Contacts of the helix formed by residues 703 - 732 (chain D) in PDB entry 3TE3


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 SER 703 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    701D  TRP      3.3     4.6    +      -       -      -
    702D  VAL*     1.3    75.7    -      -       -      +
    704D  GLY*     1.3    62.8    +      -       -      +
    705D  GLU*     3.6     8.7    +      -       -      +
    706D  GLU*     3.0    38.4    +      -       -      +
    707D  PHE*     3.3    21.0    +      -       -      +
    699F  GLY      4.4     7.4    -      -       -      -
    700F  GLY      3.7    10.8    -      -       -      -
    701F  TRP*     4.8     2.5    -      -       -      -
    702F  VAL*     4.3     1.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 704 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    703D  SER*     1.3    74.2    -      -       -      +
    705D  GLU*     1.3    56.3    +      -       -      +
    707D  PHE*     3.8     8.6    -      -       -      +
    708D  TYR*     2.9    30.4    +      -       -      +
    699F  GLY*     4.2     1.6    -      -       -      -
    700F  GLY*     3.2    29.5    +      -       -      +
    701F  TRP      4.1     0.4    -      -       -      +
    702F  VAL*     4.5     7.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 705 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    703D  SER*     3.4     6.8    +      -       -      +
    704D  GLY*     1.3    73.7    -      -       -      +
    706D  GLU*     1.3    69.3    +      -       -      +
    708D  TYR*     3.3     8.1    +      -       +      +
    709D  MET*     3.0    54.2    +      -       +      +
    699F  GLY*     3.3    24.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 706 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    701D  TRP      4.3     2.5    -      -       -      +
    702D  VAL*     3.6    10.3    -      -       +      +
    703D  SER*     3.0    37.0    +      -       -      +
    705D  GLU*     1.3    80.5    -      -       -      +
    707D  PHE*     1.3    65.1    +      -       -      +
    709D  MET*     2.9    30.2    +      -       +      +
    710D  LEU*     3.0    12.5    +      -       -      +
    704E  GLY*     6.1     0.3    -      -       -      -
    707E  PHE*     3.4    44.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 707 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    702D  VAL*     5.8     1.3    -      -       +      +
    703D  SER      3.3    14.2    +      -       -      +
    704D  GLY*     3.8     6.7    -      -       -      +
    706D  GLU*     1.3    78.9    -      -       -      +
    708D  TYR*     1.3    61.3    +      -       +      +
    710D  LEU*     3.3     8.3    +      -       -      +
    711D  THR*     2.8    48.3    +      -       +      +
    707E  PHE*     4.2     6.6    -      -       +      -
    702F  VAL*     3.3    35.7    -      -       +      -
    706F  GLU*     3.7    42.6    -      -       +      -
    707F  PHE*     4.1    13.7    -      +       +      -
    710F  LEU*     3.7    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 708 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    704D  GLY      2.9    20.0    +      -       -      +
    705D  GLU*     3.5    10.5    -      -       +      +
    707D  PHE*     1.3    81.1    -      -       +      +
    709D  MET*     1.3    71.5    +      -       +      +
    711D  THR*     2.9    25.5    +      -       -      -
    712D  ARG*     2.9    54.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 709 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    705D  GLU*     3.0    37.8    +      -       +      +
    706D  GLU*     2.9    24.9    +      -       +      +
    708D  TYR*     1.3    84.6    -      -       +      +
    710D  LEU*     1.3    62.5    +      -       -      +
    712D  ARG*     3.1     9.4    +      -       -      +
    713D  ARG*     3.0    28.6    +      -       +      +
    707E  PHE*     5.7     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 710 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    706D  GLU      3.0     9.0    +      -       -      +
    707D  PHE*     3.4    11.7    -      -       -      +
    709D  MET*     1.3    76.8    -      -       -      +
    711D  THR*     1.3    56.4    +      -       -      +
    713D  ARG*     3.1    10.9    +      -       +      +
    714D  VAL*     2.9    30.5    +      -       +      +
