Contacts of the helix formed by residues 145 - 170 (chain A) in PDB entry 5DSG


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 THR 145 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66A  VAL*     4.0     4.7    -      -       -      +
    142A  ALA      4.5    13.0    -      -       -      +
    143A  ARG*     3.3     7.0    +      -       -      -
    144A  ARG*     1.3    77.8    -      -       -      +
    146A  THR*     1.3    63.4    +      -       -      +
    147A  LYS*     3.6    11.4    +      -       -      +
    148A  MET*     3.3    28.7    +      -       -      +
    149A  ALA*     3.2    19.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 146 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66A  VAL*     4.4    10.3    -      -       +      +
     69A  TYR*     4.0    32.8    -      -       +      +
    145A  THR*     1.3    72.5    -      -       -      +
    147A  LYS*     1.3    63.1    +      -       -      +
    149A  ALA*     3.3     9.4    +      -       -      +
    150A  GLY*     2.9    24.6    +      -       -      -
   1202B  OLC      3.8    21.7    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 147 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145A  THR*     3.8    11.1    -      -       -      +
    146A  THR*     1.3    83.5    +      -       -      +
    148A  MET*     1.3    62.2    +      -       +      +
    150A  GLY*     3.4     1.4    +      -       -      -
    151A  LEU*     2.9    31.4    +      -       +      +
    425B  PHE*     3.5    30.8    -      -       +      +
    426B  CYS*     3.6    32.9    -      -       +      -
    428B  SER*     4.5     7.2    +      -       -      +
    429B  CYS*     3.9     8.8    -      -       -      -
   1202B  OLC      5.2     0.2    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 148 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143A  ARG      4.0    15.5    -      -       -      +
    144A  ARG*     5.3     1.1    -      -       -      -
    145A  THR*     3.3    24.9    +      -       +      +
    146A  THR      3.3     0.2    -      -       -      -
    147A  LYS*     1.3    82.9    -      -       +      +
    149A  ALA*     1.3    60.2    +      -       -      +
    151A  LEU*     3.3    27.0    +      -       +      +
    152A  MET*     2.9    49.0    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 149 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66A  VAL*     3.6    31.6    -      -       +      -
     69A  TYR*     4.6    12.8    -      -       +      -
     70A  PHE*     3.6    18.1    -      -       +      -
    145A  THR      3.2     7.0    +      -       -      +
    146A  THR*     3.4    12.1    -      -       -      +
    147A  LYS      3.2     0.2    -      -       -      -
    148A  MET*     1.3    78.6    -      -       -      +
    150A  GLY*     1.3    56.4    +      -       -      +
    152A  MET*     3.1     4.8    +      -       -      +
    153A  ILE*     2.9    33.7    +      -       -      +
   1202B  OLC      4.8     0.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 150 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146A  THR      2.9    11.3    +      -       -      -
    149A  ALA*     1.3    75.8    -      -       -      +
    151A  LEU*     1.3    57.1    +      -       -      +
    153A  ILE*     3.8     4.3    -      -       -      +
    154A  ALA*     2.9    32.7    +      -       -      +
    425B  PHE*     3.6    13.7    -      -       -      -
   1202B  OLC      3.2    35.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 151 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147A  LYS*     2.9    21.7    +      -       +      +
    148A  MET*     3.4    33.2    -      -       +      +
    150A  GLY*     1.3    77.8    -      -       -      +
    152A  MET*     1.3    62.4    +      -       -      +
    154A  ALA*     3.9     1.0    -      -       +      +
    155A  ALA*     2.9    33.8    +      -       +      +
    425B  PHE*     3.7    32.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 152 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70A  PHE*     4.5     3.1    -      -       +      -
    125A  ILE*     3.2    53.1    -      -       +      +
    148A  MET*     2.9    34.7    +      -       +      +
    149A  ALA*     3.1     8.3    +      -       -      +
    151A  LEU*     1.3    79.6    -      -       -      +
    153A  ILE*     1.3    59.2    +      -       -      +
    155A  ALA*     3.3    11.5    +      -       +      +
    156A  ALA      2.9    23.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 153 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69A  TYR*     3.7    30.5    -      -       +      +
     70A  PHE*     3.7    22.9    -      -       +      -
     73A  SER*     3.3    29.8    -      -       -      +
    122A  ASN*     4.5     4.3    -      -       -      +
    125A  ILE*     4.5     2.7    -      -       +      -
    149A  ALA      2.9    24.1    +      -       -      +
    150A  GLY*     3.8     7.6    -      -       -      +
    152A  MET*     1.3    72.8    -      -       -      +
    154A  ALA*     1.3    66.2    +      -       -      +
    156A  ALA*     3.0     7.5    +      -       -      +
    157A  TRP*     3.0    38.4    +      -       +      +
   1206A  OLC      3.8    23.1    -      -       +      -
   1202B  OLC      4.2     8.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 154 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150A  GLY      2.9    19.1    +      -       -      +
