Contacts of the helix formed by residues 48 - 76 (chain C) in PDB entry 6WYG


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 LEU 48 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41C  PHE*     3.2    34.3    +      -       +      +
     46C  VAL*     4.0    12.6    -      -       +      +
     47C  ALA*     1.3    80.7    -      -       -      +
     49C  LYS*     1.3    64.2    +      -       -      +
     50C  ASN      3.3     2.9    -      -       -      -
     51C  PHE*     3.2    27.8    +      -       +      +
     52C  ALA      3.1    17.5    +      -       -      -
    167C  GLU*     3.7    27.8    -      -       +      +
    168C  TYR*     4.0    20.4    -      -       +      +
    171C  ASP*     3.4    25.4    -      -       +      +
    154D  ASN*     4.4     7.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 49 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41C  PHE      4.9     1.1    -      -       -      -
     42C  ASP*     6.1     1.1    -      -       -      +
     47C  ALA*     3.7     4.5    +      -       -      +
     48C  LEU*     1.3    74.3    -      -       -      +
     50C  ASN*     1.3    63.3    +      -       -      +
     52C  ALA*     3.3    10.0    -      -       -      +
     53C  LYS*     2.9    32.8    +      -       +      +
    171C  ASP*     3.6     3.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 50 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49C  LYS*     1.3    80.3    -      -       -      +
     51C  PHE*     1.3    58.0    +      -       -      +
     53C  LYS*     3.6    12.9    -      -       -      +
     54C  TYR*     2.8    30.8    +      -       -      +
    171C  ASP*     2.9    47.2    +      -       -      +
    172C  LYS*     4.4    13.1    -      -       -      +
    175C  LEU*     3.5    25.7    -      -       +      +
    176C  GLY*     4.2     9.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 51 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41C  PHE*     3.7    28.7    -      +       +      -
     48C  LEU*     3.3    23.8    -      -       +      +
     50C  ASN*     1.3    75.2    -      -       -      +
     52C  ALA*     1.3    63.3    +      -       -      +
     54C  TYR*     3.3     1.5    +      -       -      +
     55C  PHE*     2.9    38.7    +      +       -      -
     96C  GLY*     3.6    24.9    -      -       -      -
    100C  MET*     3.5    26.9    -      -       +      -
    155C  LEU*     4.3     9.9    -      -       +      -
    167C  GLU*     3.6    12.1    -      -       +      -
    170C  PHE*     3.6    19.7    -      +       -      -
    171C  ASP*     2.9    48.4    +      -       +      -
    175C  LEU*     3.6    15.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 52 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38C  SER*     3.2    38.8    +      -       -      +
     41C  PHE*     3.8    10.6    -      -       +      +
     42C  ASP*     4.3     9.4    -      -       +      +
     48C  LEU      3.1     9.3    +      -       -      +
     49C  LYS*     3.3    13.9    -      -       -      +
     51C  PHE*     1.3    80.0    -      -       -      +
     53C  LYS*     1.3    57.8    +      -       +      +
     56C  LEU*     2.9    27.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 53 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49C  LYS*     2.9    24.0    +      -       +      +
     50C  ASN*     3.3    16.1    +      -       +      +
     52C  ALA*     1.3    75.6    -      -       +      +
     54C  TYR*     1.3    64.9    +      -       -      +
     56C  LEU*     3.8     5.4    -      -       -      +
     57C  HIS*     2.9    26.3    +      -       -      +
    175C  LEU      6.0     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 54 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34C  TYR*     5.9     0.4    -      +       -      -
     50C  ASN      2.8    21.2    +      -       -      +
     51C  PHE      3.3     4.2    +      -       -      +
     53C  LYS*     1.3    72.6    -      -       -      +
     55C  PHE*     1.3    86.0    +      +       -      +
     57C  HIS*     3.6     6.7    -      +       -      +
     58C  GLN*     3.0    57.5    +      -       +      +
    100C  MET*     4.1    14.4    -      -       +      -
    147C  GLU*     2.6    38.5    +      -       -      +
    148C  LEU*     3.7    17.8    -      -       +      +
    151C  HIS*     3.7    14.8    -      +       -      -
    175C  LEU*     4.1    25.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 55 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34C  TYR*     3.6    33.8    -      +       -      +
