Contacts of the helix formed by residues 28 - 49 (chain G) in PDB entry 2VT5


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 GLY 28 (chain G).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18E  MET*     3.5    21.8    -      -       -      +
     22E  ARG*     4.0     4.9    -      -       -      -
     27G  THR*     1.3    77.3    -      -       -      +
     29G  GLU*     1.3    55.7    +      -       -      +
     31G  THR      3.4     0.7    +      -       -      -
     32G  GLN*     3.0    33.3    +      -       -      +
   1337G  ROK      3.1    35.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 29 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22E  ARG*     3.7    22.2    +      -       -      +
     27G  THR*     3.4    17.7    +      -       -      +
     28G  GLY*     1.3    75.5    -      -       -      +
     30G  LEU*     1.3    65.8    +      -       -      +
     32G  GLN*     3.5     1.7    +      -       -      +
     33G  LEU      3.1    17.2    +      -       -      -
     88G  SER      5.8     0.2    -      -       -      +
     89G  PHE      4.2     7.0    -      -       -      +
     90G  ALA*     3.2    31.5    -      -       +      +
    111G  GLY*     3.2     8.9    -      -       -      -
    112G  LYS*     2.7    51.1    +      -       -      +
    113G  TYR*     4.1     8.7    -      -       +      +
   1337G  ROK      3.3     1.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 30 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29G  GLU*     1.3    77.9    -      -       -      +
     31G  THR*     1.3    56.7    +      -       -      +
     33G  LEU*     3.2    10.2    +      -       +      +
     34G  LEU*     2.9    54.2    +      -       +      +
    113G  TYR*     3.6    29.0    -      -       +      +
    138G  ILE*     4.0    30.7    -      -       +      -
    160G  VAL*     3.8    24.9    -      -       +      +
    161G  ALA*     4.8     5.6    -      -       +      -
    177G  MET*     5.1     2.5    -      -       -      -
   1337G  ROK      3.1    42.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 31 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18E  MET*     3.7    26.0    -      -       +      -
     14G  THR      5.3     0.9    -      -       -      +
     17G  VAL*     3.4    26.3    +      -       +      +
     18G  MET*     4.0    16.8    -      -       +      +
     28G  GLY      3.6     5.4    -      -       -      -
     30G  LEU*     1.3    75.2    -      -       -      +
     32G  GLN*     1.3    57.1    +      -       -      +
     34G  LEU*     3.4     1.2    +      -       -      +
     35G  ASN*     2.9    43.5    +      -       -      +
   1337G  ROK      2.7    38.7    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 32 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14E  THR      4.4     0.9    -      -       -      +
     15E  ARG*     3.5    47.4    +      -       -      +
     18E  MET*     3.7    22.1    -      -       -      +
     19E  GLU*     3.8    22.0    +      -       -      +
     22E  ARG*     3.3    25.5    -      -       -      +
     28G  GLY      3.0    15.3    +      -       -      +
     29G  GLU*     3.8     5.2    -      -       -      +
     30G  LEU      3.3     0.2    -      -       -      -
     31G  THR*     1.3    71.3    -      -       -      +
     33G  LEU*     1.3    66.4    -      -       -      +
     35G  ASN*     3.3    10.1    +      -       -      +
     36G  SER*     2.9    28.6    +      -       -      +
     88G  SER*     4.0    21.0    +      -       -      +
     90G  ALA*     5.0     0.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 33 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29G  GLU      3.1    12.6    +      -       -      +
     30G  LEU*     3.2    11.4    +      -       +      +
     32G  GLN*     1.3    77.6    -      -       -      +
     34G  LEU*     1.3    59.6    +      -       +      +
     36G  SER*     3.3     2.8    +      -       -      -
     37G  LEU*     2.9    35.0    +      -       +      +
     85G  LEU*     3.7    18.4    -      -       +      +
     88G  SER*     4.2    10.8    -      -       -      -
     90G  ALA*     3.8     4.1    -      -       +      +
     91G  THR*     3.7    22.9    -      -       +      -
    113G  TYR*     3.5    40.6    -      -       +      -
