Contacts of the helix formed by residues 73 - 94 (chain A) in PDB entry 5HZZ


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

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

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with LEU 73 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  LEU*     4.2    19.1    -      -       +      -
     68A  LEU*     4.9     5.6    -      -       +      -
     69A  SER      3.8     8.3    -      -       -      +
     70A  ALA*     2.9    20.4    +      -       +      +
     72A  ASP*     1.3    80.1    -      -       -      +
     74A  ALA*     1.3    63.9    +      -       -      +
     75A  PRO*     3.4     1.1    -      -       -      -
     76A  LEU*     3.3     7.5    +      -       +      +
     77A  ALA*     2.9    22.7    +      -       -      +
     29C  PRO*     5.0     0.9    -      -       +      -
     30C  THR      3.6    35.9    -      -       -      +
     31C  PRO*     4.0     2.2    -      -       +      -
     32C  PRO*     3.7    21.3    -      -       +      -
     94C  LEU*     4.1    20.9    -      -       +      -
     96C  ILE*     4.1    21.5    -      -       +      +
    138C  ILE*     4.3     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 74 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70A  ALA      4.2     0.2    +      -       -      -
     71A  GLY*     3.3    14.5    +      -       -      +
     73A  LEU*     1.3    75.7    -      -       -      +
     75A  PRO*     1.3    70.5    -      -       +      +
     77A  ALA      3.3     0.5    +      -       -      -
     78A  HIS*     2.9    25.1    +      -       -      +
    134C  VAL*     3.6     4.8    -      -       +      +
    135C  ARG*     3.8    41.7    -      -       +      +
    138C  ILE*     3.4    18.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 75 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54A  GLU*     3.8    25.4    -      -       -      +
     72A  ASP*     3.6    15.3    -      -       -      +
     74A  ALA*     1.3    94.3    -      -       +      +
     76A  LEU*     1.3    62.2    +      -       -      +
     78A  HIS*     3.3     6.4    +      -       +      +
     79A  GLU*     2.9    31.8    +      -       +      +
    135C  ARG*     4.3    11.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 76 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51A  VAL*     4.1    13.0    -      -       +      +
     54A  GLU*     3.6    24.8    +      -       +      +
     55A  ILE*     3.7    26.0    -      -       +      -
     58A  LEU*     3.8    26.7    -      -       +      -
     73A  LEU*     3.3    10.5    +      -       +      +
     75A  PRO*     1.3    78.4    -      -       -      +
     77A  ALA*     1.3    58.3    +      -       -      +
     79A  GLU*     3.2     2.2    +      -       +      -
     80A  LEU*     2.8    55.1    +      -       +      +
     37C  LEU*     4.1    16.6    -      -       +      -
     90C  ALA*     6.3     0.7    -      -       +      -
     94C  LEU*     3.8    23.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 77 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73A  LEU      2.9    17.4    +      -       -      +
     74A  ALA      3.7     0.7    -      -       -      +
     76A  LEU*     1.3    75.7    -      -       -      +
     78A  HIS*     1.3    57.1    +      -       -      +
     80A  LEU*     3.4     2.8    +      -       -      +
     81A  ALA*     3.0    29.5    +      -       -      +
     91C  LEU*     3.9    24.9    -      -       +      +
     94C  LEU*     5.4     0.2    -      -       -      +
     96C  ILE*     4.0    14.3    -      -       +      +
    101C  VAL*     3.6     7.2    -      -       +      +
    134C  VAL*     4.0     4.0    -      -       +      -
    138C  ILE*     3.7    24.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 78 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74A  ALA      2.9    17.9    +      -       -      +
     75A  PRO*     3.5     7.9    -      -       +      +
     77A  ALA*     1.3    77.1    -      -       -      +
     79A  GLU*     1.3    64.9    +      -       -      +
     81A  ALA*     3.1     3.7    +      -       -      +
     82A  ASP*     2.9    49.4    +      -       -      -
