Contacts of the helix formed by residues 609 - 632 (chain B) in PDB entry 6V3O


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 GLY 609 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    605B  GLY*     2.8    17.2    +      -       -      -
    608B  ALA*     1.3    82.4    -      -       -      +
    610B  ARG*     1.3    65.3    +      -       -      -
    611B  LEU      3.5     1.6    -      -       -      -
    612B  SER      4.4     0.2    -      -       -      -
    613B  ALA*     3.2    19.2    +      -       -      +
    724B  ALA*     5.5     2.2    -      -       -      -
    728B  TYR*     3.4    29.3    -      -       -      -
    792B  LEU      4.3     5.4    -      -       -      -
    793B  GLY*     6.1     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 610 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    601B  TYR*     4.0    18.6    +      -       -      +
    602B  SER*     4.5     5.3    -      -       -      +
    605B  GLY*     4.1    11.2    +      -       -      -
    609B  GLY*     1.3    70.9    -      -       -      -
    611B  LEU*     1.3    62.2    +      -       -      +
    613B  ALA*     3.0     4.6    +      -       +      +
    614B  ALA*     2.8    34.1    +      -       +      +
    642B  GLY*     2.6    35.4    +      -       -      -
    644B  THR*     4.6     8.5    -      -       -      +
    789B  PRO      4.4     6.7    +      -       -      +
    790B  VAL*     3.3    45.5    -      -       -      +
    792B  LEU      4.6     6.0    +      -       -      +
    794B  VAL*     5.5     2.5    -      -       +      -
    825B  THR*     5.5     3.7    +      -       -      +
    828B  LEU*     3.6    31.1    -      -       -      +
    829B  LEU*     4.3    10.5    -      -       +      -
    970B  GLY*     4.1    14.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 611 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    609B  GLY      3.5     0.8    -      -       -      -
    610B  ARG*     1.3    79.6    -      -       -      +
    612B  SER*     1.3    63.5    +      -       -      +
    614B  ALA*     3.3     8.5    +      -       +      +
    615B  TRP*     3.2    20.6    +      -       -      +
    717B  MET*     4.4    20.0    -      -       +      -
    720B  MET*     4.4    17.5    -      -       +      +
    721B  ALA*     5.7     0.7    -      -       -      -
    724B  ALA*     4.4    11.4    -      -       +      +
    792B  LEU      5.7     0.2    +      -       -      -
    793B  GLY      5.6     0.2    -      -       -      -
    794B  VAL*     3.9    27.6    -      -       +      +
    797B  ALA*     3.8    29.2    -      -       +      -
    798B  PHE*     4.7    14.1    -      -       +      -
    821B  PHE*     5.9     1.1    -      -       +      -
    822B  PHE*     5.2    10.1    -      -       +      -
    825B  THR*     5.5     5.6    -      -       -      +
    826B  LEU*     5.2    10.3    -      -       +      -
    829B  LEU*     6.0     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 612 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    568B  LEU*     4.2    11.8    -      -       -      +
    608B  ALA      3.6     9.3    +      -       -      -
    609B  GLY      3.9     1.6    +      -       -      -
    610B  ARG      3.3     0.2    -      -       -      -
    611B  LEU*     1.3    75.0    -      -       -      +
    613B  ALA*     1.3    67.1    +      -       -      +
    615B  TRP*     3.3     1.7    +      -       -      +
    616B  GLN*     2.9    26.3    +      -       -      +
    721B  ALA*     2.8    45.8    +      -       -      +
    724B  ALA*     3.6    10.3    -      -       -      +
    725B  THR*     2.9    18.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 613 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    568B  LEU*     4.0    12.5    -      -       +      +
    571B  LEU*     4.6     2.9    -      -       -      +
    601B  TYR*     4.7     3.4    -      -       -      +
    604B  SER*     3.6    17.2    -      -       -      +
    605B  GLY*     3.6    24.5    -      -       -      +
    609B  GLY      3.2    18.3    +      -       -      +
    610B  ARG*     3.0     5.7    +      -       +      +
    612B  SER*     1.3    78.4    -      -       -      +
    614B  ALA*     1.3    62.7    +      -       -      +
    616B  GLN*     4.0     0.9    -      -       -      +
