Contacts of the helix formed by residues 72 - 96 (chain C) in PDB entry 5JRE


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 PHE 72 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15C  LEU*     3.3    37.5    -      -       +      -
     18C  LYS*     4.9     0.9    -      -       +      -
     19C  LYS*     3.7    36.6    -      -       +      -
     22C  ILE*     3.9    15.0    -      -       +      +
     66C  LEU*     3.4     7.7    -      -       -      +
     69C  TYR*     2.9    24.6    +      +       +      +
     71C  MET*     1.3   108.9    -      -       +      +
     73C  TYR*     1.3    64.5    +      -       -      +
     74C  SER      3.2     2.5    -      -       -      -
     75C  ASN*     3.0    34.2    +      -       +      +
     76C  GLY      3.4     7.3    +      -       -      -
    109D  TRP*     3.8    35.2    -      +       -      -
----------------------------------------------------------
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Residues in contact with TYR 73 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66C  LEU*     3.9    32.6    -      -       +      +
     69C  TYR      3.9     1.0    +      -       -      -
     70C  PRO*     3.1    21.7    +      -       +      +
     71C  MET      3.5     0.2    -      -       -      -
     72C  PHE*     1.3    75.6    -      -       -      +
     74C  SER*     1.3    67.6    +      -       -      +
     76C  GLY*     3.1    12.1    +      -       -      -
     77C  PHE*     3.1    37.1    +      +       -      -
     80C  LEU*     5.9     0.7    -      -       +      -
    107C  ASP*     2.6    36.3    +      -       -      -
    109C  TRP*     4.3     0.4    -      +       -      +
    110C  VAL*     3.6    14.2    +      -       +      +
     70D  PRO*     3.8    28.7    -      -       +      +
     71D  MET*     3.6    37.8    -      -       +      +
     73D  TYR*     5.7     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 74 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71C  MET      4.6     6.8    +      -       -      -
     73C  TYR*     1.3    85.6    -      -       -      +
     75C  ASN*     1.3    70.9    +      -       -      +
     76C  GLY      3.4     0.7    +      -       -      -
     77C  PHE*     3.5    17.5    +      -       -      +
     78C  ILE*     4.8     4.2    +      -       -      +
     74D  SER*     6.2     3.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 75 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19C  LYS*     3.7    26.0    -      -       +      +
     22C  ILE*     4.0    11.7    -      -       +      +
     23C  VAL*     3.8    25.8    -      -       +      +
     26C  SER*     3.7    17.8    +      -       -      -
     71C  MET      4.3     0.9    -      -       -      +
     72C  PHE*     3.0    37.7    +      -       +      +
     74C  SER*     1.3    84.5    +      -       -      +
     76C  GLY*     1.3    57.5    +      -       -      +
     77C  PHE      3.5     0.2    -      -       -      -
     78C  ILE      5.3     0.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 76 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22C  ILE*     3.8    15.6    -      -       -      +
     26C  SER*     3.9     3.7    +      -       -      -
     62C  GLN*     3.8    13.5    +      -       -      -
     66C  LEU*     4.3    11.9    -      -       -      -
     72C  PHE      3.4     4.0    +      -       -      -
     73C  TYR      3.1     7.3    +      -       -      -
     75C  ASN*     1.3    77.7    -      -       -      +
     77C  PHE*     1.3    65.4    +      -       -      +
     78C  ILE      3.4     2.1    +      -       -      -
     79C  GLY*     3.5     2.6    +      -       -      -
     80C  LEU*     3.3    22.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 77 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66C  LEU*     5.5     0.7    -      -       -      -
     73C  TYR*     3.1    36.6    +      +       -      +
     74C  SER*     3.5    18.7    +      -       -      +
     75C  ASN      3.5     0.2    -      -       -      -
     76C  GLY*     1.3    77.5    -      -       -      +
     78C  ILE*     1.3    65.2    +      -       +      +
     80C  LEU*     3.2     7.1    +      -       -      +
     81C  GLN*     2.9    49.0    +      -       +      +
    109C  TRP*     3.7    17.5    -      +       -      -
    110C  VAL*     3.4    29.4    -      -       +      -
    113C  PHE*     3.7    42.6    -      +       +      -
----------------------------------------------------------