     37C  MET*     3.9    20.0    -      -       +      -
     38C  SER*     3.7    19.5    -      -       -      +
     41C  PHE*     3.5    37.5    -      +       -      -
     51C  PHE*     2.9    30.9    +      +       -      +
     54C  TYR*     1.3    95.1    -      +       -      +
     56C  LEU*     1.3    60.9    +      -       -      +
     58C  GLN*     3.4     2.7    +      -       +      +
     59C  SER*     2.9    27.4    +      -       -      -
     99C  ALA*     3.6    26.0    -      -       +      -
    100C  MET*     4.1    15.7    -      -       +      -
    103C  ALA*     4.3     7.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 56 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35C  LEU*     4.0    24.9    -      -       +      -
     38C  SER*     3.5    16.5    -      -       -      +
     39C  TYR*     4.1    18.2    -      -       +      +
     52C  ALA      2.9    19.3    +      -       -      +
     53C  LYS*     3.8     5.6    -      -       -      +
     55C  PHE*     1.3    73.5    -      -       -      +
     57C  HIS*     1.3    65.6    +      -       -      +
     59C  SER*     3.1     7.0    +      -       -      +
     60C  HIS*     3.0    52.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 57 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53C  LYS      2.9    17.4    +      -       -      +
     54C  TYR*     3.6     7.0    -      +       -      +
     56C  LEU*     1.3    76.3    -      -       -      +
     58C  GLN*     1.3    84.5    +      -       -      +
     60C  HIS*     3.0    14.1    +      -       -      +
     61C  GLU*     2.9    30.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 58 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34C  TYR*     4.0    25.7    +      -       +      -
     54C  TYR*     3.0    45.3    +      -       +      +
     55C  PHE*     3.8     4.5    -      -       -      +
     56C  LEU      3.3     0.2    -      -       -      -
     57C  HIS*     1.3    91.1    -      -       -      +
     59C  SER*     1.3    56.6    +      -       -      +
     61C  GLU*     3.3     9.2    +      -       -      +
     62C  GLU*     2.9    34.8    +      -       -      +
    107C  GLU*     4.4    11.8    -      -       -      +
    144C  ALA*     5.1     8.7    -      -       -      +
    147C  GLU*     3.9    17.8    +      -       -      -
    148C  LEU*     6.0     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 59 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31C  SER*     3.0    41.6    +      -       -      +
     34C  TYR*     3.5    19.5    -      -       -      +
     35C  LEU*     3.6    19.0    -      -       -      +
     55C  PHE      2.9    14.5    +      -       -      -
     56C  LEU*     3.3    12.1    -      -       -      -
     57C  HIS      3.0     0.4    -      -       -      -
     58C  GLN*     1.3    78.1    -      -       -      +
     60C  HIS*     1.3    70.4    +      -       -      +
     62C  GLU      3.4     1.0    +      -       -      -
     63C  ARG*     3.0    10.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 60 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56C  LEU*     3.0    51.6    +      -       +      +
     57C  HIS*     3.0    11.9    +      -       +      +
     59C  SER*     1.3    83.1    -      -       -      +
     61C  GLU*     1.3    58.5    +      -       -      +
     63C  ARG*     3.3     8.5    +      -       +      +
     64C  GLU*     2.9    27.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 61 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57C  HIS*     2.9    28.0    +      -       +      +
     58C  GLN*     3.7    11.4    -      -       -      +
     59C  SER      3.2     0.2    -      -       -      -
     60C  HIS*     1.3    75.3    -      -       -      +
     62C  GLU*     1.3    67.4    +      -       +      +
     64C  GLU*     3.2     7.3    +      -       -      +
     65C  HIS*     3.0    36.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 62 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27C  GLU*     2.7    30.3    -      -       -      +
     30C  ALA*     3.5    17.8    -      -       +      +
     31C  SER*     3.7    22.4    -      -       -      +
     34C  TYR*     3.7    21.3    -      -       +      -
     58C  GLN*     2.9    21.6    +      -       -      +
     61C  GLU*     1.3    78.7    -      -       -      +
     63C  ARG*     1.3    61.9    +      -       -      +
     65C  HIS*     3.0     7.5    +      -       -      +
     66C  ALA*     2.9    22.7    +      -       -      +
    107C  GLU*     3.4     7.6    -      -       -      +
    110C  VAL*     4.8     2.8    -      -       -      +
