Contacts of the helix formed by residues 306 - 331 (chain B) in PDB entry 5MDH


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 ASP 306 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    304B  ILE      5.1     0.7    -      -       -      +
    305B  ASN*     1.3    70.7    -      -       -      +
    307B  PHE*     1.3    67.6    +      -       -      +
    309B  ARG*     2.8    19.4    +      -       -      +
    310B  GLU*     3.3    14.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 307 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191B  TYR*     3.7    34.1    -      +       -      -
    195B  ASN*     5.5     0.9    -      -       -      -
    209B  TYR*     4.9     6.1    -      -       -      -
    218B  LEU      5.4     0.2    -      -       -      -
    219B  LYS*     3.6    64.2    -      -       +      +
    223B  ILE*     3.9    12.6    -      -       +      -
    305B  ASN*     3.4    10.9    -      -       -      +
    306B  ASP*     1.3    76.1    -      -       -      +
    308B  SER*     1.3    56.4    +      -       -      +
    310B  GLU*     2.6    37.4    -      -       -      +
    311B  LYS*     3.7    33.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 308 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191B  TYR*     2.8    29.6    +      -       -      -
    193B  ASP*     3.9     1.6    +      -       -      -
    195B  ASN*     3.1     9.7    +      -       -      -
    196B  HIS*     6.0     1.3    -      -       -      -
    304B  ILE*     3.9     5.6    -      -       -      -
    305B  ASN*     2.6    32.1    +      -       -      +
    307B  PHE*     1.3    77.4    -      -       -      +
    309B  ARG*     1.3    59.7    +      -       -      +
    311B  LYS*     3.5     2.3    -      -       -      +
    312B  MET*     3.0    53.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 309 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277B  TYR*     2.5    36.9    +      -       -      +
    278B  GLY*     3.8    12.1    +      -       -      -
    279B  VAL*     4.9     1.8    -      -       -      +
    304B  ILE*     3.9    28.1    -      -       +      +
    305B  ASN      3.0    11.2    +      -       -      +
    306B  ASP*     2.8    16.0    +      -       -      +
    308B  SER*     1.3    76.6    -      -       -      +
    310B  GLU*     1.3    56.1    +      -       +      +
    312B  MET*     4.0    18.5    -      -       -      +
    313B  ASP*     2.6    87.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 310 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306B  ASP      3.3     9.6    +      -       -      +
    307B  PHE*     2.6    26.1    -      -       -      +
    309B  ARG*     1.3    73.1    -      -       -      +
    311B  LYS*     1.3   100.8    +      -       -      +
    313B  ASP*     4.3     7.6    -      -       +      -
    314B  LEU*     3.9    14.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 311 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189B  THR      4.4     5.1    -      -       -      +
    190B  GLN      5.7     0.4    -      -       -      +
    191B  TYR*     3.4    38.6    -      -       +      -
    223B  ILE*     5.0     5.4    -      -       +      -
    307B  PHE*     3.7    37.5    -      -       +      +
    308B  SER      3.5     8.7    -      -       -      +
    309B  ARG      3.3     1.0    +      -       -      -
    310B  GLU*     1.3   103.5    +      -       -      +
    312B  MET*     1.3    55.5    +      -       -      +
    313B  ASP      3.2     2.6    -      -       -      +
    314B  LEU*     3.5    26.9    -      -       -      +
    315B  THR*     2.7    39.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 312 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183B  TRP*     3.2    52.3    -      -       +      +
    191B  TYR*     3.9    12.1    -      -       +      -
    193B  ASP*     4.6     1.3    -      -       -      +
    196B  HIS*     5.8     0.2    -      -       +      -
    277B  TYR*     5.2     2.0    -      -       -      +
    279B  VAL*     4.9     4.3    -      -       +      +
    285B  TYR*     2.9    28.2    +      -       -      +
    304B  ILE*     3.3    38.1    -      -       +      -
    308B  SER*     3.0    34.7    +      -       -      +
    309B  ARG*     4.0    19.7    -      -       -      +
    311B  LYS*     1.3    80.2    -      -       -      +
    313B  ASP*     1.3    56.9    +      -       -      +
    315B  THR*     3.5     2.8    +      -       -      -
    316B  ALA*     3.1    22.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 313 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    278B  GLY      4.1     7.3    -      -       -      +
    279B  VAL*     5.7     0.3    -      -       -      +
    309B  ARG*     2.6    67.3    +      -       -      +
    310B  GLU*     4.3     5.7    -      -       +      -
    312B  MET*     1.3    75.3    -      -       -      +
    314B  LEU*     1.3    63.7    +      -       +      +
    316B  ALA*     3.1     9.6    +      -       -      +
    317B  LYS*     3.0    23.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 314 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189B  THR*     4.7    12.9    +      -       +      +
    310B  GLU*     3.9    17.5    -      -       +      +
    311B  LYS*     3.4    44.4    +      -       -      +