    617B  LEU*     3.1    26.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 614 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    601B  TYR*     6.1     7.0    -      -       +      -
    610B  ARG*     2.8    24.8    +      -       +      +
    611B  LEU*     3.6     9.9    -      -       +      +
    612B  SER      3.2     0.2    -      -       -      -
    613B  ALA*     1.3    74.3    -      -       -      +
    615B  TRP*     1.3    60.7    +      -       -      +
    617B  LEU*     3.4     5.6    +      -       -      +
    618B  TYR      3.1    17.5    +      -       -      -
    821B  PHE*     3.7    14.9    -      -       +      -
    825B  THR*     4.2    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 615 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    611B  LEU      3.2    12.1    +      -       -      +
    612B  SER*     4.0     4.3    -      -       -      +
    614B  ALA*     1.3    73.6    -      -       -      +
    616B  GLN*     1.3    65.8    +      -       -      +
    618B  TYR*     3.4    23.2    +      +       +      -
    619B  ARG*     3.2    52.9    +      -       +      +
    714B  ARG*     4.0    42.0    -      -       +      -
    717B  MET*     3.4    53.1    -      -       +      +
    718B  ASP*     2.8    25.8    +      -       -      +
    721B  ALA*     4.3     9.0    -      -       +      -
    819B  TRP*     3.6    28.5    -      +       -      -
    821B  PHE*     4.0    16.7    -      +       -      -
----------------------------------------------------------
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Residues in contact with GLN 616 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    568B  LEU*     3.6    24.6    -      -       +      +
    571B  LEU*     3.7    38.4    +      -       +      -
    572B  GLN*     3.5    32.0    +      -       +      +
    612B  SER      2.9    17.9    +      -       -      +
    613B  ALA      4.1     0.9    -      -       -      +
    615B  TRP*     1.3    77.9    -      -       -      +
    617B  LEU*     1.3    57.5    +      -       -      +
    619B  ARG*     2.9    34.8    +      -       -      +
    620B  ALA*     3.0    26.1    +      -       -      +
    623B  GLU*     5.6     3.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 617 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    571B  LEU*     4.4    17.2    -      -       +      +
    599B  VAL*     3.5    35.7    -      -       +      -
    600B  GLY      3.9    18.8    -      -       -      +
    601B  TYR*     4.1    26.7    -      -       +      +
    613B  ALA      3.1    19.5    +      -       -      +
    614B  ALA*     3.7     6.7    -      -       -      +
    615B  TRP      3.2     0.2    -      -       -      -
    616B  GLN*     1.3    73.9    -      -       -      +
    618B  TYR*     1.3    66.4    +      -       -      +
    620B  ALA*     3.2     4.5    +      -       +      +
    621B  GLN*     2.9    68.2    +      -       +      +
    659B  GLN*     6.3     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 618 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    614B  ALA      3.1    14.3    +      -       -      +
    615B  TRP*     3.4    31.4    +      +       +      +
    617B  LEU*     1.3    77.1    -      -       -      +
    619B  ARG*     1.3    58.9    +      -       -      +
    621B  GLN*     3.4    11.6    +      -       -      +
    622B  GLU*     3.0    51.5    +      -       -      +
    658B  SER      4.2    10.8    -      -       -      -
    660B  PRO*     3.6    31.7    -      -       +      +
    661B  PRO*     3.8    18.4    -      -       -      +
    706B  PRO*     5.7     1.6    -      -       +      +
    707B  VAL      4.8     1.7    +      -       -      -
    709B  PRO*     3.6    33.9    -      -       +      +
    714B  ARG*     4.9     0.4    -      -       -      -
    819B  TRP*     4.5     5.6    +      +       -      -
    821B  PHE*     3.9    32.8    -      +       +      -
----------------------------------------------------------
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Residues in contact with ARG 619 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    615B  TRP*     3.2    61.9    +      -       +      +
    616B  GLN*     2.9    39.6    +      -       -      +
    617B  LEU      3.2     0.6    -      -       -      -
    618B  TYR*     1.3    75.6    -      -       -      +
