Contacts of the helix formed by residues 463 - 486 (chain B) in PDB entry 1MWT


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 463 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    406B  LYS*     3.4     0.9    -      -       -      -
    427B  ILE*     3.4     9.7    -      -       -      +
    445B  ARG*     2.8    49.5    +      -       -      -
    447B  GLU      3.8     8.9    -      -       -      +
    449B  VAL*     4.0     8.3    -      -       -      +
    453B  ILE*     4.5     4.3    -      -       -      -
    458B  ALA*     2.9    20.2    +      -       +      -
    461B  SER*     3.4     5.7    +      -       -      +
    462B  SER*     1.3    73.3    -      -       -      +
    464B  ASN*     1.3    67.2    +      -       -      +
    465B  ILE*     3.3     2.0    +      -       -      +
    466B  PHE*     3.3    33.5    +      -       +      -
    467B  PHE*     3.4    19.4    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 464 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    406B  LYS*     2.8    21.6    +      -       -      +
    443B  VAL*     4.2     2.9    -      -       +      -
    444B  THR      3.2    25.8    +      -       -      +
    445B  ARG*     4.1     9.5    -      -       -      +
    446B  TYR      4.8     0.2    -      -       -      +
    462B  SER      3.2     2.1    +      -       -      -
    463B  ASP*     1.3    72.9    -      -       -      +
    465B  ILE*     1.3    52.3    +      -       -      +
    467B  PHE*     3.3     1.4    +      -       -      +
    468B  ALA*     2.7    38.2    +      -       -      +
    519B  TYR*     3.2    34.2    -      -       +      -
    708B  PNM      2.7    51.0    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 465 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    427B  ILE*     3.8    26.0    -      -       +      -
    429B  GLY      5.2     0.7    -      -       -      +
    430B  LYS      3.5    18.6    -      -       -      +
    431B  GLY      3.8     4.3    -      -       -      +
    432B  TRP*     3.6    40.8    -      -       +      -
    443B  VAL*     3.1    31.6    -      -       +      +
    445B  ARG*     3.8    23.1    -      -       +      +
    463B  ASP*     3.3     7.5    +      -       -      +
    464B  ASN*     1.3    75.5    -      -       -      +
    466B  PHE*     1.3    65.3    +      -       -      +
    468B  ALA*     3.6     6.4    -      -       -      +
    469B  ARG*     3.0    30.8    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 466 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    419B  LEU*     3.9    17.0    -      -       +      -
    423B  THR*     4.8     1.3    -      -       +      -
    424B  SER*     4.7     2.5    -      -       -      -
    425B  TYR*     3.9    22.9    -      +       -      -
    427B  ILE*     3.8     9.8    -      -       +      +
    453B  ILE*     3.1    33.7    -      -       +      -
    454B  ASP*     3.4    11.4    -      -       -      -
    455B  LEU*     3.5    35.9    -      -       +      -
    458B  ALA*     3.3    29.4    -      -       +      -
    463B  ASP*     3.3    17.4    +      -       +      +
    464B  ASN      3.3     0.2    -      -       -      -
    465B  ILE*     1.3    80.7    -      -       -      +
    467B  PHE*     1.3    67.9    +      +       -      +
    469B  ARG*     3.2     6.9    +      -       -      +
    470B  VAL*     3.0    43.0    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 467 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    406B  LYS*     3.4    57.2    -      -       +      -
    409B  THR*     4.0    13.8    -      -       +      +
    410B  ALA*     4.2     6.7    -      -       +      -
    419B  LEU*     5.4     0.2    -      -       +      -
    455B  LEU*     3.6    32.5    -      -       +      -
    458B  ALA*     3.5    28.5    -      -       +      -
    459B  ILE*     4.0    13.7    -      -       +      -
    463B  ASP      3.4    13.5    -      -       -      -
    464B  ASN      3.3     4.5    +      -       -      +
    466B  PHE*     1.3    83.9    -      +       -      +
    468B  ALA*     1.3    68.3    +      -       -      +
    469B  ARG      2.9     1.8    -      -       -      -
    470B  VAL*     2.9     8.1    +      -       +      +
    471B  ALA*     2.9    24.9    +      -       -      +
