Contacts of the helix formed by residues 554 - 577 (chain B) in PDB entry 5OC9


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 VAL 554 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398B  ASN*     3.3    44.5    +      -       +      +
    401B  ILE*     3.6    34.7    -      -       +      +
    402B  LEU*     4.3    24.9    -      -       +      +
    405B  LEU*     5.8     2.2    -      -       +      -
    552B  ILE      3.7     1.0    +      -       -      -
    553B  GLY*     1.3    68.3    -      -       -      -
    555B  TRP*     1.3    64.0    +      -       -      +
    556B  GLN      3.2     1.6    -      -       -      -
    557B  LEU*     3.2    20.0    +      -       +      +
    558B  ALA*     3.2    18.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 555 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    401B  ILE*     3.8    28.4    -      -       +      +
    405B  LEU*     3.6    36.8    -      -       +      -
    494B  THR*     5.2     1.0    +      -       -      -
    495B  PHE*     3.5    35.8    -      +       -      +
    498B  TYR*     3.5    43.2    -      +       +      -
    499B  LEU*     3.7    17.7    -      -       -      -
    502B  PHE*     3.7    17.7    -      +       +      -
    552B  ILE*     3.3    36.8    -      -       +      +
    553B  GLY      3.1     0.4    -      -       -      -
    554B  VAL*     1.3    75.5    -      -       -      +
    556B  GLN*     1.4    58.4    +      -       -      +
    558B  ALA*     3.4    11.6    -      -       +      +
    559B  PHE*     2.9    54.2    +      +       +      -
----------------------------------------------------------
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Residues in contact with GLN 556 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258B  LEU*     3.1    36.6    +      -       -      +
    261B  TRP*     3.2    27.6    +      -       -      -
    262B  LYS*     3.5    30.1    -      -       +      +
    552B  ILE*     3.5    16.7    -      -       +      +
    553B  GLY      3.5    12.6    +      -       -      +
    555B  TRP*     1.4    76.6    -      -       -      +
    557B  LEU*     1.4    55.6    +      -       -      +
    559B  PHE*     3.6     3.5    +      -       -      +
    560B  GLU*     3.0    55.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 557 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    607A  PHE*     5.0    12.6    -      -       +      -
    611A  PHE*     5.2    15.9    -      -       +      -
    402B  LEU*     4.3     5.8    -      -       +      -
    553B  GLY      4.7     0.4    +      -       -      -
    554B  VAL*     3.2    28.7    +      -       +      +
    556B  GLN*     1.4    74.7    -      -       -      +
    558B  ALA*     1.3    56.9    +      -       -      +
    560B  GLU*     3.4     1.8    +      -       -      +
    561B  THR*     2.8    42.0    +      -       -      +
    710B  79M      3.5    36.5    +      -       -      +
    712B  79M      3.8    32.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 558 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    402B  LEU*     6.3     0.2    -      -       +      -
    405B  LEU*     3.4    33.2    -      -       +      -
    502B  PHE*     3.3    20.8    -      -       +      -
    554B  VAL      3.2     9.4    +      -       -      +
    555B  TRP*     3.3    16.4    +      -       +      +
    557B  LEU*     1.3    78.3    -      -       -      +
    559B  PHE*     1.4    55.7    +      -       -      +
    561B  THR*     3.4     4.9    +      -       -      -
    562B  MET      3.1    21.5    +      -       -      -
    712B  79M      3.9    16.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 559 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214B  PHE*     3.6    36.3    -      +       -      -
    218B  PHE*     4.2     6.7    -      +       -      -
    258B  LEU*     3.4    30.7    -      -       +      +
    498B  TYR*     4.5     4.7    -      +       -      -
    501B  LEU*     3.8     5.4    -      -       +      -
    502B  PHE*     3.6    43.1    -      +       +      -
    505B  PHE*     3.2    49.0    -      +       +      -
    552B  ILE*     5.1     2.2    -      -       +      -
    555B  TRP*     2.9    43.7    +      +       +      +
    556B  GLN*     4.0     4.3    -      -       -      +
    558B  ALA*     1.4    73.3    -      -       -      +
    560B  GLU*     1.4    59.6    +      -       -      +
