Contacts of the helix formed by residues 2 - 25 (chain J) in PDB entry 6C4Z


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 LYS 2 (chain J).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16H  LYS*     5.3     4.2    -      -       +      +
     20H  LEU*     4.2    20.0    -      -       +      +
     23H  LYS*     6.5     0.7    -      -       +      -
      1J  SER*     1.3    76.9    +      -       -      +
      3J  LEU*     1.3    63.5    +      -       -      +
      5J  GLU*     3.5     8.9    +      -       -      +
      6J  LEU*     3.2    20.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 3 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20H  LEU*     4.1    28.6    -      -       +      +
     24H  TRP*     4.4    21.3    -      -       +      -
      3I  LEU*     4.1    33.9    -      -       +      -
      4I  LEU*     5.0     9.0    -      -       +      +
      7I  LEU*     4.3    14.1    -      -       +      -
      1J  SER      3.3     5.5    -      -       -      +
      2J  LYS*     1.3    79.0    -      -       -      +
      4J  LEU*     1.3    57.8    +      -       +      +
      6J  LEU*     3.3    12.1    +      -       +      +
      7J  LEU*     3.0    44.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 4 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3I  LEU*     3.4    31.9    -      -       +      -
      1J  SER*     3.6    26.8    +      -       -      +
      2J  LYS      3.3     0.6    -      -       -      -
      3J  LEU*     1.3    75.0    -      -       +      +
      5J  GLU*     1.3    62.9    +      -       -      +
      7J  LEU*     3.5    13.4    +      -       +      +
      8J  ARG      3.2    17.7    +      -       -      -
     24K  TRP*     4.4     9.0    -      -       +      -
     18L  ILE*     4.6     2.0    -      -       +      +
     21L  LEU*     4.1    34.1    -      -       +      +
     22L  GLU*     3.6    28.8    -      -       +      +
     25L  GLY*     4.1    22.4    -      -       -      +
     26L  NH2      4.6     1.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 5 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16H  LYS*     4.0    23.6    -      -       +      +
      1J  SER      3.4    10.5    +      -       -      +
      2J  LYS*     3.6    11.4    -      -       -      +
      3J  LEU      3.3     0.4    -      -       -      -
      4J  LEU*     1.3    75.4    -      -       -      +
      6J  LEU*     1.3    66.4    +      -       -      +
      8J  ARG*     3.4    22.1    +      -       -      +
      9J  LYS*     3.3    24.6    +      -       -      +
     22L  GLU*     4.1    10.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 6 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14G  LEU*     5.4     1.6    -      -       +      -
     18G  ILE*     6.0     1.3    -      -       +      -
     21G  LEU*     3.9    19.7    -      -       +      -
     13H  ALA*     3.8    24.9    -      -       -      +
     16H  LYS*     4.5    15.8    -      -       +      +
     17H  ALA*     4.2    13.5    -      -       +      +
     20H  LEU*     3.8    26.5    -      -       +      -
      7I  LEU*     4.2    12.1    -      -       +      -
      2J  LYS      3.2    11.4    +      -       -      +
      3J  LEU*     3.3    18.2    -      -       +      +
      5J  GLU*     1.3    78.4    -      -       -      +
      7J  LEU*     1.3    65.0    +      -       -      +
      9J  LYS*     3.2     7.0    +      -       -      +
     10J  LEU*     3.1    33.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 7 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3I  LEU*     4.4    15.0    -      -       +      +
      6I  LEU*     4.0    24.7    -      -       +      -
      7I  LEU*     3.5    35.0    -      -       +      -
     10I  LEU*     4.0    17.2    -      -       +      +
      3J  LEU*     3.0    32.1    +      -       +      +
      4J  LEU*     3.7    25.1    -      -       +      +
      5J  GLU      3.3     0.2    -      -       -      -
      6J  LEU*     1.3    72.1    -      -       +      +
      8J  ARG*     1.3    68.2    +      -       -      +
     10J  LEU*     2.7    22.4    +      -       -      +
