Contacts of the helix formed by residues 690 - 714 (chain C) in PDB entry 6NYY


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 690 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    687B  LYS*     3.6     6.5    -      -       -      +
    691B  GLU*     3.3    13.0    -      -       -      -
    694B  ALA*     3.4    24.3    +      -       -      -
    695B  ARG*     3.9     4.5    -      -       -      -
    698B  ASP*     2.9    15.9    +      -       -      +
    687C  LYS*     5.2     0.8    -      -       -      +
    689C  TYR*     1.3    83.1    -      -       -      +
    691C  GLU*     1.3    60.0    +      -       -      +
    692C  ALA*     3.5     6.1    +      -       -      +
    693C  THR*     2.7    32.7    +      -       -      -
    694C  ALA*     3.0    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 691 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    691B  GLU*     2.5    32.2    +      -       +      +
    687C  LYS*     6.3     2.0    -      -       +      -
    689C  TYR      5.5     0.9    -      -       -      +
    690C  SER*     1.3    71.5    -      -       -      +
    692C  ALA*     1.3    56.5    +      -       -      +
    693C  THR      3.2     0.2    -      -       -      -
    694C  ALA*     3.8    10.0    -      -       +      +
    695C  ARG*     3.0    26.7    +      -       -      +
    686D  GLU*     5.6     2.1    -      -       -      +
    690D  SER*     4.7     3.5    -      -       -      -
    691D  GLU*     4.3    30.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 692 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    691B  GLU*     3.6     4.3    +      -       +      +
    695B  ARG*     3.7    44.6    -      -       +      +
    690C  SER*     3.2     4.8    +      -       -      +
    691C  GLU*     1.3    76.5    -      -       -      +
    693C  THR*     1.3    60.2    +      -       -      +
    695C  ARG*     3.9    22.0    +      -       -      +
    696C  LEU*     3.5    17.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 693 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    698B  ASP*     3.5    19.1    -      -       +      +
    699B  ASP*     5.5     0.9    +      -       -      -
    702B  ARG*     3.7    21.9    +      -       -      +
    670C  VAL*     5.2     7.0    -      -       +      -
    675C  PHE*     5.6     6.3    -      -       +      -
    689C  TYR*     3.7    19.7    -      -       +      -
    690C  SER*     2.7    28.1    +      -       -      -
    692C  ALA*     1.3    77.4    -      -       -      +
    694C  ALA*     1.3    59.5    +      -       -      +
    695C  ARG      3.2     0.2    -      -       -      -
    696C  LEU*     2.9     9.2    +      -       +      +
    697C  ILE*     2.8    38.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 694 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    687C  LYS*     3.5    30.1    -      -       +      +
    689C  TYR*     3.7    19.6    -      -       +      +
    690C  SER      3.0    12.6    +      -       -      +
    691C  GLU*     4.1     8.5    -      -       +      +
    693C  THR*     1.3    73.2    -      -       -      +
    695C  ARG*     1.3    64.8    +      -       -      +
    697C  ILE*     3.8     6.2    -      -       -      +
    698C  ASP*     3.2    21.7    +      -       -      +
    690D  SER*     3.3    18.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 695 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    695B  ARG*     4.5    18.6    -      -       -      +
    691C  GLU      3.0    19.3    +      -       -      +
    692C  ALA*     4.0    18.8    +      -       -      +
    693C  THR      3.2     0.2    -      -       -      -
    694C  ALA*     1.3    77.4    -      -       -      +
    696C  LEU*     1.3    63.2    +      -       -      +
    698C  ASP*     4.2     1.1    -      -       -      +
    699C  ASP*     2.9    46.3    +      -       -      +
    690D  SER*     3.8     9.6    -      -       -      -
    692D  ALA*     3.7    32.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 696 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    702B  ARG*     4.5    21.5    -      -       -      +
    669C  LYS*     3.8    46.9    -      -       +      +
    670C  VAL*     4.2    18.4    -      -       +      -