    518B  GLY*     3.8    19.5    -      -       -      +
    519B  TYR*     4.6     1.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 468 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    432B  TRP*     5.6     2.5    -      -       +      -
    443B  VAL*     3.7    27.8    -      -       +      -
    464B  ASN      2.7    22.8    +      -       -      +
    465B  ILE*     3.2     5.4    +      -       -      +
    467B  PHE*     1.3    74.6    -      -       -      +
    469B  ARG*     1.3    60.7    +      -       +      +
    471B  ALA*     3.6     4.3    -      -       -      +
    472B  LEU*     3.2    26.5    +      -       -      +
    515B  ALA*     3.2    32.7    -      -       +      +
    519B  TYR*     3.8     2.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 469 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    425B  TYR*     3.4    50.1    +      -       +      +
    426B  LYS      4.1    17.0    +      -       -      +
    427B  ILE*     5.4     0.4    -      -       -      +
    432B  TRP*     3.4    59.6    -      -       +      +
    465B  ILE*     3.0    23.8    +      -       +      +
    466B  PHE      3.4     8.1    -      -       -      +
    467B  PHE      2.9     0.6    -      -       -      -
    468B  ALA*     1.3    77.7    -      -       -      +
    470B  VAL*     1.3    60.1    +      -       -      +
    471B  ALA      2.9     2.0    -      -       -      -
    472B  LEU*     3.0     7.6    +      -       +      +
    473B  GLU*     2.8    29.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 470 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409B  THR*     4.1    20.0    -      -       +      +
    413B  GLY*     4.5     4.3    -      -       -      -
    418B  THR*     5.2     3.1    -      -       -      +
    419B  LEU*     4.1    33.0    -      -       +      -
    425B  TYR*     4.1    14.6    +      -       +      +
    466B  PHE*     3.0    47.0    +      -       +      +
    467B  PHE*     2.9    12.6    +      -       +      +
    469B  ARG*     1.3    76.0    -      -       -      +
    471B  ALA*     1.3    60.8    +      -       -      +
    473B  GLU*     3.6     3.6    +      -       +      +
    474B  LEU*     3.3    33.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 471 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409B  THR*     4.7     1.3    -      -       +      +
    467B  PHE      2.9    13.7    +      -       -      +
    468B  ALA      3.6     5.6    -      -       -      +
    470B  VAL*     1.3    77.4    -      -       -      +
    472B  LEU*     1.3    60.6    +      -       -      +
    474B  LEU*     3.3    11.3    +      -       -      +
    475B  GLY      2.9    23.6    +      -       -      +
    479B  PHE*     4.5     8.0    -      -       +      +
    514B  LEU*     3.4    43.5    -      -       +      +
    518B  GLY*     3.8    13.9    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 472 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    432B  TRP*     3.9    33.4    -      -       +      -
    434B  LYS*     5.0     7.9    -      -       +      -
    438B  TRP*     4.1    14.6    -      -       +      -
    468B  ALA      3.2    15.9    -      -       -      +
    469B  ARG*     3.0    10.6    +      -       +      +
    471B  ALA*     1.3    73.1    -      -       -      +
    473B  GLU*     1.3    66.8    +      -       -      +
    475B  GLY*     3.4     9.7    +      -       -      -
    511B  GLU*     3.7    41.5    -      -       +      +
    514B  LEU*     4.1    15.7    -      -       +      -
    515B  ALA*     4.2     5.4    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 473 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418B  THR*     4.0    31.1    -      -       +      +
    425B  TYR*     3.9    23.8    +      -       +      +
    469B  ARG      2.8    15.0    +      -       -      +
    470B  VAL*     3.6     7.6    -      -       +      +
    471B  ALA      3.2     0.2    -      -       -      -
    472B  LEU*     1.3    78.8    -      -       -      +
    474B  LEU*     1.3    62.3    +      -       -      +
    475B  GLY*     3.4     0.5    +      -       -      -
    478B  LYS*     5.3     2.8    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 474 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409B  THR*     4.4     2.5    -      -       +      +
