Contacts of the helix formed by residues 164 - 185 (chain C) in PDB entry 1Z6Z


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 TRP 164 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101C  LEU*     4.9     5.2    -      -       +      -
    104C  VAL*     3.6    24.4    -      -       +      +
    156C  CYS*     3.4    32.1    -      -       -      -
    161C  PHE*     3.1    29.0    +      +       +      +
    162C  LYS      3.6    10.6    +      -       -      -
    163C  GLY*     1.3    85.9    -      -       -      +
    165C  ALA*     1.3    63.1    +      -       -      +
    166C  LEU      3.4     2.9    +      -       -      -
    167C  TYR*     3.4    15.5    +      +       +      -
    168C  CYS*     2.9    29.9    +      -       -      -
    203C  GLN*     5.9     3.4    -      -       -      -
    206C  ALA*     3.7    28.5    -      -       +      -
    210C  SER*     3.1    25.0    +      -       -      -
    215C  MET*     4.1    18.2    -      -       +      +
    219C  LEU*     4.0    18.2    -      -       +      -
    406C   CL      4.4    10.5    -      -       +      -
    180D  VAL*     4.3     0.2    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 165 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108C  PHE*     3.9    19.7    -      -       +      -
    111C  LEU*     4.0    15.7    -      -       +      +
    163C  GLY      3.4     4.4    +      -       -      -
    164C  TRP*     1.3    76.1    -      -       -      +
    166C  LEU*     1.3    58.7    +      -       -      +
    168C  CYS*     4.0     0.9    -      -       -      +
    169C  ALA*     2.9    32.7    +      -       -      +
    177D  LEU*     3.6    18.5    -      -       +      +
    180D  VAL*     3.8    26.8    -      -       +      +
    184D  GLU*     4.9     2.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 166 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101C  LEU      5.0     3.1    -      -       -      +
    102C  GLY*     5.1     7.0    -      -       -      -
    103C  ASP      5.3     4.7    -      -       -      +
    111C  LEU*     4.1    26.2    -      -       +      +
    116C  GLN*     5.0     7.2    -      -       +      +
    117C  VAL*     4.1    15.7    -      -       +      -
    120C  TYR*     3.3    48.6    -      -       +      -
    121C  TRP*     3.7    24.3    -      -       +      -
    164C  TRP      3.4     0.4    -      -       -      -
    165C  ALA*     1.3    77.8    -      -       -      +
    167C  TYR*     1.3    58.6    +      -       -      +
    169C  ALA*     3.9     1.0    -      -       -      +
    170C  GLY      2.9    24.8    +      -       -      -
    129D  LEU*     3.6    31.0    -      -       +      -
    177D  LEU*     4.8     0.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 167 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100C  SER      3.5    22.9    -      -       -      -
    101C  LEU*     3.7    32.0    +      -       +      +
    120C  TYR*     3.3     8.8    +      -       -      -
    124C  ASN*     5.9     0.2    -      -       -      -
    154C  SER*     3.9     3.5    -      -       -      -
    156C  CYS*     3.7    31.6    -      -       +      -
    164C  TRP*     3.4    16.1    +      +       +      +
    165C  ALA      3.3     0.2    -      -       -      -
    166C  LEU*     1.3    80.3    -      -       -      +
    168C  CYS*     1.3    56.9    +      -       -      +
    170C  GLY*     3.2     2.1    +      -       -      -
    171C  LYS*     2.9    49.5    +      -       +      +
    202C  MET*     4.1    12.4    -      -       -      -
    406C   CL      3.3    31.2    -      -       +      +
    803C  NAP      2.7    41.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 168 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156C  CYS*     3.5    31.2    -      -       -      +
    159C  GLN      3.7    21.5    -      -       -      -
    161C  PHE*     3.8    17.7    -      -       -      -
    164C  TRP*     2.9    30.2    +      -       -      +
    167C  TYR*     1.3    75.3    -      -       -      +
    169C  ALA*     1.3    57.7    +      -       -      +
    171C  LYS      3.3     1.0    +      -       -      -
    172C  ALA*     2.9    25.8    +      -       -      +
    176D  MET*     3.5    24.4    -      -       +      +