    101C  VAL*     4.6     1.6    -      -       -      -
    105C  VAL*     4.0     9.7    -      -       +      +
    132C  ALA*     4.0    32.6    +      -       +      +
    134C  VAL*     3.7    22.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 79 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47A  ALA*     4.8     2.1    -      -       -      +
     50A  GLU*     3.7    31.2    -      -       +      +
     51A  VAL*     3.4    30.0    -      -       +      +
     54A  GLU*     4.9     4.5    -      -       +      +
     75A  PRO*     2.9    25.1    +      -       +      +
     76A  LEU*     3.9     5.4    -      -       -      +
     78A  HIS*     1.3    82.6    +      -       -      +
     80A  LEU*     1.3    62.8    +      -       -      +
     82A  ASP*     3.3     4.8    +      -       -      +
     83A  LEU*     3.0    18.5    +      -       -      +
    201A   MN      2.2    35.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 80 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51A  VAL*     3.8    26.2    -      -       +      -
     55A  ILE*     5.8     0.7    -      -       +      -
     76A  LEU*     2.8    45.1    +      -       +      +
     77A  ALA      3.7     4.3    -      -       -      +
     79A  GLU*     1.3    73.0    -      -       -      +
     81A  ALA*     1.3    56.7    +      -       -      +
     83A  LEU      3.1     1.6    +      -       -      -
     84A  LEU*     3.0    23.9    +      -       -      +
     44C  LEU*     4.1    15.0    -      -       +      -
     87C  THR*     3.3    29.0    -      -       +      +
     90C  ALA*     3.9    25.6    -      -       +      -
     91C  LEU*     3.9    31.4    -      -       +      +
     94C  LEU*     4.3     7.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 81 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77A  ALA      3.0     8.4    +      -       -      +
     78A  HIS      3.6     4.3    -      -       -      +
     80A  LEU*     1.3    73.2    -      -       -      +
     82A  ASP*     1.3    61.7    +      -       -      +
     84A  LEU*     3.3    15.9    +      -       +      +
     85A  TYR*     2.9    26.7    +      -       -      +
     91C  LEU*     4.6     2.8    -      -       +      +
     98C  ALA      5.6     0.2    -      -       -      +
    101C  VAL*     3.5    31.0    -      -       +      -
    102C  PHE*     4.3    16.7    -      -       -      +
    105C  VAL*     3.8    17.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 82 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47A  ALA*     4.5     7.5    -      -       +      +
     78A  HIS*     2.9    33.0    +      -       -      +
     79A  GLU*     3.4     9.8    -      -       -      +
     81A  ALA*     1.3    76.3    -      -       -      +
     83A  LEU*     1.3    61.7    +      -       -      +
     85A  TYR*     3.2     8.9    +      -       -      +
     86A  VAL*     3.1    26.2    +      -       -      +
    201A   MN      2.2    37.9    +      -       -      +
    105C  VAL*     3.6    21.0    -      -       -      +
    109C  ASN*     5.2     1.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 83 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44A  LEU*     4.2     7.6    -      -       +      +
     47A  ALA*     3.8    22.4    -      -       +      +
     48A  SER*     3.8    26.7    -      -       -      +
     51A  VAL*     4.3    15.9    -      -       +      -
     79A  GLU      3.0    12.9    +      -       -      +
     80A  LEU      3.1     8.9    +      -       -      +
     82A  ASP*     1.3    73.7    -      -       -      +
     84A  LEU*     1.3    62.7    +      -       -      +
     86A  VAL*     3.3    10.7    +      -       +      +
     87A  THR*     2.7    42.6    +      -       -      +
     44C  LEU*     3.8    19.3    -      -       +      -
     83C  LEU*     4.5     8.3    -      -       +      -
     87C  THR*     3.5    25.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 84 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80A  LEU      3.0    15.4    +      -       -      +
     81A  ALA*     3.4    12.6    -      -       +      +
     83A  LEU*     1.3    75.1    -      -       -      +
     85A  TYR*     1.3    63.6    -      -       -      +
