Contacts of the helix formed by residues 283 - 307 (chain E) in PDB entry 2BG9


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 283 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131E  VAL*     6.0     1.4    -      -       -      +
    282E  ILE*     1.3    74.4    -      -       -      +
    284E  LYS*     1.3    73.1    +      -       -      +
    286E  LEU*     2.9    16.2    -      -       -      +
    287E  ILE*     2.6    38.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 284 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    282E  ILE*     3.7    14.6    -      -       +      +
    283E  GLY*     1.3    90.9    -      -       -      +
    285E  TYR*     1.3    69.1    +      -       +      +
    287E  ILE*     2.7    29.7    +      -       +      +
    288E  PHE*     2.9    24.2    -      -       +      -
    471E  LEU*     4.2    21.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 285 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134E  PHE*     4.1    17.3    -      +       +      -
    135E  PRO*     4.4     2.9    -      -       +      -
    136E  PHE*     2.4    55.2    -      +       -      -
    282E  ILE*     4.2    31.1    +      -       +      -
    284E  LYS*     1.3    80.2    -      -       +      +
    286E  LEU*     1.3    62.5    +      -       -      +
    287E  ILE      3.4     0.3    +      -       -      -
    288E  PHE*     3.5    19.4    +      +       -      -
    289E  VAL*     3.4    25.3    +      -       -      +
    468E  THR*     4.8    16.8    -      -       +      -
    471E  LEU*     3.2    35.5    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 286 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213D  TYR*     5.0    11.2    -      -       +      -
    276E  SER*     5.7     0.9    -      -       -      +
    281E  LEU*     3.5    28.5    -      -       +      -
    282E  ILE      2.8    27.2    +      -       -      +
    283E  GLY*     2.9    17.0    -      -       -      +
    285E  TYR*     1.3    79.5    -      -       -      +
    287E  ILE*     1.3    61.3    +      -       -      +
    289E  VAL*     3.5     5.2    +      -       -      +
    290E  MET*     3.4    61.4    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 287 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283E  GLY      2.6    34.1    +      -       -      +
    284E  LYS*     2.7    30.1    -      -       +      +
    286E  LEU*     1.3    69.5    -      -       -      +
    288E  PHE*     1.3    78.2    +      -       +      +
    290E  MET*     5.2     4.3    -      -       -      -
    291E  PHE*     2.7    55.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 288 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284E  LYS*     2.9    34.1    +      -       +      -
    285E  TYR*     3.6    20.2    -      +       -      +
    286E  LEU      3.5     0.4    -      -       -      -
    287E  ILE*     1.3    92.9    -      -       +      +
    289E  VAL*     1.3    56.4    +      -       +      +
    291E  PHE*     3.8    15.0    -      +       -      -
    292E  VAL*     2.6    48.4    +      -       +      +
    463E  LEU*     5.8     2.5    -      -       +      -
    464E  ALA*     4.6    16.6    -      -       +      -
    467E  LEU*     3.8    36.3    -      -       +      -
    468E  THR*     4.9    13.9    -      -       -      +
    471E  LEU*     4.5    21.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 289 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225E  ILE*     5.5    15.5    -      -       +      -
    268E  ILE*     4.8    18.6    -      -       +      -
    272E  VAL*     6.1     2.2    -      -       +      -
    285E  TYR      3.4    13.0    +      -       -      +
    286E  LEU*     3.9     8.1    -      -       -      +
    287E  ILE      3.3     1.0    -      -       -      -
    288E  PHE*     1.3    75.4    -      -       +      +
    290E  MET*     1.3    62.1    +      -       +      +
    292E  VAL*     3.5     3.2    -      -       -      +
    293E  SER*     2.5    44.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 290 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216D  VAL*     6.5     1.6    -      -       +      -
    220D  ILE*     5.8     9.0    -      -       +      -
    286E  LEU*     3.4    45.9    +      -       +      +
    287E  ILE*     4.6     3.4    -      -       -      +
    289E  VAL*     1.3    86.5    -      -       +      +
    291E  PHE*     1.3    52.5    +      -       +      +
    293E  SER*     2.5    24.3    +      -       -      +
    294E  LEU*     2.5    29.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 291 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    287E  ILE*     2.7    55.1    +      -       +      +
    288E  PHE*     3.8    15.3    -      +       -      -
    290E  MET*     1.3    75.3    -      -       -      +
    292E  VAL*     1.3    69.0    +      -       +      +
    293E  SER      3.0     1.1    -      -       -      -
    294E  LEU*     3.8     7.1    -      -       +      +
    295E  VAL*     2.8    44.9    +      -       +      +
    460E  LEU*     5.5     4.3    -      -       +      -
    463E  LEU*     3.6    31.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 292 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229E  CYS*     5.3    12.1    -      -       -      -
    288E  PHE*     2.6    35.6    +      -       +      +
