Contacts of the helix formed by residues 60 - 83 (chain D) in PDB entry 3IT8


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 PRO 60 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5D  TYR*     3.7    28.0    -      -       +      +
      7D  TYR*     5.3     2.5    -      -       -      +
     53D  ILE*     5.1     4.7    -      -       -      +
     58D  HIS      3.6     7.7    -      -       -      +
     59D  THR*     1.3    98.3    -      -       +      +
     61D  GLY*     1.3    63.6    +      -       -      +
     63D  ASP*     4.6     0.5    +      -       -      -
     64D  TYR*     3.4    32.2    +      -       +      +
     65D  ASN*     3.8    15.5    -      -       -      +
    154D  TYR      6.0     1.1    -      -       -      +
    158D  PHE*     4.1    16.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 61 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59D  THR      3.5     2.3    +      -       -      -
     60D  PRO*     1.3    73.0    -      -       -      +
     62D  ASN*     1.3    77.8    +      -       -      +
     63D  ASP      3.2     1.6    -      -       -      -
     65D  ASN*     2.9    23.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 62 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61D  GLY*     1.3    74.1    -      -       -      +
     63D  ASP*     1.3    79.1    +      -       -      +
     65D  ASN*     2.9    26.5    +      -       -      +
     66D  PHE*     3.4     5.9    +      -       -      +
     67D  ASN*     5.0     6.1    +      -       -      +
    154D  TYR*     5.0     4.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 63 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33D  ILE*     3.6    17.0    -      -       +      +
     42D  GLY      5.2     7.8    -      -       -      +
     43D  ASN*     6.3     0.7    -      -       -      -
     44D  VAL*     3.6    24.0    -      -       -      +
     47D  ARG*     4.9     6.6    +      -       -      +
     60D  PRO      4.6     0.4    +      -       -      -
     61D  GLY      3.2     0.8    -      -       -      -
     62D  ASN*     1.3    81.6    -      -       -      +
     64D  TYR*     1.3    77.5    +      -       -      +
     66D  PHE*     3.0    20.6    +      -       +      +
     67D  ASN*     5.9     0.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 64 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5D  TYR*     3.7    16.2    -      +       -      -
      7D  TYR*     2.7    36.5    +      -       +      +
     21D  PHE*     3.2    33.9    -      +       +      -
     23D  ASP*     2.9    30.3    +      -       -      -
     31D  THR*     3.0    34.5    +      -       +      -
     33D  ILE*     3.8     5.6    -      -       +      -
     47D  ARG*     3.5    11.4    +      -       -      -
     51D  PHE*     4.1     4.9    -      -       -      -
     53D  ILE*     4.0    12.9    -      -       +      +
     59D  THR*     3.4    27.6    -      -       +      +
     60D  PRO*     3.4    17.7    +      -       +      -
     61D  GLY      3.2     6.5    +      -       -      -
     62D  ASN      3.2     0.6    -      -       -      -
     63D  ASP*     1.3    81.3    -      -       -      +
     65D  ASN*     1.3    73.5    +      -       -      +
     66D  PHE      3.0     0.7    +      -       -      -
    170D  TYR*     4.0     0.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 65 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60D  PRO*     3.8    18.0    -      -       -      +
     61D  GLY      2.9    21.9    +      -       -      +
     62D  ASN*     2.9    27.2    +      -       -      +
     64D  TYR*     1.3    75.8    -      -       -      +
     66D  PHE*     1.3    63.4    -      -       -      +
     67D  ASN      3.5     2.5    -      -       -      -
     68D  PHE*     3.3    13.9    +      -       +      +
     69D  TRP*     3.1    35.2    +      -       +      +
    154D  TYR*     3.5    45.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 66 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7D  TYR*     4.5    14.1    -      +       +      -
     19D  GLY*     3.9    12.8    -      -       -      -
     20D  VAL      3.9    12.1    -      -       -      -
     21D  PHE*     3.7    28.3    -      -       +      -
     33D  ILE*     3.6    20.0    -      -       +      -
     34D  SER      4.1     1.6    -      -       -      -
     35D  TYR*     3.8    28.5    -      +       +      -
     42D  GLY*     3.7    31.6    -      -       -      -
     62D  ASN      3.4     3.3    +      -       -      +
     63D  ASP*     3.0    21.5    +      -       +      +
     64D  TYR*     3.0     3.5    -      -       +      -
     65D  ASN*     1.3    73.4    -      -       -      +
     67D  ASN*     1.3    67.8    +      -       -      +
     69D  TRP*     3.2     1.2    +      -       -      +
     70D  TYR*     2.7    51.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 67 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35D  TYR*     5.4     1.4    -      -       -      -
     40D  ARG      5.7     0.2    -      -       -      -
     41D  HIS*     3.6    19.3    +      -       -      +
     42D  GLY*     3.0    28.6    +      -       -      -
     62D  ASN*     5.0     6.8    +      -       -      +
     63D  ASP*     5.9     1.0    +      -       -      -
     65D  ASN      3.5     0.6    -      -       -      -
     66D  PHE*     1.3    81.0    -      -       -      +
     68D  PHE*     1.3    63.7    +      -       -      +
