Contacts of the helix formed by residues 621 - 643 (chain A) in PDB entry 3RC3


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 ASN 621 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    619A  PRO*     4.1     1.7    -      -       -      +
    620A  LYS*     1.3    81.3    -      -       -      +
    622A  ILE*     1.3    65.0    +      -       -      +
    623A  LYS*     3.3    12.7    +      -       -      +
    624A  ASP*     2.8    45.7    +      -       -      +
    625A  LEU*     3.2    17.7    +      -       -      +
    676A  LEU*     3.6    18.3    -      -       -      +
    679A  MSE      4.2    11.0    -      -       +      +
    680A  SER*     3.4    15.3    -      -       -      +
    684A  LYS*     3.9    31.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 622 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    379A  TYR*     3.5    48.7    -      -       +      +
    621A  ASN*     1.3    71.6    -      -       -      +
    623A  LYS*     1.3    65.4    +      -       -      +
    625A  LEU*     3.0    13.7    +      -       +      +
    626A  MSE      2.9    33.0    +      -       +      +
    673A  ILE*     5.6     2.0    -      -       +      -
    676A  LEU*     3.8     4.6    +      -       +      +
    677A  ILE*     3.9    36.6    -      -       +      +
    680A  SER*     3.0    29.7    +      -       -      +
    686A  LEU*     4.1    14.6    -      -       +      -
    688A  LEU*     4.3     4.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 623 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    583A  GLN*     5.8     1.4    +      -       -      -
    621A  ASN*     3.3    11.9    +      -       -      +
    622A  ILE*     1.3    78.7    -      -       -      +
    624A  ASP*     1.3    60.8    +      -       -      +
    626A  MSE      3.2    32.2    +      -       +      +
    627A  ASP*     2.9    51.5    +      -       -      +
    680A  SER*     4.4     1.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 624 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    618A  PRO      4.9     0.3    -      -       -      +
    619A  PRO*     3.4    18.7    -      -       +      +
    620A  LYS*     2.7    31.2    +      -       -      +
    621A  ASN*     2.8    35.6    +      -       -      +
    623A  LYS*     1.3    76.7    -      -       -      +
    625A  LEU*     1.3    62.8    +      -       -      +
    627A  ASP*     3.4    11.3    +      -       -      +
    628A  LEU*     3.1    25.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 625 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    379A  TYR*     5.8     1.6    -      -       +      +
    396A  TYR*     3.2    25.1    -      -       -      +
    619A  PRO*     3.7     8.2    -      -       +      +
    621A  ASN      3.2     7.8    +      -       -      +
    622A  ILE*     3.0    16.2    +      -       +      +
    624A  ASP*     1.3    78.6    -      -       -      +
    626A  MSE      1.3    58.7    +      -       -      +
    628A  LEU*     3.2     7.9    +      -       +      +
    629A  GLU*     3.0    36.6    +      -       +      +
    666A  ILE*     3.8    33.0    -      -       +      +
    670A  VAL*     3.9    18.8    -      -       +      +
    673A  ILE*     4.1    17.3    -      -       +      -
    676A  LEU*     4.0    20.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with MSE 626 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    375A  LYS*     6.4     0.4    -      -       -      +
    379A  TYR*     5.4     3.4    -      -       -      +
    583A  GLN*     3.5    32.5    -      -       -      +
    622A  ILE*     2.9    21.3    +      -       +      +
    623A  LYS*     3.5    42.4    -      -       +      +
    625A  LEU*     1.3    72.7    -      -       -      +
    627A  ASP*     1.3    66.1    +      -       -      +
    629A  GLU*     3.3    15.2    +      -       +      +
    630A  ALA*     2.9    22.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 627 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    583A  GLN*     4.9     5.7    -      -       -      +
    623A  LYS*     2.9    45.1    +      -       -      +
    624A  ASP*     3.6    13.6    -      -       -      +
    625A  LEU      3.3     0.4    -      -       -      -
    626A  MSE      1.3    77.5    -      -       -      +
    628A  LEU*     1.3    58.3    +      -       +      +
    630A  ALA*     3.1     7.9    +      -       -      +
    631A  VAL*     2.9    34.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 628 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    616A  LEU*     3.9    33.9    -      -       +      -
    617A  LEU      4.1     8.5    -      -       -      +
    619A  PRO*     3.7    37.0    -      -       +      -
    624A  ASP*     3.1    17.4    +      -       +      +
    625A  LEU*     3.2     8.5    +      -       +      +
    627A  ASP*     1.3    78.9    -      -       +      +
    629A  GLU*     1.3    53.0    +      -       -      +
    631A  VAL*     3.3     7.7    +      -       -      +
    632A  HIS*     2.8    32.4    +      -       -      +
    662A  LEU*     3.9    14.8    -      -       +      +
    665A  ILE*     3.9    14.4    -      -       +      -
    666A  ILE*     3.6    24.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 629 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    375A  LYS*     4.1     3.8    +      -       -      -
