Contacts of the helix formed by residues 94 - 115 (chain C) in PDB entry 1RX0


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 CYS 94 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38C  MET*     4.0    12.2    -      -       +      +
     42C  MET*     4.0    25.1    -      -       +      -
     45C  TRP*     4.2    17.0    -      -       +      -
     90C  LEU      3.4     3.6    +      -       -      -
     91C  ALA      3.6     2.2    -      -       -      -
     93C  GLY*     1.3    79.1    -      -       -      +
     95C  THR*     1.3    65.6    +      -       -      +
     96C  SER*     3.8    11.0    -      -       -      -
     97C  THR*     3.1    36.3    -      -       -      +
     98C  THR*     2.8    28.6    +      -       -      -
    218C  SER*     4.4     2.9    -      -       -      -
    364C  GLN*     4.2     4.3    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 95 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42C  MET*     5.0     3.0    -      -       -      -
     91C  ALA*     3.0    22.4    +      -       -      +
     94C  CYS*     1.3    70.0    -      -       -      +
     96C  SER*     1.3    60.3    +      -       -      +
     98C  THR*     3.4     1.4    +      -       -      -
     99C  ALA*     2.9    29.3    +      -       -      +
    261C  CYS*     3.8    16.5    -      -       +      +
    265C  ALA*     3.4    23.4    -      -       +      +
    365C  TYR*     3.7     8.7    -      -       -      -
    368C  ASP*     4.0    22.4    +      -       +      -
    369C  SER      4.8     1.1    -      -       -      +
    372C  HIS*     3.5    32.8    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 96 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94C  CYS*     3.4     6.9    -      -       -      -
     95C  THR*     1.3    80.1    -      -       -      +
     97C  THR*     1.3    62.1    +      -       -      +
     99C  ALA*     3.3     1.2    +      -       -      +
    100C  TYR      3.2     7.3    +      -       -      -
    216C  TRP*     3.1    44.7    -      -       -      +
    217C  ASN      4.5     1.3    -      -       -      -
    218C  SER*     2.7    24.1    +      -       -      -
    219C  GLN*     2.7    26.3    -      -       -      +
    364C  GLN*     4.5     2.9    -      -       -      -
    368C  ASP*     3.3    19.3    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 97 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38C  MET*     4.2    12.1    -      -       +      -
     45C  TRP*     3.5    11.7    -      -       +      -
     52C  PRO*     3.7    22.1    -      -       +      +
     55C  VAL*     6.1     0.9    -      -       +      -
     56C  MET*     4.1    20.2    -      -       +      -
     94C  CYS*     3.1    25.7    -      -       -      -
     96C  SER*     1.3    74.8    -      -       -      +
     98C  THR*     1.3    66.4    +      -       -      +
    100C  TYR*     3.2     7.1    +      -       -      +
    101C  ILE*     3.0    25.0    +      -       +      +
    218C  SER*     2.9    23.4    +      -       -      +
    219C  GLN*     5.2     0.2    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 98 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38C  MET*     3.4     4.9    -      -       -      +
     87C  PHE*     3.4    38.5    -      -       +      +
     90C  LEU*     3.1    34.7    +      -       +      +
     91C  ALA*     3.9     4.9    -      -       -      -
     94C  CYS      2.8    22.9    +      -       -      -
     95C  THR      3.8     3.1    -      -       -      -
     97C  THR*     1.3    74.4    -      -       -      +
     99C  ALA*     1.3    66.4    +      -       -      +
    101C  ILE*     3.1    11.5    +      -       -      +
    102C  SER*     3.0    20.6    +      -       -      -
    261C  CYS*     3.8    12.6    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 99 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95C  THR      2.9    18.5    +      -       -      +
     96C  SER      3.5     4.9    -      -       -      +
     97C  THR      3.2     0.2    -      -       -      -
     98C  THR*     1.3    76.0    -      -       -      +
    100C  TYR*     1.3    63.7    +      -       -      +
    102C  SER*     3.1     6.4    +      -       -      -