     11J  GLY      2.9    10.0    +      -       -      -
     18L  ILE*     3.9    15.7    -      -       +      +
     21L  LEU*     5.6     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 8 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16H  LYS*     5.1     4.2    -      -       -      +
      4J  LEU      3.2     5.5    +      -       -      +
      5J  GLU*     3.4    25.4    +      -       -      +
      7J  LEU*     1.3    76.1    -      -       -      +
      9J  LYS*     1.3    84.8    +      -       -      +
     11J  GLY*     3.1     2.6    +      -       -      -
     12J  GLU*     2.8    48.7    +      -       +      +
     15L  HIS*     4.5     8.1    +      -       +      -
     18L  ILE*     3.5    16.2    -      -       +      +
     19L  GLU*     4.7    19.7    -      -       +      +
     22L  GLU*     2.3    42.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 9 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9H  LYS*     4.5    10.3    -      -       +      +
     12H  GLU*     3.1    44.9    +      -       +      +
     13H  ALA*     4.1    20.0    -      -       +      +
     16H  LYS*     4.1    22.4    -      -       +      +
      5J  GLU      3.3    10.9    +      -       -      +
      6J  LEU*     3.2    10.2    +      -       -      +
      7J  LEU      2.8     4.2    +      -       -      -
      8J  ARG*     1.3    97.0    -      -       -      +
     10J  LEU*     1.3    56.3    +      -       -      +
     12J  GLU*     3.2    26.0    +      -       -      +
     13J  ALA*     2.9    28.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 10 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14G  LEU*     3.7    35.9    -      -       +      -
     18G  ILE*     4.4    11.7    -      -       +      -
     13H  ALA*     4.2     8.3    -      -       +      -
      7I  LEU*     3.3    33.9    -      -       +      -
     10I  LEU*     4.2    30.0    -      -       +      +
     11I  GLY      5.3     0.9    -      -       -      +
     14I  LEU*     3.8    15.4    -      -       +      +
      6J  LEU*     3.1    25.4    +      -       +      +
      7J  LEU*     2.7    12.6    +      -       -      +
      9J  LYS*     1.3    71.0    -      -       -      +
     11J  GLY*     1.3    54.9    +      -       -      +
     13J  ALA*     3.4     4.6    +      -       -      +
     14J  LEU*     2.9    31.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 11 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10I  LEU*     4.6     4.4    -      -       -      +
      7J  LEU      2.9    11.6    +      -       -      -
      8J  ARG      3.4     4.3    -      -       -      -
     10J  LEU*     1.3    76.8    -      -       -      +
     12J  GLU*     1.3    56.3    +      -       -      +
     14J  LEU*     3.5     5.5    +      -       -      +
     15J  HIS*     2.9    30.8    +      -       -      +
     11L  GLY      5.1     0.9    -      -       -      +
     14L  LEU*     5.7     1.1    -      -       -      -
     15L  HIS*     4.2    14.9    +      -       -      +
     18L  ILE*     4.2    20.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 12 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9H  LYS*     3.4    33.5    +      -       +      +
      8J  ARG*     2.8    45.3    +      -       -      +
      9J  LYS*     3.2    32.9    +      -       -      +
     11J  GLY*     1.3    69.6    -      -       -      +
     13J  ALA*     1.3    65.3    +      -       -      +
     15J  HIS*     3.5     9.3    +      -       -      +
     16J  LYS*     3.1    23.4    +      -       -      +
     15L  HIS*     3.5    23.1    -      -       +      +
     19L  GLU*     5.4     0.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 13 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6H  LEU*     3.7     9.0    -      -       +      +
      9H  LYS*     4.1    21.7    -      -       +      +
     10H  LEU*     3.9    29.2    -      -       +      -
     13H  ALA*     5.4     1.1    -      -       +      -
     14I  LEU*     4.2     8.3    -      -       +      -
      9J  LYS      2.9    17.0    +      -       -      +
     10J  LEU*     3.7     6.3    -      -       -      +
