Contacts of the helix formed by residues 226 - 249 (chain B) in PDB entry 3V3E


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 226 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    222B  SER      3.1    17.9    +      -       -      -
    223B  ARG*     3.6     8.7    -      -       -      -
    224B  LEU      3.2     0.4    -      -       -      -
    225B  LEU*     1.3    76.9    -      -       -      +
    227B  LYS*     1.3    59.0    +      -       -      +
    228B  LEU      3.2     0.4    +      -       -      -
    229B  PRO*     3.6    15.2    -      -       -      +
    230B  GLU*     3.4    20.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 227 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118B  LEU*     5.8     0.4    -      -       +      -
    158B  PHE*     3.6    29.4    -      -       +      -
    161B  SER*     2.6    38.1    +      -       -      -
    162B  LEU*     3.8    21.3    -      -       +      +
    165B  LEU*     4.0    24.5    -      -       +      -
    175B  LEU*     5.0    12.1    -      -       +      -
    223B  ARG      3.5     8.6    +      -       -      +
    224B  LEU*     2.9    20.3    +      -       +      +
    226B  GLY*     1.3    76.5    -      -       -      +
    228B  LEU*     1.3    64.9    +      -       -      +
    230B  GLU*     2.8    31.5    +      -       -      +
    231B  LEU*     3.1    24.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 228 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114B  GLU*     5.0     1.0    -      -       -      +
    175B  LEU*     3.6    36.8    -      -       +      +
    178B  LEU*     4.9    17.3    -      -       +      +
    179B  VAL*     3.7    28.3    -      -       +      -
    225B  LEU*     3.0    30.5    +      -       +      +
    227B  LYS*     1.3    80.0    -      -       +      +
    229B  PRO*     1.4    68.9    -      -       +      +
    231B  LEU*     3.0    19.5    +      -       +      +
    232B  ARG*     3.1    16.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 229 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225B  LEU      3.5     9.0    -      -       -      +
    226B  GLY*     3.6    14.8    -      -       -      +
    228B  LEU*     1.4    91.0    -      -       +      +
    230B  GLU*     1.3    62.6    +      -       +      +
    232B  ARG*     3.1    13.0    +      -       +      +
    233B  THR*     3.1    23.8    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 230 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158B  PHE*     3.7    12.8    -      -       +      -
    226B  GLY      3.4    20.7    -      -       -      +
    227B  LYS*     2.8    40.8    +      -       -      +
    228B  LEU      3.4     0.4    -      -       -      -
    229B  PRO*     1.3    77.1    -      -       +      +
    231B  LEU*     1.3    62.7    +      -       -      +
    233B  THR*     3.3    10.3    +      -       -      +
    234B  LEU*     3.1    24.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 231 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114B  GLU*     3.7    38.3    -      -       +      +
    117B  ILE*     3.7    32.5    -      -       +      -
    118B  LEU*     3.8    19.3    -      -       +      +
    158B  PHE*     4.1    13.9    -      -       +      -
    179B  VAL*     3.7    29.8    -      -       +      -
    227B  LYS      3.1    13.9    +      -       -      +
    228B  LEU*     3.0    16.4    +      -       +      +
    230B  GLU*     1.3    74.6    -      -       -      +
    232B  ARG*     1.3    60.0    +      -       -      +
    234B  LEU*     3.2     8.4    +      -       +      +
    235B  CYS*     2.9    27.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 232 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114B  GLU*     2.9    29.4    +      -       -      +
    179B  VAL      5.2     0.4    +      -       -      -
    182B  THR*     3.8    20.0    +      -       -      +
    183B  ASP      4.5     5.1    +      -       -      -
    184B  ARG*     3.3    32.8    -      -       -      +
    228B  LEU      3.1    16.3    +      -       -      +
    229B  PRO*     3.4    13.0    -      -       +      +
    231B  LEU*     1.3    76.0    -      -       -      +
    233B  THR*     1.3    63.0    +      -       -      +
    235B  CYS*     3.2    11.7    +      -       -      +
    236B  THR*     3.1    25.0    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 233 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229B  PRO      3.1    10.3    +      -       -      -
    230B  GLU*     3.4    13.5    -      -       -      +
    231B  LEU      3.2     0.2    -      -       -      -
    232B  ARG*     1.3    79.4    -      -       -      +
    234B  LEU*     1.3    61.3    +      -       +      +
    236B  THR*     3.3    22.2    +      -       -      -
    237B  GLN*     3.4    21.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 234 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117B  ILE*     3.9    21.8    -      -       +      -
    151B  TRP*     2.8    37.8    +      -       -      +
    154B  SER*     3.4    41.1    -      -       -      +
    155B  ILE*     3.9     7.4    -      -       +      +
    158B  PHE*     3.5    43.1    -      -       +      -
    230B  GLU      3.1    15.9    +      -       -      +
    231B  LEU*     3.2     7.6    +      -       -      +
    233B  THR*     1.3    72.0    -      -       +      +
    235B  CYS*     1.3    65.3    +      -       -      +
