Contacts of the helix formed by residues 71 - 93 (chain H) in PDB entry 1R5I


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 GLU 71 (chain H).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13H  LYS*     5.2    12.8    +      -       +      +
     69H  LEU*     2.9    30.5    +      -       +      +
     70H  LEU*     1.3    93.0    -      -       +      +
     72H  TYR*     1.3    66.1    +      -       -      +
     73H  LYS      3.1     2.9    -      -       -      -
     74H  GLU*     3.0    21.3    +      -       +      +
     75H  ILE*     3.3    13.9    +      -       +      +
    121H  PHE*     3.6    59.2    -      -       +      +
    125H  ASN*     4.2     7.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 72 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62H  ILE*     5.0    10.0    -      -       +      +
     63H  VAL*     3.6    39.4    -      -       +      +
     66H  TYR*     3.3    22.2    -      -       +      +
     67H  ASN*     3.7    30.4    -      -       +      +
     69H  LEU*     2.7    34.7    +      -       +      +
     70H  LEU*     3.2     3.6    -      -       -      -
     71H  GLU*     1.3    71.2    -      -       -      +
     73H  LYS*     1.3    98.0    +      -       +      +
     75H  ILE*     3.5     9.4    +      -       -      +
     76H  PHE*     3.0    29.7    +      +       +      +
    118H  LEU*     5.6     1.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 73 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17H  GLN*     3.7    36.6    -      -       +      +
     70H  LEU      3.9     7.1    +      -       -      +
     71H  GLU      3.0     1.0    +      -       -      -
     72H  TYR*     1.3   117.3    +      -       +      +
     74H  GLU*     1.3    60.2    +      -       -      +
     76H  PHE*     3.7     4.9    -      -       +      +
     77H  ASN*     2.8    38.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 74 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12H  GLN      4.2     4.5    -      -       -      +
     13H  LYS*     3.4    27.5    -      -       +      +
     14H  HIS*     2.4    36.2    +      -       -      +
     15H  PHE      2.9     9.0    +      -       -      -
     16H  VAL*     3.5    15.8    +      -       -      +
     17H  GLN*     4.1    23.2    -      -       +      +
     71H  GLU*     3.0    19.5    +      -       +      +
     73H  LYS*     1.3    77.8    -      -       -      +
     75H  ILE*     1.3    60.3    +      -       +      +
     77H  ASN*     3.9     1.0    -      -       -      +
     78H  MET*     2.8    52.1    +      -       -      +
    121H  PHE*     4.9     7.9    -      -       +      -
    214H  PO4      5.7     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 75 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62H  ILE*     4.0    21.3    -      -       +      -
     69H  LEU*     5.7     0.2    -      -       +      -
     71H  GLU*     3.3    12.9    +      -       +      +
     72H  TYR*     3.8     6.7    -      -       -      +
     74H  GLU*     1.3    74.6    -      -       -      +
     76H  PHE*     1.3    66.8    +      -       -      +
     78H  MET*     3.8     5.4    -      -       -      +
     79H  MET*     3.1    24.6    +      -       +      +
    114H  ALA*     4.0    29.2    -      -       +      +
    117H  ASP*     4.4     7.0    -      -       +      -
    118H  LEU*     3.1    49.8    -      -       +      +
    121H  PHE*     3.7    26.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 76 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22H  VAL*     4.2    10.8    -      -       +      -
     23H  VAL*     4.7     7.9    -      -       +      -
     59H  ALA*     3.4    33.9    -      -       +      -
     60H  PHE*     3.7    29.8    -      +       -      -
     62H  ILE*     5.6     2.2    -      -       +      +
     63H  VAL*     3.5    33.4    -      -       +      -
     72H  TYR*     3.0    23.4    +      +       +      +
     73H  LYS*     3.7     7.4    -      -       +      +
     75H  ILE*     1.3    79.8    -      -       -      +
     77H  ASN*     1.3    77.8    +      -       -      +
     79H  MET*     3.1    22.5    +      -       -      +
     80H  PHE*     3.4    30.6    +      +       -      -
