Contacts of the helix formed by residues 45 - 69 (chain C) in PDB entry 1JT0


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with THR 45 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40C  TYR*     4.2     4.0    -      -       -      -
     43C  PHE*     4.6     3.0    -      -       -      +
     44C  LYS*     1.3    98.3    +      -       +      +
     46C  LYS*     1.3    67.4    +      -       -      +
     47C  GLU*     3.7     9.4    -      -       -      +
     48C  ASN*     2.9    27.8    +      -       -      +
     49C  LEU*     2.8    22.1    +      -       -      +
     26E    G      3.5    28.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 46 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15C  PHE*     4.1    13.1    -      -       +      -
     20C  TYR*     3.2    50.4    +      -       +      +
     21C  ASN*     4.1     8.5    +      -       -      +
     23C  THR      2.7    28.3    +      -       -      +
     24C  THR      5.6     0.2    -      -       -      -
     25C  THR*     4.4    14.4    -      -       +      +
     28C  ILE*     5.8     2.2    -      -       +      -
     39C  LEU*     6.4     1.3    -      -       -      -
     40C  TYR*     4.3     2.6    +      -       -      -
     45C  THR*     1.3    70.7    -      -       -      +
     47C  GLU*     1.3    63.3    +      -       -      +
     49C  LEU*     3.0    14.9    +      -       +      +
     50C  PHE*     2.9    22.3    +      -       -      +
     25E    G      2.9    38.5    +      -       -      +
     26E    G      2.8    17.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 47 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20C  TYR*     3.3    13.9    +      -       -      +
     45C  THR*     3.7    10.9    -      -       -      +
     46C  LYS*     1.3    79.9    -      -       -      +
     48C  ASN*     1.3    68.4    +      -       -      +
     50C  PHE*     3.0     7.4    +      -       -      +
     51C  LEU*     3.0    33.2    +      -       +      +
    102C  PHE*     3.5    25.1    -      -       +      -
    106C  TYR*     4.4    16.0    -      -       +      -
    112C  ILE*     3.7    23.4    -      -       -      +
    115C  LYS*     4.9     5.2    +      -       -      -
     26E    G      4.8     1.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 48 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43C  PHE*     5.2     1.6    -      -       -      -
     44C  LYS*     3.9    31.4    +      -       +      +
     45C  THR*     2.9    24.6    +      -       -      +
     47C  GLU*     1.3    89.7    +      -       -      +
     49C  LEU*     1.3    64.7    +      -       -      +
     51C  LEU*     4.0    16.9    -      -       -      +
     52C  GLU*     3.1    26.7    +      -       -      +
    115C  LYS*     5.3     4.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 49 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7C  ILE*     4.9     2.2    -      -       +      -
      8C  LEU*     3.8     6.1    -      -       +      -
     11C  ALA*     4.0    12.3    -      -       +      -
     15C  PHE*     4.7     5.4    -      -       +      -
     25C  THR*     6.4     0.7    -      -       +      -
     28C  ILE*     3.9    27.1    -      -       +      -
     39C  LEU*     4.3    19.7    -      -       +      -
     43C  PHE*     3.6    39.9    -      -       +      -
     45C  THR      2.8    11.5    +      -       -      +
     46C  LYS*     3.0    18.1    +      -       +      +
     48C  ASN*     1.3    74.5    -      -       -      +
     50C  PHE*     1.3    71.3    +      -       -      +
     52C  GLU*     3.6     1.6    -      -       -      +
     53C  ILE*     3.2    36.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 50 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15C  PHE*     3.8    37.0    -      +       +      -
     20C  TYR*     3.8    15.5    -      +       +      -
     46C  LYS      2.9    12.0    +      -       -      +
     47C  GLU      3.2     9.0    -      -       -      +
     49C  LEU*     1.3    76.5    -      -       -      +
     51C  LEU*     1.3    56.1    +      -       -      +
     53C  ILE*     2.8    29.6    +      -       +      +
     54C  LEU*     3.0    47.9    +      -       +      +
     95C  LEU*     4.7     5.4    -      -       +      -
     98C  ALA*     3.6    33.4    -      -       +      -
     99C  ILE*     4.0    11.2    -      -       +      -
    102C  PHE*     3.5    42.4    -      +       +      -
    116C  MET*     5.2     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 51 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47C  GLU*     3.0    22.7    +      -       +      +
     48C  ASN*     4.3    19.7    -      -       -      +
     50C  PHE*     1.3    75.1    -      -       +      +
     52C  GLU*     1.3    68.9    +      -       -      +
     54C  LEU*     3.4    24.5    +      -       +      +
     55C  ASN*     3.1    32.9    +      -       -      +
    102C  PHE*     4.8     9.6    -      -       +      -
    112C  ILE*     4.5    10.8    -      -       +      -
    115C  LYS*     3.7    39.5    -      -       +      +
    116C  MET*     4.5    14.1    -      -       -      -
    119C  LEU*     5.2     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 52 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4C  LYS*     3.3    33.3    +      -       -      -
      8C  LEU*     4.3     3.8    -      -       +      +
     42C  HIS      5.0     0.5    -      -       -      +
     43C  PHE*     3.5    24.3    -      -       -      -
