Contacts of the helix formed by residues 242 - 270 (chain F) in PDB entry 5UHE


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 ASN 242 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240F  LEU      4.0     0.8    +      -       -      -
    241F  LEU*     1.3    74.2    -      -       -      +
    243F  ALA*     1.3    91.8    +      -       -      +
    244F  GLU*     3.3    28.7    +      -       -      +
    245F  GLU*     3.2    34.5    +      -       +      +
    246F  GLU*     3.0    27.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 243 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    241F  LEU      4.0     0.6    +      -       -      -
    242F  ASN*     1.3    89.1    +      -       -      +
    244F  GLU*     1.3    58.2    +      -       +      +
    246F  GLU*     3.5    12.2    -      -       -      +
    247F  VAL*     3.3    16.9    -      -       -      +
    342F  LYS*     4.0    36.9    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 244 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242F  ASN*     3.8    24.5    +      -       +      +
    243F  ALA*     1.3    75.9    -      -       +      +
    245F  GLU*     1.3    68.1    -      -       +      +
    246F  GLU      3.2     0.4    -      -       -      -
    247F  VAL*     3.2    23.1    +      -       +      +
    248F  GLU*     3.2    13.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 245 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240F  LEU      4.3     3.5    -      -       -      +
    241F  LEU*     3.7    22.8    -      -       +      +
    242F  ASN*     3.2    39.2    +      -       +      +
    244F  GLU*     1.3    78.9    -      -       +      +
    246F  GLU*     1.3    63.4    +      -       -      +
    248F  GLU*     3.4    15.0    +      -       -      +
    249F  LEU*     3.3    24.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 246 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    241F  LEU*     3.6    28.9    -      -       +      +
    242F  ASN      3.0    18.3    +      -       -      +
    243F  ALA      3.5     8.9    -      -       -      +
    245F  GLU*     1.3    74.0    -      -       -      +
    247F  VAL*     1.3    65.6    +      -       -      +
    249F  LEU*     3.2     5.4    +      -       -      +
    250F  ALA*     3.0    23.5    +      -       -      +
    295F  LEU*     4.6     8.6    -      -       +      +
    299F  ASN*     4.1     5.6    -      -       -      +
    335F  PHE*     5.4     6.2    -      -       +      -
    342F  LYS*     3.2    28.3    +      -       -      -
    343F  PHE*     3.1    38.8    +      -       +      +
      6H    T      3.4    22.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 247 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243F  ALA      3.3    18.4    -      -       -      +
    244F  GLU*     3.3    15.7    -      -       +      +
    246F  GLU*     1.3    77.7    -      -       +      +
    248F  GLU*     1.3    51.5    +      -       -      +
    250F  ALA*     3.2     7.7    +      -       -      +
    251F  LYS*     2.7    46.2    +      -       +      +
    335F  PHE*     5.9     0.7    -      -       -      -
    337F  TYR*     4.0    31.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 248 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244F  GLU      3.2     8.0    +      -       -      +
    245F  GLU*     3.6    16.0    -      -       -      +
    246F  GLU      3.3     0.2    -      -       -      -
    247F  VAL*     1.3    80.4    -      -       -      +
    249F  LEU*     1.3    62.8    +      -       -      +
    251F  LYS*     3.1    12.4    +      -       +      +
    252F  ARG*     2.8    58.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 249 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    241F  LEU*     3.6    22.9    -      -       +      -
    245F  GLU      3.3     9.4    +      -       -      +
    246F  GLU      3.2     8.8    +      -       -      +
    248F  GLU*     1.3    84.6    -      -       -      +
    250F  ALA*     1.3    56.0    +      -       -      +
    252F  ARG*     3.0    36.0    +      -       -      +
    253F  ILE*     2.8    36.1    +      -       +      +
    291F  ALA*     4.1    12.6    -      -       +      +
    294F  HIS*     3.3    32.3    -      -       +      +
    295F  LEU*     3.7    32.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 250 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    246F  GLU      3.0    13.0    +      -       -      +
    247F  VAL*     3.5     7.2    -      -       -      +
    249F  LEU*     1.3    75.5    -      -       -      +
    251F  LYS*     1.3    63.2    +      -       -      +
    253F  ILE*     3.4    12.1    +      -       -      +
    254F  GLU*     3.0    29.3    +      -       +      +
    295F  LEU*     4.7     4.2    -      -       +      +
    335F  PHE*     3.9    33.0    -      -       +      +
    337F  TYR*     4.0    16.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 251 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247F  VAL*     2.7    26.2    +      -       +      +
    248F  GLU*     3.2    15.7    -      -       -      +
    250F  ALA*     1.3    75.9    -      -       -      +
    252F  ARG*     1.3    62.0    +      -       +      +
    254F  GLU*     3.6     3.8    -      -       -      +
    255F  ALA*     3.5    18.7    +      -       -      +