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Residues in contact with ILE 78 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    160A  PHE*     5.9     7.0    -      -       +      -
    163A  ARG*     5.7    11.0    -      -       -      +
     26C  SER*     4.4     4.7    +      -       -      +
     30C  SER*     4.1     7.2    -      -       -      +
     74C  SER      4.8     3.7    +      -       -      +
     75C  ASN      5.3     0.6    +      -       -      -
     76C  GLY      3.5     0.6    -      -       -      -
     77C  PHE*     1.3    82.1    -      -       +      +
     79C  GLY*     1.3    57.7    +      -       -      +
     81C  GLN*     3.3    18.1    +      -       -      +
     82C  GLU*     2.9    48.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 79 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26C  SER*     3.0    40.3    +      -       -      -
     29C  MET*     3.4    22.8    -      -       -      +
     30C  SER*     4.0     6.1    -      -       -      -
     76C  GLY      3.5     1.5    +      -       -      -
     77C  PHE      3.3     0.6    -      -       -      -
     78C  ILE*     1.3    77.9    -      -       -      +
     80C  LEU*     1.3    54.8    +      -       -      +
     82C  GLU*     3.4     3.5    +      -       -      +
     83C  TYR*     3.0    21.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 80 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29C  MET*     3.8    20.2    -      -       +      -
     59C  ALA      4.3     4.9    -      -       -      +
     62C  GLN*     4.3     9.0    -      -       +      -
     63C  ILE*     3.8    36.1    -      -       +      -
     66C  LEU*     3.6    31.9    -      -       +      -
     73C  TYR*     5.9     1.3    -      -       +      -
     76C  GLY      3.3     9.3    +      -       -      +
     77C  PHE*     3.2     8.1    +      -       -      +
     79C  GLY*     1.3    72.1    -      -       -      +
     81C  GLN*     1.3    67.2    +      -       -      +
     83C  TYR*     3.2    15.0    +      -       +      +
     84C  VAL*     3.0    27.4    +      -       -      +
    106C  VAL*     4.4     5.2    -      -       +      -
    110C  VAL*     4.1    23.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 81 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77C  PHE*     2.9    37.8    +      -       +      +
     78C  ILE*     3.4    19.4    -      -       -      +
     80C  LEU*     1.3    76.3    -      -       -      +
     82C  GLU*     1.3    60.5    +      -       +      +
     84C  VAL*     3.3     1.6    +      -       -      -
     85C  GLU*     3.0    23.8    +      -       -      +
    110C  VAL*     4.4    13.1    -      -       -      +
    113C  PHE*     3.5    19.3    +      -       +      +
    114C  GLY*     3.6    23.1    -      -       -      +
    117C  ASP*     2.7    27.0    +      -       -      +
    165C  LYS*     3.8    12.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 82 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    163A  ARG*     5.5     1.0    +      -       -      -
     30C  SER*     3.5    27.0    +      -       -      +
     33C  SER*     3.0    24.7    +      -       -      +
     34C  LYS*     2.8    34.0    +      -       -      +
     37C  ILE*     5.3     0.2    -      -       -      +
     78C  ILE*     2.9    33.2    +      -       +      +
     79C  GLY      3.8     3.8    -      -       -      +
     81C  GLN*     1.3    78.3    -      -       +      +
     83C  TYR*     1.3    60.8    +      -       -      +
     85C  GLU*     3.4    18.0    +      -       -      +
     86C  ALA*     3.0    24.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 83 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29C  MET*     3.7    11.2    -      -       +      -
     33C  SER*     3.5     7.8    +      -       -      -
     55C  LEU*     3.8    15.3    -      -       +      -
     56C  THR*     4.1    13.1    -      -       -      +
     59C  ALA*     3.6    30.1    -      -       +      -
     60C  LYS*     4.3    10.9    -      -       -      -
     63C  ILE*     4.8     1.1    -      -       +      -
     79C  GLY      3.0    14.1    +      -       -      +
     80C  LEU*     3.3    19.5    -      -       +      +
     82C  GLU*     1.3    73.6    -      -       -      +
     84C  VAL*     1.3    68.6    +      -       +      +
     86C  ALA*     3.4     0.7    +      -       -      +
     87C  LEU*     3.0    58.1    +      -       +      +
    103C  GLU      5.0     0.3    +      -       -      -