    562B  MET*     3.4     5.6    +      -       -      -
    563B  SER      3.1    21.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 560 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258B  LEU*     3.8    17.0    -      -       +      +
    259B  GLU*     3.5    10.4    -      -       -      +
    262B  LYS*     3.3    24.6    +      -       -      -
    556B  GLN*     3.0    42.3    +      -       -      +
    557B  LEU*     3.8     3.5    -      -       -      +
    558B  ALA      3.4     0.2    -      -       -      -
    559B  PHE*     1.4    71.5    -      -       -      +
    561B  THR*     1.3    59.3    +      -       -      +
    563B  SER*     2.7    21.9    +      -       -      -
    564B  VAL*     3.1    11.6    +      -       -      +
    610B  ALA*     5.4     0.3    -      -       -      +
    709B  79M      3.3    23.6    +      -       -      +
    710B  79M      2.9    38.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 561 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    557B  LEU*     2.8    24.5    +      -       -      +
    558B  ALA      3.6     5.4    -      -       -      -
    560B  GLU*     1.3    72.5    -      -       -      +
    562B  MET*     1.4    60.1    +      -       -      +
    564B  VAL*     3.1     3.8    +      -       -      +
    565B  ILE*     2.9    42.2    +      -       +      +
    710B  79M      3.8    35.8    +      -       +      -
    712B  79M      3.7    39.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 562 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409B  PHE*     3.7    27.8    -      -       +      -
    413B  PHE*     4.3     5.8    -      -       +      -
    502B  PHE*     3.5    34.5    -      -       +      +
    505B  PHE*     3.7    22.7    -      -       +      -
    506B  GLY*     3.7    26.9    -      -       -      -
    509B  SER*     3.9     4.0    +      -       -      +
    510B  LEU*     3.6    31.7    -      -       -      +
    558B  ALA      3.1    12.4    +      -       -      +
    559B  PHE      3.4    10.1    -      -       -      +
    561B  THR*     1.4    76.3    -      -       -      +
    563B  SER*     1.4    56.2    +      -       -      +
    565B  ILE*     3.4     7.9    +      -       -      +
    566B  SER*     3.0    27.2    +      -       -      -
    712B  79M      4.3     2.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 563 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254B  SER*     3.7    16.8    -      -       -      -
    258B  LEU*     4.0     8.0    -      -       -      +
    505B  PHE*     4.1     4.9    -      -       -      -
    509B  SER*     5.0     0.2    -      -       -      -
    559B  PHE      3.1    12.0    +      -       -      -
    560B  GLU*     2.7    23.4    +      -       -      -
    562B  MET*     1.4    73.0    -      -       -      +
    564B  VAL*     1.4    60.8    +      -       -      +
    566B  SER*     2.7    23.8    +      -       -      -
    567B  VAL*     3.6     2.1    -      -       -      +
    606B  LYS*     3.3    30.5    +      -       -      -
    709B  79M      3.5    19.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 564 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    560B  GLU      3.1    15.9    +      -       -      +
    561B  THR      3.1     8.4    +      -       -      +
    563B  SER*     1.4    76.1    -      -       -      +
    565B  ILE*     1.4    64.4    +      -       +      +
    566B  SER      3.2     0.2    -      -       -      -
    567B  VAL*     3.2    24.1    +      -       -      +
    568B  VAL*     3.9     6.4    +      -       -      +
    603B  LEU*     4.0     9.8    -      -       +      +
    606B  LYS*     4.7     2.2    -      -       +      -
    709B  79M      3.4    71.3    -      -       +      +
    710B  79M      3.7    28.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 565 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409B  PHE*     4.2    13.2    -      -       +      -
    417B  PHE*     3.8    23.8    -      -       +      -
    510B  LEU*     4.2     9.4    -      -       +      -
    561B  THR*     2.9    29.6    +      -       +      +
    562B  MET*     3.8     7.6    -      -       -      +
    564B  VAL*     1.4    77.5    -      -       +      +
    566B  SER*     1.4    54.0    +      -       -      +
    568B  VAL*     3.1    15.3    +      -       +      +
    569B  THR*     2.8    41.0    +      -       -      +
    709B  79M      4.5    18.4    -      -       +      -
