Contacts of the helix formed by residues 577 - 600 (chain A) in PDB entry 6DBV


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 ARG 577 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    542A  LEU*     5.7     1.2    -      -       -      +
    545A  VAL*     3.1    30.0    -      -       -      +
    546A  SER*     2.3    43.2    +      -       -      -
    547A  THR      5.1     0.2    -      -       -      -
    548A  SER*     2.5    29.6    +      -       -      -
    551A  VAL*     4.2    18.5    -      -       +      +
    552A  GLY      4.8     5.5    +      -       -      +
    554A  ILE*     4.6     4.9    -      -       +      +
    575A  ARG*     3.7     6.7    -      -       -      +
    576A  PHE*     1.3    75.4    -      -       -      +
    578A  TYR*     1.3    66.4    +      -       -      +
    579A  ASP*     3.1    27.7    +      -       -      +
    580A  VAL*     2.8    27.5    +      -       +      +
    581A  ALA      3.1     9.2    +      -       -      -
    700A  GLU*     3.9     7.2    -      -       -      +
    169B  THR*     5.0     0.9    +      -       -      +
    170B  GLN*     3.1    31.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 578 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    576A  PHE      3.6     2.6    +      -       -      -
    577A  ARG*     1.3    69.6    -      -       -      +
    579A  ASP*     1.3    58.3    +      -       -      +
    581A  ALA*     3.0     6.1    +      -       -      +
    582A  LEU*     2.9    47.7    +      -       +      +
    615A  VAL*     5.5     0.5    -      -       -      +
    617A  GLU*     3.5    26.2    +      -       -      +
    642A  PHE*     4.5     5.2    -      +       -      -
    644A  PHE*     4.2    11.8    -      +       -      +
    677A  LEU*     3.3    44.6    -      -       +      -
    697A  VAL*     4.2    18.2    -      -       +      -
    700A  GLU*     2.7    34.3    +      -       +      +
    701A  ARG*     4.7    10.1    -      -       +      +
    704A  MET*     5.1     6.1    -      -       +      -
    724A  PHE*     3.0    42.3    -      +       -      -
----------------------------------------------------------
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Residues in contact with ASP 579 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    536A  PHE*     3.6    24.0    -      -       -      -
    538A  TRP*     3.6    27.5    +      -       +      -
    542A  LEU*     4.5     5.5    -      -       +      +
    545A  VAL*     5.3     3.1    -      -       -      +
    577A  ARG*     3.2    38.9    +      -       -      +
    578A  TYR*     1.3    77.2    -      -       -      +
    580A  VAL*     1.3    76.0    +      -       -      +
    582A  LEU*     3.2     5.7    +      -       -      +
    583A  VAL*     2.9    35.1    +      -       -      +
    700A  GLU*     5.0     3.5    -      -       +      +
    704A  MET*     3.8    18.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 580 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    531A  PRO*     3.8     9.6    -      -       +      -
    532A  GLY*     3.1    38.8    -      -       -      +
    536A  PHE*     4.4    11.2    -      -       +      -
    549A  TRP*     3.9    17.0    -      -       -      +
    551A  VAL*     4.0     6.5    -      -       +      +
    552A  GLY*     5.3     0.7    -      -       -      -
    576A  PHE*     5.6     0.9    -      -       +      -
    577A  ARG*     2.8    27.7    +      -       +      +
    579A  ASP*     1.3    97.5    +      -       -      +
    581A  ALA*     1.3    57.4    +      -       -      +
    583A  VAL*     3.1    12.8    -      -       +      +
    584A  SER*     2.9    29.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 581 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    531A  PRO*     5.2     2.7    -      -       -      -
    576A  PHE*     4.1    23.0    -      -       +      +
    577A  ARG      3.1     8.6    +      -       -      +
    578A  TYR      3.0    10.7    +      -       -      +
    580A  VAL*     1.3    77.6    -      -       -      +
    582A  LEU*     1.3    63.8    +      -       -      +
    584A  SER*     3.2     7.7    +      -       -      -
    585A  ALA*     2.9    22.2    +      -       -      +
    644A  PHE*     4.2    10.5    -      -       +      -
    677A  LEU*     3.9    23.6    -      -       +      -