    104C  LEU*     2.8    45.7    +      -       +      +
    106C  VAL*     3.9    15.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 84 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80C  LEU      3.0    17.3    +      -       -      +
     81C  GLN      3.7     6.7    -      -       -      +
     83C  TYR*     1.3    74.8    -      -       +      +
     85C  GLU*     1.3    67.5    +      -       -      +
     87C  LEU*     3.8     0.3    -      -       -      +
     88C  ALA*     2.9    23.9    +      -       -      +
    104C  LEU*     3.9    23.9    -      -       +      +
    106C  VAL*     3.9    21.3    -      -       +      -
    110C  VAL*     3.9    23.8    -      -       +      +
    111C  TYR*     3.9    27.1    -      -       +      +
    114C  GLY*     4.0     8.3    -      -       -      -
    115C  ILE*     4.0    12.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 85 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37C  ILE*     3.9    13.7    -      -       +      +
     81C  GLN*     3.0    16.0    +      -       -      +
     82C  GLU*     3.7    20.1    -      -       -      +
     83C  TYR      3.3     0.2    -      -       -      -
     84C  VAL*     1.3    78.5    -      -       -      +
     86C  ALA*     1.3    63.6    +      -       -      +
     88C  ALA*     3.6     2.1    -      -       -      +
     89C  LEU*     3.1    22.3    +      -       -      +
    114C  GLY      3.8    14.1    +      -       -      +
    117C  ASP*     3.7    40.2    -      -       +      +
    118C  ILE*     3.9     9.2    -      -       +      +
    121C  GLU*     3.2    28.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 86 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33C  SER*     3.9    33.2    -      -       -      +
     36C  LEU*     4.0    18.0    -      -       +      +
     37C  ILE*     4.0    15.9    -      -       +      +
     40C  MET*     5.9     0.3    -      -       -      +
     55C  LEU*     4.1     2.0    -      -       +      -
     82C  GLU      3.0    18.1    +      -       -      +
     83C  TYR      3.9     2.7    -      -       -      +
     84C  VAL      3.2     0.2    -      -       -      -
     85C  GLU*     1.3    77.4    -      -       -      +
     87C  LEU*     1.3    58.2    +      -       -      +
     89C  LEU*     3.3     4.7    +      -       -      +
     90C  TYR*     2.9    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 87 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36C  LEU*     4.0    11.2    -      -       +      -
     52C  LYS*     4.5    15.5    -      -       +      -
     55C  LEU*     3.8    18.2    -      -       +      -
     56C  THR*     4.0    16.4    -      -       +      +
     83C  TYR*     3.0    49.5    +      -       +      +
     84C  VAL      4.1     0.9    -      -       -      +
     86C  ALA*     1.3    73.1    -      -       -      +
     88C  ALA*     1.3    58.8    +      -       -      +
     90C  TYR*     3.2     5.1    +      -       +      +
     91C  TYR*     2.9    47.9    +      -       +      -
     99C  PRO*     4.4     1.1    -      -       -      -
    104C  LEU*     3.6    32.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 88 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84C  VAL      2.9    19.8    +      -       -      +
     85C  GLU      3.6     0.2    -      -       -      +
     87C  LEU*     1.3    77.3    -      -       -      +
     89C  LEU*     1.3    56.7    +      -       -      +
     91C  TYR*     3.8     0.3    -      -       -      -
     92C  TYR*     2.8    30.2    +      -       -      +
     97C  ARG      4.0     3.6    -      -       -      +
     98C  ILE*     4.1     9.2    -      -       +      +
     99C  PRO*     3.6    22.1    -      -       +      +
    115C  ILE*     4.1    14.8    -      -       +      -
    118C  ILE*     3.6    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 89 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37C  ILE*     3.7    42.4    -      -       +      +
     40C  MET*     4.7     3.4    -      -       +      -
     41C  ILE*     4.5     7.0    -      -       +      -
     85C  GLU      3.1    14.0    +      -       -      +
     86C  ALA*     3.6     8.1    -      -       -      +
     88C  ALA*     1.3    73.8    -      -       -      +
     90C  TYR*     1.3    67.6    +      -       -      +
     92C  TYR*     3.2     5.9    +      -       +      +
     93C  ILE*     3.0    50.7    +      -       +      +
    118C  ILE*     4.9     4.8    -      -       +      +
    121C  GLU*     3.9    38.6    -      -       +      +