     48C  ASN      3.1    19.3    +      -       -      +
     49C  LEU*     3.6     4.9    -      -       -      +
     50C  PHE      3.0     0.2    +      -       -      -
     51C  LEU*     1.3    78.8    -      -       -      +
     53C  ILE*     1.3    54.8    -      -       -      +
     55C  ASN*     3.0     4.2    +      -       -      +
     56C  ILE*     2.8    60.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 53 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8C  LEU*     3.3    40.6    -      -       +      +
     11C  ALA*     4.0    11.2    -      -       +      -
     12C  LYS*     4.1    21.5    -      -       +      +
     15C  PHE*     4.4     9.9    -      -       +      -
     49C  LEU*     3.3    28.0    -      -       +      +
     50C  PHE*     2.8    10.1    +      -       +      +
     52C  GLU*     1.3    73.1    -      -       -      +
     54C  LEU*     1.3    68.3    +      -       +      +
     56C  ILE*     3.7     7.8    -      -       +      +
     57C  GLU*     2.7    33.6    +      -       -      +
     95C  LEU*     4.1    22.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 54 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50C  PHE*     3.0    60.1    +      -       +      +
     51C  LEU*     3.8    24.0    -      -       +      +
     52C  GLU      3.3     0.2    +      -       -      -
     53C  ILE*     1.3    76.8    -      -       +      +
     55C  ASN*     1.3    53.8    +      -       -      +
     57C  GLU*     3.2     5.5    -      -       -      +
     58C  GLU*     2.7    37.7    +      -       -      +
     92C  TYR*     4.0     7.3    -      -       +      +
     95C  LEU*     4.2    14.8    -      -       +      -
     99C  ILE*     4.3    21.1    -      -       +      -
    116C  MET*     4.1    13.9    -      -       -      -
    119C  LEU*     3.5    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 55 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51C  LEU*     3.1    21.7    +      -       -      +
     52C  GLU*     3.0     9.7    +      -       -      +
     54C  LEU*     1.3    74.5    -      -       -      +
     56C  ILE*     1.3    66.6    +      -       +      +
     57C  GLU      3.0     2.5    +      -       -      -
     58C  GLU*     3.4     1.4    +      -       -      +
     59C  SER*     3.1    24.3    +      -       -      -
    118C  LYS*     3.5    35.6    +      -       -      +
    119C  LEU*     3.7    22.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 56 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8C  LEU*     3.8    27.4    -      -       +      -
     52C  GLU*     2.8    51.0    +      -       +      +
     53C  ILE*     3.5     9.9    -      -       -      +
     55C  ASN*     1.3    72.9    -      -       +      +
     57C  GLU*     1.3    61.5    +      -       -      +
     59C  SER*     2.7    20.9    +      -       -      +
     60C  LYS*     2.8    48.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 57 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12C  LYS*     2.3    46.1    +      -       -      +
     53C  ILE*     2.7    25.3    +      -       +      +
     54C  LEU*     3.2     5.6    -      -       -      +
     56C  ILE*     1.3    80.8    -      -       -      +
     58C  GLU*     1.3    68.5    +      -       -      +
     59C  SER      2.9     3.0    +      -       -      -
     60C  LYS*     2.9    26.6    +      -       -      +
     61C  TRP*     3.0    10.4    +      -       -      +
     91C  TYR*     3.0    23.5    -      -       -      +
     92C  TYR*     3.5    29.4    -      -       -      +
     95C  LEU*     4.2     8.1    -      -       +      -
    699C  SO4      4.4     4.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 58 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54C  LEU      2.7    19.0    +      -       -      +
     55C  ASN*     3.9     3.4    -      -       -      +
     57C  GLU*     1.3    72.3    -      -       -      +
     59C  SER*     1.3    65.0    +      -       -      +
     61C  TRP*     3.3     7.7    -      -       -      +
     62C  GLN*     3.1    22.3    +      -       -      +
     92C  TYR*     3.9    14.7    -      -       +      -
    119C  LEU*     3.7    25.3    -      -       +      +
    122C  LYS*     2.9    52.6    +      -       +      +
    123C  TYR*     3.6    29.5    -      -       +      -
----------------------------------------------------------
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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
----------------------------------------------------------
     55C  ASN      3.1    11.3    +      -       -      -
     56C  ILE*     2.7    28.1    +      -       -      +
     57C  GLU      2.9     1.8    +      -       -      -
     58C  GLU*     1.3    79.1    +      -       -      +
     60C  LYS*     1.3    62.2    +      -       -      +
     61C  TRP      2.9     4.3    -      -       -      -
     62C  GLN*     2.8    24.6    +      -       -      +
     63C  GLU*     2.9    16.6    +      -       -      +
    122C  LYS*     5.5     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 60 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56C  ILE*     2.8    44.4    +      -       -      +
     57C  GLU*     2.9    13.6    +      -       -      +
     59C  SER*     1.3    83.0    +      -       -      +
     61C  TRP*     1.3    60.7    +      -       -      +
     63C  GLU*     3.6    12.8    +      -       -      +
     64C  GLN*     3.2    16.1    +      -       -      +