   1014A  TRP*     3.9     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 582 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    538A  TRP*     6.2     0.2    -      -       +      -
    578A  TYR*     2.9    45.9    +      -       +      +
    579A  ASP*     3.6     8.3    -      -       -      +
    581A  ALA*     1.3    75.4    -      -       -      +
    583A  VAL*     1.3    61.3    +      -       +      +
    585A  ALA*     3.1     7.2    +      -       +      +
    586A  LEU*     2.9    29.5    +      -       -      +
    615A  VAL*     5.0     6.7    -      -       +      -
    644A  PHE*     3.4    33.2    -      -       +      -
    646A  ILE*     5.2     2.8    -      -       +      +
    704A  MET*     4.1    14.4    -      -       -      -
    709A  LEU*     5.7     1.8    -      -       +      -
    722A  PHE*     4.0    34.5    -      -       +      -
    724A  PHE*     4.0    13.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 583 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    532A  GLY      6.1     0.4    -      -       -      +
    534A  HIS*     4.8    10.1    -      -       +      +
    536A  PHE*     3.9    30.3    -      -       +      -
    538A  TRP*     4.9     1.3    -      -       +      -
    579A  ASP      2.9    20.7    +      -       -      +
    580A  VAL*     3.1    24.9    -      -       +      +
    582A  LEU*     1.3    73.2    -      -       +      +
    584A  SER*     1.3    66.4    +      -       -      +
    586A  LEU*     4.4     5.2    -      -       -      +
    587A  LYS*     2.9    28.6    +      -       -      +
    709A  LEU*     3.8    19.5    -      -       +      -
    711A  ILE*     3.7    33.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 584 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    529A  LEU      3.4    16.5    +      -       -      -
    530A  LEU      3.8     4.4    +      -       -      -
    531A  PRO*     4.3    14.4    -      -       -      -
    532A  GLY      5.4     0.9    -      -       -      -
    534A  HIS*     4.9     9.8    +      -       -      -
    580A  VAL      2.9    18.3    +      -       -      -
    581A  ALA*     3.4     6.5    -      -       -      -
    583A  VAL*     1.3    79.7    -      -       -      +
    585A  ALA*     1.3    55.5    +      -       -      +
    587A  LYS*     3.8     2.9    -      -       -      +
    588A  ASP*     2.9    32.7    +      -       -      +
   1014A  TRP*     3.1    24.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 585 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    581A  ALA      2.9    13.2    +      -       -      +
    582A  LEU*     3.4    11.2    -      -       -      +
    584A  SER*     1.3    77.0    -      -       -      +
    586A  LEU*     1.3    56.6    +      -       -      +
    588A  ASP*     3.2     6.8    -      -       -      +
    589A  LEU*     3.0    32.4    +      -       -      +
    644A  PHE*     4.7     5.4    -      -       +      -
    646A  ILE*     3.5    17.3    -      -       +      -
    675A  ARG*     3.1    30.3    -      -       -      +
   1014A  TRP*     4.1     7.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 586 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    582A  LEU      2.9    14.5    +      -       -      +
    583A  VAL*     4.1     5.2    -      -       -      +
    585A  ALA*     1.3    73.4    -      -       -      +
    587A  LYS*     1.3    63.5    +      -       -      +
    588A  ASP      3.0     4.0    -      -       -      -
    589A  LEU*     3.0     9.2    +      -       +      +
    590A  GLU*     2.9    19.2    +      -       -      -
    593A  ILE*     5.2     7.2    -      -       +      +
    613A  VAL*     4.3    15.5    -      -       +      -
    646A  ILE*     4.5     6.5    -      -       +      +
    649A  ILE*     5.4     5.6    -      -       +      -
    709A  LEU*     5.4     4.0    -      -       +      -
    711A  ILE*     5.0    10.1    -      -       +      -
    713A  VAL*     4.7    13.9    -      -       +      -
    720A  PHE*     3.4    59.0    -      -       +      -
    722A  PHE*     4.4    15.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 587 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    534A  HIS*     2.6    73.1    +      -       +      +
    583A  VAL      2.9    22.6    +      -       -      +
    584A  SER      4.1     0.4    -      -       -      +