    103C  ILE*     3.1    26.4    +      -       -      +
    216C  TRP*     3.3    37.2    -      -       +      +
    219C  GLN*     4.2     0.2    -      -       -      -
    258C  ILE*     4.4     6.0    -      -       +      +
    261C  CYS*     3.8    17.4    -      -       -      -
    372C  HIS*     4.5     3.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 100 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51C  PHE*     3.5    28.7    -      +       +      -
     56C  MET*     3.7    20.0    -      -       -      -
     96C  SER      3.2     6.4    +      -       -      +
     97C  THR*     3.5     8.5    -      -       -      +
     98C  THR      3.2     0.4    -      -       -      -
     99C  ALA*     1.3    75.1    -      -       -      +
    101C  ILE*     1.3    69.5    +      -       -      +
    103C  ILE*     2.9    10.4    +      -       +      +
    104C  HIS*     2.9    32.3    +      -       +      +
    130C  MET*     4.4     1.6    -      -       +      -
    133C  PHE*     3.3    35.4    -      +       -      +
    134C  ALA      2.8    30.8    +      -       -      -
    171C  SER*     4.0    22.9    -      -       -      -
    172C  GLY*     4.2     6.7    -      -       -      -
    176C  SER*     3.5     2.3    +      -       -      -
    219C  GLN*     3.5    34.7    +      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 101 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38C  MET*     5.0     7.6    -      -       +      -
     56C  MET*     4.3    23.6    -      -       +      -
     59C  ALA*     4.7    15.7    -      -       +      -
     64C  PHE*     3.5    16.6    -      -       +      +
     87C  PHE*     3.9    13.0    -      -       +      -
     90C  LEU*     4.6    14.6    -      -       +      -
     97C  THR*     3.0    28.6    +      -       +      +
     98C  THR*     3.1    15.4    +      -       -      +
    100C  TYR*     1.3    79.1    -      -       -      +
    102C  SER*     1.3    54.9    +      -       -      +
    104C  HIS*     3.4     5.3    +      -       -      +
    105C  ASN*     2.7    52.3    +      -       -      +
    130C  MET*     4.5    11.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 102 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68C  TYR*     4.5     1.7    +      -       -      -
     87C  PHE*     3.7    26.7    -      -       -      -
     98C  THR      3.0    11.7    +      -       -      -
     99C  ALA*     3.3    13.2    -      -       -      -
    100C  TYR      3.0     0.2    -      -       -      -
    101C  ILE*     1.3    74.7    -      -       -      +
    103C  ILE*     1.3    60.5    -      -       -      +
    105C  ASN*     3.3     3.5    +      -       -      +
    106C  MET*     2.9    27.9    +      -       -      +
    254C  GLY*     4.5     7.0    +      -       -      -
    257C  ASN*     3.0    29.8    +      -       -      +
    258C  ILE*     4.6     6.3    +      -       -      +
    261C  CYS*     4.9     3.8    -      -       -      -
    376C  GLU*     5.3     0.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 103 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99C  ALA      3.1    14.3    +      -       -      +
    100C  TYR*     2.9    17.6    +      -       +      +
    102C  SER*     1.3    75.9    -      -       -      +
    104C  HIS*     1.3    65.3    +      -       -      +
    106C  MET*     3.1    10.4    +      -       +      +
    107C  CYS*     3.1    22.5    +      -       -      -
    134C  ALA      4.9     4.9    -      -       -      +
    135C  SER*     5.0     0.7    -      -       -      -
    136C  TYR*     4.0    24.0    -      -       +      +
    171C  SER*     3.9    25.8    -      -       -      +
    216C  TRP*     3.9    11.2    -      -       +      -
    258C  ILE*     5.0     1.3    -      -       +      -
    376C  GLU*     3.9    10.1    -      -       -      +
    399C  FAD      4.8     2.5    -      -       -      +
    400C  2MC      3.6    45.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 104 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65C  GLY      3.3    18.5    +      -       -      -
    100C  TYR*     2.9    27.3    +      -       +      +
    101C  ILE      3.5     7.6    -      -       -      +
    103C  ILE*     1.3    78.8    -      -       -      +