    707E  PHE*     3.5    31.9    -      -       +      -
    710E  LEU*     4.1    26.5    -      -       +      -
    711E  THR*     3.9    32.5    -      -       +      +
    714E  VAL*     4.3    25.4    -      -       +      -
    707F  PHE*     5.2     1.3    -      -       +      -
    710F  LEU*     4.4    11.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 711 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    707D  PHE*     2.8    51.2    +      -       +      +
    708D  TYR*     2.9    18.8    +      -       -      -
    710D  LEU*     1.3    72.5    -      -       -      +
    712D  ARG*     1.3    67.8    +      -       -      +
    714D  VAL*     3.8     1.1    -      -       -      +
    715D  LEU*     2.9    33.7    +      -       -      +
    710F  LEU*     3.7    27.4    -      -       +      -
    713F  ARG*     4.9     7.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 712 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    708D  TYR*     2.9    57.1    +      -       +      +
    709D  MET*     3.4    10.3    -      -       -      +
    711D  THR*     1.3    82.1    +      -       -      +
    713D  ARG*     1.3    72.3    +      -       -      +
    715D  LEU*     3.2    27.9    -      -       -      +
    716D  GLN*     3.0    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 713 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    709D  MET*     3.0    21.0    +      -       +      +
    710D  LEU*     3.6    11.4    -      -       +      +
    712D  ARG*     1.3    81.1    +      -       -      +
    714D  VAL*     1.3    56.5    +      -       -      +
    716D  GLN*     2.7    39.0    +      -       -      +
    717D  LEU*     2.9    32.2    +      -       -      +
    714E  VAL*     3.9    18.8    -      -       +      -
    715E  LEU*     6.0     2.2    -      -       +      -
    718E  GLU*     2.6    33.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 714 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    710D  LEU*     2.9    19.6    +      -       +      +
    711D  THR      3.8     3.6    -      -       -      +
    713D  ARG*     1.3    71.6    -      -       -      +
    715D  LEU*     1.3    66.4    +      -       -      +
    717D  LEU*     3.2    10.7    +      -       +      +
    718D  GLU*     2.9    43.1    +      -       -      +
    714E  VAL*     3.8    15.7    -      -       +      -
    710F  LEU*     4.2    21.1    -      -       +      -
    713F  ARG*     3.9    15.0    -      -       +      +
    714F  VAL*     3.8    25.8    -      -       +      -
    717F  LEU*     4.0    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 715 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    711D  THR*     2.9    24.0    +      -       -      +
    712D  ARG*     3.2    38.6    -      -       -      +
    714D  VAL*     1.3    72.1    -      -       -      +
    716D  GLN*     1.3    63.2    +      -       -      +
    718D  GLU*     3.3    12.2    +      -       -      +
    719D  THR*     3.1    32.0    +      -       -      +
    713F  ARG*     4.1    23.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 716 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    712D  ARG      3.0    13.1    +      -       -      +
    713D  ARG*     2.7    49.8    +      -       -      +
    715D  LEU*     1.3    73.4    -      -       -      +
    717D  LEU*     1.3    66.0    +      -       -      +
    719D  THR*     3.3     7.4    +      -       +      -
    720D  VAL*     3.0    43.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 717 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    713D  ARG      2.9    15.6    +      -       -      +
    714D  VAL*     3.5    12.8    -      -       +      +
    716D  GLN*     1.3    76.1    -      -       -      +
    718D  GLU*     1.3    64.3    +      -       -      +
    720D  VAL*     3.9     1.1    -      -       -      +
    721D  LEU*     2.9    31.4    +      -       +      +
    714E  VAL*     3.7    31.0    -      -       +      +
    717E  LEU*     3.9    29.6    -      -       +      -
    718E  GLU*     3.5    35.9    -      -       +      +
    721E  LEU*     3.9    22.1    -      -       +      +
    717F  LEU*     4.2    11.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 718 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    716B  GLN*     5.5     1.2    +      -       -      -
    714D  VAL*     2.9    21.2    +      -       -      +
    715D  LEU*     3.6    14.4    -      -       -      +