    313B  ASP*     1.3    78.9    -      -       +      +
    315B  THR*     1.4    62.5    +      -       -      +
    317B  LYS*     3.3    25.9    +      -       +      +
    318B  GLU*     3.4    12.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 315 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183B  TRP      3.6    10.9    +      -       -      -
    184B  GLY*     3.9     9.9    -      -       -      -
    185B  ASN*     3.3    30.3    -      -       +      +
    189B  THR*     3.0    44.1    +      -       -      +
    190B  GLN*     3.8     2.9    -      -       -      +
    191B  TYR*     4.3     1.7    +      -       -      +
    285B  TYR*     4.0     2.2    +      -       -      -
    311B  LYS      2.7    32.7    +      -       -      -
    312B  MET*     3.7     7.8    +      -       -      -
    314B  LEU*     1.4    70.9    -      -       -      +
    316B  ALA*     1.3    62.5    +      -       -      +
    317B  LYS      3.5     0.2    +      -       -      -
    318B  GLU*     3.5     3.5    +      -       -      +
    319B  LEU*     3.1    23.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 316 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    279B  VAL*     4.9     2.2    -      -       +      -
    280B  PRO*     4.2    25.6    -      -       +      +
    283B  LEU*     4.2     4.7    -      -       +      +
    285B  TYR*     3.9    16.1    -      -       +      -
    312B  MET      3.1    16.2    +      -       -      +
    313B  ASP*     3.2    14.6    -      -       -      +
    315B  THR*     1.3    75.1    -      -       -      +
    317B  LYS*     1.3    60.5    +      -       -      +
    319B  LEU*     3.3     6.5    +      -       -      +
    320B  ALA*     2.8    29.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 317 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313B  ASP      3.0    12.0    +      -       -      +
    314B  LEU*     3.7    21.9    -      -       +      +
    315B  THR      3.3     0.4    -      -       -      -
    316B  ALA*     1.3    74.0    -      -       -      +
    318B  GLU*     1.3    54.9    +      -       -      +
    320B  ALA*     2.7    30.3    +      -       -      +
    321B  GLU*     3.0    36.2    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 318 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98B  LYS*     3.7    23.4    +      -       +      +
    185B  ASN*     2.5    31.3    +      -       -      -
    187B  SER*     2.8    14.9    +      -       -      -
    188B  SER*     5.1     1.4    +      -       -      -
    189B  THR*     2.9    34.4    +      -       +      +
    314B  LEU      3.4     7.4    +      -       -      +
    315B  THR      3.6     7.6    -      -       -      +
    316B  ALA      3.4     0.2    -      -       -      -
    317B  LYS*     1.3    78.3    -      -       -      +
    319B  LEU*     1.3    55.6    +      -       -      +
    321B  GLU*     3.2    17.5    -      -       -      +
    322B  GLU*     2.9    42.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 319 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133B  ASN*     3.6    19.1    -      -       +      -
    134B  THR*     4.9     4.9    +      -       -      +
    184B  GLY      3.8     3.8    -      -       -      +
    185B  ASN*     3.7    36.1    -      -       +      +
    283B  LEU*     4.1    16.3    -      -       +      +
    284B  LEU      3.3    28.0    -      -       -      +
    285B  TYR*     3.5    31.4    -      -       +      -
    315B  THR      3.1    12.6    +      -       -      +
    316B  ALA      3.6     5.2    -      -       -      +
    317B  LYS      3.3     0.2    -      -       -      -
    318B  GLU*     1.3    78.7    -      -       -      +
    320B  ALA*     1.4    61.0    +      -       -      +
    322B  GLU*     4.0    10.8    -      -       -      +
    323B  LYS*     3.1    22.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 320 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    280B  PRO*     5.8     5.2    -      -       +      -
    283B  LEU*     4.6    11.9    -      -       +      +
    316B  ALA      2.8    12.0    +      -       -      +
    317B  LYS*     2.7    19.8    +      -       -      +
    319B  LEU*     1.4    71.8    -      -       -      +
    321B  GLU*     1.3    54.6    +      -       +      +
    323B  LYS*     3.1    10.1    -      -       -      +
    324B  GLU*     2.9    37.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 321 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    317B  LYS*     3.3    43.4    +      -       +      +
    318B  GLU*     3.2    19.7    -      -       +      +
    320B  ALA*     1.3    72.8    -      -       +      +
    322B  GLU*     1.3    65.6    +      -       +      +
    324B  GLU*     3.1    21.5    +      -       -      +
    325B  THR*     2.9    26.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 322 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98B  LYS*     3.2    33.9    +      -       -      +
    101B  LEU*     3.6    22.0    -      -       +      +
    131B  PRO*     4.1    10.1    -      -       -      +
    134B  THR*     2.5    36.8    +      -       -      +
    185B  ASN*     3.4    29.0    +      -       -      +
    318B  GLU*     2.9    22.1    +      -       +      +
    319B  LEU*     4.1     6.7    -      -       -      +
    321B  GLU*     1.3    76.1    -      -       +      +