    105C  ASN*     1.3    63.5    +      -       -      +
    107C  CYS*     3.3     7.0    +      -       -      +
    108C  ALA*     3.1    19.2    +      -       +      +
    127C  LEU*     2.7    43.6    +      -       +      +
    130C  MET*     3.6    25.5    -      -       +      +
    132C  LYS      3.4    25.4    -      -       -      -
    133C  PHE*     3.7     3.7    -      -       -      -
    134C  ALA*     3.1    30.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 105 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64C  PHE      3.1    22.4    +      -       -      -
     65C  GLY*     3.5    10.1    +      -       -      -
     66C  GLY*     3.2     7.3    -      -       -      -
     67C  VAL*     2.8    33.4    +      -       -      +
     68C  TYR*     3.9    18.2    +      -       +      -
     69C  ILE*     4.0     3.6    -      -       -      +
     87C  PHE*     3.9     9.8    -      -       +      -
    101C  ILE*     2.7    32.1    +      -       -      +
    102C  SER*     3.4    11.2    -      -       -      +
    103C  ILE      3.2     0.2    -      -       -      -
    104C  HIS*     1.3    78.3    -      -       -      +
    106C  MET*     1.3    59.4    +      -       -      +
    108C  ALA*     3.2     5.7    +      -       -      +
    109C  TRP*     2.9    28.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 106 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68C  TYR*     3.4    14.8    +      -       -      +
    102C  SER      2.9    13.1    +      -       -      +
    103C  ILE*     3.1     9.6    +      -       +      +
    105C  ASN*     1.3    76.2    -      -       -      +
    107C  CYS*     1.3    64.1    +      -       -      +
    109C  TRP*     3.2     5.6    +      -       +      +
    110C  MET*     3.0    29.2    +      -       -      +
    136C  TYR*     3.4    39.9    -      -       +      -
    250C  GLY*     3.2    41.5    -      -       -      +
    251C  LEU*     4.0    14.8    -      -       +      -
    254C  GLY*     4.1    14.1    -      -       -      -
    376C  GLU*     4.4     4.5    -      -       -      +
    400C  2MC      4.0    19.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 107 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103C  ILE      3.1    18.5    +      -       -      -
    104C  HIS      3.5     7.9    -      -       -      +
    106C  MET*     1.3    76.1    -      -       -      +
    108C  ALA*     1.3    62.5    +      -       -      +
    110C  MET*     3.3    16.8    +      -       -      +
    111C  ILE*     3.3    20.2    +      -       -      +
    127C  LEU*     4.9     0.2    -      -       -      -
    134C  ALA*     3.6    16.6    -      -       +      -
    135C  SER*     3.4    40.4    -      -       -      -
    136C  TYR*     3.5    17.0    -      -       -      -
    180C  VAL*     3.7    18.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 108 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65C  GLY      5.0     5.4    -      -       -      +
     69C  ILE*     3.5    19.3    -      -       +      -
    104C  HIS      3.1     9.8    +      -       -      +
    105C  ASN*     3.5     9.6    -      -       -      +
    107C  CYS*     1.3    79.6    -      -       -      +
    109C  TRP*     1.3    58.3    +      -       -      +
    111C  ILE*     3.4     2.5    +      -       -      +
    112C  ASP*     2.9    28.9    +      -       -      +
    124C  CYS*     3.7     9.3    -      -       -      -
    127C  LEU*     4.0    33.3    -      -       +      +
    128C  CYS*     5.4     2.7    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 109 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68C  TYR*     3.4    49.9    +      +       +      +
     69C  ILE*     3.2    11.8    -      -       +      +
     80C  ARG*     3.4    27.6    -      -       -      +
    105C  ASN      2.9    12.3    +      -       -      +
    106C  MET*     3.2     6.7    +      -       +      +
    108C  ALA*     1.3    75.5    -      -       -      +
    110C  MET*     1.3    72.8    +      -       +      +
    112C  ASP*     4.2     4.0    -      -       -      -
    113C  SER*     2.8    58.6    +      -       -      -
    114C  PHE*     3.9    17.3    -      +       -      -
    249C  ARG*     3.3    47.3    -      -       -      -