    115G  VAL*     4.0    10.5    -      -       +      -
    138G  ILE*     3.9    30.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 34 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13G  LEU*     4.9     5.1    -      -       +      +
     17G  VAL*     3.7    36.3    -      -       +      -
     30G  LEU*     2.9    40.4    +      -       +      +
     31G  THR      3.8     4.3    -      -       -      +
     33G  LEU*     1.3    72.6    -      -       +      +
     35G  ASN*     1.3    59.9    +      -       -      +
     37G  LEU*     3.7    10.0    -      -       +      +
     38G  CYS*     3.0    28.1    +      -       -      +
    136G  PHE*     4.3     7.2    -      -       +      -
    138G  ILE*     3.7    28.5    -      -       +      -
    161G  ALA*     5.0     2.0    -      -       +      -
    175G  LEU*     4.3    21.3    -      -       +      -
    177G  MET*     4.4    15.7    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 35 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14E  THR*     3.3    33.3    -      -       +      +
     15E  ARG*     6.1     1.8    -      -       +      +
     18E  MET*     5.2     2.6    -      -       -      -
     13G  LEU*     5.5     2.6    -      -       -      +
     14G  THR*     3.6    30.1    +      -       -      +
     17G  VAL*     4.9     5.2    -      -       -      +
     31G  THR*     2.9    32.8    +      -       -      +
     32G  GLN*     3.8    13.2    +      -       -      +
     34G  LEU*     1.3    78.2    -      -       -      +
     36G  SER*     1.3    62.5    +      -       -      +
     38G  CYS*     3.8     9.5    -      -       -      +
     39G  THR*     3.1    27.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 36 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15E  ARG*     2.6    30.1    +      -       -      -
     32G  GLN*     2.9    11.7    +      -       -      +
     33G  LEU      3.5     8.1    -      -       -      -
     35G  ASN*     1.3    72.6    -      -       -      +
     37G  LEU*     1.3    64.7    +      -       -      +
     39G  THR*     3.2     3.5    +      -       -      -
     40G  ALA      3.1    17.7    +      -       -      -
     84G  MET*     3.2    42.4    +      -       -      +
     85G  LEU*     4.5     2.0    -      -       -      -
     88G  SER*     3.2    14.7    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 37 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33G  LEU*     2.9    19.5    +      -       +      +
     34G  LEU*     3.7    15.5    -      -       +      +
     35G  ASN      3.3     0.2    -      -       -      -
     36G  SER*     1.3    78.4    -      -       -      +
     38G  CYS*     1.3    56.4    +      -       -      +
     40G  ALA*     3.4     5.8    +      -       +      +
     41G  VAL*     2.9    39.3    +      -       +      +
     81G  VAL*     3.9    32.5    -      -       +      -
     84G  MET*     5.3     0.4    -      -       -      -
     85G  LEU*     4.2    17.0    -      -       +      +
    115G  VAL*     5.3     2.2    -      -       +      -
    117G  PHE*     5.8     0.4    -      -       +      -
    134G  THR*     5.6     3.4    -      -       +      -
    136G  PHE*     3.5    57.4    -      -       +      -
    138G  ILE*     4.6     4.5    -      -       +      -
    173G  LEU*     5.7     2.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 38 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192E  GLU*     5.3     0.4    -      -       -      -
     13G  LEU*     3.7    23.6    -      -       +      -
     14G  THR*     5.1     9.6    -      -       -      -
     34G  LEU      3.0    18.9    +      -       -      +
     35G  ASN*     3.8    10.1    -      -       -      +
     36G  SER      3.2     0.2    -      -       -      -
     37G  LEU*     1.3    73.6    -      -       -      +
     39G  THR*     1.3    68.2    +      -       -      +
     41G  VAL*     3.3     8.4    +      -       -      +
     42G  LYS*     3.0    37.0    +      -       -      +
    173G  LEU*     4.7     4.9    -      -       +      +
    193G  PHE*     3.6    25.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 39 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12E  THR*     4.5     8.7    +      -       +      +
