Contacts of the helix formed by residues 222 - 243 (chain G) in PDB entry 2AAZ


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 222 (chain G).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69G  LYS*     4.5     4.1    +      -       -      +
    219G  ASP*     3.1    13.8    +      -       -      +
    221G  GLY*     1.3    79.8    -      -       -      +
    223G  GLY*     1.3    64.5    +      -       -      +
    225G  PRO*     3.6     8.2    -      -       -      +
    226G  PHE*     3.8    18.7    -      -       -      -
    262G  HIS*     3.7    13.2    -      -       +      -
    313G  MET*     3.7    24.9    -      -       +      +
    314G  LYS      3.7     5.6    -      -       -      +
    315G  MET*     3.6    44.9    -      -       +      +
   2651G  CB3      3.5    61.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 223 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    219G  ASP      2.9    14.0    +      -       -      -
    222G  LEU*     1.3    68.5    -      -       -      +
    224G  VAL*     1.3    57.9    +      -       -      -
    225G  PRO      3.2     2.5    -      -       -      -
    226G  PHE*     2.8    23.9    +      -       -      +
    227G  ASN*     2.9    18.9    +      -       -      +
    650G  UMP      3.9     4.3    -      -       -      -
   2651G  CB3      3.1    36.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 224 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23G  TYR*     3.9    15.3    -      -       +      -
     54G  PHE*     4.6     0.2    -      -       +      -
    215G  GLN*     4.4     6.3    -      -       -      +
    218G  CYS*     3.8    26.2    -      -       +      -
    219G  ASP      3.0    13.1    +      -       -      +
    220G  LEU*     3.7    21.5    -      -       +      +
    223G  GLY*     1.3    70.3    -      -       -      -
    225G  PRO*     1.3    70.4    -      -       +      +
    227G  ASN*     3.7     7.8    +      -       -      -
    228G  ILE*     2.9    48.0    +      -       +      +
    251G  LEU*     4.6     2.9    -      -       +      -
    253G  MET*     4.2    18.4    -      -       +      -
    650G  UMP      4.6     0.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 225 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23G  TYR*     3.6    19.1    -      -       +      +
     64G  PRO      5.4     0.7    -      -       -      +
     65G  LEU*     5.4     0.7    -      -       -      +
     66G  LEU*     3.7    32.9    +      -       +      +
     69G  LYS*     4.0    17.5    -      -       -      +
     71G  VAL*     4.5    14.1    -      -       +      +
    220G  LEU      3.3    14.8    -      -       -      +
    221G  GLY      3.6    10.3    -      -       -      +
    222G  LEU      3.6    10.3    -      -       -      +
    223G  GLY      3.3     5.2    -      -       -      -
    224G  VAL*     1.3    90.3    -      -       +      +
    226G  PHE*     1.3    65.1    +      -       +      +
    228G  ILE*     4.1     3.5    -      -       +      +
    229G  ALA*     3.4    19.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 226 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69G  LYS*     6.5     0.2    -      -       -      -
     71G  VAL*     4.3    16.6    -      -       +      -
     72G  PHE*     3.8    27.1    -      +       +      -
     75G  GLY      3.9     6.1    -      -       -      -
     76G  VAL*     3.4    41.3    -      -       +      +
     79G  GLU*     4.3     7.4    -      -       -      +
    100G  ILE*     4.2    15.7    -      -       +      -
    222G  LEU      3.8     6.5    -      -       -      -
    223G  GLY      2.8     9.5    +      -       -      +
    225G  PRO*     1.3    80.5    -      -       +      +
    227G  ASN*     1.3    59.8    +      -       -      +
    229G  ALA*     3.3     1.9    +      -       -      +
    230G  SER*     2.8    33.9    +      -       -      -
   2651G  CB3      3.6    73.4    -      +       +      -
----------------------------------------------------------
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Residues in contact with ASN 227 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188G  HIS*     3.4    23.0    +      -       -      +