     70D  TYR*     3.9     5.0    -      -       -      +
     71D  SER*     3.1    26.7    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 68 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65D  ASN*     3.3    16.0    +      -       +      +
     66D  PHE      3.1     0.6    -      -       -      -
     67D  ASN*     1.3    79.9    -      -       -      +
     69D  TRP*     1.3    99.0    +      +       -      +
     71D  SER*     3.8     2.7    -      -       -      -
     72D  LEU*     3.0    48.1    +      -       +      +
    147D  LEU*     4.2    21.9    -      -       +      +
    150D  ASP*     3.5    37.5    -      -       +      -
    151D  VAL*     4.2     5.8    -      -       +      -
    154D  TYR*     3.7    28.3    -      +       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 69 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7D  TYR*     3.5    48.9    +      +       +      -
     64D  TYR      3.8     1.6    -      -       -      -
     65D  ASN*     3.1    32.2    +      -       +      +
     66D  PHE      3.9     0.4    -      -       -      +
     68D  PHE*     1.3    98.6    -      +       -      +
     70D  TYR*     1.3    68.2    +      -       -      +
     72D  LEU*     4.4    11.0    -      -       +      +
     73D  MET*     2.7    45.9    +      -       +      +
     93D  LEU*     3.7    30.3    -      -       +      -
    140D  MET*     4.2    16.8    -      -       -      -
    151D  VAL*     4.2    16.6    -      -       +      -
    154D  TYR*     3.7    27.2    -      -       +      +
    155D  LEU*     3.9    24.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 70 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7D  TYR*     5.6     0.4    -      -       -      -
      9D  VAL*     3.9    16.9    -      -       +      +
     17D  TYR*     2.6    37.7    +      -       +      +
     18D  ASP      4.0     3.1    -      -       -      -
     19D  GLY*     3.8    26.5    -      -       -      -
     35D  TYR*     3.5    57.4    -      +       +      -
     37D  HIS*     4.3     1.2    -      -       -      -
     66D  PHE*     2.7    37.6    +      +       +      +
     67D  ASN*     3.9     4.3    -      -       -      +
     69D  TRP*     1.3    72.5    -      -       -      +
     71D  SER*     1.3    64.8    +      -       -      +
     73D  MET*     3.7     1.7    -      -       -      +
     74D  LYS*     2.8    56.2    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 71 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67D  ASN      3.1    15.7    +      -       -      -
     68D  PHE*     3.8     3.6    -      -       -      -
     70D  TYR*     1.3    88.6    -      -       -      +
     72D  LEU*     1.3    58.0    +      -       -      +
     74D  LYS*     3.2     8.2    +      -       -      +
     75D  GLU*     3.0    27.3    +      -       -      +
    147D  LEU*     6.2     0.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 72 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68D  PHE*     3.0    48.8    +      -       +      +
     69D  TRP*     4.0     7.6    -      -       +      +
     71D  SER*     1.3    76.5    +      -       -      +
     73D  MET*     1.3    59.0    +      -       -      +
     75D  GLU*     3.5    16.6    +      -       -      +
     76D  THR*     2.9    28.9    +      -       -      -
    140D  MET*     3.6    31.0    -      -       +      +
    145D  ASN*     3.8    25.4    -      -       -      +
    147D  LEU*     4.3    20.2    -      -       +      -
    151D  VAL*     3.7    14.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 73 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7D  TYR*     3.7    36.8    -      -       -      +
      9D  VAL*     3.7    20.8    -      -       +      +
     69D  TRP*     2.7    42.3    +      -       +      +
     70D  TYR*     5.3     0.2    -      -       -      -
     72D  LEU*     1.3    70.5    -      -       -      +
     74D  LYS*     1.3    60.6    +      -       -      +
     76D  THR*     3.2     1.6    +      -       -      -
     77D  LEU*     2.8    31.4    +      -       -      +
     91D  LEU*     3.4    39.4    -      -       +      +
     92D  SER*     3.9     1.3    -      -       -      -
     93D  LEU*     3.8    17.0    -      -       -      +
    140D  MET*     3.2    30.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 74 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9D  VAL*     4.3     9.8    -      -       +      +
     17D  TYR*     3.9    34.3    -      -       +      +
     35D  TYR*     5.9     0.8    +      -       -      -
     70D  TYR*     2.8    46.9    +      -       +      +
     71D  SER*     3.4     7.9    -      -       -      +
     73D  MET*     1.3    78.6    -      -       -      +
     75D  GLU*     1.3    62.2    +      -       -      +
     77D  LEU*     3.2     4.0    +      -       -      +
     78D  GLU*     3.0    46.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 75 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71D  SER      3.0    13.3    +      -       -      +
     72D  LEU*     3.5    20.7    -      -       -      +
     74D  LYS*     1.3    76.1    -      -       -      +
     76D  THR*     1.3    61.0    +      -       -      +
     78D  GLU*     3.2    12.6    +      -       -      +
     79D  GLU*     3.1    39.1    +      -       +      +
    139D  GLY*     3.9     8.2    +      -       -      -
    145D  ASN*     3.2    25.4    +      -       -      +