    692C  ALA      3.5    11.4    +      -       -      +
    693C  THR*     2.9    11.0    +      -       +      +
    695C  ARG*     1.3    80.1    -      -       -      +
    697C  ILE*     1.3    64.1    +      -       -      +
    699C  ASP*     3.6     8.8    +      -       +      +
    700C  GLU*     3.2    31.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 697 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    658C  TYR*     4.0    20.9    -      -       +      -
    661C  ILE*     4.3     9.1    -      -       +      +
    662C  VAL*     3.7    31.4    -      -       +      -
    670C  VAL*     4.3    22.7    -      -       +      -
    675C  PHE*     5.5     3.6    -      -       +      -
    689C  TYR*     3.5    41.3    -      -       +      +
    693C  THR*     2.8    23.5    +      -       +      +
    694C  ALA*     4.0     5.4    -      -       -      +
    695C  ARG      3.3     0.2    -      -       -      -
    696C  LEU*     1.3    76.6    -      -       -      +
    698C  ASP*     1.3    58.8    +      -       -      +
    700C  GLU*     2.9    21.8    +      -       -      +
    701C  VAL*     2.9    15.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 698 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    658C  TYR*     2.2    43.1    +      -       -      +
    687C  LYS*     5.0     0.9    +      -       -      -
    694C  ALA*     3.2    11.7    +      -       -      +
    695C  ARG      4.4     2.0    -      -       -      +
    697C  ILE*     1.3    78.1    -      -       -      +
    699C  ASP*     1.3    63.5    +      -       -      +
    700C  GLU      3.4     0.2    +      -       -      -
    701C  VAL*     4.2     3.6    -      -       -      +
    702C  ARG*     3.4    30.9    +      -       -      +
    689D  TYR*     3.4     7.2    -      -       -      +
    690D  SER*     2.7    38.5    +      -       -      +
    693D  THR*     3.3    21.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 699 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    695C  ARG*     2.9    40.4    +      -       -      +
    696C  LEU*     3.9     9.9    -      -       +      +
    697C  ILE      3.2     0.6    -      -       -      -
    698C  ASP*     1.3    77.5    -      -       -      +
    700C  GLU*     1.3    61.6    +      -       +      +
    702C  ARG*     3.1    25.3    +      -       -      +
    703C  ILE*     3.2    31.4    +      -       +      +
    692D  ALA*     6.1     0.5    -      -       -      +
    693D  THR*     5.5     0.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 700 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    661C  ILE*     3.7     8.6    -      -       +      +
    667C  ASN*     3.3    37.7    +      -       -      +
    669C  LYS*     3.2    40.7    +      -       +      +
    670C  VAL*     4.7     1.6    -      -       +      -
    696C  LEU*     3.2    17.9    -      -       +      +
    697C  ILE*     2.9     9.2    +      -       -      +
    699C  ASP*     1.3    80.1    -      -       -      +
    701C  VAL*     1.3    60.4    +      -       -      +
    702C  ARG      3.2     0.9    -      -       -      -
    703C  ILE*     3.5    25.5    +      -       -      +
    704C  LEU*     3.0    27.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 701 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    654C  THR      4.9     0.4    -      -       -      +
    657C  ALA*     3.6    35.7    -      -       +      +
    658C  TYR*     3.7    47.3    -      -       +      +
    661C  ILE*     4.0     8.1    -      -       +      -
    697C  ILE*     2.9    20.8    +      -       +      +
    698C  ASP      4.2     4.5    -      -       -      +
    699C  ASP      3.7     0.2    -      -       -      -
    700C  GLU*     1.3    75.2    -      -       -      +
    702C  ARG*     1.3    58.3    +      -       -      +
    704C  LEU*     3.1     3.3    +      -       -      +
    705C  ILE*     2.9    43.9    +      -       +      +
    673D  ILE*     4.3     9.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 702 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    698C  ASP*     3.4    21.5    +      -       -      +
    699C  ASP*     3.1    31.4    +      -       -      +
    700C  GLU      3.2     0.4    -      -       -      -