    250C  GLY*     3.7    30.1    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 110 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106C  MET*     3.0    23.0    +      -       -      +
    107C  CYS*     3.3     8.0    +      -       -      +
    109C  TRP*     1.3    91.3    -      -       +      +
    111C  ILE*     1.3    59.3    +      -       +      +
    114C  PHE*     3.0    38.2    +      -       -      +
    136C  TYR*     3.5    40.2    -      -       +      -
    180C  VAL*     3.9    24.9    -      -       +      -
    182C  MET*     4.2     6.3    -      -       +      -
    195C  CYS*     4.3     4.7    -      -       -      -
    237C  ILE*     3.8     3.4    -      -       -      +
    246C  ILE*     3.4    45.3    -      -       +      +
    247C  ALA*     4.0     7.0    -      -       -      +
    250C  GLY*     4.5     3.6    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 111 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107C  CYS      3.3    13.8    +      -       -      +
    108C  ALA      3.7     5.8    -      -       -      +
    109C  TRP      3.2     0.6    -      -       -      -
    110C  MET*     1.3    77.8    -      -       +      +
    112C  ASP*     1.3    57.6    +      -       -      +
    115C  GLY*     2.8    27.2    +      -       -      -
    119C  GLN*     3.9    22.4    -      -       +      +
    120C  ARG*     3.7     2.9    -      -       -      +
    123C  PHE*     3.8    24.2    -      -       +      -
    124C  CYS*     3.9    14.4    -      -       -      -
    127C  LEU*     4.3    14.1    -      -       +      -
    178C  ILE*     4.4     9.2    -      -       +      -
    180C  VAL*     4.5     8.3    -      -       +      -
    197C  VAL*     3.9    26.2    -      -       +      -
    237C  ILE*     4.2    22.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 112 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68C  TYR      4.6     1.7    -      -       -      +
     69C  ILE*     3.4    21.1    -      -       +      +
     70C  GLN*     3.0    32.5    +      -       -      +
     73C  VAL*     4.4     0.9    -      -       -      -
    108C  ALA      2.9    18.1    +      -       -      +
    109C  TRP*     3.7     5.9    -      -       -      +
    111C  ILE*     1.3    77.6    -      -       -      +
    113C  SER*     1.3    64.4    +      -       -      +
    115C  GLY      4.6     0.7    +      -       -      +
    120C  ARG*     2.6    54.8    +      -       -      +
    124C  CYS*     3.7    15.7    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 113 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109C  TRP*     2.8    62.1    +      -       -      -
    112C  ASP*     1.3    78.1    +      -       -      +
    114C  PHE*     1.3    74.4    +      -       -      +
    115C  GLY      5.0     1.0    -      -       -      +
    249C  ARG*     5.0     2.7    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 114 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109C  TRP*     3.9    24.5    -      +       -      -
    110C  MET*     3.0    21.0    +      -       -      +
    113C  SER*     1.3    84.1    -      -       -      +
    115C  GLY*     1.3    65.7    +      -       -      +
    237C  ILE*     3.6    13.5    -      -       +      -
    238C  GLY*     3.8    16.8    +      -       -      +
    242C  GLN*     4.4    15.9    -      -       -      -
    245C  LEU      5.6     0.4    -      -       -      -
    246C  ILE*     3.7    47.1    -      -       +      -
    249C  ARG*     3.7    37.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 115 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111C  ILE      2.8    23.3    +      -       -      -
    112C  ASP      4.7     0.5    -      -       -      +
    113C  SER      3.8     1.4    -      -       -      +
    114C  PHE*     1.3    77.2    -      -       -      +
    116C  ASN*     1.3    66.3    +      -       -      -
    117C  GLU*     5.2     0.9    -      -       -      +
    119C  GLN*     3.2    15.9    -      -       -      -
    120C  ARG*     3.8    14.4    -      -       -      -
    237C  ILE*     3.8    11.0    -      -       -      +
----------------------------------------------------------
 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