     12J  GLU*     1.3    73.3    -      -       -      +
     14J  LEU*     1.3    62.3    +      -       -      +
     16J  LYS*     3.3     2.5    +      -       -      +
     17J  ALA*     2.9    29.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 14 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10I  LEU*     4.1    16.4    -      -       +      +
     13I  ALA*     3.9    18.8    -      -       +      -
     14I  LEU*     3.8    35.1    -      -       +      +
     17I  ALA*     4.4    11.0    -      -       +      -
     10J  LEU      2.9    16.6    +      -       -      +
     11J  GLY      3.8     4.7    -      -       -      +
     13J  ALA*     1.3    72.0    -      -       -      +
     15J  HIS*     1.3    66.4    +      -       -      +
     17J  ALA*     3.3     3.1    +      -       -      +
     18J  ILE*     3.1    47.1    +      -       +      +
      6K  LEU*     5.0     1.6    -      -       +      -
     10K  LEU*     3.7    20.0    -      -       +      -
     11L  GLY*     5.7     2.0    -      -       -      -
     14L  LEU*     3.7    20.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 15 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11J  GLY      2.9    19.0    +      -       -      +
     12J  GLU*     3.5     9.4    -      -       -      +
     14J  LEU*     1.3    78.7    -      -       -      +
     16J  LYS*     1.3    63.6    +      -       -      +
     18J  ILE*     3.3    10.0    +      -       -      +
     19J  GLU*     2.6    56.6    +      -       +      +
      8L  ARG*     4.6     6.2    +      -       +      +
     11L  GLY*     4.3    12.4    +      -       -      +
     12L  GLU*     3.4    45.4    +      -       +      +
     15L  HIS*     4.9    17.7    -      +       +      -
----------------------------------------------------------
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Residues in contact with LYS 16 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2H  LYS      5.6     2.2    -      -       -      +
      5H  GLU*     5.0    11.9    -      -       +      +
      6H  LEU*     4.4    23.8    -      -       +      +
      9H  LYS*     5.4     4.3    -      -       +      -
     12J  GLU      3.1    16.9    +      -       -      +
     13J  ALA*     3.3     4.9    +      -       -      +
     15J  HIS*     1.3    75.0    -      -       +      +
     17J  ALA*     1.3    68.0    +      -       -      +
     19J  GLU*     2.8    26.4    +      -       -      +
     20J  LEU*     2.9    15.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 17 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6H  LEU*     4.1    13.6    -      -       +      +
     14I  LEU*     4.6     6.5    -      -       +      -
     17I  ALA*     4.0    18.8    -      -       +      -
     18I  ILE*     5.6     0.9    -      -       +      -
     21I  LEU*     3.9    23.9    -      -       +      +
     13J  ALA      2.9    17.1    +      -       -      +
     14J  LEU*     3.3     8.5    +      -       -      +
     16J  LYS*     1.3    75.4    -      -       -      +
     18J  ILE*     1.3    58.1    +      -       -      +
     20J  LEU*     3.4     4.8    +      -       -      +
     21J  LEU*     3.0    31.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 18 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17I  ALA*     5.2     1.3    -      -       +      -
     14J  LEU*     3.1    35.2    +      -       +      +
     15J  HIS*     3.7     6.7    -      -       -      +
     17J  ALA*     1.3    73.0    -      -       +      +
     19J  GLU*     1.3    62.2    +      -       -      +
     21J  LEU*     3.2    18.9    +      -       +      +
     22J  GLU*     2.9    27.2    +      -       -      +
      6K  LEU*     5.1     5.6    -      -       +      -
     10K  LEU*     4.0    31.0    -      -       +      -
      4L  LEU*     4.7     2.2    -      -       +      +
      7L  LEU*     3.8    18.4    -      -       +      +
      8L  ARG*     3.5    36.1    -      -       +      +
     11L  GLY*     4.2    11.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 19 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5H  GLU*     5.6     2.4    -      -       -      +
     15J  HIS*     2.6    55.9    +      -       +      +
