Contacts of the helix formed by residues 133 - 159 (chain C) in PDB entry 3V5I


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 ALA 133 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131C  GLY      3.8     1.0    +      -       -      -
    132C  GLN*     1.3    71.4    -      -       -      +
    134C  THR*     1.3    58.7    +      -       -      +
    136C  ILE*     3.2    12.5    +      -       -      +
    137C  GLU*     2.9    29.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 134 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132C  GLN*     4.3     3.1    -      -       -      +
    133C  ALA*     1.3    76.7    -      -       -      +
    135C  GLU*     1.3    58.1    +      -       -      +
    137C  GLU*     3.3    15.7    +      -       -      +
    138C  ILE*     3.1    35.7    +      -       +      +
    171D  ARG*     3.6    43.0    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 135 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129C  ALA*     5.4     0.4    -      -       -      -
    130C  GLN      4.0    11.0    -      -       -      +
    131C  GLY*     3.5     9.0    -      -       -      -
    132C  GLN*     2.9    39.8    +      -       +      +
    134C  THR*     1.3    74.3    -      -       -      +
    136C  ILE*     1.3    65.4    +      -       -      +
    138C  ILE*     3.3    11.0    +      -       +      +
    139C  ALA*     3.1    22.0    +      -       -      +
    171D  ARG*     3.5    31.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 136 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129C  ALA*     4.0    29.8    -      -       +      +
    130C  GLN*     4.4     1.3    -      -       -      -
    131C  GLY      3.4    32.8    -      -       -      +
    132C  GLN      2.9    13.2    +      -       -      +
    133C  ALA*     3.6    10.3    -      -       -      +
    135C  GLU*     1.3    74.6    -      -       -      +
    137C  GLU*     1.3    53.2    +      -       -      +
    139C  ALA*     3.2     3.6    +      -       -      +
    140C  ALA*     2.8    37.7    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 137 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133C  ALA      2.9    12.5    +      -       -      +
    134C  THR*     3.4    19.9    +      -       -      +
    136C  ILE*     1.3    77.6    -      -       -      +
    138C  ILE*     1.3    66.3    +      -       +      +
    140C  ALA*     3.3     7.2    +      -       +      +
    141C  ASN*     2.9    44.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 138 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134C  THR*     3.1    27.9    +      -       +      +
    135C  GLU*     3.7    10.1    -      -       +      +
    136C  ILE      3.3     0.4    -      -       -      -
    137C  GLU*     1.3    78.9    -      -       +      +
    139C  ALA*     1.3    58.9    +      -       -      +
    141C  ASN*     3.4     8.4    +      -       -      +
    142C  HIS*     3.0    27.2    +      -       -      +
    171D  ARG*     3.6    32.8    -      -       +      -
    172D  ASP*     3.5    35.0    -      -       +      +
    174D  PHE*     4.3    12.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 139 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128C  GLY      4.3     8.3    -      -       -      +
    129C  ALA*     3.6    26.0    -      -       +      -
    135C  GLU      3.1    10.5    +      -       -      +
    136C  ILE      3.5     6.7    -      -       -      +
    138C  ILE*     1.3    75.3    -      -       -      +
    140C  ALA*     1.3    65.9    +      -       -      +
    142C  HIS*     3.2     8.0    +      -       -      +
    143C  ILE*     3.0    26.7    +      -       -      +
    174D  PHE*     5.5     2.5    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 140 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136C  ILE*     2.8    25.3    +      -       +      +
    137C  GLU*     3.6     7.6    -      -       -      +
    139C  ALA*     1.3    73.4    -      -       -      +
    141C  ASN*     1.3    63.6    +      -       -      +
    143C  ILE*     3.3    10.5    +      -       -      +
    144C  LEU*     3.0    37.7    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 141 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    137C  GLU*     2.9    40.1    +      -       -      +
    138C  ILE*     3.7     7.4    -      -       -      +
    140C  ALA*     1.3    75.4    -      -       -      +
    142C  HIS*     1.3    58.1    +      -       -      +
    144C  LEU*     3.8    10.7    -      -       -      +
    145C  LYS*     2.9    31.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 142 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138C  ILE      3.0    17.3    +      -       -      +
    139C  ALA*     3.2     7.9    +      -       -      +
    141C  ASN*     1.3    76.4    -      -       -      +
    143C  ILE*     1.3    62.3    +      -       -      +
    145C  LYS*     3.4     8.6    +      -       +      +
    146C  THR*     3.0    41.2    +      -       -      -
     95D  MET*     4.7     3.4    -      -       +      -
    119D  GLU*     3.0    33.7    +      -       -      -
    174D  PHE*     3.4    59.5    -      +       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 143 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125C  PRO*     3.9    25.1    -      -       +      +
    126C  LEU      3.7     9.9    -      -       -      +