    213G  MET*     4.0     9.9    -      -       +      -
    215G  GLN*     2.9    41.0    +      -       -      +
    223G  GLY      2.9    19.3    +      -       -      +
    224G  VAL*     3.7     6.2    +      -       -      +
    226G  PHE*     1.3    75.1    -      -       -      +
    228G  ILE*     1.3    62.6    +      -       -      +
    230G  SER*     4.2     5.5    -      -       -      -
    231G  TYR*     3.1    31.7    +      -       -      +
    249G  PHE*     4.6     0.9    -      -       -      -
    251G  LEU*     4.9     2.5    -      -       +      -
    650G  UMP      3.1    30.2    +      -       -      -
   2651G  CB3      3.7     5.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 228 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23G  TYR*     4.6     7.6    -      -       +      -
     54G  PHE*     4.2     9.4    -      -       +      -
     56G  PHE*     3.7    40.4    -      -       +      -
     64G  PRO*     3.6    28.5    -      -       +      +
     66G  LEU*     4.7    12.3    -      -       +      -
    224G  VAL*     2.9    37.5    +      -       +      +
    225G  PRO*     4.1     4.3    -      -       +      +
    227G  ASN*     1.3    76.6    -      -       -      +
    229G  ALA*     1.3    64.8    +      -       -      +
    232G  ALA*     3.1    22.0    +      -       -      +
    249G  PHE*     3.9    11.9    -      -       +      -
    251G  LEU*     3.7    20.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 229 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63G  LEU*     4.6     7.0    -      -       +      -
     64G  PRO      4.3     9.6    -      -       -      +
     65G  LEU*     3.9    28.5    -      -       +      -
     73G  LEU*     5.8     0.4    -      -       +      -
     76G  VAL*     4.0    15.7    -      -       +      -
    225G  PRO      3.4    13.5    +      -       -      +
    226G  PHE      3.3     3.0    +      -       -      +
    228G  ILE*     1.3    79.7    -      -       -      +
    230G  SER*     1.3    57.9    +      -       -      +
    232G  ALA*     3.3     6.3    +      -       -      +
    233G  LEU*     2.8    37.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 230 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76G  VAL*     3.7    15.3    -      -       -      +
     79G  GLU*     4.7     7.7    +      -       -      -
     80G  LEU*     3.7    25.9    -      -       -      +
     83G  PHE*     4.5    13.0    -      -       -      -
    131G  TRP*     6.1     0.2    -      -       -      -
    226G  PHE      2.8    24.4    +      -       -      -
    227G  ASN*     3.7     7.4    -      -       -      -
    229G  ALA*     1.3    72.2    -      -       -      +
    231G  TYR*     1.3    66.1    +      -       -      +
    233G  LEU*     3.1     6.7    +      -       -      +
    234G  LEU*     2.8    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 231 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131G  TRP*     3.3    21.0    +      +       -      -
    171G  LEU      5.8     0.2    +      -       -      -
    188G  HIS*     2.5    53.5    +      +       +      +
    190G  PHE*     5.3     3.6    +      -       -      -
    191G  CYS*     3.8    19.9    -      -       -      +
    211G  CYS*     4.2    14.1    -      -       -      -
    213G  MET*     3.7    34.0    -      -       +      +
    227G  ASN*     3.1    17.7    +      -       -      +
    230G  SER*     1.3    83.2    -      -       -      +
    232G  ALA*     1.3    66.6    +      -       -      +
    234G  LEU*     3.7    21.9    -      -       +      +
    235G  THR*     2.9    27.9    +      -       -      -
    249G  PHE*     3.5    26.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 232 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58G  LEU*     3.8    16.3    -      -       +      +
     63G  LEU*     4.0     5.4    -      -       +      -
     64G  PRO*     3.5    34.3    -      -       +      -
    228G  ILE      3.1    20.5    +      -       -      +
    229G  ALA      3.6     4.0    -      -       -      +
    231G  TYR*     1.3    79.1    -      -       -      +
    233G  LEU*     1.3    62.8    +      -       -      +