    337F  TYR*     4.0    42.2    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 252 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248F  GLU*     2.8    36.8    +      -       +      +
    249F  LEU*     3.0    34.9    +      -       -      +
    251F  LYS*     1.3    77.2    -      -       +      +
    253F  ILE*     1.3    59.9    +      -       -      +
    255F  ALA*     3.4     7.4    +      -       -      +
    256F  GLY*     2.8    25.6    +      -       -      -
    284F  ILE*     5.1     0.9    -      -       -      +
    287F  ASP*     2.4    53.0    +      -       -      +
    288F  GLY*     3.8     5.6    +      -       -      -
    290F  ARG*     5.4     5.9    -      -       -      +
    291F  ALA*     4.0    21.1    -      -       +      +
    294F  HIS*     5.5     3.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 253 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249F  LEU      2.8    26.4    +      -       -      +
    250F  ALA*     3.4     7.6    +      -       -      +
    252F  ARG*     1.3    72.5    -      -       -      +
    254F  GLU*     1.3    56.7    +      -       -      +
    256F  GLY      3.0     0.6    +      -       -      +
    257F  LEU*     2.4    55.1    +      -       +      +
    288F  GLY      3.9    12.6    -      -       -      +
    291F  ALA*     3.8     7.2    -      -       +      -
    292F  LYS*     3.6    43.5    -      -       +      +
    295F  LEU*     4.2    18.6    -      -       +      -
    332F  VAL*     4.2    19.1    -      -       +      +
    333F  GLU*     5.3     7.6    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 254 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250F  ALA      3.0    19.2    +      -       -      +
    251F  LYS      3.6     7.0    -      -       -      +
    253F  ILE*     1.3    75.5    -      -       -      +
    255F  ALA*     1.3    52.8    +      -       -      +
    257F  LEU*     3.6     7.5    -      -       +      +
    258F  TYR*     2.8    38.1    +      -       -      +
    335F  PHE      5.4     6.6    -      -       -      +
    336F  ASP*     4.5     9.0    -      -       -      +
    337F  TYR*     3.3    37.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 255 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251F  LYS      3.5     8.8    +      -       -      +
    252F  ARG*     3.4     9.8    +      -       -      +
    254F  GLU*     1.3    78.5    -      -       -      +
    256F  GLY*     1.3    58.3    +      -       -      +
    258F  TYR*     3.1     5.1    +      -       -      +
    259F  ALA*     2.9    32.2    +      -       -      +
    284F  ILE*     3.6    16.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 256 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    252F  ARG      2.8    15.3    +      -       -      -
    253F  ILE      3.4     2.2    -      -       -      -
    255F  ALA*     1.3    77.8    -      -       -      +
    257F  LEU*     1.3    59.6    +      -       -      +
    258F  TYR      3.2     0.7    +      -       -      -
    259F  ALA*     3.4     2.8    +      -       -      +
    260F  THR*     2.9    25.5    +      -       -      -
    284F  ILE*     3.6    26.6    -      -       -      +
    285F  CYS*     4.1     4.7    -      -       -      -
    288F  GLY*     3.7    11.4    -      -       -      -
    289F  ASP      5.5     0.4    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 257 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253F  ILE*     2.4    37.7    +      -       +      +
    254F  GLU*     3.6     7.2    -      -       +      +
    256F  GLY*     1.3    71.4    -      -       -      -
    258F  TYR*     1.3    60.1    +      -       -      +
    260F  THR*     3.9     8.7    +      -       -      +
    261F  GLN*     3.6    17.5    +      -       -      +
    288F  GLY      5.5     0.4    -      -       -      -
    333F  GLU*     3.8    37.7    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 258 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254F  GLU      2.8    19.0    +      -       -      +
    255F  ALA*     3.6     6.7    -      -       -      +
    256F  GLY      3.1     0.2    -      -       -      -
    257F  LEU*     1.3    76.9    -      -       -      +
    259F  ALA*     1.3    66.2    +      -       -      +
    260F  THR      3.0     1.8    -      -       -      -
    261F  GLN*     2.9    32.4    +      -       +      +
    262F  LEU*     3.2    11.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 259 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    255F  ALA      2.9    15.7    +      -       -      +
    256F  GLY      3.9     4.7    -      -       -      +
    258F  TYR*     1.3    75.5    -      -       -      +
    260F  THR*     1.3    61.1    +      -       -      +
    262F  LEU*     3.4    16.8    -      -       -      +
    263F  MET*     3.4    17.9    -      -       -      +
    281F  MET*     3.9    40.7    -      -       +      +
    284F  ILE*     4.3    11.2    -      -       +      -
    285F  CYS*     4.4     5.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 260 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256F  GLY      2.9    18.0    +      -       -      -
    257F  LEU*     3.9    10.1    -      -       -      -
    258F  TYR      3.0     0.6    -      -       -      -
    259F  ALA*     1.3    76.2    -      -       -      +
    261F  GLN*     1.3    58.9    +      -       -      +