    412B  ILE*     3.9    19.5    -      -       +      +
    413B  GLY*     3.9    18.6    -      -       -      +
    416B  ASN*     3.4    35.7    -      -       +      +
    418B  THR*     3.2    26.7    -      -       +      +
    470B  VAL*     3.3    21.9    +      -       +      +
    471B  ALA*     3.5     7.2    -      -       -      +
    473B  GLU*     1.3    80.3    -      -       -      +
    475B  GLY*     1.3    68.0    +      -       -      +
    477B  LYS*     4.9     0.5    +      -       -      +
    478B  LYS*     3.3    37.2    +      -       +      +
    479B  PHE*     4.4    15.5    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 475 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    471B  ALA      2.9    12.0    +      -       -      -
    472B  LEU      3.4     6.9    +      -       -      -
    473B  GLU      3.3     3.5    -      -       -      -
    474B  LEU*     1.3    82.6    -      -       -      +
    476B  SER*     1.3    65.9    +      -       -      -
    477B  LYS*     3.2     2.4    +      -       -      -
    479B  PHE*     3.1    19.2    +      -       -      +
    514B  LEU*     3.7    11.4    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 476 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    475B  GLY*     1.3    72.4    -      -       -      -
    477B  LYS*     1.3    65.5    +      -       -      +
    479B  PHE*     4.1     2.4    -      -       -      +
    480B  GLU*     3.2    27.7    +      -       -      +
    508B  LEU*     2.9    39.1    +      -       -      +
    509B  ASP*     4.1    10.8    +      -       -      -
    514B  LEU*     3.5    20.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 477 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    474B  LEU      5.5     0.2    -      -       -      +
    475B  GLY      3.2     1.4    -      -       -      -
    476B  SER*     1.3    85.3    +      -       -      +
    478B  LYS*     1.3    77.1    +      -       +      +
    480B  GLU*     4.2     2.2    -      -       -      +
    481B  LYS*     3.4    41.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 478 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    412B  ILE*     3.9     5.7    -      -       -      +
    416B  ASN*     3.5    36.9    +      -       +      +
    418B  THR*     5.1     8.1    -      -       +      -
    473B  GLU      5.3     2.7    -      -       -      -
    474B  LEU*     3.3    32.7    +      -       +      +
    475B  GLY      3.4     1.2    +      -       -      -
    477B  LYS*     1.3    89.5    -      -       +      +
    479B  PHE*     1.3    60.4    +      -       -      +
    481B  LYS*     4.0     8.8    -      -       -      +
    482B  GLY*     2.8    27.7    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 479 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405B  GLN*     3.9    20.6    -      -       -      -
    409B  THR*     3.9    25.8    -      -       +      -
    412B  ILE*     4.0    17.0    -      -       +      +
    471B  ALA*     4.5     9.2    -      -       +      -
    474B  LEU*     4.4    19.4    -      -       +      +
    475B  GLY      3.1    19.5    +      -       -      +
    476B  SER*     4.1     3.8    -      -       -      +
    477B  LYS      3.4     0.2    -      -       -      -
    478B  LYS*     1.3    75.4    -      -       -      +
    480B  GLU*     1.3    60.5    +      -       -      +
    482B  GLY*     3.2     1.0    +      -       -      -
    483B  MET*     3.0    51.7    +      -       +      +
    503B  ILE*     5.9     1.6    -      -       +      -
    508B  LEU*     3.6    21.8    -      -       +      -
    514B  LEU*     4.1    18.8    -      -       +      -
    517B  SER*     4.0    29.6    -      -       -      -
    518B  GLY*     4.6     0.4    -      -       -      -
    524B  ILE*     5.8     2.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 480 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    476B  SER      3.2    14.2    +      -       -      +
    477B  LYS*     4.2     2.7    -      -       -      +
    479B  PHE*     1.3    74.9    -      -       -      +
    481B  LYS*     1.3    68.0    +      -       -      +
    483B  MET*     3.3     7.2    +      -       -      +
    484B  LYS*     3.1    38.5    +      -       -      +
    503B  ILE*     4.9    16.6    -      -       +      +