    127C  GLY*     3.6    34.1    -      -       -      +
    128C  GLY      5.3     0.2    -      -       -      +
    139C  ALA      3.0    16.0    +      -       -      +
    140C  ALA*     3.3    15.3    -      -       -      +
    142C  HIS*     1.3    76.6    -      -       -      +
    144C  LEU*     1.3    74.0    +      -       +      +
    146C  THR*     3.3     7.9    +      -       +      -
    147C  ARG*     3.0    22.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 144 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124C  GLN*     6.3     0.9    -      -       -      +
    140C  ALA*     3.0    30.0    +      -       +      +
    141C  ASN*     3.8    10.8    -      -       -      +
    143C  ILE*     1.3    83.2    -      -       +      +
    145C  LYS*     1.3    61.7    +      -       -      +
    147C  ARG*     3.1    17.3    +      -       +      +
    148C  GLU*     3.1    28.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 145 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141C  ASN      2.9    18.1    +      -       -      +
    142C  HIS*     3.7     9.6    -      -       +      +
    143C  ILE      3.2     0.2    -      -       -      -
    144C  LEU*     1.3    75.6    -      -       -      +
    146C  THR*     1.3    64.1    +      -       -      +
    148C  GLU*     3.3    18.4    +      -       +      +
    149C  LYS*     3.0    21.9    +      -       -      +
    174D  PHE      5.8     0.8    +      -       -      -
    176D  THR*     3.8    22.6    -      -       +      +
    179D  GLU*     3.7    23.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 146 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71C  VAL*     3.8    33.2    -      -       +      -
     75C  PHE*     5.2     3.1    -      -       +      -
    125C  PRO*     5.0     5.4    -      -       +      -
    142C  HIS*     3.0    30.5    +      -       -      -
    143C  ILE*     3.6    11.2    -      -       +      -
    144C  LEU      3.2     0.2    -      -       -      -
    145C  LYS*     1.3    76.8    -      -       -      +
    147C  ARG*     1.3    58.2    +      -       -      +
    149C  LYS*     3.2     9.2    +      -       +      +
    150C  LEU*     2.9    36.4    +      -       +      +
    119D  GLU*     3.8    19.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 147 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124C  GLN*     3.4    37.6    +      -       -      +
    125C  PRO*     3.7    23.1    -      -       +      +
    143C  ILE      3.0    13.9    +      -       -      +
    144C  LEU*     3.1    19.2    +      -       +      +
    146C  THR*     1.3    77.4    -      -       -      +
    148C  GLU*     1.3    56.8    +      -       +      +
    150C  LEU*     3.2     3.9    +      -       +      +
    151C  ASN*     2.8    47.4    +      -       -      +
    166C  GLN*     3.0    61.3    +      -       -      +
    169C  THR*     3.1    29.3    +      -       -      -
    170C  ASP*     3.6    10.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 148 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144C  LEU*     3.1    17.0    +      -       -      +
    145C  LYS*     3.3    20.7    +      -       +      +
    147C  ARG*     1.3    74.7    -      -       -      +
    149C  LYS*     1.3    58.1    +      -       -      +
    151C  ASN*     3.9     5.6    -      -       -      +
    152C  ARG*     2.9    37.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 149 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75C  PHE*     3.5    36.0    -      -       +      -
    145C  LYS*     3.0    13.6    +      -       +      +
    146C  THR*     3.5    12.3    -      -       -      +
    148C  GLU*     1.3    76.0    -      -       -      +
    150C  LEU*     1.3    62.0    +      -       -      +
    152C  ARG*     3.7    27.7    -      -       -      +
    153C  ILE*     3.2    28.5    +      -       +      +
    117D  ASN*     2.9    41.7    +      -       -      +
    118D  ALA      4.7     0.8    +      -       -      -
    119D  GLU*     3.4    29.6    +      -       -      +
    176D  THR*     6.0     6.4    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 150 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71C  VAL*     4.3     5.6    -      -       +      -
     75C  PHE*     3.6    30.5    -      -       +      -
     99C  MET*     3.7    33.0    -      -       +      -
    102C  PHE*     3.7    25.6    -      -       +      -
    125C  PRO*     4.1    28.0    -      -       +      -
    146C  THR*     2.9    28.6    +      -       +      +
    147C  ARG*     3.7     3.8    -      -       +      +
    149C  LYS*     1.3    77.3    -      -       -      +
    151C  ASN*     1.3    61.4    +      -       -      +
    153C  ILE      3.4     0.5    +      -       -      -
    154C  LEU*     2.9    32.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 151 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147C  ARG*     2.8    36.7    +      -       -      +
    148C  GLU*     3.9     5.3    -      -       -      +
    150C  LEU*     1.3    72.6    -      -       -      +
    152C  ARG*     1.3    54.6    +      -       -      +
    154C  LEU*     3.2     3.5    +      -       -      +
    155C  SER*     2.7    37.6    +      -       -      -
    162C  ILE*     4.4    15.4    +      -       +      +
    165C  ILE*     3.5    30.0    -      -       +      +