     87A  THR*     4.4     2.9    -      -       -      -
     88A  TYR*     2.9    32.6    +      -       +      -
     84C  LEU*     3.9    20.4    -      -       +      -
     87C  THR*     3.6    26.0    -      -       +      -
     88C  TYR*     3.9    41.1    -      -       +      +
     91C  LEU*     4.1    20.4    -      -       +      -
     98C  ALA*     4.7     2.9    -      -       +      +
    102C  PHE*     3.9    25.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 85 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  LEU*     3.7    29.4    -      -       +      +
     17A  PHE*     3.4    37.5    -      +       -      +
     40A  ARG*     4.5     0.2    +      -       -      -
     81A  ALA      2.9    11.7    +      -       -      +
     82A  ASP*     3.4    14.4    -      -       -      +
     83A  LEU      3.1     0.6    -      -       -      -
     84A  LEU*     1.3    76.3    -      -       -      +
     86A  VAL*     1.3    61.8    +      -       +      +
     89A  GLY*     2.9    24.8    +      -       -      -
    102C  PHE*     3.5    32.7    -      +       -      -
    105C  VAL*     4.1     9.9    -      -       +      -
    106C  HIS*     2.7    39.8    +      -       -      -
    109C  ASN*     3.5    33.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 86 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  ARG*     3.0    30.3    +      -       -      +
     43A  LEU*     3.9    37.9    -      -       +      +
     44A  LEU*     4.0    16.8    -      -       +      +
     47A  ALA*     3.7    23.1    -      -       +      -
     82A  ASP      3.1    13.1    +      -       -      +
     83A  LEU*     3.4    13.2    -      -       +      +
     85A  TYR*     1.3    79.4    -      -       +      +
     87A  THR*     1.3    59.9    +      -       -      +
     90A  ALA*     3.1    14.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 87 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44A  LEU*     3.5    17.1    -      -       -      +
     83A  LEU*     2.7    25.4    +      -       -      +
     84A  LEU*     4.4     0.2    -      -       -      -
     86A  VAL*     1.3    76.0    -      -       -      +
     88A  TYR*     1.3    64.3    -      -       -      +
     90A  ALA*     3.2    13.2    +      -       -      +
     91A  LEU*     3.2    14.4    +      -       -      +
     80C  LEU*     3.5    34.7    -      -       +      +
     83C  LEU*     3.6    19.7    -      -       +      +
     84C  LEU*     3.6    27.4    -      -       +      +
     87C  THR*     5.4     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 88 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  ASN*     3.5    20.5    +      -       +      +
     11A  ALA*     3.7    27.6    -      -       +      -
     14A  LEU*     3.7    19.9    -      -       +      +
     84A  LEU*     2.9    30.0    +      -       +      +
     87A  THR*     1.3    72.9    -      -       -      +
     89A  GLY*     1.3    57.8    +      -       -      +
     91A  LEU*     3.2     6.5    +      -       -      +
     92A  ASP*     2.9    29.8    +      -       -      +
     98A  ALA*     3.7    24.5    -      -       +      -
     99A  ASP*     4.4     0.5    +      -       -      -
     10C  ASN*     2.9    24.5    +      -       -      -
     84C  LEU*     3.8    23.3    -      -       +      +
     88C  TYR*     2.4    37.8    +      +       -      -
    102C  PHE*     4.0    16.2    -      +       -      -
----------------------------------------------------------
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Residues in contact with GLY 89 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  LEU*     3.6    17.5    -      -       -      +
     18A  HIS*     3.6     7.3    -      -       -      -
     40A  ARG*     3.4    18.8    -      -       -      -
     85A  TYR      2.9    17.1    +      -       -      -
     86A  VAL      3.6     0.2    +      -       -      -
     87A  THR      3.2     0.4    -      -       -      -
     88A  TYR*     1.3    77.5    -      -       -      +
     90A  ALA*     1.3    55.1    +      -       -      +
     92A  ASP*     3.4     1.0    +      -       -      -