    151A  LEU*     3.9     2.5    -      -       +      +
    153A  ILE*     1.3    76.3    -      -       -      +
    155A  ALA*     1.3    57.5    +      -       -      +
    157A  TRP*     3.5     0.7    +      -       -      +
    158A  VAL*     2.9    38.8    +      -       +      +
    421B  LEU*     4.6     7.6    -      -       +      -
    425B  PHE*     3.7    24.9    -      -       +      -
   1202B  OLC      3.7    26.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 155 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121A  MET*     4.9     0.4    -      -       +      -
    151A  LEU*     2.9    23.1    +      -       +      +
    152A  MET*     3.4    16.2    -      -       +      +
    154A  ALA*     1.3    77.2    -      -       -      +
    156A  ALA*     1.3    56.9    +      -       -      +
    158A  VAL*     4.7     3.4    -      -       -      -
    159A  LEU*     2.9    47.7    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 156 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118A  ALA*     4.5     9.2    -      -       -      +
    121A  MET*     3.8    32.2    -      -       +      +
    122A  ASN*     4.7     3.4    -      -       -      +
    125A  ILE*     3.9    16.8    -      -       +      -
    152A  MET      2.9    13.8    +      -       -      +
    153A  ILE*     3.0    10.5    +      -       -      +
    155A  ALA*     1.3    75.9    -      -       -      +
    157A  TRP*     1.3    57.6    +      -       +      +
    160A  SER*     2.7    38.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 157 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73A  SER*     2.9    30.6    +      -       -      -
     77A  ALA*     3.9    35.4    -      -       +      -
     80A  ILE*     4.3     6.7    -      -       +      -
    114A  VAL*     4.7     8.7    -      -       +      +
    115A  VAL*     4.0    18.8    -      -       +      -
    118A  ALA*     3.8    25.3    -      -       +      +
    122A  ASN*     4.4     2.9    +      -       -      -
    153A  ILE*     3.0    38.7    +      -       +      +
    154A  ALA      4.0     0.4    -      -       -      +
    156A  ALA*     1.3    80.3    -      -       +      +
    158A  VAL*     1.3    57.2    +      -       -      +
    160A  SER*     3.2     8.0    +      -       -      -
    161A  PHE*     2.9    29.1    +      -       -      +
   1206A  OLC      3.5    52.1    -      -       +      +
   1202B  OLC      3.6    35.9    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 158 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154A  ALA*     2.9    23.5    +      -       +      +
    155A  ALA*     4.1     4.3    -      -       -      +
    157A  TRP*     1.3    75.6    -      -       -      +
    159A  LEU*     1.3    62.7    +      -       +      +
    161A  PHE*     3.2     4.2    +      -       +      +
    162A  VAL*     2.9    40.6    +      -       +      +
    421B  LEU*     3.8    22.0    -      -       +      -
   1202B  OLC      3.7    28.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 159 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121A  MET*     3.8    23.6    -      -       +      -
    155A  ALA*     2.9    32.9    +      -       +      +
    156A  ALA      3.9     2.5    -      -       -      +
    158A  VAL*     1.3    82.2    -      -       +      +
    160A  SER*     1.3    58.3    +      -       -      +
    162A  VAL*     3.9     9.8    -      -       +      +
    163A  LEU*     2.9    48.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 160 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114A  VAL*     3.5    23.6    -      -       -      -
    117A  ASN*     2.9    32.1    +      -       -      +
    118A  ALA*     3.2    16.6    +      -       -      -
    121A  MET*     3.8     1.6    -      -       -      -
    156A  ALA      2.7    22.8    +      -       -      -
    157A  TRP      3.2     5.8    +      -       -      -
    159A  LEU*     1.3    76.7    -      -       -      +
    161A  PHE*     1.3    57.0    +      -       -      +
    163A  LEU*     3.8     0.6    -      -       -      -
    164A  TRP*     2.9    35.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 161 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114A  VAL*     3.9    15.7    -      -       +      +
    157A  TRP      2.9    13.4    +      -       -      +
    158A  VAL*     3.5     9.4    -      -       -      +
    160A  SER*     1.3    76.7    -      -       -      +
    162A  VAL*     1.3    67.9    +      -       +      +
    165A  ALA*     2.9    59.0    +      -       +      +
    166A  PRO*     3.3     2.5    -      -       +      +
    169A  LEU*     5.8     2.7    -      -       +      -
   1206A  OLC      4.2    30.5    -      -       +      -
    209B  VAL*     4.3    22.7    -      -       +      -
   1202B  OLC      4.9    15.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 162 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158A  VAL*     2.9    33.8    +      -       +      +
    159A  LEU*     3.9    12.3    -      -       +      +
    161A  PHE*     1.3    84.5    -      -       +      +
    163A  LEU*     1.3    64.0    +      -       +      +
    166A  PRO*     3.1    26.4    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 163 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117A  ASN*     5.0     4.5    -      -       -      +