    201C   FE      2.7     8.6    -      -       -      -
    202C   FE      2.1    28.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 63 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28C  LEU*     4.7    14.1    -      -       +      -
     31C  SER*     3.8    14.9    -      -       -      +
     59C  SER      3.0    14.4    +      -       -      +
     60C  HIS*     3.5    12.1    -      -       +      +
     61C  GLU      3.3     0.2    -      -       -      -
     62C  GLU*     1.3    75.7    -      -       -      +
     64C  GLU*     1.3    57.8    +      -       -      +
     66C  ALA*     3.3     8.6    +      -       -      +
     67C  GLU*     2.9    46.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 64 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60C  HIS      2.9    13.8    +      -       -      +
     61C  GLU*     3.4    12.6    -      -       -      +
     62C  GLU      3.2     0.2    -      -       -      -
     63C  ARG*     1.3    77.0    -      -       -      +
     65C  HIS*     1.3    62.1    +      -       +      +
     67C  GLU*     3.3    12.7    +      -       -      +
     68C  LYS*     3.0    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 65 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27C  GLU*     4.0    10.3    -      -       -      +
     61C  GLU*     3.0    26.9    +      -       +      +
     62C  GLU*     3.0     8.2    +      -       -      +
     64C  GLU*     1.3    82.0    -      -       +      +
     66C  ALA*     1.3    61.8    +      -       -      +
     68C  LYS*     3.3    12.0    +      -       -      -
     69C  LEU*     3.0    11.5    +      -       -      +
    136C  HIS      3.7    19.1    -      -       -      -
    137C  TYR*     2.3    56.5    +      +       +      -
    140C  GLU*     4.3    18.4    -      -       +      -
    201C   FE      3.8    11.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 66 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24C  ILE*     4.1     7.1    -      -       +      +
     27C  GLU*     3.7    24.5    -      -       +      +
     28C  LEU*     3.7    33.4    -      -       +      +
     62C  GLU      2.9     9.3    +      -       -      +
     63C  ARG      3.3     8.7    +      -       -      +
     65C  HIS*     1.3    77.7    -      -       -      +
     67C  GLU*     1.3    62.2    +      -       +      +
     69C  LEU*     3.1     8.0    +      -       -      +
     70C  MET*     3.0    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 67 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28C  LEU*     6.4     0.9    -      -       +      -
     63C  ARG*     2.9    37.8    +      -       +      +
     64C  GLU*     3.3    10.7    +      -       -      +
     66C  ALA*     1.3    76.7    -      -       +      +
     68C  LYS*     1.3    57.2    +      -       -      +
     70C  MET*     3.3    18.2    +      -       -      +
     71C  LYS*     2.9    27.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 68 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64C  GLU      3.0    16.5    +      -       -      +
     65C  HIS*     3.7    15.0    -      -       -      +
     66C  ALA      3.2     0.2    -      -       -      -
     67C  GLU*     1.3    75.6    -      -       -      +
     69C  LEU*     1.3    59.2    +      -       -      +
     71C  LYS*     3.4    15.8    +      -       +      +
     72C  LEU*     2.9    27.2    +      -       -      +
    132C  PHE*     3.8    28.7    -      -       +      -
    136C  HIS*     3.5    39.0    +      -       +      -
    137C  TYR*     3.8     9.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 69 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20C  ILE*     4.0    27.3    -      -       +      +
     23C  GLN*     3.6    26.9    -      -       +      +
     24C  ILE*     3.4    23.3    -      -       +      +
     27C  GLU*     3.6    31.2    -      -       +      -
     65C  HIS      3.0     8.8    +      -       -      +
     66C  ALA*     3.1     3.1    +      -       -      +
     68C  LYS*     1.3    76.1    -      -       -      +
     70C  MET*     1.3    57.8    +      -       -      +
     72C  LEU*     3.1     5.1    +      -       +      +
     73C  GLN*     2.9    28.4    +      -       -      +
    132C  PHE*     3.9    20.4    -      -       +      -
    133C  ILE*     4.9     6.1    -      -       +      -
    137C  TYR*     3.2    28.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 70 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24C  ILE*     3.8    31.0    -      -       +      -
     28C  LEU*     5.4     6.5    -      -       -      -
     66C  ALA*     3.0    20.3    +      -       -      +