----------------------------------------------------------
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Residues in contact with ASN 77 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16H  VAL*     2.7    35.5    +      -       +      +
     17H  GLN*     3.4    21.0    +      -       -      +
     19H  LEU*     3.4    19.5    +      -       -      +
     22H  VAL*     3.5    31.7    -      -       +      +
     73H  LYS*     2.8    22.2    +      -       -      +
     76H  PHE*     1.3    83.5    -      -       -      +
     78H  MET*     1.3    62.8    +      -       -      +
     80H  PHE*     3.1     4.0    +      -       -      +
     81H  LEU*     2.9    27.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 78 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61E  ALA*     3.9    19.1    -      -       +      +
     64E  ALA*     4.7     3.8    -      -       +      -
     65E  VAL*     4.0    10.5    -      -       +      -
     14H  HIS*     3.4    33.7    -      -       +      +
     16H  VAL*     3.8    16.4    -      -       +      -
     74H  GLU*     2.8    41.8    +      -       -      +
     75H  ILE*     3.8     6.1    -      -       -      +
     77H  ASN*     1.3    70.9    -      -       -      +
     79H  MET*     1.3    64.9    +      -       -      +
     81H  LEU*     3.1     7.8    +      -       -      +
     82H  LYS*     2.9    59.7    +      -       +      +
    214H  PO4      4.7     5.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 79 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55H  PHE*     3.4    28.8    -      -       +      +
     58H  HIS*     4.4    10.5    -      -       -      -
     59H  ALA*     3.2    44.6    -      -       +      +
     62H  ILE*     3.6    21.1    -      -       +      -
     75H  ILE*     3.1    14.0    +      -       +      +
     76H  PHE*     3.1    26.2    +      -       -      +
     78H  MET*     1.3    78.5    -      -       -      +
     80H  PHE*     1.3    60.7    +      -       +      +
     82H  LYS*     3.2     3.3    +      -       -      +
     83H  LEU      3.0    21.7    +      -       -      -
    110H  ILE*     4.1    17.7    -      -       +      +
    111H  MET*     5.0     3.1    -      -       -      -
    114H  ALA*     3.8    24.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 80 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22H  VAL*     3.6    30.2    -      -       +      +
     23H  VAL*     3.5    29.8    -      -       +      -
     24H  PHE*     4.1    14.2    -      +       -      -
     55H  PHE*     4.6     7.2    -      +       -      -
     56H  TYR*     3.5    47.8    -      +       -      -
     59H  ALA*     3.7    20.2    -      -       +      -
     60H  PHE*     4.8     1.8    -      +       -      -
     76H  PHE*     3.4    45.4    +      +       -      -
     77H  ASN      3.1     2.8    +      -       -      +
     79H  MET*     1.3    79.9    -      -       +      +
     81H  LEU*     1.3    67.4    +      -       -      +
     83H  LEU*     3.5    11.5    -      -       +      +
     84H  SER*     2.9    23.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 81 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64E  ALA*     3.5    26.6    -      -       +      +
     65E  VAL*     4.4    14.6    -      -       +      -
     67E  LYS*     5.5     0.3    -      -       -      +
     68E  ALA*     4.3    16.8    -      -       +      -
     16H  VAL*     3.4    31.4    -      -       +      -
     19H  LEU*     3.9    18.8    -      -       +      -
     22H  VAL*     4.1    12.3    -      -       +      -
     77H  ASN      2.9    19.6    +      -       -      +
     78H  MET*     3.1    10.5    +      -       -      +
     80H  PHE*     1.3    77.5    -      -       -      +
     82H  LYS*     1.3    60.8    +      -       -      +
     84H  SER*     3.4     9.8    +      -       -      -
     85H  VAL*     3.4    23.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 82 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57E  GLN*     3.2    23.3    +      -       -      +
     60E  LEU*     4.1    14.5    -      -       +      +
     61E  ALA*     4.0    17.1    -      -       -      +
     64E  ALA*     4.0    17.3    -      -       +      -