    235G  THR*     3.3     2.9    +      -       -      -
    236G  HIS*     3.1    30.1    +      -       +      -
    249G  PHE*     4.7     6.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 233 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63G  LEU*     3.7    31.0    -      -       +      -
     73G  LEU*     4.6     8.3    -      -       +      -
     76G  VAL*     3.9    22.7    -      -       +      -
     77G  ILE*     4.1    21.3    -      -       +      +
     80G  LEU*     3.7    15.7    -      -       +      -
    229G  ALA*     2.8    24.9    +      -       +      +
    230G  SER*     3.1     4.7    +      -       -      +
    232G  ALA*     1.3    75.2    -      -       -      +
    234G  LEU*     1.3    58.8    +      -       -      +
    236G  HIS*     3.1     5.2    +      -       -      +
    237G  MET*     2.8    33.1    +      -       -      +
    280G  LEU*     4.0    16.4    -      -       +      -
    300G  PHE*     3.9    24.0    -      -       +      -
    302G  VAL*     5.5     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 234 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80G  LEU*     3.7    21.9    -      -       +      +
     84G  VAL*     4.6    11.2    -      -       +      -
    131G  TRP*     4.0    17.3    -      -       +      -
    153G  LEU*     4.7     8.1    -      -       +      -
    171G  LEU*     3.9    26.7    -      -       +      -
    193G  PHE*     4.3     9.0    -      -       +      -
    230G  SER      2.8    15.8    +      -       -      +
    231G  TYR*     3.7    23.8    -      -       +      +
    233G  LEU*     1.3    74.9    -      -       -      +
    235G  THR*     1.3    58.1    +      -       -      +
    237G  MET*     3.2    12.6    +      -       -      +
    238G  ILE*     2.8    53.8    +      -       +      +
    292G  ILE*     4.9     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 235 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58G  LEU*     3.7    24.5    -      -       +      +
    193G  PHE*     4.0     9.5    -      -       +      -
    209G  LEU*     3.7    32.6    -      -       +      +
    210G  SER      4.9     0.4    -      -       -      -
    211G  CYS*     3.3    30.3    -      -       +      +
    231G  TYR      2.9    17.8    +      -       -      -
    232G  ALA*     3.5     5.6    -      -       -      -
    234G  LEU*     1.3    74.5    -      -       -      +
    236G  HIS*     1.3    58.8    +      -       -      +
    238G  ILE*     4.6     1.1    -      -       -      -
    239G  ALA*     2.8    29.5    +      -       -      +
    246G  PRO*     4.5     4.7    -      -       +      -
    249G  PHE*     5.1     0.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 236 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58G  LEU*     3.7    28.4    -      -       +      +
     61G  ASN*     4.1    16.5    +      -       -      -
     62G  THR      2.9    28.9    +      -       -      -
     63G  LEU*     4.6     6.7    -      -       +      -
    232G  ALA      3.1    31.2    +      -       -      -
    233G  LEU*     3.5     7.0    -      -       -      +
    235G  THR*     1.3    75.4    -      -       -      +
    237G  MET*     1.3    62.4    +      -       -      +
    239G  ALA*     3.3     7.5    +      -       -      +
    240G  LEU*     3.1    18.5    +      -       -      +
    246G  PRO*     3.6    19.4    -      -       +      +
    280G  LEU*     3.5    35.1    -      -       +      +
    282G  TRP*     3.7    13.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 237 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80G  LEU*     3.5    32.5    -      -       -      -
     81G  LEU*     3.8    16.4    -      -       +      -
     84G  VAL*     4.3    11.0    -      -       +      -
    233G  LEU      2.8    14.6    +      -       -      +
    234G  LEU*     3.2    11.9    +      -       -      +
    236G  HIS*     1.3    77.1    -      -       -      +
    238G  ILE*     1.3    64.0    +      -       -      +
    240G  LEU*     3.1    14.0    +      -       -      +
    241G  ILE*     3.2    17.0    +      -       -      +
    282G  TRP*     3.8    19.7    -      -       +      -
    292G  ILE*     4.1    22.2    -      -       +      +