    166C  GLN*     2.8    44.3    +      -       -      +
    169C  THR*     4.3     5.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 152 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148C  GLU*     2.9    24.9    +      -       -      +
    149C  LYS*     3.7    43.7    -      -       -      +
    151C  ASN*     1.3    71.9    -      -       -      +
    153C  ILE*     1.3    72.9    +      -       -      +
    155C  SER*     3.3     3.3    +      -       -      -
    156C  GLU*     3.2    39.1    +      -       +      +
    162C  ILE*     4.2    24.1    -      -       +      +
    117D  ASN*     4.1    14.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 153 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75C  PHE*     3.8    19.1    -      -       +      -
     78C  TYR*     3.3    33.9    -      -       +      +
    102C  PHE*     3.7    16.8    -      -       +      -
    149C  LYS*     3.2    19.4    +      -       +      +
    150C  LEU      4.0     0.2    -      -       -      +
    152C  ARG*     1.3    85.0    -      -       -      +
    154C  LEU*     1.3    65.5    +      -       -      +
    156C  GLU*     3.3    18.9    +      -       -      +
    157C  ARG*     3.2    26.5    +      -       +      +
    117D  ASN*     3.5    36.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 154 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101C  SER      5.8     0.2    -      -       -      -
    102C  PHE*     4.0    26.6    -      -       +      -
    105C  ALA*     4.3    15.3    -      -       +      -
    122C  ILE*     5.1    15.3    -      -       +      -
    150C  LEU*     2.9    19.1    +      -       +      +
    151C  ASN*     3.5     6.7    -      -       -      +
    153C  ILE*     1.3    78.8    -      -       -      +
    155C  SER*     1.3    55.6    +      -       -      +
    157C  ARG*     3.1     4.5    +      -       +      +
    158C  THR*     2.8    44.8    +      -       +      +
    165C  ILE*     4.0    27.8    -      -       +      -
    169C  THR*     5.2     5.8    -      -       +      -
    183C  TYR*     5.7     0.7    -      -       +      -
    185C  LEU*     4.2    23.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 155 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151C  ASN      2.7    20.5    +      -       -      -
    152C  ARG      3.3     7.2    -      -       -      -
    154C  LEU*     1.3    74.2    -      -       -      +
    156C  GLU*     1.3    56.7    +      -       -      +
    158C  THR*     3.9     2.2    -      -       -      -
    159C  GLY*     2.9    32.2    +      -       -      -
    160C  GLN      2.6    24.7    +      -       -      +
    161C  SER*     3.8     2.1    -      -       -      -
    162C  ILE*     3.5    29.0    +      -       -      +
    165C  ILE*     4.5     3.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 156 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78C  TYR*     5.3     2.1    +      -       -      -
    109C  LYS*     3.7    11.4    +      -       -      -
    152C  ARG*     3.2    33.6    +      -       +      +
    153C  ILE*     3.5    23.5    -      -       -      +
    154C  LEU      3.3     0.2    -      -       -      -
    155C  SER*     1.3    76.6    -      -       -      +
    157C  ARG*     1.3    64.0    +      -       +      +
    159C  GLY*     4.3     3.8    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 157 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78C  TYR*     3.3    29.0    +      -       -      -
     82C  GLN*     3.6    32.9    -      -       -      +
    102C  PHE*     5.8     0.7    -      -       -      -
    105C  ALA*     3.5    36.3    +      -       +      +
    106C  ALA*     4.1     8.6    +      -       -      +
    107C  GLY      3.7    15.4    +      -       -      -
    108C  ALA*     5.7     0.2    -      -       -      +
    109C  LYS*     3.8    34.0    +      -       -      +
    112C  ARG*     3.1    24.9    +      -       -      +
    153C  ILE*     3.2    18.4    -      -       +      +
    154C  LEU*     3.1     6.9    +      -       +      +
    156C  GLU*     1.3    82.1    -      -       +      +
    158C  THR*     1.3    62.8    +      -       +      +
    184C  GLY      3.4     2.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 158 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105C  ALA*     5.0     1.6    -      -       +      -
    154C  LEU*     2.8    32.6    +      -       +      +
    155C  SER*     3.6     0.9    +      -       -      -
    157C  ARG*     1.3    79.5    -      -       -      +
    159C  GLY*     1.3    62.4    +      -       -      +
    160C  GLN*     3.2    22.7    +      -       -      +
    165C  ILE*     4.0     2.6    -      -       -      +
    183C  TYR*     3.5    28.3    -      -       +      +
    184C  GLY*     3.4    28.2    -      -       -      +
    185C  LEU*     3.8    25.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 159 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    155C  SER      2.9    12.4    +      -       -      -
    156C  GLU      4.3     4.1    +      -       -      -
    157C  ARG      3.6     1.2    -      -       -      -
    158C  THR*     1.3    77.6    -      -       -      +
    160C  GLN*     1.3    63.6    +      -       -      +
    161C  SER      4.0     0.2    +      -       -      -
----------------------------------------------------------
 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