    236B  THR      3.1     1.6    -      -       -      -
    237B  GLN*     3.1    16.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 235 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110B  SER      5.2     6.1    -      -       -      -
    113B  LEU*     3.8    28.0    -      -       +      +
    114B  GLU*     3.9    25.4    -      -       +      -
    117B  ILE*     3.5    13.6    -      -       +      +
    151B  TRP*     5.0     0.2    -      -       -      -
    231B  LEU      2.9    15.5    +      -       -      +
    232B  ARG*     3.3    12.3    -      -       -      +
    234B  LEU*     1.3    71.3    -      -       -      +
    236B  THR*     1.3    64.5    +      -       -      +
    238B  GLY*     2.8    13.4    +      -       -      +
    239B  LEU*     3.0    24.8    +      -       -      +
    264B  THR*     6.5     0.9    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 236 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244A  TYR*     4.5    16.4    -      -       +      -
    247A  LEU*     3.8    24.2    -      -       +      -
    232B  ARG      3.1    12.8    +      -       -      -
    233B  THR*     3.3    13.0    +      -       -      -
    234B  LEU      3.1     0.6    -      -       -      -
    235B  CYS*     1.3    77.7    -      -       -      +
    237B  GLN*     1.3    58.2    +      -       -      +
    239B  LEU*     3.1    14.8    +      -       -      +
    240B  GLN*     2.9    36.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 237 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150B  ASP*     5.2     1.4    -      -       -      +
    151B  TRP*     3.4    22.6    +      -       +      +
    154B  SER*     2.8    37.6    +      -       -      -
    233B  THR*     3.4    21.5    +      -       +      +
    234B  LEU*     3.1    22.8    +      -       -      +
    235B  CYS      3.1     0.6    -      -       -      -
    236B  THR*     1.3    75.4    -      -       -      +
    238B  GLY*     1.3    58.2    +      -       -      +
    240B  GLN*     3.5    19.2    +      -       -      +
    241B  ARG*     3.1    26.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 238 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113B  LEU*     4.3     7.2    -      -       -      -
    151B  TRP*     3.4    36.1    -      -       -      +
    234B  LEU      3.1     6.3    +      -       -      -
    235B  CYS      2.8     8.4    +      -       -      -
    237B  GLN*     1.3    75.2    -      -       -      +
    239B  LEU*     1.3    58.4    +      -       -      +
    241B  ARG*     3.1     4.0    +      -       -      +
    242B  ILE*     2.9    33.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 239 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243A  PHE*     3.9    14.1    -      -       +      -
    247A  LEU*     4.3    24.0    -      -       +      -
    113B  LEU*     3.6    21.3    -      -       +      +
    235B  CYS*     3.0    28.3    +      -       -      +
    236B  THR*     3.5    10.1    -      -       -      +
    238B  GLY*     1.3    74.3    -      -       -      +
    240B  GLN*     1.3    53.1    +      -       -      +
    242B  ILE*     3.2     3.7    +      -       +      +
    243B  PHE*     2.7    34.7    +      -       -      +
    260B  ILE*     5.7     0.7    -      -       +      -
    261B  PHE*     3.4    31.4    -      -       +      -
    264B  THR*     4.0    31.9    -      -       -      +
    265B  LEU*     4.7     5.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 240 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240A  GLN*     4.8     8.6    +      -       -      +
    243A  PHE*     3.9    23.6    -      -       +      -
    244A  TYR*     3.4    43.1    -      -       +      +
    247A  LEU*     4.8     0.4    -      -       +      -
    236B  THR*     2.9    19.0    +      -       +      +
    237B  GLN*     3.5    31.0    +      -       -      +
    239B  LEU*     1.3    74.9    -      -       -      +
    241B  ARG*     1.3    64.4    +      -       -      +
    243B  PHE*     3.4     4.2    +      -       -      +
    244B  TYR*     2.9    23.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 241 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67B  GLU*     3.6    17.2    +      -       -      +
     75B  PHE*     4.1    14.1    -      -       +      -
    146B  ARG      3.1    25.7    +      -       -      -
    147B  GLY      3.0    15.5    +      -       -      -
    148B  PHE      3.4    20.9    -      -       -      +
    149B  GLY*     3.8    16.1    -      -       -      +
    151B  TRP*     4.6     4.7    -      -       +      -
    237B  GLN      3.1    14.6    +      -       -      +
    238B  GLY*     3.1     9.8    +      -       -      +
    240B  GLN*     1.3    74.8    -      -       -      +
    242B  ILE*     1.3    59.8    +      -       -      +
    244B  TYR*     3.1    27.1    +      -       -      +
    245B  LEU*     2.9    57.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 242 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75B  PHE*     4.1    20.6    -      -       +      -
     76B  TYR*     4.3    11.0    -      -       +      +
     79B  LEU*     4.4     9.6    -      -       +      -
    113B  LEU*     4.5    20.2    -      -       +      -
    151B  TRP*     6.2     0.4    -      -       +      -
    238B  GLY      2.9    18.4    +      -       -      +
    239B  LEU*     3.7     5.2    -      -       +      +
    241B  ARG*     1.3    72.9    -      -       -      +