    190E  ILE*     4.5     0.9    -      -       +      +
    192E  GLU*     3.0    39.2    +      -       +      -
    194E  ILE*     5.7     0.9    -      -       +      -
     59F  ILE*     3.9    17.9    -      -       +      -
     35G  ASN      3.1    14.1    +      -       -      -
     36G  SER*     3.2     8.0    +      -       -      -
     38G  CYS*     1.3    75.0    -      -       -      +
     40G  ALA*     1.3    65.0    +      -       -      +
     42G  LYS*     3.2    12.8    +      -       -      +
     43G  ALA*     3.1    20.6    +      -       -      +
     84G  MET*     3.8    23.5    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 40 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59F  ILE*     5.3     0.2    -      -       -      -
     36G  SER      3.1     9.7    +      -       -      +
     37G  LEU*     3.5    12.6    -      -       -      +
     39G  THR*     1.3    79.1    -      -       -      +
     41G  VAL*     1.3    56.2    +      -       -      +
     43G  ALA*     3.2     7.4    +      -       -      +
     44G  ILE*     2.8    34.9    +      -       -      +
     80G  LEU*     3.8    16.5    -      -       -      +
     81G  VAL*     4.0    21.8    -      -       +      +
     84G  MET*     3.8    19.4    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 41 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37G  LEU*     2.9    28.9    +      -       +      +
     38G  CYS*     3.6     7.4    -      -       -      +
     39G  THR      3.2     0.4    -      -       -      -
     40G  ALA*     1.3    77.2    -      -       +      +
     42G  LYS*     1.3    55.2    +      -       -      +
     44G  ILE*     3.4     5.5    +      -       +      +
     45G  SER*     2.9    27.9    +      -       -      -
     81G  VAL*     5.8     0.4    -      -       +      -
    134G  THR*     4.6    14.8    -      -       +      +
    136G  PHE*     5.8     2.9    -      -       +      -
    165G  ALA*     3.6    28.9    -      -       +      -
    167G  TYR*     3.8    18.5    +      -       +      +
    171G  THR*     4.8     2.0    -      -       +      -
    173G  LEU*     4.4    10.1    -      -       +      -
    193G  PHE*     3.4    26.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 42 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42E  LYS*     4.4     2.0    -      -       -      +
    189E  ALA      4.7     0.2    -      -       -      +
    190E  ILE*     3.1    31.1    -      -       +      +
    191E  GLY      3.3     8.5    +      -       -      -
    192E  GLU*     2.6    33.4    +      -       -      -
     38G  CYS*     3.0    29.3    +      -       -      +
     39G  THR*     3.2     8.7    +      -       -      +
     41G  VAL*     1.3    75.6    -      -       -      +
     43G  ALA*     1.3    57.7    +      -       -      +
     45G  SER*     3.4     7.6    +      -       -      -
     46G  SER*     3.2    27.0    +      -       -      -
    186G  LEU*     4.1    16.5    -      -       +      +
    191G  GLY*     2.9    34.0    +      -       -      +
    192G  GLU*     5.1     1.0    +      -       -      +
    193G  PHE*     3.6    17.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 43 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190E  ILE*     3.5    17.7    -      -       +      +
     55F  HIS*     4.8     8.9    +      -       +      +
     59F  ILE*     3.9    14.1    -      -       +      -
     39G  THR      3.1    12.2    +      -       -      +
     40G  ALA      3.2     4.7    +      -       -      +
     42G  LYS*     1.3    73.2    -      -       -      +
     44G  ILE*     1.3    65.7    +      -       -      +
     46G  SER*     3.5     3.1    +      -       -      -
     47G  ALA*     3.3    21.3    +      -       -      +
     80G  LEU*     3.6    33.7    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 44 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40G  ALA      2.8    23.8    +      -       -      +
     41G  VAL*     3.4     2.2    +      -       +      +
     43G  ALA*     1.3    76.8    -      -       -      +
     45G  SER*     1.3    57.0    +      -       -      +
     47G  ALA*     3.2     5.0    +      -       -      +
     48G  VAL*     2.9    37.1    +      -       +      +
     77G  SER*     3.6    32.3    -      -       -      +