    289E  VAL*     3.8     2.9    -      -       -      +
    291E  PHE*     1.3    85.2    -      -       +      +
    293E  SER*     1.3    51.0    +      -       -      +
    295E  VAL*     3.4     7.4    +      -       -      +
    296E  ILE*     2.4    42.3    +      -       +      +
    460E  LEU*     4.4    27.6    -      -       +      +
    461E  GLY*     6.1     0.9    -      -       -      -
    463E  LEU*     5.3     2.2    -      -       +      -
    464E  ALA*     4.0    25.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 293 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265E  LEU*     4.6     9.4    -      -       -      +
    268E  ILE*     6.6     0.2    -      -       -      -
    289E  VAL*     2.5    27.6    +      -       -      -
    290E  MET*     2.5    25.0    +      -       -      +
    292E  VAL*     1.3    73.2    -      -       -      +
    294E  LEU*     1.3    52.7    +      -       -      +
    295E  VAL      3.2     0.2    -      -       -      -
    296E  ILE*     2.8    25.8    -      -       -      +
    297E  VAL*     2.6    29.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 294 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    220D  ILE*     3.5    43.5    -      -       +      -
    224D  LEU*     5.0    13.9    -      -       +      -
    290E  MET*     2.5    30.3    +      -       +      +
    291E  PHE*     3.3     9.1    +      -       +      +
    293E  SER*     1.3    75.0    +      -       -      +
    295E  VAL*     1.3    53.0    +      -       +      +
    297E  VAL*     3.2    13.6    +      -       +      +
    298E  THR*     2.6    50.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 295 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291E  PHE*     2.8    33.3    +      -       +      +
    292E  VAL      3.8     4.7    -      -       -      +
    293E  SER      3.2     0.2    -      -       -      -
    294E  LEU*     1.3    77.4    -      -       +      +
    296E  ILE*     1.3    59.1    +      -       -      +
    298E  THR*     3.8    12.1    -      -       +      +
    299E  ASN*     2.9    34.1    +      -       +      +
    456E  LEU*     4.5     9.8    -      -       +      +
    460E  LEU*     3.4    40.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 296 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229E  CYS*     5.5     8.7    -      -       -      -
    232E  ILE*     4.4    17.9    -      -       +      -
    236E  VAL*     5.0    10.1    -      -       +      +
    240E  TYR*     3.7     6.4    +      -       -      -
    261E  GLN*     2.7    38.4    -      -       -      +
    265E  LEU*     3.0    17.0    -      -       +      -
    292E  VAL*     2.4    40.7    +      -       +      +
    293E  SER*     2.8    18.6    -      -       -      +
    295E  VAL*     1.3    74.8    -      -       -      +
    297E  VAL*     1.3    64.2    +      -       +      +
    299E  ASN*     5.4     0.9    -      -       -      -
    300E  CYS*     2.9    28.9    +      -       -      +
    460E  LEU*     4.8     6.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 297 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    224D  LEU*     3.4    37.7    -      -       +      -
    258E  LEU*     5.5     4.7    -      -       +      -
    261E  GLN*     5.2     0.2    -      -       -      +
    262E  THR*     4.0     5.6    -      -       -      +
    265E  LEU*     3.9    24.5    -      -       +      -
    293E  SER*     2.6    28.5    -      -       -      +
    294E  LEU*     3.2    21.3    -      -       +      +
    296E  ILE*     1.3    87.7    -      -       +      +
    298E  THR*     1.3    53.1    -      -       -      +
    300E  CYS*     3.0     7.2    +      -       +      +
    301E  VAL*     2.7    43.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 298 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    224D  LEU*     5.8     2.4    -      -       -      +
    227D  PHE*     5.3     1.2    -      -       +      -
    294E  LEU*     2.6    38.7    +      -       -      +
    295E  VAL*     3.4    14.0    -      -       +      +
    297E  VAL*     1.3    74.3    -      -       -      +
    299E  ASN*     1.3    53.3    +      -       +      +
    301E  VAL*     3.2     8.0    -      -       -      +
    302E  ILE*     2.7    55.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 299 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240E  TYR*     3.0    14.0    +      -       +      +
    295E  VAL*     2.9    19.5    +      -       +      +
    296E  ILE*     4.6     0.7    -      -       -      +
    298E  THR*     1.3    74.1    -      -       +      +
    300E  CYS*     1.3    52.2    +      -       -      +
    302E  ILE*     3.4    26.3    -      -       +      +
    303E  VAL*     2.7    32.6    +      -       -      +
    306E  VAL*     5.7     0.2    -      -       -      +
    449E  ALA*     6.0     0.7    -      -       -      +
    452E  TRP*     5.1     4.0    -      -       -      +
    453E  ILE*     3.1    34.5    -      -       +      +
    456E  LEU*     3.8    26.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 300 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236E  VAL*     4.4    13.2    -      -       +      -
    239E  VAL*     5.5     7.9    -      -       -      -
    240E  TYR*     3.0    14.9    +      -       -      +
    258E  LEU*     3.2    38.2    -      -       -      +
    261E  GLN*     4.1    19.5    -      -       -      +