    180D  VAL*     3.9    11.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 169 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121C  TRP*     3.9    11.4    -      -       +      -
    165C  ALA      2.9    19.3    +      -       -      +
    166C  LEU      3.9     2.9    -      -       -      +
    168C  CYS*     1.3    75.3    -      -       -      +
    170C  GLY*     1.3    58.5    -      -       -      +
    172C  ALA*     3.4     1.7    +      -       -      +
    173C  ALA*     3.0    28.6    +      -       -      +
    173D  ALA*     3.6    17.1    -      -       +      +
    176D  MET*     3.6    12.2    -      -       -      +
    177D  LEU*     3.6    29.8    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 170 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120C  TYR*     4.8     6.1    -      -       -      -
    121C  TRP*     4.0    10.4    -      -       -      -
    124C  ASN*     5.4     2.9    -      -       -      -
    125C  LEU*     3.5    16.4    -      -       -      +
    166C  LEU      2.9    18.3    +      -       -      -
    167C  TYR      3.7     0.9    -      -       -      -
    169C  ALA*     1.3    76.4    -      -       -      +
    171C  LYS*     1.3    56.5    +      -       -      +
    173C  ALA*     3.3     1.1    +      -       -      -
    174C  ARG*     2.9    39.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 171 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99C  GLY*     5.4     2.8    -      -       -      -
    124C  ASN*     5.6     2.5    +      -       -      -
    151C  ASN*     5.9     0.2    -      -       -      +
    152C  ILE      2.9    27.2    +      -       -      +
    153C  SER*     4.2    13.5    -      -       -      +
    154C  SER*     4.0    12.3    -      -       -      -
    156C  CYS*     4.2     0.7    -      -       +      -
    157C  ALA*     3.6    27.1    -      -       +      +
    167C  TYR*     2.9    39.8    +      -       +      +
    168C  CYS      3.8     1.3    -      -       -      +
    170C  GLY*     1.3    77.1    -      -       -      +
    172C  ALA*     1.3    61.4    +      -       -      +
    174C  ARG*     3.3    26.8    +      -       +      +
    175C  ASP*     3.0    27.2    +      -       -      +
    803C  NAP      3.0    39.3    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 172 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157C  ALA*     3.6    23.7    -      -       -      +
    168C  CYS      2.9    18.4    +      -       -      +
    169C  ALA      3.7     4.3    -      -       -      +
    171C  LYS*     1.3    76.4    -      -       -      +
    173C  ALA*     1.3    60.7    +      -       -      +
    175C  ASP*     3.5     4.3    +      -       -      +
    176C  MET*     3.1    23.6    +      -       -      +
    172D  ALA*     4.0    17.4    -      -       +      +
    176D  MET*     3.9    20.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 173 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125C  LEU*     3.5    27.8    -      -       +      -
    169C  ALA      3.0    17.8    +      -       -      +
    172C  ALA*     1.3    73.7    -      -       -      +
    174C  ARG*     1.3    59.6    +      -       -      +
    176C  MET*     3.1     3.0    +      -       -      +
    177C  LEU*     2.9    34.8    +      -       -      +
    121D  TRP*     5.4     0.2    -      -       +      -
    169D  ALA*     3.7    32.0    -      -       +      +
    173D  ALA*     4.0     7.5    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 174 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96C  ASN*     3.3    24.5    +      -       -      +
     98C  ALA      3.8    21.1    +      -       -      -
    123C  LEU      5.1     0.8    +      -       -      -
    124C  ASN*     2.8    41.2    +      -       -      +
    125C  LEU*     3.9     5.8    -      -       +      -
    128C  MET*     3.6    32.8    -      -       +      +
    151C  ASN*     2.9    39.8    +      -       -      +
    152C  ILE      3.5     8.5    +      -       -      -
    170C  GLY      2.9    23.3    +      -       -      +
    171C  LYS*     3.7    30.6    -      -       -      +
    173C  ALA*     1.3    75.1    -      -       -      +
    175C  ASP*     1.3    63.9    +      -       -      +