    710B  79M      6.1     0.4    -      -       +      -
    712B  79M      3.8    28.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 566 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250B  ASN*     5.2     0.2    +      -       -      -
    251B  LEU*     3.6    11.0    -      -       -      +
    254B  SER*     4.2     6.4    +      -       -      -
    509B  SER*     3.4    33.7    -      -       -      -
    510B  LEU*     3.7     9.4    -      -       -      -
    562B  MET      3.0    14.8    +      -       -      -
    563B  SER*     2.7    26.2    +      -       -      -
    565B  ILE*     1.4    75.1    -      -       -      +
    567B  VAL*     1.4    55.9    +      -       -      +
    568B  VAL      3.4     0.2    -      -       -      -
    569B  THR*     3.9     4.3    -      -       -      -
    570B  ASN*     2.8    38.0    +      -       -      +
    606B  LYS*     4.7     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 567 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251B  LEU*     3.7    17.2    -      -       +      +
    563B  SER      3.6    13.5    -      -       -      +
    564B  VAL      3.5    14.4    -      -       -      +
    565B  ILE      3.2     0.6    -      -       -      -
    566B  SER*     1.4    72.9    -      -       -      +
    568B  VAL*     1.3    66.3    +      -       +      +
    570B  ASN*     4.3     0.7    -      -       -      +
    571B  CYS*     3.1    31.4    +      -       -      +
    599B  GLU*     3.8    27.4    -      -       +      +
    602B  LEU*     3.8    22.4    -      -       +      -
    603B  LEU*     3.9    16.8    -      -       +      -
    606B  LYS*     3.7    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 568 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    600A  HIS*     4.6     7.9    -      -       +      +
    564B  VAL      3.9    10.8    -      -       -      +
    565B  ILE*     3.4    13.2    -      -       +      +
    567B  VAL*     1.3    76.8    -      -       +      +
    569B  THR*     1.4    55.2    +      -       -      +
    571B  CYS*     3.9     1.7    -      -       -      +
    572B  ALA*     3.0    33.2    +      -       +      +
    599B  GLU*     3.4    29.2    -      -       +      +
    603B  LEU*     5.2     3.4    -      -       +      -
    709B  79M      4.2    28.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 569 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    417B  PHE*     4.2     5.9    -      -       +      -
    421B  PHE*     3.7    26.2    -      -       +      -
    510B  LEU*     3.5    42.1    -      -       +      +
    511B  PHE*     3.9    18.8    -      -       +      -
    565B  ILE*     2.8    22.7    +      -       -      +
    566B  SER      3.9     4.5    -      -       -      -
    568B  VAL*     1.4    75.8    -      -       -      +
    570B  ASN*     1.4    56.6    +      -       -      +
    572B  ALA*     3.2     3.9    +      -       -      +
    573B  LEU*     3.0    36.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 570 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247B  ALA*     3.8    19.9    -      -       +      +
    250B  ASN*     3.8    12.2    +      -       -      +
    251B  LEU*     4.0    16.8    -      -       +      +
    509B  SER      3.0    24.2    +      -       -      -
    510B  LEU      3.8    11.3    +      -       -      +
    513B  CYS*     3.5    26.5    +      -       -      +
    566B  SER      2.8    28.6    +      -       -      +
    567B  VAL      4.3     1.6    -      -       -      +
    569B  THR*     1.4    73.2    -      -       -      +
    571B  CYS*     1.4    62.0    +      -       -      +
    573B  LEU*     4.1     6.2    -      -       -      +
    574B  ILE*     3.2    32.2    +      -       -      +
    708B  79M      5.2     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 571 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251B  LEU*     5.4     0.7    -      -       -      -
    567B  VAL*     3.1    24.7    +      -       -      +
    568B  VAL      3.9     2.9    -      -       -      +
    569B  THR      3.3     0.2    -      -       -      -
    570B  ASN*     1.4    74.3    -      -       -      +
    572B  ALA*     1.3    59.4    +      -       -      +
    574B  ILE*     4.0     1.4    -      -       -      +
    575B  GLY      3.0    21.7    +      -       -      -
    595B  VAL*     3.4    26.9    -      -       +      +
    598B  VAL*     4.4     0.7    -      -       -      -
