Contacts of the helix formed by residues 95 - 120 (chain F) in PDB entry 5GOU


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 SER 95 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41F  PHE*     3.7     7.3    -      -       -      -
     46F  VAL*     6.4     0.7    -      -       -      -
     93F  TRP      2.9    12.4    +      -       -      +
     94F  GLU*     1.3    82.3    +      -       -      +
     96F  GLY*     1.3    60.1    +      -       -      +
     97F  LEU      3.5     0.7    +      -       -      -
     98F  ASN*     3.2    20.8    +      -       -      +
     99F  ALA*     3.2    17.2    +      -       -      +
    168F  PRO*     3.2    31.0    -      -       -      +
    174F  GLU*     3.2    15.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 96 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41F  PHE*     3.6    22.5    -      -       -      -
     48F  LEU*     5.3     1.0    -      -       -      +
     51F  PHE*     3.6    22.9    -      -       -      -
     95F  SER*     1.3    71.6    -      -       -      +
     97F  LEU*     1.3    57.5    +      -       -      -
     99F  ALA*     4.0     0.7    -      -       -      +
    100F  MET*     3.0    29.1    +      -       -      +
    162F  LEU*     4.3     1.8    -      -       -      -
    174F  GLU*     2.7    20.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 97 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95F  SER*     4.0     3.6    -      -       -      +
     96F  GLY*     1.3    76.6    -      -       -      +
     98F  ASN*     1.3    58.7    +      -       -      +
    100F  MET*     3.3     1.6    +      -       -      +
    101F  GLU*     2.9    42.3    +      -       -      +
    159F  VAL*     3.9    14.4    -      -       +      +
    162F  LEU*     3.8    25.9    -      -       +      +
    163F  ARG*     3.7    31.4    -      -       +      -
    167F  ALA*     3.3    46.7    -      -       +      +
    168F  PRO*     3.7    12.1    -      -       +      -
    174F  GLU*     2.9     7.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 98 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93F  TRP*     3.1    27.7    -      -       -      +
     94F  GLU*     3.6    30.1    +      -       -      +
     95F  SER*     3.2    16.2    +      -       -      +
     97F  LEU*     1.3    80.1    -      -       -      +
     99F  ALA*     1.3    56.5    +      -       -      +
    101F  GLU*     3.1    10.5    +      -       -      +
    102F  CYS*     2.8    49.1    +      -       -      -
    168F  PRO*     5.9     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 99 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37F  MET*     3.5    18.8    -      -       +      +
     41F  PHE*     3.5    37.7    -      -       +      -
     55F  PHE*     3.7     8.8    -      -       +      -
     93F  TRP*     4.0    16.4    -      -       +      -
     95F  SER      3.2     6.0    +      -       -      +
     96F  GLY      4.2     0.4    -      -       -      +
     98F  ASN*     1.3    81.7    +      -       -      +
    100F  MET*     1.3    60.7    +      -       -      +
    102F  CYS*     3.5     5.3    +      -       -      -
    103F  ALA*     3.1    20.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 100 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51F  PHE*     3.5    30.7    -      -       +      -
     54F  TYR*     4.0    11.9    -      -       +      -
     55F  PHE*     3.7    18.8    -      -       +      -
     96F  GLY      3.0    16.3    +      -       -      +
     97F  LEU      3.6     4.5    -      -       -      +
     99F  ALA*     1.3    77.4    -      -       -      +
    101F  GLU*     1.3    62.1    +      -       -      +
    103F  ALA*     3.4     4.3    +      -       -      +
    104F  LEU*     3.3    20.4    +      -       -      +
    155F  LEU*     3.5    28.2    -      -       +      +
    158F  HIS*     3.6    39.7    -      -       +      -
    159F  VAL*     4.0    15.3    -      -       +      +
    162F  LEU*     4.2     6.7    -      -       +      -
    177F  PHE*     4.6     5.8    -      -       +      -
    182F  LEU      5.1     2.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 101 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97F  LEU*     2.9    30.5    +      -       -      +