     80G  LEU*     3.7    18.6    -      -       +      -
     81G  VAL*     3.6    30.1    -      -       +      -
    119G  PRO      4.1     0.9    -      -       -      +
    120G  LEU*     4.0     4.9    -      -       +      -
    134G  THR*     3.9    14.6    -      -       +      +
    167G  TYR*     3.5    31.0    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 45 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41G  VAL      2.9    17.6    +      -       -      -
     42G  LYS      3.6     6.3    -      -       -      -
     43G  ALA      3.3     0.2    -      -       -      -
     44G  ILE*     1.3    76.0    -      -       -      +
     46G  SER*     1.3    58.1    +      -       -      +
     48G  VAL*     3.4     1.7    +      -       -      -
     49G  ARG*     3.0    43.1    +      -       -      +
    167G  TYR*     3.8    15.7    -      -       -      -
    171G  THR*     2.7    34.9    +      -       -      -
    186G  LEU*     4.1    11.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 46 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189E  ALA*     3.6    29.8    +      -       -      +
    190E  ILE*     4.1     6.5    -      -       -      -
     42G  LYS      3.2    16.0    +      -       -      -
     43G  ALA      3.7     5.6    -      -       -      -
     44G  ILE      3.2     0.2    -      -       -      -
     45G  SER*     1.3    76.8    -      -       -      +
     47G  ALA*     1.3    59.8    +      -       -      +
     49G  ARG*     3.8     5.3    +      -       -      +
     50G  LYS      3.5     2.8    +      -       -      -
     51G  ALA*     3.0    44.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 47 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55F  HIS*     6.2     0.7    -      -       -      +
     43G  ALA      3.3    13.7    +      -       -      +
     44G  ILE*     3.2     6.4    +      -       -      +
     46G  SER*     1.3    78.7    -      -       -      +
     48G  VAL*     1.3    63.7    +      -       -      +
     50G  LYS*     3.1    18.4    +      -       -      +
     51G  ALA      4.8     5.4    -      -       -      +
     73G  LEU*     3.8    31.0    -      -       +      +
     76G  LEU*     4.0    20.0    -      -       +      -
     77G  SER*     6.1     0.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 48 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44G  ILE*     2.9    26.7    +      -       +      +
     45G  SER*     3.8     6.1    -      -       -      +
     47G  ALA*     1.3    70.7    -      -       -      +
     49G  ARG*     1.3    57.1    +      -       -      +
     50G  LYS*     3.0    17.6    +      -       -      +
     73G  LEU*     4.0    13.3    -      -       +      +
    120G  LEU*     3.9    35.9    -      -       +      -
    126G  ILE*     4.6     3.3    -      -       +      +
    132G  VAL*     3.8    11.7    -      -       +      -
    167G  TYR*     4.0    13.2    -      -       +      -
    169H  SER*     3.3    39.9    +      -       -      +
    170H  ALA*     3.4    10.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 49 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45G  SER*     3.0    33.5    +      -       -      +
     46G  SER*     4.2     4.7    -      -       -      +
     47G  ALA      3.4     0.2    -      -       -      -
     48G  VAL*     1.3    76.1    -      -       -      +
     50G  LYS*     1.3    67.8    +      -       -      +
     51G  ALA      3.5     1.1    -      -       -      -
    167G  TYR*     3.8     8.2    -      -       -      +
    168G  GLY      2.7    31.1    +      -       -      +
    169G  SER      4.1     0.2    +      -       -      -
    170G  ALA*     3.0    24.4    +      -       -      +
    171G  THR*     2.9    28.6    +      -       -      +
     49H  ARG*     3.3    33.3    -      -       +      +
    168H  GLY      3.2     6.9    +      -       -      -
    169H  SER*     3.0    26.8    +      -       -      +
    170H  ALA*     4.0     7.5    -      -       -      +
    171H  THR      4.9     1.4    +      -       -      -
    186H  LEU      3.9     3.8    -      -       -      +
    188H  PRO*     3.4    24.3    -      -       +      +
----------------------------------------------------------
 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