     67C  GLU*     3.6    20.2    -      -       -      +
     68C  LYS      3.3     0.2    -      -       -      -
     69C  LEU*     1.3    73.8    -      -       -      +
     71C  LYS*     1.3    66.8    +      -       -      +
     73C  GLN*     3.3     1.0    +      -       -      +
     74C  ASN*     3.1    21.3    +      -       -      +
     80C  ILE*     3.5    44.9    -      -       +      +
     82C  LEU*     4.2    16.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 71 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67C  GLU      2.9    14.2    +      -       -      +
     68C  LYS*     3.5    18.4    -      -       +      +
     70C  MET*     1.3    76.6    -      -       -      +
     72C  LEU*     1.3    57.3    +      -       -      +
     74C  ASN*     3.2     8.9    +      -       -      +
     75C  GLN*     2.8    46.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 72 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12C  TYR*     4.5     3.4    -      -       -      +
     20C  ILE*     4.1    19.1    -      -       +      -
     68C  LYS      2.9    17.4    +      -       -      +
     69C  LEU*     3.1     5.8    +      -       -      +
     71C  LYS*     1.3    76.9    -      -       -      +
     73C  GLN*     1.3    65.1    +      -       -      +
     75C  GLN*     3.1    17.2    +      -       +      +
     76C  ARG*     3.0    34.0    +      -       +      +
    128C  HIS*     3.6    31.9    -      -       +      +
    129C  LEU*     4.0    24.2    -      -       +      -
    132C  PHE*     3.6    35.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 73 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12C  TYR*     2.5    38.4    +      -       -      -
     17C  GLU*     3.0    38.1    +      -       -      +
     20C  ILE*     3.7     8.5    -      -       +      +
     21C  ASN*     3.0    31.3    +      -       -      +
     24C  ILE*     4.8     0.7    -      -       +      -
     69C  LEU      2.9    13.9    +      -       -      +
     70C  MET*     3.3     8.9    +      -       -      +
     72C  LEU*     1.3    77.2    -      -       -      +
     74C  ASN*     1.3    62.6    +      -       -      +
     76C  ARG*     3.2     5.4    +      -       -      +
     78C  GLY      3.0    38.0    +      -       -      +
     79C  ARG      3.6     3.4    +      -       -      +
     80C  ILE*     3.8    19.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 74 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8C  VAL*     4.4     6.2    -      -       -      +
     70C  MET      3.1    10.1    +      -       -      +
     71C  LYS*     3.7     8.6    -      -       -      +
     73C  GLN*     1.3    75.6    -      -       -      +
     75C  GLN*     1.3    63.3    +      -       -      +
     76C  ARG      3.2     0.7    +      -       -      -
     77C  GLY*     3.2    11.1    +      -       -      -
     78C  GLY      4.0     5.2    -      -       -      +
     79C  ARG*     3.9    19.1    +      -       -      +
     80C  ILE*     3.7    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 75 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8C  VAL*     4.2    12.3    -      -       -      +
     71C  LYS*     2.8    30.6    +      -       +      +
     72C  LEU*     3.1    34.0    +      -       +      +
     74C  ASN*     1.3    76.5    -      -       -      +
     76C  ARG*     1.3    63.9    +      -       +      +
     77C  GLY      3.7     0.3    +      -       -      -
    128C  HIS*     5.4     3.8    +      -       +      -
    132C  PHE*     5.3     4.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 76 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8C  VAL*     4.3     2.5    -      -       -      -
      9C  ARG*     3.4    25.8    -      -       -      +
     10C  GLN      2.9    29.2    +      -       -      +
     11C  ASN*     3.0    22.2    +      -       -      +
     12C  TYR*     3.6    40.2    -      -       +      +
     72C  LEU*     3.0    29.4    +      -       +      +
     73C  GLN      3.2     1.3    +      -       -      +
     74C  ASN      3.1     0.4    -      -       -      -
     75C  GLN*     1.3    82.8    -      -       -      +
     77C  GLY*     1.3    58.8    +      -       -      +
     78C  GLY      3.1     4.0    +      -       -      -
    126C  ASP*     3.0    30.4    +      -       -      -
    128C  HIS*     3.0    40.6    +      -       -      +
    129C  LEU*     3.7     5.7    -      -       -      +
----------------------------------------------------------
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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