    701C  VAL*     1.3    80.9    -      -       -      +
    703C  ILE*     1.3    57.4    +      -       +      +
    705C  ILE*     4.7     2.8    -      -       -      +
    706C  ASN*     2.6    48.6    +      -       -      +
    668D  GLU      5.6     0.7    -      -       -      +
    669D  LYS      3.5    19.9    +      -       -      -
    670D  VAL*     2.9    26.3    +      -       -      +
    671D  GLY*     4.7     2.2    -      -       -      -
    673D  ILE*     4.4    15.4    -      -       +      +
    693D  THR*     3.6    35.6    +      -       -      +
    696D  LEU*     3.9    19.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 703 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    669C  LYS*     5.3     3.8    -      -       -      +
    699C  ASP*     3.2    20.1    +      -       +      +
    700C  GLU*     3.5    29.2    +      -       -      +
    701C  VAL      3.2     0.2    -      -       -      -
    702C  ARG*     1.3    77.0    -      -       +      +
    704C  LEU*     1.3    60.4    +      -       -      +
    706C  ASN*     3.5     3.4    +      -       -      +
    707C  ASP*     2.9    51.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 704 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    618C  LYS*     5.8     8.3    -      -       -      -
    622C  LEU*     4.8    15.8    -      -       +      +
    625C  MET*     4.2     9.4    -      -       +      -
    657C  ALA*     3.7    32.3    -      -       +      +
    660C  GLN*     3.3    27.6    -      -       -      +
    661C  ILE*     4.2    11.9    -      -       +      -
    700C  GLU      3.0    17.5    +      -       -      +
    701C  VAL      3.1     4.5    +      -       -      +
    703C  ILE*     1.3    78.3    -      -       -      +
    705C  ILE*     1.3    58.2    +      -       -      +
    707C  ASP*     3.4     9.1    +      -       +      +
    708C  ALA*     3.0    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 705 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    625C  MET*     3.9    13.9    -      -       +      -
    629C  LEU*     4.1     9.2    -      -       +      -
    653C  VAL*     3.7    43.1    -      -       +      +
    654C  THR*     4.4     3.6    -      -       -      -
    657C  ALA*     3.9     5.2    -      -       +      -
    701C  VAL*     2.9    30.0    +      -       +      +
    702C  ARG*     4.7     2.9    -      -       -      +
    704C  LEU*     1.3    76.8    -      -       -      +
    706C  ASN*     1.3    54.5    +      -       -      +
    708C  ALA*     3.0     3.5    +      -       -      +
    709C  TYR*     2.5    36.1    +      -       +      +
    672D  GLN*     4.0    27.6    -      -       +      +
    673D  ILE*     3.7    27.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 706 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    702C  ARG*     2.6    39.3    +      -       -      +
    703C  ILE*     4.0     4.0    -      -       -      +
    704C  LEU      3.4     0.4    -      -       -      -
    705C  ILE*     1.3    80.2    -      -       -      +
    707C  ASP*     1.3    59.5    +      -       -      +
    709C  TYR*     3.8    15.5    -      -       +      +
    710C  LYS*     3.0    44.1    +      -       +      +
    668D  GLU      5.6     2.6    +      -       -      -
    671D  GLY*     5.0    11.7    -      -       -      -
    672D  GLN*     5.1     6.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 707 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    622C  LEU*     5.1     5.0    -      -       +      +
    703C  ILE*     2.9    39.7    +      -       -      +
    704C  LEU*     3.7    10.0    -      -       +      +
    706C  ASN*     1.3    78.8    -      -       -      +
    708C  ALA*     1.3    60.2    +      -       -      +
    710C  LYS*     4.4     8.9    +      -       -      +
    711C  ARG*     3.5    21.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 708 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    622C  LEU*     3.8    21.2    -      -       +      +
    625C  MET*     4.0    23.8    -      -       +      -
    626C  CYS*     3.3    20.6    -      -       -      +
    629C  LEU*     4.1     7.9    -      -       +      +
    704C  LEU      3.0    13.3    +      -       -      +
    705C  ILE*     3.0     9.0    +      -       -      +