     98F  ASN*     3.6     9.6    +      -       -      +
    100F  MET*     1.3    75.9    -      -       -      +
    102F  CYS*     1.3    64.9    +      -       -      +
    104F  LEU*     3.4     8.8    +      -       +      +
    105F  HIS*     3.3    19.6    +      -       -      +
    159F  VAL*     3.7    24.6    -      -       +      +
    163F  ARG*     3.5    25.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 102 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37F  MET*     3.7    20.2    -      -       +      -
     90F  CYS*     6.0     1.1    -      -       -      -
     93F  TRP*     3.9    20.9    -      -       +      -
     98F  ASN*     2.8    44.1    +      -       -      +
    101F  GLU*     1.3    77.1    -      -       -      +
    103F  ALA*     1.3    61.4    +      -       -      +
    105F  HIS*     3.1    10.2    +      -       -      +
    106F  LEU*     3.0    23.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 103 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34F  TYR*     3.4    39.6    +      -       +      +
     37F  MET*     4.0     4.6    -      -       -      +
     55F  PHE*     3.9     7.6    -      -       +      -
     99F  ALA      3.1    17.0    +      -       -      +
    100F  MET      3.7     5.6    -      -       -      +
    101F  GLU      3.3     0.4    -      -       -      -
    102F  CYS*     1.3    76.6    -      -       -      +
    104F  LEU*     1.3    56.7    +      -       -      +
    106F  LEU*     3.3     4.5    +      -       -      +
    107F  GLU*     3.0    27.4    +      -       -      +
    155F  LEU*     3.6    17.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 104 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100F  MET      3.3    10.1    +      -       -      +
    101F  GLU*     3.7    13.2    -      -       +      +
    102F  CYS      3.2     0.6    -      -       -      -
    103F  ALA*     1.3    79.2    -      -       -      +
    105F  HIS*     1.3    62.5    +      -       -      +
    107F  GLU*     3.3     1.2    +      -       -      +
    108F  LYS*     3.0    41.1    +      -       +      +
    152F  ILE*     3.7    44.0    -      -       +      +
    155F  LEU*     3.7    17.4    -      -       +      +
    156F  GLY*     4.3     4.9    -      -       -      +
    159F  VAL*     4.6     7.2    -      -       +      -
      7G  GLN*     3.2    45.5    -      -       +      +
      8G  VAL*     4.6     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 105 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101F  GLU      3.3     8.5    +      -       -      +
    102F  CYS*     3.1    12.2    +      -       -      +
    104F  LEU*     1.3    78.5    -      -       -      +
    106F  LEU*     1.3    64.0    +      -       -      +
    108F  LYS*     3.5    10.7    +      -       -      +
    109F  ASN*     3.1    52.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 106 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26F  LEU*     5.1     3.8    -      -       +      -
     29F  TYR*     3.9    32.3    -      -       +      -
     30F  ALA*     3.6    36.8    -      -       +      +
     33F  VAL*     4.1    18.8    -      -       +      -
     34F  TYR*     3.9    22.9    -      -       +      -
    102F  CYS      3.0    12.3    +      -       -      +
    103F  ALA*     3.6     8.1    -      -       -      +
    104F  LEU      3.2     0.2    -      -       -      -
    105F  HIS*     1.3    80.2    -      -       -      +
    107F  GLU*     1.3    57.3    +      -       -      +
    109F  ASN*     3.0    12.7    +      -       +      +
    110F  VAL*     2.8    35.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 107 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30F  ALA*     4.9     1.2    -      -       -      +
     34F  TYR*     2.8    32.3    +      -       -      +
     58F  GLN*     5.5     1.3    -      -       -      +
     62F  GLU*     2.9    37.1    -      -       -      +
    103F  ALA      3.0    13.4    +      -       -      +
    104F  LEU      3.9     2.5    -      -       -      +
    106F  LEU*     1.3    79.1    -      -       -      +
    108F  LYS*     1.3    52.6    +      -       -      +
    110F  VAL*     3.6     5.4    -      -       -      +
    111F  ASN*     2.7    36.7    +      -       -      +