    586A  LEU*     1.3    75.4    -      -       -      +
    588A  ASP*     1.3    58.5    +      -       -      +
    590A  GLU*     3.2    28.8    -      -       +      +
    711A  ILE*     4.2    14.8    -      -       +      +
    712A  SER*     3.6    33.4    -      -       -      +
    713A  VAL*     5.7     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 588 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    529A  LEU*     4.1    12.1    -      -       -      +
    584A  SER*     2.9    21.9    +      -       -      +
    585A  ALA*     3.2     9.9    -      -       -      +
    587A  LYS*     1.3    75.8    -      -       -      +
    589A  LEU*     1.3    72.8    +      -       -      +
    590A  GLU*     3.0     8.9    +      -       -      +
    591A  GLU*     4.1     7.8    +      -       -      +
    592A  ASP*     5.5     0.3    -      -       -      +
    675A  ARG*     4.6     2.4    +      -       -      -
   1014A  TRP*     5.8     1.7    -      -       +      -
   1018A  SER*     2.4    35.3    +      -       -      -
   1019A  LYS*     3.6    12.1    +      -       -      +
   1020A  TYR*     3.9    18.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 589 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    585A  ALA      3.0    20.2    +      -       -      +
    586A  LEU*     3.0     6.5    +      -       +      +
    588A  ASP*     1.3    90.0    -      -       -      +
    590A  GLU*     1.3    65.0    +      -       -      +
    591A  GLU      3.1     1.6    -      -       -      -
    592A  ASP*     2.7    26.8    +      -       +      +
    593A  ILE*     2.9    23.3    +      -       +      -
    646A  ILE*     4.2    23.3    -      -       +      -
    649A  ILE*     5.9     0.7    -      -       +      -
    663A  PHE*     3.5    33.4    -      -       +      -
    675A  ARG*     3.9    11.4    -      -       -      +
   1019A  LYS*     3.6    27.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 590 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    586A  LEU      2.9     7.2    +      -       -      +
    587A  LYS*     3.2    28.0    -      -       +      +
    588A  ASP      3.0     1.4    -      -       -      +
    589A  LEU*     1.3    74.7    -      -       -      +
    591A  GLU*     1.3    67.0    +      -       -      +
    593A  ILE*     3.0    10.7    -      -       -      +
    594A  MET*     3.0    30.2    +      -       -      +
    712A  SER      5.3     0.4    -      -       -      +
    713A  VAL*     3.1    25.6    -      -       +      -
    714A  GLY*     2.3    38.2    +      -       -      -
    715A  GLY      4.3     1.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 591 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    588A  ASP      4.1     5.4    +      -       -      +
    589A  LEU      3.0     1.5    +      -       -      -
    590A  GLU*     1.3    84.4    +      -       -      +
    592A  ASP*     1.3    73.1    +      -       -      +
    594A  MET*     3.3     2.6    +      -       -      +
    595A  GLU*     2.9    34.0    +      -       +      +
   1020A  TYR*     6.5     2.0    -      -       +      -
   1023A  LYS*     5.7     4.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 592 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    589A  LEU*     2.7    24.6    +      -       +      +
    591A  GLU*     1.3    90.4    -      -       -      +
    593A  ILE*     1.3    55.7    +      -       +      +
    595A  GLU*     2.7    29.3    -      -       -      +
    596A  GLY*     2.9    12.0    +      -       -      -
    663A  PHE*     5.3    21.2    -      -       +      +
   1019A  LYS*     4.4    24.8    -      -       -      +
   1023A  LYS*     4.5    19.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 593 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    586A  LEU*     5.2     7.2    -      -       +      +
    589A  LEU*     2.9    25.8    +      -       +      +
    590A  GLU*     3.0    26.5    -      -       -      +
    592A  ASP*     1.3    78.4    -      -       +      +
    594A  MET*     1.3    78.3    +      -       +      +
    596A  GLY*     3.4     0.7    +      -       -      -
    597A  LEU*     2.9    30.1    +      -       +      +
    611A  PHE*     5.7     3.4    -      -       +      -
    649A  ILE*     3.6    38.8    -      -       +      -
    662A  ILE*     4.0    11.7    -      -       +      +