    717D  LEU*     1.3    76.3    -      -       -      +
    719D  THR*     1.3    57.2    +      -       -      +
    721D  LEU*     3.6     5.9    -      -       -      +
    722D  GLU*     2.9    30.2    +      -       -      +
    713F  ARG*     2.9    49.1    +      -       -      +
    717F  LEU*     3.5    28.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 719 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    715D  LEU*     3.1    21.4    +      -       -      +
    716D  GLN*     3.6    11.6    -      -       -      -
    718D  GLU*     1.3    74.4    -      -       -      +
    720D  VAL*     1.3    67.6    +      -       +      +
    722D  GLU*     3.3    17.7    +      -       -      +
    723D  GLY*     3.1    18.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 720 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    716D  GLN*     3.0    37.3    +      -       +      +
    717D  LEU*     4.8     0.4    -      -       -      -
    719D  THR*     1.3    76.3    -      -       +      +
    721D  LEU*     1.3    64.5    +      -       -      +
    723D  GLY*     3.1     5.5    +      -       -      -
    724D  VAL*     2.9    22.7    +      -       +      +
    721E  LEU*     3.6    24.2    -      -       +      -
    725E  VAL*     4.0    22.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 721 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    716B  GLN*     5.2     2.9    -      -       -      +
    717D  LEU*     2.9    19.9    +      -       +      +
    718D  GLU*     3.6     5.2    -      -       -      +
    720D  VAL*     1.3    78.1    -      -       -      +
    722D  GLU*     1.3    63.4    +      -       -      +
    724D  VAL*     3.0     9.6    +      -       +      +
    725D  VAL*     2.9    29.8    +      -       -      +
    717E  LEU*     6.4     0.9    -      -       +      -
    721E  LEU*     3.9    27.5    -      -       +      +
    717F  LEU*     3.9    42.6    -      -       +      +
    720F  VAL*     3.9    25.6    -      -       +      -
    721F  LEU*     4.5    12.6    -      -       +      +
    724F  VAL*     4.7     9.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 722 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    712B  ARG*     3.3    36.4    +      -       -      +
    716B  GLN*     4.4     9.6    -      -       -      +
    718D  GLU      2.9    18.4    +      -       -      +
    719D  THR*     3.5    16.1    -      -       -      +
    720D  VAL      3.3     0.2    -      -       -      -
    721D  LEU*     1.3    74.4    -      -       -      +
    723D  GLY*     1.3    67.1    +      -       -      +
    725D  VAL      3.5     0.2    +      -       -      -
    726D  SER*     3.1    20.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 723 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    719D  THR      3.1     6.5    +      -       -      -
    720D  VAL      3.1     7.4    +      -       -      -
    722D  GLU*     1.3    84.9    -      -       -      +
    724D  VAL*     1.3    55.5    +      -       -      +
    726D  SER*     3.1     9.3    +      -       -      -
    727D  GLN*     2.9    37.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 724 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    720D  VAL*     2.9    24.8    +      -       +      +
    721D  LEU*     3.0    13.2    +      -       +      +
    723D  GLY*     1.3    72.0    -      -       -      +
    725D  VAL*     1.3    65.2    +      -       -      +
    727D  GLN*     3.0    18.5    +      -       -      +
    728D  ILE*     2.9    21.8    +      -       +      +
    721E  LEU*     4.4     7.0    -      -       +      -
    724E  VAL*     4.1    11.9    -      -       +      -
    725E  VAL*     4.1    28.9    -      -       +      -
    728E  ILE*     4.5    10.8    -      -       +      -
    724F  VAL*     3.5    32.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 725 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    712B  ARG*     3.8     8.3    -      -       -      +
    715B  LEU*     3.9    20.1    -      -       +      +
    716B  GLN*     3.8    24.9    -      -       -      +
    719B  THR*     4.1    15.7    -      -       -      +
    721D  LEU*     2.9    22.9    +      -       +      +
    722D  GLU*     4.2     1.3    -      -       -      +
    724D  VAL*     1.3    72.9    -      -       -      +
    726D  SER*     1.3    67.1    +      -       -      +
    728D  ILE*     3.6    13.4    -      -       +      +