    148F  GLN*     3.5    20.6    -      -       -      +
    151F  ALA*     4.2    17.6    -      -       +      +
    152F  ILE*     3.7    20.3    -      -       +      +
    155F  LEU*     3.6    15.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 108 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104F  LEU*     3.0    31.5    +      -       +      +
    105F  HIS*     3.9     9.9    -      -       -      +
    107F  GLU*     1.3    76.3    -      -       -      +
    109F  ASN*     1.3    60.1    +      -       -      +
    112F  GLN*     3.0    11.3    +      -       -      +
    152F  ILE*     3.8    20.0    -      -       +      -
      7G  GLN      3.3    27.3    +      -       -      +
      8G  VAL      3.8     4.9    +      -       -      -
      9G  ARG      3.5    22.4    +      -       -      -
     10G  GLN*     2.5    48.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 109 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26F  LEU*     4.0     9.6    -      -       +      +
    105F  HIS*     3.1    48.1    +      -       -      -
    106F  LEU*     3.0    15.8    +      -       +      +
    108F  LYS*     1.3    76.2    -      -       -      +
    110F  VAL*     1.3    66.2    +      -       +      +
    112F  GLN*     3.3    14.4    +      -       -      +
    113F  SER*     3.2    27.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 110 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23F  GLN*     2.8    29.1    +      -       -      +
     26F  LEU*     3.9    26.0    -      -       +      +
     27F  GLU*     3.2    35.4    -      -       +      +
     30F  ALA*     4.1    24.5    -      -       +      -
     62F  GLU*     4.2     4.5    -      -       -      +
    106F  LEU*     2.8    27.3    +      -       +      +
    107F  GLU*     3.7     9.2    -      -       -      +
    109F  ASN*     1.3    70.7    -      -       -      +
    111F  ASN*     1.3    63.2    +      -       -      +
    114F  LEU*     3.0     7.0    +      -       +      +
    148F  GLN*     3.8    15.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 111 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107F  GLU      2.7    21.2    +      -       -      +
    108F  LYS      3.9     0.2    -      -       -      +
    110F  VAL*     1.3    74.0    -      -       -      +
    112F  GLN*     1.3    61.6    +      -       -      +
    114F  LEU*     3.1     8.2    +      -       -      +
    115F  LEU*     3.0    45.6    +      -       -      +
    145F  ALA      4.9     1.9    -      -       -      +
    148F  GLN*     3.5    33.3    +      -       +      +
    149F  VAL*     4.7    13.1    -      -       -      +
    152F  ILE*     3.7    10.5    -      -       +      +
     10G  GLN*     2.6    32.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 112 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108F  LYS      3.0    17.8    +      -       -      +
    109F  ASN*     3.7    16.1    -      -       -      +
    110F  VAL      3.3     0.2    -      -       -      -
    111F  ASN*     1.3    75.0    -      -       -      +
    113F  SER*     1.3    67.2    +      -       -      +
    115F  LEU*     3.2    19.1    +      -       -      +
    116F  GLU*     3.3    28.4    +      -       -      +
     10G  GLN*     3.4    17.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 113 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19F  ALA      5.5     0.2    -      -       -      +
     22F  ARG*     5.7    10.8    +      -       -      -
     23F  GLN*     3.5    21.5    +      -       -      +
     26F  LEU*     3.8    14.8    -      -       -      +
    109F  ASN      3.2    13.2    +      -       -      -
    112F  GLN*     1.3    79.7    +      -       -      +
    114F  LEU*     1.3    60.6    +      -       -      +
    116F  GLU*     3.5    14.9    +      -       -      +
    117F  LEU*     3.2    20.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 114 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23F  GLN*     3.0    24.0    -      -       -      +
     27F  GLU*     4.4     3.6    -      -       -      +
     69F  LEU*     5.9     3.6    -      -       +      -
    110F  VAL      3.0    19.1    +      -       -      +
    111F  ASN*     3.1    19.7    +      -       -      +