    121A  MET*     5.5     2.9    -      -       -      -
    159A  LEU*     2.9    36.4    +      -       +      +
    160A  SER*     3.9     3.6    -      -       -      +
    162A  VAL*     1.3    85.4    -      -       +      +
    164A  TRP*     1.3    63.9    +      -       +      +
    166A  PRO*     4.3     1.3    -      -       -      +
    167A  ALA*     4.2     4.3    +      -       -      +
   1208A  OLC      3.1    81.4    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 164 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113A  TYR*     3.5    37.5    -      +       +      -
    114A  VAL*     3.8    14.4    -      -       +      +
    117A  ASN*     3.2    43.6    +      -       +      +
    160A  SER      2.9    15.9    +      -       -      +
    163A  LEU*     1.3    78.9    -      -       +      +
    165A  ALA*     1.3    68.5    +      -       -      +
    166A  PRO      3.3     2.0    -      -       -      -
    167A  ALA*     3.1     6.9    +      -       +      +
    168A  ILE*     3.1    43.1    +      -       +      +
    187A  ILE*     4.2     4.7    -      -       +      -
    189A  PHE*     5.1     5.6    -      +       -      -
    190A  LEU*     4.1    17.9    -      -       +      -
    199A  THR*     3.4    33.7    -      -       +      -
    203A  ALA*     4.8     1.3    -      -       +      -
   1201A  0HK      3.5    24.0    -      -       +      +
   1208A  OLC      3.7    26.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 165 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110A  ALA*     5.0     6.3    -      -       +      -
    114A  VAL*     4.1     7.5    -      -       +      +
    161A  PHE*     2.9    58.2    +      -       +      +
    164A  TRP*     1.3    73.7    -      -       -      +
    166A  PRO*     1.3    58.2    -      -       +      +
    168A  ILE*     4.8     3.1    -      -       -      -
    169A  LEU*     2.9    48.3    +      -       +      +
    170A  PHE*     5.3     0.4    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 166 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161A  PHE*     3.3     8.1    -      -       +      +
    162A  VAL*     3.1    31.9    -      -       +      +
    163A  LEU      4.3     0.4    -      -       -      -
    164A  TRP      3.6     3.1    -      -       -      +
    165A  ALA*     1.3    92.7    -      -       +      +
    167A  ALA*     1.3    56.9    +      -       -      +
    170A  PHE*     2.8    52.0    +      -       +      +
    171A  TRP      3.5     2.1    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 167 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    163A  LEU      4.2    12.5    +      -       -      +
    164A  TRP*     3.1    12.2    +      -       +      +
    166A  PRO*     1.3    79.7    -      -       -      +
    168A  ILE*     1.3    60.1    +      -       +      +
    171A  TRP*     3.2    27.5    -      -       -      +
    189A  PHE*     3.3    44.5    +      -       +      +
   1208A  OLC      4.5    10.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 168 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106A  ASP*     4.2    13.1    -      -       -      +
    109A  LEU*     3.6    50.5    -      -       +      +
    110A  ALA*     3.8    15.3    -      -       -      +
    113A  TYR*     3.7    15.0    -      -       +      -
    164A  TRP*     3.1    26.5    +      -       +      +
    165A  ALA      4.0     2.5    -      -       -      +
    167A  ALA*     1.3    81.7    -      -       -      +
    169A  LEU*     1.3    66.1    +      -       +      +
    171A  TRP*     4.7     2.3    +      -       -      +
    172A  GLN*     4.2     9.9    +      -       -      +
    187A  ILE*     3.7    35.9    -      -       +      +
    188A  GLN*     5.8     2.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 169 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106A  ASP*     3.6    42.4    -      -       +      +
    107A  LEU*     4.7     0.7    -      -       -      +
    110A  ALA*     4.2    13.7    -      -       +      -
    161A  PHE*     5.8     2.7    -      -       +      -
    165A  ALA*     2.9    30.3    +      -       +      +
    168A  ILE*     1.3    83.0    -      -       +      +
    170A  PHE*     1.3    68.9    -      -       +      +
    171A  TRP      3.5     0.4    -      -       -      -
    172A  GLN*     3.2    25.9    +      -       -      +
    209B  VAL*     4.5    15.7    -      -       +      +
    212B  THR*     5.5     7.2    -      -       +      -
    213B  VAL*     3.9    22.9    -      -       +      -
    216B  ILE*     3.3    18.9    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 170 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165A  ALA      5.3     0.2    -      -       -      -
    166A  PRO*     2.8    35.0    +      -       +      +
    169A  LEU*     1.3    80.2    -      -       +      +
    171A  TRP*     1.3    60.5    +      -       -      +
    172A  GLN      3.3     3.1    -      -       -      -
    173A  PHE*     3.0    24.0    +      +       +      +
    174A  VAL*     3.0    33.8    +      -       +      +
    212B  THR*     3.5    31.9    -      -       +      -
    215B  TYR*     6.1     4.0    -      +       -      -
    216B  ILE*     3.7    21.3    -      -       +      -
----------------------------------------------------------
 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