    146D  THR*     6.0     1.4    -      -       -      +
    147D  LEU*     5.3     4.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 76 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72D  LEU      2.9    15.9    +      -       -      -
     73D  MET*     3.6     5.6    -      -       -      -
     75D  GLU*     1.3    77.4    -      -       -      +
     77D  LEU*     1.3    62.4    +      -       -      +
     79D  GLU*     3.4     2.9    +      -       -      +
     80D  ILE*     3.0    35.7    +      -       +      +
     91D  LEU*     3.5    21.3    -      -       +      -
    110D  VAL*     6.1     0.2    -      -       +      -
    138D  VAL*     4.2    16.4    -      -       +      +
    139D  GLY*     3.3     7.5    -      -       -      -
    140D  MET*     2.8    38.0    +      -       +      +
    141D  LEU*     4.5     7.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 77 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9D  VAL*     3.6    36.8    -      -       +      +
     11D  LEU*     4.5     1.3    -      -       +      +
     17D  TYR*     3.8    22.9    -      -       +      -
     73D  MET      2.8    20.1    +      -       -      +
     74D  LYS      3.2     4.5    +      -       -      +
     76D  THR*     1.3    73.1    -      -       -      +
     78D  GLU*     1.3    63.4    +      -       -      +
     80D  ILE*     3.3    10.1    +      -       +      +
     81D  ASN*     3.0    47.7    +      -       -      +
     88D  THR*     3.9    16.2    -      -       -      +
     89D  THR      4.1     7.4    -      -       -      +
     90D  SER*     4.1    21.8    -      -       -      +
     91D  LEU*     4.0    10.3    -      -       +      +
    112D  THR*     6.1     0.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 78 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17D  TYR*     3.4    30.1    -      -       +      +
     74D  LYS*     3.0    46.5    +      -       -      +
     75D  GLU*     3.5    11.2    -      -       -      +
     77D  LEU*     1.3    76.1    -      -       -      +
     79D  GLU*     1.3    68.6    +      -       +      +
     81D  ASN*     3.1    15.3    +      -       -      +
     82D  LYS*     3.4    17.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 79 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75D  GLU*     3.1    29.1    +      -       +      +
     76D  THR      3.8     1.8    -      -       -      +
     78D  GLU*     1.3    77.8    -      -       -      +
     80D  ILE*     1.3    62.7    +      -       -      +
     82D  LYS*     3.0    52.5    +      -       -      +
     83D  ASN*     4.2     2.3    +      -       -      +
    138D  VAL*     3.6    36.1    -      -       +      +
    139D  GLY      4.4     7.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 80 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76D  THR*     3.0    36.4    +      -       +      +
     77D  LEU*     3.5    10.8    -      -       +      +
     78D  GLU      3.3     0.2    -      -       -      -
     79D  GLU*     1.3    76.3    -      -       -      +
     81D  ASN*     1.3    66.1    -      -       -      +
     82D  LYS      3.4     0.9    +      -       -      -
     83D  ASN*     3.6     6.4    +      -       -      +
     86D  THR*     3.4    48.5    -      -       +      +
     87D  LYS      3.9     0.2    +      -       -      -
     88D  THR*     4.4     7.2    -      -       -      +
     91D  LEU*     4.1    15.5    -      -       +      -
    112D  THR*     4.7     2.9    -      -       -      +
    117D  LEU*     4.1    26.9    -      -       +      -
    136D  PRO*     4.0    13.5    -      -       +      -
    138D  VAL*     4.0    14.8    -      -       +      -
    141D  LEU*     4.9     1.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 81 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11D  LEU*     3.9    18.5    -      -       -      +
     17D  TYR*     4.5     6.0    +      -       -      +
     77D  LEU*     3.0    40.9    +      -       -      +
     78D  GLU*     3.1     6.9    +      -       -      +
     80D  ILE*     1.3    77.7    -      -       -      +
     82D  LYS*     1.3    63.3    +      -       -      +
     83D  ASN      3.4     5.3    -      -       -      +
     84D  ASP*     4.2     0.7    +      -       -      -
     87D  LYS*     3.0    32.7    -      -       +      +
     88D  THR*     2.6    39.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 82 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78D  GLU*     3.4    14.6    +      -       -      +
     79D  GLU*     3.0    38.8    +      -       -      +
     81D  ASN*     1.3    75.4    -      -       -      +
     83D  ASN*     1.3    60.5    +      -       -      +
     84D  ASP*     3.0    10.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 83 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79D  GLU      4.2     2.7    +      -       -      +
     80D  ILE      3.6     5.2    +      -       -      +
     81D  ASN      3.4     0.6    -      -       -      -
     82D  LYS*     1.3    75.2    -      -       -      +
     84D  ASP*     1.3    55.3    +      -       -      +
     85D  SER*     2.7    34.9    +      -       -      -
     86D  THR*     2.8    28.6    +      -       -      +
     87D  LYS      3.5     6.1    +      -       -      -
    327D  NAG      1.5    65.8    +      -       -      +
----------------------------------------------------------
 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