    620B  ALA*     1.3    59.9    +      -       -      +
    622B  GLU*     3.1    20.2    +      -       -      +
    623B  GLU*     2.8    48.9    +      -       -      +
    714B  ARG*     4.4     6.5    -      -       -      +
    718B  ASP*     3.1    20.0    +      -       -      -
    721B  ALA*     5.8     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 620 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    571B  LEU*     3.7    40.2    -      -       +      +
    574B  ALA*     5.0     0.9    -      -       +      -
    575B  PRO*     4.2     8.9    -      -       -      +
    616B  GLN*     3.0    21.6    +      -       -      +
    617B  LEU*     3.6     4.0    -      -       +      +
    619B  ARG*     1.3    76.5    -      -       -      +
    621B  GLN*     1.3    56.5    +      -       -      +
    623B  GLU*     4.1     1.3    -      -       -      +
    624B  MET*     2.9    48.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 621 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    599B  VAL*     4.8     6.0    -      -       +      +
    617B  LEU*     2.9    43.1    +      -       +      +
    618B  TYR*     3.6     7.2    -      -       -      +
    620B  ALA*     1.3    76.1    -      -       -      +
    622B  GLU*     1.3    62.7    +      -       -      +
    624B  MET*     3.9    11.8    -      -       +      +
    625B  ALA*     3.0    26.0    +      -       -      +
    635B  LEU*     5.3     0.9    -      -       -      +
    637B  LEU*     4.6    14.0    -      -       +      +
    639B  HIS*     3.4    19.4    +      -       -      -
    659B  GLN*     3.0    23.5    +      -       -      +
    660B  PRO*     3.3    23.9    -      -       +      +
    663B  THR*     3.9    24.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 622 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    618B  TYR*     3.0    35.9    +      -       +      +
    619B  ARG*     3.1    17.9    +      -       -      +
    621B  GLN*     1.3    78.3    -      -       -      +
    623B  GLU*     1.3    65.0    +      -       +      +
    625B  ALA*     3.4     3.4    +      -       -      -
    626B  GLN*     3.1    37.7    +      -       +      +
    660B  PRO*     4.5    12.5    -      -       +      +
    661B  PRO*     5.6     4.8    -      -       +      +
    709B  PRO*     4.6     2.4    -      -       -      +
    714B  ARG*     2.7    41.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 623 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    572B  GLN      4.9     3.3    -      -       -      +
    575B  PRO*     3.3    32.2    -      -       +      +
    616B  GLN*     5.6     2.5    +      -       -      -
    619B  ARG*     2.8    39.2    +      -       -      +
    620B  ALA*     4.9     0.8    -      -       -      -
    622B  GLU*     1.3    71.7    -      -       +      +
    624B  MET*     1.3    66.8    +      -       -      +
    625B  ALA      3.1     1.5    +      -       -      -
    626B  GLN*     3.4     6.1    +      -       -      +
    627B  VAL*     3.1    27.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 624 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    565B  PHE*     4.9     2.9    -      -       +      -
    571B  LEU*     5.3     1.1    -      -       +      -
    574B  ALA*     4.3    14.8    -      -       +      -
    575B  PRO*     4.1    24.2    -      -       +      +
    578B  VAL*     4.1    13.3    -      -       +      +
    582B  PHE*     5.6     0.3    -      -       -      -
    597B  VAL*     3.9    40.8    -      -       +      -
    599B  VAL*     4.6    13.2    -      -       +      -
    620B  ALA*     2.9    41.0    +      -       +      +
    621B  GLN*     3.9     8.7    -      -       +      +
    623B  GLU*     1.3    76.0    -      -       -      +
    625B  ALA*     1.3    56.4    +      -       -      +
    627B  VAL*     3.5     8.7    +      -       -      +
    628B  ALA*     2.8    29.5    +      -       -      +
    635B  LEU*     3.8    18.0    -      -       +      +
    637B  LEU*     4.9     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 625 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    621B  GLN      3.0    18.2    +      -       -      +
    622B  GLU*     3.6     7.4    -      -       -      +
    623B  GLU      3.1     0.2    -      -       -      -
    624B  MET*     1.3    77.7    -      -       -      +