    177C  LEU*     3.4     9.6    +      -       -      +
    178C  PHE*     3.1    25.8    +      -       -      +
    803C  NAP      4.5     1.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 175 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151C  ASN*     3.0    15.2    +      -       -      -
    153C  SER*     2.6    22.9    +      -       -      -
    157C  ALA*     3.6    14.5    -      -       +      +
    158C  LEU*     4.6     5.1    -      -       +      +
    171C  LYS      3.0    12.4    +      -       -      +
    172C  ALA*     3.7     5.6    -      -       -      +
    174C  ARG*     1.3    77.4    -      -       -      +
    176C  MET*     1.3    57.1    +      -       -      +
    178C  PHE      3.3     0.3    +      -       -      -
    179C  GLN*     2.9    40.9    +      -       -      +
    192C  ASN*     3.4    20.6    +      -       -      +
    252C  HIS*     2.7    31.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 176 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172C  ALA      3.1    17.9    +      -       -      +
    173C  ALA      3.1     4.2    +      -       -      +
    175C  ASP*     1.3    74.8    -      -       -      +
    177C  LEU*     1.3    64.9    +      -       -      +
    179C  GLN*     3.2    17.9    +      -       -      +
    180C  VAL*     3.0    22.9    +      -       -      +
    156D  CYS      3.8     7.0    -      -       -      +
    157D  ALA      3.6    23.6    -      -       -      +
    158D  LEU      3.7    24.0    -      -       -      +
    159D  GLN      3.9     2.0    -      -       -      +
    160D  PRO*     4.0    21.8    -      -       +      -
    168D  CYS*     3.5    41.1    -      -       +      +
    169D  ALA*     3.7     2.5    -      -       -      +
    172D  ALA*     3.9     9.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 177 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125C  LEU*     4.7     9.9    -      -       +      +
    128C  MET*     4.1    22.2    -      -       -      -
    129C  LEU*     4.1    36.1    -      -       +      -
    173C  ALA      2.9    22.0    +      -       -      +
    174C  ARG*     3.6     9.6    -      -       -      +
    176C  MET*     1.3    71.2    -      -       -      +
    178C  PHE*     1.3    64.3    +      -       +      +
    180C  VAL*     3.1    10.5    +      -       -      +
    181C  LEU      3.0    22.7    +      -       -      -
    108D  PHE*     3.6    14.5    -      -       +      -
    121D  TRP*     4.7    10.5    -      -       +      -
    165D  ALA*     3.7    34.8    -      -       +      +
    166D  LEU      4.6     0.7    -      -       -      +
    169D  ALA*     3.7    11.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 178 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96C  ASN*     3.4    24.2    -      -       -      -
    128C  MET*     3.7    19.3    -      -       +      -
    132C  THR*     3.5    31.0    -      -       +      -
    149C  VAL*     3.6    17.5    -      -       +      -
    150C  VAL      3.7     4.0    -      -       -      -
    151C  ASN*     3.6    33.0    -      -       +      -
    174C  ARG      3.1    10.9    +      -       -      +
    177C  LEU*     1.3    82.1    -      -       +      +
    179C  GLN*     1.3    60.3    +      -       -      +
    181C  LEU*     3.4     7.7    +      -       +      +
    182C  ALA*     2.9    25.1    +      -       -      +
    190C  VAL*     3.4    32.2    -      -       +      +
    191C  LEU      4.1     2.2    -      -       -      -
    192C  ASN*     3.4    22.2    -      -       -      +
    250C  GLY*     5.1     0.2    -      -       -      -
    108D  PHE*     4.7     5.6    -      +       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 179 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175C  ASP*     2.9    32.0    +      -       -      +
    176C  MET*     3.2    25.2    +      -       -      +
    178C  PHE*     1.3    76.5    -      -       -      +
    180C  VAL*     1.3    60.4    +      -       -      +
    182C  ALA*     3.5     8.5    +      -       -      +
    183C  LEU*     3.4    23.9    +      -       -      +
    192C  ASN*     4.4     2.2    -      -       -      +
    250C  GLY*     3.7    22.2    -      -       -      +