    296E  ILE      2.9    19.3    +      -       -      +
    297E  VAL*     3.0     9.8    +      -       -      +
    298E  THR      3.0     0.8    -      -       -      -
    299E  ASN*     1.3    74.4    -      -       -      +
    301E  VAL*     1.3    60.8    +      -       -      +
    303E  VAL*     3.0    29.1    +      -       -      +
    304E  LEU*     3.4     1.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 301 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    224D  LEU*     4.7     9.9    -      -       +      -
    227D  PHE*     3.9    29.2    -      -       +      -
    228D  LEU*     3.6    32.1    -      -       +      -
    231D  LEU*     4.1    13.6    -      -       +      +
    258E  LEU*     3.9    19.3    -      -       +      -
    297E  VAL*     2.7    24.7    +      -       +      +
    298E  THR*     3.2    13.9    -      -       -      +
    300E  CYS*     1.3    70.2    -      -       -      +
    302E  ILE*     1.3    65.0    +      -       -      +
    304E  LEU*     3.1     8.0    +      -       +      +
    305E  ASN*     2.8    21.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 302 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    227D  PHE*     4.5     8.2    -      -       +      -
    298E  THR*     2.7    43.4    +      -       +      +
    299E  ASN*     3.2    29.8    -      -       -      +
    301E  VAL*     1.3    78.9    -      -       +      +
    303E  VAL*     1.3    50.6    +      -       -      +
    305E  ASN*     2.8    16.6    +      -       -      +
    306E  VAL*     2.4    55.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 303 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    239E  VAL*     3.9    28.9    -      -       +      +
    240E  TYR*     3.1    39.5    -      -       +      -
    254E  SER*     4.1     7.2    -      -       -      +
    255E  ILE*     6.1     0.7    -      -       +      -
    299E  ASN*     2.7    16.1    +      -       -      +
    300E  CYS*     3.0    13.0    -      -       -      +
    302E  ILE*     1.3    74.2    -      -       -      +
    304E  LEU*     1.3    56.6    +      -       +      +
    306E  VAL*     2.6    17.8    +      -       +      +
    307E  SER*     2.3    41.9    +      -       -      +
    449E  ALA*     5.6     6.3    -      -       +      -
    453E  ILE*     5.5     0.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 304 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    231D  LEU*     4.2    17.5    -      -       +      -
    235D  LEU*     3.9    20.0    -      -       +      -
    242D  LYS*     3.0    34.1    -      -       +      +
    245D  LEU*     4.5     4.5    -      -       +      -
    249D  VAL*     5.9     2.0    -      -       +      -
    251E  CYS*     4.7     3.1    -      -       +      +
    255E  ILE*     3.2    40.6    -      -       +      -
    258E  LEU*     6.1     5.6    -      -       +      -
    300E  CYS      3.4     1.9    +      -       -      +
    301E  VAL*     3.1    10.4    +      -       +      +
    303E  VAL*     1.3    79.1    -      -       +      +
    305E  ASN*     1.3    51.7    +      -       -      +
    306E  VAL      2.7     4.3    -      -       -      -
    307E  SER*     2.8    23.0    -      -       -      +
    308E  LEU*     2.5    41.8    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 305 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    227D  PHE*     4.3    15.9    -      -       +      -
    231D  LEU*     4.4     1.6    -      -       +      +
    238D  ASP*     5.6     1.0    -      -       -      +
    301E  VAL      2.8    11.9    +      -       -      +
    302E  ILE*     2.8    19.6    +      -       -      +
    304E  LEU*     1.3    77.7    -      -       -      +
    306E  VAL*     1.3    59.0    +      -       -      +
    308E  LEU*     3.0    41.0    -      -       +      +
    309E  ARG*     3.2    15.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 306 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299E  ASN*     5.7     0.2    -      -       -      +
    302E  ILE*     2.4    44.1    +      -       +      +
    303E  VAL*     2.6    19.2    +      -       +      +
    305E  ASN*     1.3    77.4    -      -       -      +
    307E  SER*     1.2    49.4    +      -       -      +
    308E  LEU      2.9     4.3    -      -       -      -
    309E  ARG*     2.4    47.4    +      -       -      +
    445E  VAL*     4.4    18.4    -      -       +      -
    446E  ILE*     4.4    13.7    -      -       +      -
    449E  ALA*     4.2    25.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 307 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242D  LYS*     3.0    13.2    +      -       -      +
    243E  PRO*     6.5     0.4    -      -       -      -
    251E  CYS*     4.7    16.7    +      -       -      +
    254E  SER*     5.0     4.5    -      -       -      -
    303E  VAL*     2.3    32.6    +      -       -      +
    304E  LEU*     2.8    26.4    -      -       -      +
    306E  VAL*     1.2    67.9    -      -       -      +
    308E  LEU*     1.4    52.7    +      -       -      +
    309E  ARG*     3.6     6.7    -      -       -      +
    314E  HIS*     2.3    26.1    -      -       -      +
    446E  ILE*     5.1    10.5    -      -       -      -
----------------------------------------------------------
 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