     78H  MET*     2.9    44.4    +      -       -      +
     79H  MET*     3.6     4.0    -      -       -      +
     81H  LEU*     1.3    75.2    -      -       -      +
     83H  LEU*     1.3    67.5    +      -       -      +
     85H  VAL*     2.9    16.4    +      -       -      +
     86H  VAL*     2.9    14.9    +      -       -      +
    110H  ILE*     3.4    38.4    +      -       +      -
    113H  LYS*     3.4    22.2    -      -       -      +
    114H  ALA*     5.6     0.4    -      -       -      +
    214H  PO4      4.0     9.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 83 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24H  PHE*     3.9    13.9    -      -       +      -
     52H  VAL*     5.1     3.1    -      -       +      -
     55H  PHE*     3.9    29.4    -      -       +      -
     56H  TYR*     4.5     9.6    -      -       +      -
     79H  MET      3.0    14.2    +      -       -      +
     80H  PHE*     3.5    16.4    -      -       +      +
     82H  LYS*     1.3    74.8    -      -       -      +
     84H  SER*     1.3    64.9    +      -       -      +
     86H  VAL*     3.0     4.8    +      -       +      +
     87H  PHE*     2.8    73.1    +      -       +      -
    107H  LEU*     3.5    27.4    -      -       +      -
    110H  ILE*     4.0     6.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 84 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67E  LYS*     2.9    32.9    +      -       -      +
     24H  PHE*     3.6    29.5    -      -       -      -
     80H  PHE      2.9    11.3    +      -       -      -
     81H  LEU*     3.4    16.4    -      -       -      -
     82H  LYS      3.1     0.2    -      -       -      -
     83H  LEU*     1.3    76.2    -      -       -      +
     85H  VAL*     1.3    62.0    +      -       -      +
     87H  PHE*     3.2     7.2    +      -       -      +
     88H  ASP*     3.2    22.3    +      -       -      +
     91H  ARG*     4.0     1.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 85 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13E  TYR*     5.3     1.6    -      -       +      -
     36E  MSE      5.3    10.8    -      -       +      -
     60E  LEU*     3.9    20.4    -      -       +      -
     63E  ILE*     4.3    19.7    -      -       +      +
     64E  ALA*     3.4    37.0    -      -       +      +
     67E  LYS*     4.4    13.5    -      -       +      -
     81H  LEU      3.5     6.1    -      -       -      +
     82H  LYS      2.9     7.8    +      -       -      +
     84H  SER*     1.3    75.7    -      -       -      +
     86H  VAL*     1.3    66.3    +      -       -      +
     88H  ASP*     3.0    31.1    +      -       +      +
     89H  THR*     3.7     6.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 86 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60E  LEU*     4.9     8.1    -      -       +      -
     48H  PHE*     5.6     2.0    -      -       +      -
     82H  LYS      2.9    16.4    +      -       -      +
     83H  LEU*     3.6     6.5    -      -       +      +
     85H  VAL*     1.3    75.9    -      -       -      +
     87H  PHE*     1.3    67.7    +      -       +      +
     89H  THR*     3.0    10.5    +      -       -      -
     90H  GLN*     3.0    18.4    +      -       +      +
    103H  ASN*     3.7    38.1    -      -       +      +
    106H  ILE*     3.7    29.2    -      -       +      -
    107H  LEU*     4.2    17.3    -      -       +      -
    110H  ILE*     4.2    11.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 87 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24H  PHE*     3.7    28.0    -      +       -      -
     29H  LEU*     3.5    31.6    -      -       +      -
     32H  ILE*     3.4    21.9    -      -       +      +
     33H  TYR*     5.8     0.2    -      +       -      -
     48H  PHE*     3.9    30.3    -      +       -      -
     52H  VAL*     4.3     9.0    -      -       +      -
     83H  LEU*     2.8    54.2    +      -       +      -
     84H  SER      3.4     9.4    -      -       -      +
     85H  VAL      3.2     0.2    -      -       -      -
     86H  VAL*     1.3    79.5    -      -       +      +
     88H  ASP*     1.3    53.2    +      -       -      +
     90H  GLN*     3.5     6.8    -      -       +      +