    323B  LYS*     1.3    57.0    +      -       -      +
    325B  THR*     4.5     4.3    -      -       -      -
    326B  ALA*     2.8    34.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 323 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134B  THR*     4.6     4.6    -      -       -      +
    137B  LEU*     3.5    15.9    -      -       +      -
    141B  LYS*     4.4     0.4    -      -       -      +
    281B  ASP      4.3     3.2    +      -       -      -
    282B  ASP*     2.8    52.9    +      -       -      +
    283B  LEU*     4.0    11.7    -      -       +      +
    319B  LEU      3.1    14.6    +      -       -      +
    320B  ALA*     3.1    11.4    -      -       -      +
    322B  GLU*     1.3    73.0    -      -       -      +
    324B  GLU*     1.3    70.5    +      -       -      +
    326B  ALA*     4.7     2.7    -      -       -      -
    327B  PHE*     3.1    62.1    +      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 324 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    320B  ALA*     2.9    25.0    +      -       -      +
    321B  GLU*     3.1    22.4    +      -       -      +
    323B  LYS*     1.3    81.2    -      -       +      +
    325B  THR*     1.3    64.2    +      -       -      +
    327B  PHE*     3.1    10.8    +      -       -      +
    328B  GLU*     3.2    17.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 325 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101B  LEU*     3.7    23.1    -      -       +      -
    102B  LYS*     4.1    25.0    -      -       +      +
    321B  GLU      2.9    15.6    +      -       -      -
    322B  GLU*     3.9     4.0    -      -       -      -
    324B  GLU*     1.3    77.5    -      -       -      +
    326B  ALA*     1.3    62.9    +      -       -      +
    328B  GLU*     4.0     7.0    +      -       -      +
    329B  PHE*     3.6    19.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 326 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101B  LEU*     3.1    27.6    -      -       +      -
    102B  LYS*     6.0     0.2    -      -       -      +
    105B  VAL*     4.0    16.6    -      -       +      +
    134B  THR*     3.7    16.8    -      -       +      -
    138B  THR*     4.7     0.2    -      -       -      +
    322B  GLU      2.8    17.2    +      -       -      +
    323B  LYS      4.0     2.0    -      -       -      +
    325B  THR*     1.3    73.9    -      -       -      +
    327B  PHE*     1.3    66.9    +      -       +      +
    329B  PHE*     3.5     5.3    -      -       -      +
    330B  LEU*     3.2    30.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 327 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134B  THR*     5.4     0.7    -      -       +      -
    137B  LEU*     3.2    28.0    -      -       +      -
    138B  THR*     4.3    20.9    -      -       +      -
    141B  LYS*     3.3    27.6    -      -       +      -
    323B  LYS*     3.1    50.9    +      -       +      +
    324B  GLU*     3.9     2.7    -      -       -      +
    326B  ALA*     1.3    81.2    -      -       +      +
    328B  GLU*     1.3    54.4    +      -       -      +
    330B  LEU*     4.0    10.4    -      -       +      +
    331B  SER*     2.5    39.0    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 328 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324B  GLU      3.2    14.9    +      -       -      +
    325B  THR*     4.4     7.4    -      -       -      +
    327B  PHE*     1.3    74.4    -      -       -      +
    329B  PHE*     1.3    58.5    +      -       -      +
    331B  SER*     3.1     6.0    +      -       -      +
    332B  SER*     2.7    45.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 329 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102B  LYS*     3.5    44.2    -      -       +      -
    105B  VAL*     4.6     4.0    -      -       +      -
    106B  LYS*     4.8    12.1    -      -       +      -
    325B  THR      3.6    12.1    +      -       -      +
    326B  ALA*     3.5     9.6    +      -       -      +
    328B  GLU*     1.3    76.0    -      -       -      +
    330B  LEU*     1.3    76.8    +      -       +      +
    332B  SER*     2.7    34.8    +      -       -      -
    333B  ALA      3.3     4.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 330 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105B  VAL*     3.3    37.5    -      -       +      -
    106B  LYS*     4.0    26.1    +      -       +      +
    109B  LYS*     4.2    35.8    -      -       +      -
    138B  THR*     3.4    28.0    -      -       +      +
    326B  ALA      3.2    11.2    +      -       -      +
    327B  PHE*     4.2    10.5    -      -       +      +
    329B  PHE*     1.3    92.0    -      -       +      +
    331B  SER*     1.3    57.6    +      -       -      +
    333B  ALA*     4.1     8.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 331 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    327B  PHE      2.5    24.7    +      -       -      -
    328B  GLU*     3.1     9.0    +      -       -      -
    330B  LEU*     1.3    73.8    -      -       -      +
    332B  SER*     1.3    71.7    +      -       -      +
    333B  ALA*     3.3     5.3    +      -       -      +
----------------------------------------------------------
 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