    508B  LEU*     3.8    32.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 481 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    477B  LYS*     3.4    36.4    +      -       -      +
    478B  LYS*     4.0     7.9    -      -       -      +
    479B  PHE      3.4     0.4    -      -       -      -
    480B  GLU*     1.3    79.1    -      -       -      +
    482B  GLY*     1.3    57.9    +      -       -      +
    484B  LYS*     3.3    12.5    +      -       +      +
    485B  LYS*     2.8    37.8    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 482 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    412B  ILE*     3.5    24.0    -      -       -      +
    415B  ASN*     6.0     0.9    -      -       -      -
    416B  ASN*     5.4     1.6    -      -       -      -
    478B  LYS      2.8    19.4    +      -       -      -
    479B  PHE      3.6     1.6    -      -       -      -
    480B  GLU      3.2     0.2    -      -       -      -
    481B  LYS*     1.3    75.5    -      -       -      +
    483B  MET*     1.3    63.8    +      -       -      +
    485B  LYS*     3.3    12.0    +      -       -      +
    486B  LEU*     3.2    26.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 483 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405B  GLN*     3.1    42.6    -      -       -      +
    408B  LEU*     3.9    17.0    -      -       +      -
    412B  ILE*     3.5    15.7    -      -       +      -
    479B  PHE*     3.0    36.3    +      -       +      +
    480B  GLU*     3.3     6.5    +      -       -      +
    482B  GLY*     1.3    74.6    -      -       -      +
    484B  LYS*     1.3    58.4    +      -       -      +
    486B  LEU*     2.9    22.0    +      -       -      +
    488B  VAL*     3.2    41.5    +      -       +      +
    503B  ILE*     4.8    10.1    -      -       +      -
    508B  LEU*     6.1     0.2    -      -       +      -
    524B  ILE*     3.6    22.7    -      -       +      -
    526B  ILE*     4.5     0.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 484 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    480B  GLU*     3.1    28.5    +      -       -      +
    481B  LYS*     3.7    11.6    -      -       +      +
    483B  MET*     1.3    79.2    -      -       -      +
    485B  LYS*     1.3    57.9    +      -       -      +
    487B  GLY*     2.9    16.6    +      -       -      -
    488B  VAL      3.5    16.5    +      -       -      +
    489B  GLY*     6.2     0.7    -      -       -      -
    490B  GLU*     3.4    24.8    -      -       +      +
    559B  LYS*     4.2     0.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 485 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    415B  ASN*     3.3    39.9    +      -       -      +
    481B  LYS*     2.8    25.3    +      -       +      +
    482B  GLY*     3.4    11.9    -      -       -      +
    483B  MET      3.2     0.2    -      -       -      -
    484B  LYS*     1.3    78.2    -      -       -      +
    486B  LEU*     1.3    61.7    +      -       +      +
    487B  GLY      3.3     0.9    +      -       -      -
    559B  LYS*     3.9    18.0    +      -       -      +
    560B  LYS      5.2     1.4    +      -       -      -
    561B  ASN      3.7    19.2    +      -       -      -
    562B  ILE*     4.3    18.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 486 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408B  LEU*     3.8    38.4    -      -       +      +
    411B  MET*     4.1    13.0    -      -       +      -
    412B  ILE*     4.0    24.7    -      -       +      +
    482B  GLY      3.2    11.0    +      -       -      +
    483B  MET*     2.9    11.5    +      -       -      +
    485B  LYS*     1.3    81.0    -      -       +      +
    487B  GLY*     1.3    58.2    +      -       -      +
    488B  VAL*     3.4     1.2    +      -       +      -
    530B  GLN*     4.9     0.9    +      -       -      -
    534B  ILE*     3.7    27.2    -      -       +      +
    544B  ILE*     3.8     9.5    -      -       -      +
    558B  TRP*     5.5     1.7    -      -       -      -
    559B  LYS*     4.3     5.5    -      -       -      +
    562B  ILE*     3.5    46.4    -      -       +      +
----------------------------------------------------------
 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