARG*     3.8    22.0    +      -       -      -
     29C  LEU*     4.8     5.9    -      -       -      +
     27D  LYS*     2.7    18.5    +      -       -      -
     28D  LYS*     2.8    25.1    +      -       -      -
     29D  LEU      3.7     0.4    +      -       -      -
     30D  LEU*     1.3    76.1    -      -       -      +
----------------------------------------------------------
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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