    599B  GLU*     3.8    28.5    -      -       +      -
    602B  LEU*     3.8    29.2    -      -       -      -
    708B  79M      4.0    23.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 572 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    421B  PHE*     3.6    22.4    -      -       +      -
    568B  VAL*     3.0    20.5    +      -       +      +
    569B  THR*     3.6     4.5    -      -       -      +
    571B  CYS*     1.3    74.5    -      -       -      +
    573B  LEU*     1.4    53.3    +      -       -      +
    575B  GLY*     3.2     2.4    +      -       -      -
    576B  MET*     2.8    42.7    +      -       +      +
    595B  VAL*     4.8     5.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 573 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    420B  ALA*     4.6     6.1    -      -       +      -
    421B  PHE*     3.8    20.2    -      -       +      -
    426B  MET*     3.9    25.0    -      -       +      +
    510B  LEU      3.9    12.3    -      -       -      +
    511B  PHE*     4.1     7.0    -      -       +      -
    513B  CYS*     5.1    13.5    -      -       +      -
    514B  VAL*     3.8    32.8    -      -       +      -
    569B  THR*     3.0    39.1    +      -       +      +
    570B  ASN*     4.1     5.6    -      -       -      +
    572B  ALA*     1.4    74.9    -      -       -      +
    574B  ILE*     1.4    61.5    +      -       -      +
    576B  MET*     3.6     7.3    +      -       -      +
    577B  SER*     3.3    19.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 574 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240B  TYR*     3.8    24.7    -      -       +      +
    243B  TYR*     4.0    28.0    -      -       +      +
    244B  VAL*     4.3     2.5    -      -       +      -
    247B  ALA*     3.7    29.2    -      -       +      -
    513B  CYS*     4.7     7.6    -      -       +      -
    570B  ASN      3.2    20.8    +      -       -      +
    571B  CYS      4.2     2.0    -      -       -      +
    573B  LEU*     1.4    73.6    -      -       +      +
    575B  GLY*     1.3    65.3    +      -       -      +
    577B  SER*     2.7    28.8    +      -       -      +
    580B  VAL*     3.2     9.5    -      -       +      +
    708B  79M      3.8    40.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 575 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    571B  CYS      3.0    16.5    +      -       -      -
    572B  ALA*     3.2     4.5    +      -       -      -
    574B  ILE*     1.3    76.0    -      -       -      +
    576B  MET*     1.3    56.3    +      -       -      +
    577B  SER      4.2     0.7    -      -       -      +
    580B  VAL*     4.3     9.2    -      -       -      +
    581B  ASN*     3.0    17.7    +      -       -      -
    591B  LEU*     3.9    17.5    -      -       -      +
    595B  VAL*     3.9    22.2    -      -       -      -
    708B  79M      4.8     0.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 576 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    420B  ALA      4.0     9.0    -      -       -      +
    421B  PHE*     3.6    54.3    -      -       +      +
    424B  LYS*     3.8    31.0    -      -       +      +
    426B  MET*     4.6    10.8    -      -       +      -
    572B  ALA*     2.8    20.6    +      -       +      +
    573B  LEU*     3.7     9.0    -      -       -      +
    574B  ILE      3.2     0.2    -      -       -      -
    575B  GLY*     1.3    74.3    -      -       -      +
    577B  SER*     1.4    65.2    +      -       -      +
    578B  PRO*     3.6     3.3    -      -       -      +
    581B  ASN*     3.0    11.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 577 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240B  TYR*     5.3     1.6    -      -       -      +
    243B  TYR*     5.8     9.4    -      -       -      -
    573B  LEU      3.3    10.2    +      -       -      -
    574B  ILE*     2.7    22.9    +      -       -      +
    576B  MET*     1.4    75.7    -      -       -      +
    578B  PRO*     1.4    74.1    -      -       -      +
    579B  GLN*     3.2     8.0    +      -       -      +
    580B  VAL*     3.2    17.5    +      -       -      +
    581B  ASN*     3.0    21.7    +      -       -      -
----------------------------------------------------------
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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