    626B  GLN*     1.3    70.5    +      -       -      +
    628B  ALA*     3.2     5.1    +      -       -      +
    629B  LYS*     2.8    26.5    +      -       -      +
    635B  LEU*     4.2    10.3    -      -       +      -
    661B  PRO      5.1     0.7    -      -       -      +
    662B  ASP*     3.8    27.5    -      -       -      +
    663B  THR*     4.9     8.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 626 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    622B  GLU*     3.1    32.0    +      -       +      +
    623B  GLU*     3.4     5.7    +      -       -      +
    625B  ALA*     1.3    84.2    -      -       -      +
    627B  VAL*     1.3    61.1    +      -       -      +
    629B  LYS*     3.7    14.2    -      -       +      +
    630B  ARG*     2.9    43.9    +      -       +      +
    661B  PRO      4.6     9.5    +      -       -      -
    662B  ASP*     4.5    10.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 627 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    575B  PRO*     4.0    19.1    -      -       +      +
    578B  VAL*     4.1     7.2    -      -       +      -
    579B  GLU*     3.8    38.8    -      -       +      +
    582B  PHE*     4.1    11.7    -      -       +      -
    623B  GLU*     3.1    17.7    +      -       +      +
    624B  MET*     3.5     9.4    -      -       -      +
    626B  GLN*     1.3    75.6    -      -       -      +
    628B  ALA*     1.3    63.4    +      -       -      +
    630B  ARG*     3.2    31.3    +      -       -      +
    631B  TYR*     3.3    22.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 628 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    582B  PHE*     4.0     7.0    -      -       +      -
    624B  MET      2.8    18.7    +      -       -      +
    625B  ALA*     3.4     5.6    -      -       -      +
    627B  VAL*     1.3    76.9    -      -       -      +
    629B  LYS*     1.3    63.2    +      -       -      +
    631B  TYR      3.3     0.7    +      -       -      -
    632B  GLY      3.0    18.5    +      -       -      -
    633B  VAL*     3.0    43.9    +      -       +      +
    635B  LEU*     3.8    22.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 629 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    625B  ALA      2.8    19.2    +      -       -      +
    626B  GLN*     3.3    15.9    +      -       -      +
    628B  ALA*     1.3    72.5    -      -       -      +
    630B  ARG*     1.3    64.5    +      -       +      +
    632B  GLY*     3.2    12.5    +      -       -      +
    633B  VAL      5.0     2.0    -      -       -      -
    662B  ASP*     3.4    33.9    +      -       -      +
    665B  ASN*     5.0     3.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 630 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    579B  GLU*     3.0    40.0    +      -       -      -
    626B  GLN*     2.9    30.2    +      -       +      +
    627B  VAL*     3.5    23.6    -      -       -      +
    628B  ALA      3.2     0.4    -      -       -      -
    629B  LYS*     1.3    79.3    -      -       +      +
    631B  TYR*     1.3    68.4    +      -       +      +
    632B  GLY      3.6     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 631 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    579B  GLU*     3.1    47.8    +      -       +      +
    582B  PHE*     3.5    55.2    -      +       +      -
    583B  SER*     4.1    11.7    -      -       -      -
    588B  MET*     3.6    25.3    -      -       +      +
    627B  VAL*     3.3    18.5    +      -       +      +
    628B  ALA      3.3     1.1    +      -       -      +
    630B  ARG*     1.3    88.3    -      -       +      +
    632B  GLY*     1.3    62.5    +      -       -      +
    633B  VAL*     3.5     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 632 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    593B  GLY*     4.3     8.1    -      -       -      +
    628B  ALA      3.0     5.8    +      -       -      -
    629B  LYS*     3.2    13.0    +      -       -      -
    630B  ARG      3.3     1.2    +      -       -      -
    631B  TYR*     1.3    78.3    -      -       -      +
    633B  VAL*     1.3    61.4    +      -       -      +
----------------------------------------------------------
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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