    158D  LEU      5.0     2.6    +      -       -      +
    160D  PRO*     4.0    28.7    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 180 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176C  MET*     3.0    19.8    +      -       -      +
    177C  LEU      3.1     7.8    +      -       -      +
    179C  GLN*     1.3    75.0    -      -       -      +
    181C  LEU*     1.3    65.2    +      -       -      +
    183C  LEU*     3.1     7.9    +      -       -      +
    184C  GLU*     3.0    41.6    +      -       -      +
    108D  PHE*     4.9     0.7    -      -       +      -
    160D  PRO*     3.8    22.0    -      -       +      -
    161D  PHE      3.6    20.2    -      -       -      +
    165D  ALA*     3.8    26.0    -      -       +      +
    168D  CYS*     4.1    22.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 181 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132C  THR*     3.9    20.2    -      -       +      -
    136C  LEU*     3.9    13.2    -      -       +      -
    149C  VAL*     3.7    30.3    -      -       +      -
    177C  LEU      3.0    12.7    +      -       -      +
    178C  PHE*     3.7    13.0    -      -       +      +
    180C  VAL*     1.3    77.4    -      -       -      +
    182C  ALA*     1.3    56.3    +      -       -      +
    184C  GLU*     4.4     3.4    -      -       +      -
    185C  GLU*     2.8    57.0    +      -       +      +
    188C  VAL*     4.9     0.7    -      -       +      -
    190C  VAL*     4.0     8.3    -      -       +      -
    108D  PHE*     3.6    37.7    -      -       +      -
    109D  VAL*     5.4     0.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 182 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178C  PHE      2.9    18.4    +      -       -      +
    179C  GLN      3.7     5.8    -      -       -      +
    180C  VAL      3.3     0.2    -      -       -      -
    181C  LEU*     1.3    76.0    -      -       -      +
    183C  LEU*     1.3    63.2    +      -       -      +
    185C  GLU      3.8    14.3    -      -       -      +
    186C  PRO*     4.0     7.1    -      -       -      +
    190C  VAL*     3.8    11.6    -      -       +      +
    249C  SER*     3.7    23.3    +      -       -      +
    250C  GLY*     3.6    25.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 183 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    179C  GLN      3.4     8.2    +      -       -      +
    180C  VAL      3.1     9.2    +      -       -      +
    182C  ALA*     1.3    80.1    -      -       +      +
    184C  GLU*     1.3    64.0    +      -       -      +
    186C  PRO*     4.2    10.4    -      -       -      +
    160D  PRO*     3.6    41.5    -      -       +      +
    161D  PHE*     4.4     7.4    -      -       -      +
    162D  LYS*     3.8    32.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 184 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    180C  VAL*     3.0    29.6    +      -       -      +
    181C  LEU*     3.8     5.6    -      -       -      +
    183C  LEU*     1.3    78.5    -      -       -      +
    185C  GLU*     1.3    75.8    +      -       +      +
    186C  PRO*     3.2     9.2    -      -       -      +
    107D  GLY*     3.6     8.0    -      -       -      -
    108D  PHE*     2.9    38.3    +      -       +      +
    162D  LYS*     4.0    16.1    -      -       +      +
    163D  GLY*     3.0    37.6    +      -       -      +
    165D  ALA*     4.8     1.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 185 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136C  LEU*     5.2     1.1    -      -       +      -
    147C  ARG*     3.8    18.5    +      -       -      -
    181C  LEU*     2.8    33.0    +      -       +      +
    182C  ALA*     3.8     7.3    -      -       -      +
    184C  GLU*     1.3    90.6    -      -       +      +
    186C  PRO*     1.3    61.3    -      -       -      +
    187C  ASN*     3.1     5.7    +      -       -      +
    188C  VAL*     2.9    41.9    +      -       +      +
    108D  PHE*     5.8     0.9    -      -       +      -
    109D  VAL*     3.9    25.2    -      -       +      +
----------------------------------------------------------
 Back to top of page


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