    707C  ASP*     1.3    76.3    -      -       -      +
    709C  TYR*     1.3    61.1    +      -       -      +
    712C  THR*     3.1    24.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 709 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    629C  LEU*     3.8    15.9    -      -       +      -
    632C  ARG*     5.3     5.1    +      -       +      +
    633C  VAL*     3.6    25.6    -      -       +      +
    636C  GLU*     4.0    28.8    +      -       -      +
    642C  ILE*     5.9     1.4    -      -       -      +
    705C  ILE*     2.5    20.7    +      -       +      +
    706C  ASN*     3.8    16.4    -      -       -      +
    707C  ASP      3.2     0.2    -      -       -      -
    708C  ALA*     1.3    72.9    -      -       -      +
    710C  LYS*     1.3    69.7    +      -       +      +
    712C  THR*     3.2     5.5    +      -       -      -
    713C  VAL*     3.0    42.9    +      -       +      +
    672D  GLN*     3.1    44.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 710 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    706C  ASN*     3.0    29.3    +      -       +      +
    707C  ASP*     4.5     8.9    +      -       -      +
    709C  TYR*     1.3    83.7    -      -       +      +
    711C  ARG*     1.3    56.9    +      -       -      +
    713C  VAL*     3.9     6.8    -      -       -      +
    714C  ALA*     3.1    29.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 711 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    585C  LEU*     3.9    19.3    -      -       +      +
    586C  GLU      6.0     0.6    -      -       -      +
    619C  GLU*     5.2     2.2    +      -       -      +
    622C  LEU*     3.4    28.2    -      -       -      +
    623C  ASP*     2.8    34.8    +      -       -      -
    626C  CYS*     3.6    16.6    -      -       +      -
    707C  ASP      3.5    17.2    +      -       -      +
    708C  ALA      3.9     5.2    -      -       -      +
    709C  TYR      3.2     0.8    -      -       -      -
    710C  LYS*     1.3    78.7    -      -       -      +
    712C  THR*     1.3    57.0    +      -       -      +
    714C  ALA*     3.4     5.7    -      -       -      +
    715C  LEU*     3.1    26.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 712 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    581C  ALA*     4.8     3.4    -      -       +      -
    626C  CYS*     2.8    37.0    +      -       -      +
    629C  LEU*     4.6     3.1    -      -       -      +
    630C  GLY*     3.7    24.2    -      -       -      +
    633C  VAL*     3.8    15.9    -      -       +      +
    708C  ALA      3.1    13.8    +      -       -      -
    709C  TYR*     3.2     9.2    +      -       -      -
    711C  ARG*     1.3    76.5    -      -       -      +
    713C  VAL*     1.3    58.9    +      -       -      +
    715C  LEU*     2.9     9.1    +      -       +      +
    716C  LEU*     2.9    38.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 713 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    633C  VAL*     3.7    22.0    -      -       +      -
    636C  GLU*     4.9    10.5    -      -       -      +
    637C  ILE*     4.5     6.1    -      -       +      +
    709C  TYR*     3.0    49.7    +      -       +      +
    710C  LYS*     4.1     6.5    -      -       -      +
    712C  THR*     1.3    74.4    -      -       -      +
    714C  ALA*     1.3    57.2    +      -       -      +
    715C  LEU      3.3     2.3    +      -       -      -
    716C  LEU      4.2     0.3    -      -       -      -
    717C  THR*     3.2    29.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 714 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    710C  LYS      3.1    19.7    +      -       -      +
    711C  ARG*     3.4     7.0    -      -       -      +
    712C  THR      3.2     0.2    -      -       -      -
    713C  VAL*     1.3    74.5    -      -       -      +
    715C  LEU*     1.3    54.6    +      -       -      +
    717C  THR*     4.1     8.3    -      -       +      -
    718C  GLU*     2.9    22.3    -      -       -      +
----------------------------------------------------------
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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