    262F  LEU      3.2     0.2    -      -       -      -
    263F  MET*     3.6    11.0    +      -       +      +
    264F  THR*     2.3    42.3    +      -       -      +
    285F  CYS*     3.1    25.1    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 261 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    257F  LEU      3.6    10.5    +      -       -      +
    258F  TYR*     2.9    26.9    +      -       +      +
    260F  THR*     1.3    76.5    -      -       -      +
    262F  LEU*     1.3    68.2    +      -       -      +
    264F  THR*     4.0     8.8    -      -       -      +
    265F  GLU*     3.8    33.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 262 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258F  TYR      3.2     9.7    +      -       -      +
    259F  ALA*     3.4     9.6    -      -       -      +
    261F  GLN*     1.3    81.2    -      -       -      +
    263F  MET*     1.3    68.3    +      -       +      +
    264F  THR      3.1     0.2    +      -       -      -
    265F  GLU*     3.4     2.4    +      -       -      +
    266F  LEU*     3.2    42.5    +      -       +      +
    273F  LEU*     4.4    11.4    -      -       +      -
    281F  MET*     3.5    41.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 263 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259F  ALA      3.4    18.2    +      -       -      +
    260F  THR*     4.3    13.2    -      -       +      +
    262F  LEU*     1.3    78.3    -      -       +      +
    264F  THR*     1.3    58.3    +      -       -      +
    266F  LEU*     3.6    12.1    -      -       +      +
    267F  SER*     2.9    31.2    +      -       -      -
    273F  LEU*     5.7     3.1    -      -       +      -
    278F  ARG*     4.9    13.0    -      -       +      -
    281F  MET*     3.9    28.7    -      -       +      -
    282F  MET*     3.8    33.2    -      -       +      +
    285F  CYS*     4.3    15.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 264 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260F  THR*     2.3    36.6    +      -       -      +
    261F  GLN*     3.9    15.3    -      -       -      +
    262F  LEU      3.1     0.6    -      -       -      -
    263F  MET*     1.3    78.6    -      -       -      +
    265F  GLU*     1.3    64.0    +      -       +      +
    266F  LEU      3.4     0.2    +      -       -      -
    267F  SER*     3.5    10.5    +      -       -      -
    268F  GLU*     3.8     9.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 265 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261F  GLN*     3.8    27.4    +      -       -      +
    262F  LEU      3.4     6.9    +      -       -      +
    264F  THR*     1.3    78.6    -      -       +      +
    266F  LEU*     1.3    65.1    +      -       +      +
    267F  SER      3.4     0.2    -      -       -      -
    268F  GLU*     3.7    16.6    +      -       -      +
    269F  ARG*     3.4    22.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 266 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262F  LEU*     3.2    39.9    +      -       +      +
    263F  MET*     3.3    12.1    +      -       +      +
    264F  THR      3.2     0.2    -      -       -      -
    265F  GLU*     1.3    82.5    -      -       +      +
    267F  SER*     1.3    59.6    +      -       -      +
    268F  GLU      3.2     0.7    -      -       -      -
    269F  ARG*     3.2    25.4    -      -       -      +
    270F  GLY      2.9    24.8    +      -       -      -
    271F  GLU*     3.4    23.7    -      -       +      +
    272F  LYS*     5.3     3.8    -      -       -      -
    273F  LEU*     4.9    19.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 267 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    263F  MET      2.9    15.7    +      -       -      -
    264F  THR*     3.5     6.9    +      -       -      -
    265F  GLU      3.4     0.2    -      -       -      -
    266F  LEU*     1.3    76.7    -      -       -      +
    268F  GLU*     1.3    63.0    +      -       -      +
    270F  GLY*     3.8    11.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 268 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    264F  THR      3.8     8.2    +      -       -      +
    265F  GLU*     3.7    17.1    +      -       -      +
    266F  LEU      3.2     0.4    -      -       -      -
    267F  SER*     1.3    80.7    -      -       -      +
    269F  ARG*     1.3    61.4    +      -       -      +
    270F  GLY      3.6     0.3    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 269 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265F  GLU      3.4    12.7    +      -       -      +
    266F  LEU*     3.2    32.6    -      -       -      +
    268F  GLU*     1.3    80.9    -      -       +      +
    270F  GLY*     1.3    56.2    +      -       -      +
    271F  GLU*     2.6    50.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 270 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266F  LEU      2.9    10.0    +      -       -      +
    267F  SER*     3.8    10.2    +      -       -      +
    268F  GLU      3.3     2.2    -      -       -      -
    269F  ARG*     1.3    80.2    -      -       -      +
    271F  GLU*     1.3    62.9    +      -       -      +
    272F  LYS*     3.7    17.8    +      -       -      +
----------------------------------------------------------
 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