    729D  ASP*     2.9    24.6    +      -       -      +
    720F  VAL*     4.3    15.0    -      -       +      -
    724F  VAL*     4.0    19.7    -      -       +      -
    727F  GLN*     5.8     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 726 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    708B  TYR*     5.8     2.0    -      -       -      -
    712B  ARG*     4.2    19.1    -      -       -      -
    715B  LEU*     4.4     8.1    -      -       -      -
    722D  GLU*     3.1    14.2    +      -       -      +
    723D  GLY*     3.1    16.8    +      -       -      -
    725D  VAL*     1.3    84.2    -      -       -      +
    727D  GLN*     1.3    57.7    +      -       -      +
    729D  ASP*     3.4     1.6    +      -       -      +
    730D  ALA*     2.9    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 727 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    723D  GLY*     2.9    22.1    +      -       -      +
    724D  VAL*     3.0    14.2    +      -       -      +
    726D  SER*     1.3    78.9    +      -       -      +
    728D  ILE*     1.3    57.4    +      -       -      +
    730D  ALA*     3.2     9.1    +      -       -      +
    731D  VAL*     3.0    27.4    +      -       -      +
    728E  ILE*     3.8    31.0    -      -       +      +
    729E  ASP*     4.6     7.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 728 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    724D  VAL*     2.9    15.8    +      -       +      +
    725D  VAL*     3.6    12.8    -      -       -      +
    727D  GLN*     1.3    69.2    -      -       -      +
    729D  ASP*     1.3    68.8    +      -       -      +
    731D  VAL*     3.1    11.2    +      -       +      +
    732D  GLY*     3.0    19.1    +      -       -      -
    728E  ILE*     3.3    35.2    -      -       +      -
    724F  VAL*     3.6    35.4    -      -       +      +
    727F  GLN*     3.5    42.2    -      -       +      +
    728F  ILE*     4.6    14.4    -      -       +      +
    731F  VAL*     5.2     6.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 729 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    713A  ARG*     4.8    10.6    +      -       -      -
    715B  LEU*     3.5    38.6    -      -       +      +
    718B  GLU*     4.9     0.7    -      -       -      +
    725D  VAL      2.9    19.0    +      -       -      +
    726D  SER      3.8     3.3    -      -       -      +
    728D  ILE*     1.3    80.1    -      -       +      +
    730D  ALA*     1.3    65.6    +      -       -      +
    732D  GLY*     3.1    19.4    +      -       -      +
    727F  GLN*     5.1     4.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 730 (chain D). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    726D  SER      2.9    14.2    +      -       -      +
    727D  GLN*     3.2    11.6    +      -       -      +
    729D  ASP*     1.3    80.7    +      -       -      +
    731D  VAL*     1.3    66.3    +      -       -      +
    732D  GLY      4.1     2.3    -      -       -      +
    733D  SER*     4.7     2.1    +      -       -      -
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Residues in contact with VAL 731 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    727D  GLN      3.0    16.7    +      -       -      +
    728D  ILE*     3.1    13.7    +      -       +      +
    730D  ALA*     1.3    79.4    -      -       -      +
    732D  GLY*     1.3    67.1    +      -       -      +
    733D  SER*     2.9    14.2    +      -       -      -
    728E  ILE*     5.2     7.2    -      -       +      -
    731E  VAL*     4.8    25.4    -      -       +      -
    731F  VAL*     3.6    36.6    -      -       +      -
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Residues in contact with GLY 732 (chain D). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    728D  ILE      3.0    16.7    +      -       -      -
    729D  ASP*     3.1    13.7    +      -       -      +
    730D  ALA      4.1     1.6    -      -       -      +
    731D  VAL*     1.3    76.5    -      -       -      +
    733D  SER*     1.3    61.6    +      -       -      -
    731F  VAL*     4.9     8.7    -      -       -      -
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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) +   -    +    +   +   +    +    -
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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