    113F  SER*     1.3    78.5    -      -       -      +
    115F  LEU*     1.3    73.5    +      -       +      +
    117F  LEU*     3.2     8.4    +      -       +      +
    118F  HIS*     3.1    20.4    +      -       +      +
    143F  VAL*     3.3    42.9    -      -       +      +
    145F  ALA*     4.4    11.9    -      -       +      -
    148F  GLN*     3.4    26.7    -      -       +      +
    127G  PRO*     6.3     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 115 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111F  ASN*     3.0    41.8    +      -       -      +
    112F  GLN*     3.2     8.9    +      -       -      +
    114F  LEU*     1.3    84.6    -      -       +      +
    116F  GLU*     1.3    61.9    +      -       -      +
    118F  HIS*     3.2     6.3    +      -       -      +
    119F  LYS*     3.0    25.6    +      -       -      +
    145F  ALA*     5.3     4.5    -      -       +      -
     10G  GLN*     5.0     3.6    -      -       +      +
     11G  ASN*     3.5    34.8    -      -       +      +
    125G  ASN*     3.8    15.2    +      -       -      +
    126G  ASP*     6.0     0.2    -      -       -      +
    127G  PRO*     3.9    29.2    -      -       +      -
    128G  HIS*     5.5     4.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 116 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19F  ALA*     5.5     0.7    -      -       -      -
     22F  ARG*     5.7     4.2    +      -       -      +
    112F  GLN*     3.3    24.9    +      -       -      +
    113F  SER*     3.8    18.1    +      -       -      +
    114F  LEU      3.3     0.2    -      -       -      -
    115F  LEU*     1.3    74.4    -      -       +      +
    117F  LEU*     1.3    64.2    +      -       -      +
    119F  LYS*     3.3    13.9    +      -       +      +
    120F  LEU*     3.3    31.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 117 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16F  SER*     5.0     3.4    -      -       -      +
     19F  ALA*     3.4    40.3    -      -       +      +
     20F  ILE*     3.6    33.0    -      -       +      -
     23F  GLN*     3.6    20.0    -      -       +      -
     69F  LEU*     4.6    10.3    -      -       +      -
     72F  LEU*     5.2     4.0    -      -       +      -
    113F  SER      3.2    11.1    +      -       -      +
    114F  LEU*     3.2    11.5    +      -       +      +
    116F  GLU*     1.3    78.9    -      -       -      +
    118F  HIS*     1.3    60.7    +      -       -      +
    120F  LEU*     3.7    14.3    +      -       -      +
    143F  VAL*     3.8    26.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 118 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114F  LEU*     3.1    12.7    +      -       +      +
    115F  LEU*     3.2     9.1    +      -       +      +
    117F  LEU*     1.3    77.8    -      -       -      +
    119F  LYS*     1.3    64.5    +      -       -      +
    120F  LEU      3.3     7.1    -      -       -      +
    141F  GLU*     4.5    14.8    +      -       +      +
    143F  VAL*     4.3    26.0    -      -       +      -
    125G  ASN*     4.3     6.4    +      -       -      -
    127G  PRO*     3.4    43.1    -      -       +      +
    130G  CYS*     6.4     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 119 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115F  LEU      3.0    13.7    +      -       -      +
    116F  GLU*     3.7    16.2    -      -       +      +
    117F  LEU      3.3     0.4    -      -       -      -
    118F  HIS*     1.3    74.5    -      -       -      +
    120F  LEU*     1.3    70.4    +      -       +      +
    125G  ASN*     3.5    36.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 120 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15F  ASP*     4.2    23.1    -      -       +      +
     16F  SER*     4.3    21.1    -      -       -      -
     19F  ALA*     4.1    22.9    -      -       +      -
     22F  ARG*     5.9     0.9    -      -       -      +
    116F  GLU*     3.3    18.4    +      -       +      +
    117F  LEU*     4.1     9.7    -      -       -      +
    118F  HIS      3.3    10.7    -      -       -      +
    119F  LYS*     1.3    87.7    -      -       +      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il