    122C  ILE*     4.2    16.8    -      -       +      -
    125C  LYS*     5.0     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 90 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36C  LEU*     4.0    16.6    -      -       +      -
     40C  MET*     3.7    41.3    -      -       +      +
     48C  ALA*     4.7     1.8    -      -       +      -
     49C  ASP*     2.7    28.9    +      -       -      -
     52C  LYS*     3.4    44.6    +      -       +      +
     86C  ALA      2.9    14.3    +      -       -      +
     87C  LEU*     3.3    12.6    -      -       -      +
     89C  LEU*     1.3    76.5    -      -       -      +
     91C  TYR*     1.3    81.6    +      +       -      +
     93C  ILE      3.4     0.2    +      -       -      -
     94C  LYS*     2.9    50.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 91 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52C  LYS*     3.4    34.5    +      -       -      -
     87C  LEU*     2.9    38.0    +      -       +      +
     90C  TYR*     1.3    87.5    -      +       -      +
     92C  TYR*     1.3    61.8    +      -       -      +
     95C  GLU*     2.9    51.7    +      -       +      +
     96C  ASN      3.0     5.9    +      -       -      -
     97C  ARG*     3.1    46.2    +      -       +      +
     99C  PRO*     4.0    25.4    -      -       +      -
    103C  GLU*     4.4    11.5    +      -       +      +
    104C  LEU*     5.1     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 92 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88C  ALA      2.8    19.7    +      -       -      +
     89C  LEU*     3.2     8.7    +      -       +      +
     91C  TYR*     1.3    77.9    -      -       -      +
     93C  ILE*     1.3    64.1    +      -       +      +
     96C  ASN*     3.1    30.0    +      -       -      +
     97C  ARG      3.0    15.4    +      -       -      +
     98C  ILE*     4.2     8.5    -      -       +      -
    122C  ILE*     4.0    35.9    -      -       +      -
    125C  LYS*     5.9     0.7    -      -       +      -
    137C  TYR*     3.6    26.0    +      +       -      -
    140C  LYS*     4.2     5.3    +      -       -      +
    141C  ALA*     3.6    17.2    +      -       -      +
    144C  ASP*     2.6    36.4    +      -       +      +
      1D  MET*     3.6    30.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 93 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40C  MET*     3.8    35.0    -      -       +      +
     41C  ILE      4.7     0.4    -      -       -      +
     45C  TYR*     3.8    23.8    -      -       +      +
     89C  LEU*     3.0    46.2    +      -       +      +
     92C  TYR*     1.3    80.7    -      -       +      +
     94C  LYS*     1.3    65.2    +      -       -      +
     96C  ASN*     4.5     1.0    +      -       -      +
    125C  LYS*     4.1    30.3    -      -       +      -
    137C  TYR*     4.0    20.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 94 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40C  MET*     4.5     7.2    -      -       +      -
     45C  TYR*     6.4     0.9    -      -       -      -
     90C  TYR*     2.9    41.2    +      -       +      +
     91C  TYR*     4.6     0.2    -      -       -      -
     93C  ILE*     1.3    81.0    -      -       -      +
     95C  GLU*     1.3    73.3    +      -       +      +
     96C  ASN      3.7     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 95 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90C  TYR*     5.8     0.2    -      -       -      -
     91C  TYR*     2.9    32.0    +      -       +      +
     94C  LYS*     1.3    91.8    -      -       +      +
     96C  ASN*     1.3    71.8    +      -       -      +
     97C  ARG*     2.8    46.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 96 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91C  TYR      3.0     2.8    +      -       -      -
     92C  TYR*     3.1    24.8    +      -       -      +
     93C  ILE      4.5     1.0    +      -       -      +
     94C  LYS      3.7     1.0    -      -       -      -
     95C  GLU*     1.3    80.3    -      -       -      +
     97C  ARG*     1.3    58.5    +      -       -      +
    140C  LYS*     2.6    40.5    +      -       -      +
    144C  ASP*     4.2     2.6    -      -       -      +
      1D  MET*     5.9     2.8    -      -       -      +
----------------------------------------------------------
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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