    243B  PHE*     1.3    66.7    +      -       -      +
    245B  LEU*     3.1     6.5    +      -       -      +
    246B  LYS*     2.9    37.1    +      -       +      +
    253B  PRO*     4.7     6.1    -      -       +      -
    257B  ILE*     4.1    21.8    -      -       +      -
    261B  PHE*     3.4    32.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 243 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    239A  LEU*     3.8    13.2    -      -       +      -
    240A  GLN*     4.0    17.9    -      -       +      -
    243A  PHE*     3.6    46.9    -      +       +      -
    261A  PHE*     3.7    34.1    -      +       -      -
    265A  LEU*     4.1    14.6    -      -       +      -
    267A  PHE*     3.8    27.6    -      +       -      -
    239B  LEU      2.7    21.0    +      -       -      +
    240B  GLN      3.6     4.9    -      -       -      +
    242B  ILE*     1.3    73.8    -      -       -      +
    244B  TYR*     1.3    65.7    +      -       -      +
    246B  LYS*     3.3     3.5    +      -       -      +
    247B  LEU*     3.0    37.8    +      -       +      +
    261B  PHE*     3.5    12.4    -      +       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 244 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236A  THR*     4.1    21.3    -      -       +      -
    240A  GLN*     3.6    35.2    -      -       +      +
     67B  GLU*     3.1    29.2    +      -       -      -
    240B  GLN      2.9    13.9    +      -       -      +
    241B  ARG*     3.1    37.4    +      -       -      +
    243B  PHE*     1.3    83.4    -      -       -      +
    245B  LEU*     1.3    65.1    +      -       +      +
    247B  LEU*     3.3     7.1    +      -       +      +
    248B  GLU*     3.1    41.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 245 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67B  GLU*     4.5     0.2    -      -       +      -
     72B  VAL*     4.0    23.3    -      -       +      +
     75B  PHE*     3.5    38.8    -      -       +      -
     76B  TYR*     3.5    20.9    -      -       +      +
    147B  GLY      4.1     3.4    -      -       -      +
    241B  ARG*     2.9    57.8    +      -       +      +
    242B  ILE*     4.0     0.9    -      -       -      +
    244B  TYR*     1.3    77.2    -      -       +      +
    246B  LYS*     1.3    61.4    +      -       -      +
    248B  GLU*     3.5    23.3    -      -       -      +
    249B  ASP*     2.7    27.9    +      -       -      -
    250B  LEU      4.3     1.0    +      -       -      -
    251B  VAL      4.8     4.1    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 246 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266A  PRO*     4.0     9.5    -      -       -      +
    267A  PHE*     3.5    38.0    -      -       +      +
     76B  TYR*     4.3     1.1    -      -       -      +
    242B  ILE*     2.9    32.9    +      -       +      +
    243B  PHE*     3.7     3.4    -      -       -      +
    245B  LEU*     1.3    77.4    -      -       -      +
    247B  LEU*     1.3    63.1    +      -       -      +
    249B  ASP*     3.4    18.2    -      -       -      +
    251B  VAL      5.9     0.2    -      -       -      -
    252B  PRO*     6.3     0.4    -      -       -      -
    253B  PRO*     3.9    21.2    -      -       +      +
    258B  ASP*     2.6    30.0    +      -       -      +
    261B  PHE*     3.5    25.4    -      -       +      -
    262B  MET*     3.0    27.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 247 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236A  THR*     3.6    33.0    -      -       +      +
    239A  LEU*     4.1    28.7    -      -       +      -
    240A  GLN*     5.0     2.2    -      -       +      -
    264A  THR*     4.5     4.0    -      -       +      +
    265A  LEU*     4.5    10.1    -      -       +      -
    266A  PRO*     4.0    27.6    -      -       +      +
    267A  PHE*     4.3     4.0    -      -       +      -
    243B  PHE*     3.0    36.2    +      -       +      +
    244B  TYR*     3.4    11.2    -      -       -      +
    245B  LEU      3.1     0.2    -      -       -      -
    246B  LYS*     1.3    78.1    -      -       -      +
    248B  GLU*     1.3    65.6    +      -       -      +
    249B  ASP*     3.9     3.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 248 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67B  GLU*     2.0    37.6    -      -       -      +
     72B  VAL*     4.3     2.9    -      -       -      +
    244B  TYR*     3.1    26.6    +      -       +      +
    245B  LEU*     3.5    26.6    -      -       -      +
    247B  LEU*     1.3    80.0    -      -       -      +
    249B  ASP*     1.3    68.1    +      -       -      +
    250B  LEU*     3.4    40.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 249 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266A  PRO*     5.0    12.4    -      -       +      +
    245B  LEU      2.7    21.1    +      -       -      -
    246B  LYS*     3.4    15.0    -      -       -      +
    247B  LEU      3.2     3.6    -      -       -      +
    248B  GLU*     1.3    77.1    -      -       -      +
    250B  LEU*     1.3    63.3    +      -       -      +
    251B  VAL      4.6     2.5    -      -       -      +
    252B  PRO*     4.3    22.3    -      -       -      +
----------------------------------------------------------
 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