     91C  TYR*     3.5    40.6    -      -       +      +
    699C  SO4      3.1    35.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 61 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57C  GLU      3.0     9.8    +      -       -      +
     58C  GLU*     3.3    16.8    -      -       -      +
     59C  SER      2.9     0.4    -      -       -      -
     60C  LYS*     1.3    77.5    -      -       -      +
     62C  GLN*     1.3    73.9    +      -       +      +
     64C  GLN*     2.8    44.5    +      -       +      +
     65C  TRP*     2.9    20.4    +      -       +      +
     82C  TYR*     3.1    41.0    +      +       -      -
     85C  LEU*     3.1    44.0    -      -       +      -
     86C  SER*     3.8    13.5    -      -       -      -
     89C  THR*     3.5    24.2    -      -       +      -
     91C  TYR*     3.9    16.3    -      -       +      +
     93C  TYR*     4.6     2.9    -      +       -      -
    123C  TYR*     3.3    44.4    -      +       -      +
----------------------------------------------------------
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Residues in contact with GLN 62 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58C  GLU*     3.1    11.2    +      -       -      +
     59C  SER*     2.8    11.3    +      -       -      +
     61C  TRP*     1.3    88.7    -      -       +      +
     63C  GLU*     1.3    60.6    +      -       -      +
     65C  TRP*     3.8     9.9    -      -       +      +
     66C  LYS*     3.0    40.4    +      -       +      +
    122C  LYS*     2.8    37.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 63 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59C  SER*     2.9    14.8    +      -       -      +
     60C  LYS*     3.7    14.6    -      -       -      +
     62C  GLN*     1.3    76.7    -      -       -      +
     64C  GLN*     1.3    63.1    +      -       -      +
     66C  LYS*     3.2    28.9    +      -       -      +
     67C  LYS*     3.2    22.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 64 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60C  LYS      3.2     7.4    +      -       -      +
     61C  TRP*     2.8    28.7    +      -       -      +
     63C  GLU*     1.3    78.6    -      -       -      +
     65C  TRP*     1.3    54.8    +      -       -      +
     67C  LYS*     3.1     8.1    +      -       -      +
     68C  GLU*     2.8    43.6    +      -       -      +
     85C  LEU*     3.2    14.9    -      -       +      +
     89C  THR*     2.8    30.1    +      -       -      -
     90C  GLU*     3.1    22.9    -      -       -      +
     91C  TYR*     3.5    14.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 65 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61C  TRP*     2.9    24.0    +      -       +      +
     62C  GLN*     3.8    15.3    -      -       +      +
     64C  GLN*     1.3    75.1    -      -       -      +
     66C  LYS*     1.3    66.0    +      -       -      +
     68C  GLU*     3.8     6.3    -      -       +      -
     69C  GLN*     2.9    82.0    +      -       +      +
     78C  LYS*     3.9    13.5    -      -       +      -
     81C  LEU*     3.7    24.0    -      -       +      -
     82C  TYR*     3.6    57.2    -      +       +      -
     85C  LEU*     4.8     8.4    -      -       +      +
    126C  ALA*     4.7    10.8    -      -       +      +
    130C  ILE*     4.3    20.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 66 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62C  GLN*     3.0    34.8    +      -       +      +
     63C  GLU*     3.2    33.3    +      -       -      +
     65C  TRP*     1.3    77.9    -      -       -      +
     67C  LYS*     1.3    61.7    +      -       -      +
     69C  GLN*     3.6    21.5    +      -       -      +
     70C  ILE*     3.6    17.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 67 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63C  GLU      3.2     8.2    +      -       -      +
     64C  GLN*     3.1     9.9    +      -       -      +
     66C  LYS*     1.3    80.0    -      -       -      +
     68C  GLU*     1.3    69.4    +      -       +      +
     70C  ILE*     3.6    18.2    -      -       -      +
     71C  LYS*     4.3     4.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 68 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64C  GLN*     2.8    38.7    +      -       -      +
     65C  TRP*     3.8    15.9    -      -       +      -
     67C  LYS*     1.3    83.1    -      -       +      +
     69C  GLN*     1.3    61.0    +      -       -      +
     70C  ILE      3.0     6.6    +      -       -      -
     71C  LYS*     3.3    15.3    +      -       -      +
     81C  LEU*     3.1    27.5    -      -       +      +
     85C  LEU*     3.9    30.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 69 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65C  TRP*     2.9    67.5    +      -       +      +
     66C  LYS*     3.6    25.5    +      -       -      +
     68C  GLU*     1.3    74.8    -      -       -      +
     70C  ILE*     1.3    69.0    +      -       +      +
     71C  LYS      3.4     0.2    -      -       -      -
     72C  ALA*     3.4    19.6    -      -       -      +
     78C  LYS*     3.4    30.1    +      -       +      -
     81C  LEU*     4.3     3.1    -      -       -      -
    130C  ILE*     5.0     2.4    -      -       -      +
----------------------------------------------------------
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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