    295G  PHE*     3.6    42.0    -      -       +      -
    300G  PHE*     3.8    12.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 238 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153G  LEU*     4.3    12.6    -      -       +      -
    156G  VAL*     4.5     4.5    -      -       +      -
    157G  ILE*     3.6    26.2    -      -       +      -
    160G  ILE*     3.6    30.5    -      -       +      -
    193G  PHE*     3.4    36.8    -      -       +      -
    209G  LEU*     3.8     9.4    -      -       +      -
    234G  LEU*     2.8    34.1    +      -       +      +
    235G  THR      3.9     3.1    -      -       -      +
    237G  MET*     1.3    72.7    -      -       -      +
    239G  ALA*     1.3    62.2    +      -       -      +
    241G  ILE*     3.3     1.9    +      -       -      +
    242G  THR*     2.7    30.4    +      -       +      +
    292G  ILE*     4.1    11.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 239 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209G  LEU*     3.8     4.9    -      -       +      +
    235G  THR      2.8    19.6    +      -       -      +
    236G  HIS      3.5     5.6    -      -       -      +
    238G  ILE*     1.3    78.0    -      -       -      +
    240G  LEU*     1.3    62.6    +      -       -      +
    243G  ASP*     3.0     6.1    +      -       -      -
    244G  THR*     3.0    54.7    +      -       -      +
    246G  PRO*     3.6    25.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 240 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236G  HIS      3.1    12.4    +      -       -      +
    237G  MET      3.1     8.7    +      -       -      +
    239G  ALA*     1.3    78.7    -      -       -      +
    241G  ILE*     1.3    64.0    +      -       +      +
    243G  ASP*     3.6     7.8    +      -       -      +
    282G  TRP*     3.6    40.8    -      -       +      +
    285G  SER*     5.3     0.4    -      -       -      -
    286G  LYS*     3.6    45.4    -      -       +      +
    289G  ILE*     3.6    30.3    -      -       +      -
    295G  PHE*     3.9     8.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 241 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157G  ILE*     3.9    27.1    -      -       +      -
    161G  LYS*     3.9    13.4    +      -       +      +
    237G  MET      3.2    13.5    +      -       -      +
    238G  ILE      3.3     5.1    +      -       -      +
    240G  LEU*     1.3    81.3    -      -       +      +
    242G  THR*     1.3    59.9    +      -       -      +
    286G  LYS*     3.7    24.5    +      -       +      +
    289G  ILE*     4.3     7.0    -      -       +      -
    290G  GLY      4.1     9.4    -      -       -      +
    291G  ASP*     3.6    40.2    -      -       +      +
    292G  ILE*     3.9    14.4    -      -       +      +
    295G  PHE*     3.8    22.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 242 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157G  ILE*     3.7    35.9    -      -       +      +
    160G  ILE*     3.7    21.7    -      -       +      +
    161G  LYS*     3.7    21.0    -      -       +      +
    238G  ILE*     2.7    32.7    +      -       +      +
    239G  ALA      3.5     0.3    +      -       -      -
    241G  ILE*     1.3    78.8    -      -       -      +
    243G  ASP*     1.3    70.4    +      -       -      +
    244G  THR*     2.8    31.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 243 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161G  LYS*     6.1     0.9    -      -       -      -
    206G  LYS*     3.9    29.6    +      -       -      +
    207G  PRO*     3.9     7.1    -      -       -      +
    239G  ALA      3.0     6.0    +      -       -      -
    240G  LEU      3.6     2.9    +      -       -      +
    241G  ILE      3.5     1.4    -      -       -      -
    242G  THR*     1.3    80.0    -      -       -      +
    244G  THR*     1.3    61.2    +      -       -      +
    286G  LYS*     2.7    42.5    +      -       -      +
----------------------------------------------------------
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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