    663A  PHE*     5.1     5.8    -      -       +      -
    713A  VAL*     3.9    23.6    -      -       +      -
    718A  ARG*     4.4     8.5    -      -       -      +
    720A  PHE*     5.4     7.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 594 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    590A  GLU*     3.0    41.4    +      -       -      +
    591A  GLU*     3.8     3.6    -      -       -      +
    593A  ILE*     1.3    82.5    -      -       +      +
    595A  GLU*     1.3    59.1    +      -       -      +
    597A  LEU*     3.4     7.6    +      -       +      +
    598A  ARG*     2.9    42.5    +      -       +      +
    604A  ASP*     4.5    18.6    -      -       +      -
    714A  GLY*     3.8    11.9    -      -       -      +
    718A  ARG*     3.0    46.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 595 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    591A  GLU*     2.9    25.5    +      -       +      +
    592A  ASP*     2.7    27.2    -      -       -      +
    594A  MET*     1.3    76.5    -      -       -      +
    596A  GLY*     1.3    63.5    +      -       -      +
    598A  ARG*     3.3    12.6    +      -       -      +
    599A  GLU*     2.9    32.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 596 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    592A  ASP      2.9     8.1    +      -       -      -
    593A  ILE      3.8     1.1    -      -       -      -
    595A  GLU*     1.3    92.0    +      -       -      +
    597A  LEU*     1.3    54.6    +      -       -      +
    599A  GLU*     3.0    10.5    +      -       -      +
    600A  ARG*     2.7    35.9    +      -       -      +
    662A  ILE*     4.2    20.3    -      -       -      +
    663A  PHE*     6.2     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 597 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    593A  ILE*     2.9    18.3    +      -       +      +
    594A  MET*     3.6    10.1    -      -       +      +
    596A  GLY*     1.3    74.2    -      -       -      +
    598A  ARG*     1.3    63.4    +      -       -      +
    600A  ARG*     3.5     5.4    +      -       -      +
    601A  ALA      3.3    14.4    +      -       -      -
    602A  LEU*     3.4    24.8    +      -       +      +
    603A  ASP      3.1    27.8    -      -       -      +
    604A  ASP*     3.3    18.2    -      -       -      +
    607A  CYS      5.4     1.3    -      -       -      +
    608A  THR*     5.1     1.6    -      -       +      -
    611A  PHE*     4.2    17.9    -      -       +      -
    662A  ILE*     3.9    12.3    -      -       +      +
    718A  ARG*     3.2    37.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 598 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    594A  MET*     2.9    31.6    +      -       +      +
    595A  GLU*     3.5    11.4    -      -       -      +
    597A  LEU*     1.3    75.3    -      -       -      +
    599A  GLU*     1.3    61.8    +      -       -      +
    601A  ALA*     3.1    14.9    +      -       -      +
    602A  LEU      5.2     0.2    -      -       -      -
    604A  ASP*     4.0    27.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 599 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    595A  GLU*     2.9    22.8    +      -       +      +
    596A  GLY*     3.0    13.6    +      -       -      +
    598A  ARG*     1.3    74.9    -      -       -      +
    600A  ARG*     1.3    79.9    +      -       -      +
    601A  ALA*     3.0    12.4    +      -       -      +
    662A  ILE      5.7     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 600 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    596A  GLY      2.7    19.1    +      -       -      +
    597A  LEU*     4.0     6.3    -      -       -      +
    599A  GLU*     1.3    86.8    +      -       -      +
    601A  ALA*     1.3    62.6    +      -       -      +
    602A  LEU*     3.0    19.4    +      -       +      +
    651A  ILE*     6.4     0.2    -      -       +      -
    660A  ILE*     3.4    41.7    -      -       +      +
    661A  THR*     4.2    20.4    +      -       -      +
    662A  ILE*     5.6     6.1    +      -       +      -
----------------------------------------------------------
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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