     16J  LYS*     2.8    17.6    +      -       -      +
     18J  ILE*     1.3    71.9    -      -       -      +
     20J  LEU*     1.3    60.6    +      -       -      +
     22J  GLU*     3.3     9.7    +      -       -      +
     23J  LYS*     3.0    22.2    +      -       -      +
      8L  ARG*     4.7    18.3    +      -       +      +
     12L  GLU*     5.2     0.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 20 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2H  LYS*     3.8    31.2    -      -       +      +
      3H  LEU*     3.9    27.4    -      -       +      +
      6H  LEU*     3.9    21.5    -      -       +      -
     21I  LEU*     3.7    17.7    -      -       +      -
     16J  LYS      2.9    11.1    +      -       -      +
     17J  ALA      3.5     9.0    -      -       -      +
     19J  GLU*     1.3    73.9    -      -       -      +
     21J  LEU*     1.3    65.5    +      -       -      +
     23J  LYS*     3.0    12.9    +      -       +      +
     24J  TRP*     2.9    61.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 21 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17I  ALA*     4.3    15.7    -      -       +      +
     20I  LEU*     3.5    40.6    -      -       +      -
     21I  LEU*     3.8    26.4    -      -       +      +
     24I  TRP*     3.4    22.9    -      -       +      -
     17J  ALA      3.0    18.9    +      -       -      +
     18J  ILE*     3.2    18.4    +      -       +      +
     20J  LEU*     1.3    74.9    -      -       -      +
     22J  GLU*     1.3    53.7    +      -       -      +
     24J  TRP*     5.0     0.9    -      -       -      -
     25J  GLY*     2.8    33.3    +      -       -      -
      6K  LEU*     4.1    19.7    -      -       +      -
      4L  LEU*     3.7    11.2    -      -       +      +
      7L  LEU*     5.7     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 22 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18J  ILE      2.9    12.2    +      -       -      +
     19J  GLU*     3.3     8.3    -      -       -      +
     21J  LEU*     1.3    76.4    -      -       -      +
     23J  LYS*     1.3    62.6    +      -       -      +
     25J  GLY      3.0    18.4    -      -       -      +
      4L  LEU*     4.0    26.4    -      -       +      +
      8L  ARG*     3.2    39.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 23 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2H  LYS*     4.9    13.1    -      -       +      +
     19J  GLU      3.0    12.4    +      -       -      +
     20J  LEU*     3.0    19.5    +      -       +      +
     22J  GLU*     1.3    76.4    -      -       -      +
     24J  TRP*     1.3    76.3    +      -       +      +
     25J  GLY      3.8     2.8    -      -       -      +
      8L  ARG*     5.2     0.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 24 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4G  LEU*     4.4    17.5    -      -       +      -
      3H  LEU*     4.8    13.2    -      -       +      -
     21I  LEU*     3.5    48.5    -      -       +      -
     24I  TRP*     4.6    17.9    -      +       +      +
     25I  GLY*     3.8    19.7    -      -       -      -
     20J  LEU*     2.9    50.5    +      -       +      +
     21J  LEU      4.4     1.1    -      -       -      +
     23J  LYS*     1.3    86.6    -      -       +      +
     25J  GLY*     1.3    63.9    +      -       -      +
     26J  NH2      3.9     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 25 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24I  TRP*     3.4    21.9    -      -       -      -
     21J  LEU      2.8    24.5    +      -       -      -
     22J  GLU      3.0    13.9    +      -       -      +
     23J  LYS      3.8     3.8    -      -       -      +
     24J  TRP*     1.3    75.3    -      -       -      +
     26J  NH2      1.3    46.2    +      -       -      -
      1L  SER*     5.7     1.0    -      -       -      -
      4L  LEU*     3.6    13.9    -      -       -      +
----------------------------------------------------------
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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