     91H  ARG*     2.7    53.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 88 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13E  TYR*     2.5    36.2    +      -       -      -
     18E  GLN*     2.9    35.4    +      -       -      +
     67E  LYS*     3.0     9.6    +      -       -      +
     84H  SER      3.2     7.7    +      -       -      -
     85H  VAL*     3.0    17.4    +      -       +      +
     87H  PHE*     1.3    79.3    -      -       -      +
     89H  THR*     1.3    60.7    +      -       -      +
     91H  ARG*     2.8    31.5    +      -       -      +
     92H  LYS*     3.0    23.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 89 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36E  MSE      4.9     3.6    +      -       -      +
     37E  ALA*     3.8    27.9    +      -       +      +
     85H  VAL*     4.0     6.2    +      -       -      +
     86H  VAL*     3.0    10.6    +      -       -      -
     88H  ASP*     1.3    77.2    -      -       -      +
     90H  GLN*     1.3    66.4    +      -       -      +
     92H  LYS*     3.0    12.0    +      -       +      +
     93H  GLU*     2.9    33.5    +      -       +      +
     99H  GLN*     3.6    36.8    -      -       +      +
    103H  ASN*     4.2     6.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 90 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32H  ILE*     3.8    21.9    +      -       +      +
     33H  TYR*     6.1     0.2    -      -       -      +
     35H  LEU*     4.9     0.2    -      -       -      +
     36H  SER*     3.6    22.2    +      -       -      -
     45H  LEU*     5.5     0.4    -      -       -      +
     48H  PHE*     3.6    42.6    -      -       +      -
     86H  VAL*     3.0    12.6    +      -       +      +
     87H  PHE*     3.5    14.1    -      -       +      +
     89H  THR*     1.3    77.4    -      -       -      +
     91H  ARG*     1.3    57.0    +      -       -      +
     93H  GLU*     4.6     2.6    -      -       -      +
     94H  ALA*     3.0    37.1    +      -       -      +
    100H  ILE*     3.8    23.7    -      -       -      +
    103H  ASN*     2.9    26.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 91 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18E  GLN*     3.0    28.4    +      -       -      +
     67E  LYS*     3.8     7.5    -      -       -      +
     24H  PHE*     5.5     5.7    -      -       -      -
     32H  ILE*     3.5    39.9    -      -       +      +
     35H  LEU*     3.7    34.2    -      -       +      +
     84H  SER*     4.0     1.0    +      -       -      -
     87H  PHE*     2.7    26.2    +      -       -      +
     88H  ASP*     2.8    37.9    +      -       -      +
     89H  THR      3.1     0.2    -      -       -      -
     90H  GLN*     1.3    74.9    -      -       -      +
     92H  LYS*     1.3    58.8    +      -       +      +
     94H  ALA*     4.5     3.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 92 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17E  ASP      3.0    27.0    +      -       -      -
     18E  GLN*     3.3    17.4    +      -       -      +
     19E  SER*     3.9     8.3    +      -       -      +
     88H  ASP      3.0    22.4    -      -       -      +
     89H  THR*     3.0    15.6    +      -       +      +
     91H  ARG*     1.3    78.7    -      -       +      +
     93H  GLU*     1.3    80.9    +      -       +      +
     94H  ALA      3.6     1.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 93 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37E  ALA*     6.2     0.4    -      -       +      -
     89H  THR*     2.9    22.6    +      -       +      +
     90H  GLN*     3.5     5.5    -      -       -      +
     92H  LYS*     1.3    98.4    -      -       +      +
     94H  ALA*     1.3    57.3    +      -       -      +
     95H  ASN      3.0    11.8    +      -       -      -
     96H  ASN*     3.2    41.9    +      -       +      +
     99H  GLN*     3.6    27.2    -      -       +      +
    100H  ILE*     4.2     6.4    -      -       -      +
----------------------------------------------------------
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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