     93A  GLN*     3.0    34.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 90 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  ARG*     3.4    32.7    -      -       +      +
     44A  LEU*     5.1     5.2    -      -       +      -
     86A  VAL      3.1    14.0    +      -       -      +
     87A  THR*     3.2     8.3    +      -       -      +
     89A  GLY*     1.3    74.8    -      -       -      +
     91A  LEU*     1.3    65.7    +      -       -      +
     93A  GLN*     3.3     3.3    +      -       -      +
     94A  LEU*     3.1    29.6    +      -       +      +
     80C  LEU*     4.2    22.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 91 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87A  THR      3.2    10.0    +      -       -      +
     88A  TYR*     3.2     7.7    +      -       -      +
     90A  ALA*     1.3    76.2    -      -       -      +
     92A  ASP*     1.3    62.7    +      -       -      +
     94A  LEU*     3.2    10.0    +      -       +      +
     96A  ILE*     3.0    60.2    +      -       +      +
     98A  ALA*     3.6    28.5    -      -       +      +
    101A  VAL*     5.4     2.5    -      -       +      -
     77C  ALA*     4.1    15.7    -      -       +      +
     80C  LEU*     3.9    38.8    -      -       +      -
     81C  ALA*     4.6     3.6    -      -       +      +
     84C  LEU*     3.8    20.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  ALA      4.7     3.2    -      -       -      +
     14A  LEU*     4.4     6.3    -      -       +      -
     15A  HIS*     3.0    40.2    +      -       -      +
     18A  HIS*     2.8    24.7    +      -       +      +
     25A  THR*     2.5    32.5    +      -       -      -
     26A  PRO      4.2     1.4    -      -       -      +
     88A  TYR      2.9    17.1    +      -       -      +
     89A  GLY*     3.7     4.7    -      -       -      +
     90A  ALA      3.2     0.2    -      -       -      -
     91A  LEU*     1.3    77.7    -      -       -      +
     93A  GLN*     1.3    57.5    +      -       -      +
     95A  GLY*     3.0    17.7    +      -       -      +
     96A  ILE      4.2     5.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  HIS*     3.5    31.0    +      -       +      -
     21A  ILE*     5.9     0.8    -      -       -      +
     23A  ALA*     5.0     9.3    +      -       -      +
     25A  THR*     3.7    16.1    -      -       +      +
     26A  PRO*     4.0    13.6    -      -       -      +
     30A  THR*     4.9     2.4    -      -       -      +
     32A  PRO*     5.5     0.2    -      -       -      +
     36A  LEU*     3.1    47.2    -      -       +      +
     39A  LEU*     5.5     1.9    -      -       -      +
     40A  ARG*     3.2    27.3    +      -       +      +
     89A  GLY      3.0    19.4    +      -       -      +
     90A  ALA*     3.3     5.1    +      -       -      +
     92A  ASP*     1.3    76.1    -      -       -      +
     94A  LEU*     1.3    60.7    +      -       +      +
     95A  GLY      3.2     1.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 94 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26A  PRO*     4.6     1.8    -      -       -      -
     29A  PRO*     3.4     2.4    -      -       -      +
     30A  THR      2.9    31.8    +      -       -      +
     32A  PRO*     3.7    39.0    -      -       +      -
     36A  LEU*     5.4     2.9    -      -       +      -
     37A  LEU*     4.7     6.7    -      -       +      -
     40A  ARG*     6.4     2.5    -      -       +      -
     90A  ALA*     3.1    16.0    +      -       +      +
     91A  LEU*     3.5     9.2    -      -       -      +
     92A  ASP      3.2     0.2    -      -       -      -
     93A  GLN*     1.3    76.9    -      -       -      +
     95A  GLY*     1.3    60.4    +      -       -      +
     96A  ILE*     3.5    26.0    +      -       +      +
     73C  LEU*     4.3     9.3    -      -       +      +
     76C  LEU*     3.8    26.0    -      -       +      -
     77C  ALA      5.6     0.4    -      -       -      +
     80C  LEU*     4.1    15.5    -      -       +      -
----------------------------------------------------------
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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