    396A  TYR*     2.5    37.3    +      -       -      -
    398A  SER*     2.9    40.1    +      -       -      +
    399A  LEU*     3.6     7.3    -      -       -      +
    400A  PRO*     4.6     5.6    -      -       +      -
    625A  LEU*     3.0    30.6    +      -       +      +
    626A  MSE      3.5    15.9    -      -       +      +
    627A  ASP      3.2     0.2    -      -       -      -
    628A  LEU*     1.3    75.7    -      -       -      +
    630A  ALA*     1.3    57.6    +      -       -      +
    632A  HIS*     3.3     5.9    +      -       -      +
    633A  ASP*     3.0    33.6    +      -       -      +
    666A  ILE*     4.1    13.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 630 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    583A  GLN*     3.7    32.5    -      -       +      +
    585A  PHE*     4.6    12.8    -      -       +      -
    586A  VAL*     3.9     6.0    -      -       +      +
    626A  MSE      2.9    14.0    +      -       -      +
    627A  ASP*     3.1    12.5    +      -       -      +
    629A  GLU*     1.3    74.9    -      -       -      +
    631A  VAL*     1.3    63.7    +      -       -      +
    633A  ASP*     3.2    11.3    +      -       -      +
    634A  VAL*     3.0    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 631 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    585A  PHE*     4.2    18.8    -      -       +      -
    612A  ILE*     3.8    33.4    -      -       +      +
    616A  LEU*     3.8    29.4    -      -       +      -
    627A  ASP*     2.9    22.6    +      -       +      +
    628A  LEU*     3.5     8.1    -      -       +      +
    630A  ALA*     1.3    71.2    -      -       -      +
    632A  HIS*     1.3    66.6    +      -       -      +
    634A  VAL*     3.0    16.6    +      -       -      +
    635A  LEU*     3.0    14.7    +      -       +      +
    662A  LEU*     3.7    16.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 632 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398A  SER      5.8     0.8    +      -       -      -
    400A  PRO*     3.4    38.1    -      -       +      +
    401A  PRO*     4.1    14.8    -      -       +      +
    628A  LEU      2.8    17.9    +      -       -      +
    629A  GLU*     3.4    11.2    +      -       -      +
    631A  VAL*     1.3    72.1    -      -       -      +
    633A  ASP*     1.4    64.3    +      -       -      +
    635A  LEU*     3.2     3.7    +      -       -      +
    636A  ASP*     3.0    38.7    +      -       -      +
    659A  GLN*     3.2    58.4    +      -       +      +
    662A  LEU*     3.4    15.1    -      -       +      +
    663A  ASP*     4.5     6.7    +      -       +      -
    666A  ILE*     4.1     8.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 633 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398A  SER*     5.2    11.2    -      -       -      +
    580A  ASN*     4.4    23.0    +      -       -      +
    583A  GLN*     5.3     1.4    -      -       -      +
    586A  VAL*     4.0    18.5    -      -       +      +
    629A  GLU*     3.0    20.9    +      -       -      +
    630A  ALA*     3.5    11.0    -      -       -      +
    631A  VAL      3.2     0.2    -      -       -      -
    632A  HIS*     1.4    81.3    +      -       -      +
    634A  VAL*     1.3    62.0    +      -       -      +
    636A  ASP*     3.4    12.4    +      -       -      +
    637A  LEU*     2.9    26.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 634 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    585A  PHE*     3.6    24.0    -      -       +      -
    586A  VAL*     3.9    15.9    -      -       +      -
    589A  SER*     3.4    40.2    -      -       -      +
    593A  PHE*     3.8    15.2    -      -       +      -
    608A  LEU*     4.6     8.5    -      -       +      -
    611A  TYR*     4.6     5.4    -      -       +      -
    612A  ILE*     4.8     4.5    -      -       +      -
    630A  ALA      3.0    17.2    +      -       -      +
    631A  VAL*     3.0     9.6    +      -       -      +
    633A  ASP*     1.3    77.9    -      -       -      +
    635A  LEU*     1.3    56.9    +      -       +      +
    637A  LEU*     3.2     7.8    +      -       +      +
    638A  TYR*     3.0    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 635 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    608A  LEU*     3.6    34.3    -      -       +      -
    612A  ILE*     4.2    19.7    -      -       +      -
    631A  VAL*     3.0    17.0    +      -       +      +
    632A  HIS      3.2     7.2    +      -       -      +
    634A  VAL*     1.3    76.6    -      -       +      +
    636A  ASP*     1.3    57.7    +      -       -      +
    638A  TYR*     3.2     5.9    +      -       -      +
    639A  LEU*     3.0    32.2    +      -       -      +
    655A  ILE*     4.1    10.4    -      -       +      +
    658A  LEU*     4.2    15.9    -      -       +      -
    659A  GLN*     3.6    48.0    -      -       +      +
    662A  LEU*     4.1    14.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 636 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    234A  LYS*     4.0    15.8    +      -       -      -
    257A  GLU*     3.7    23.2    -      -       +      +
    632A  HIS*     3.0    25.9    +      -       -      +
    633A  ASP*     3.5    14.6    -      -       -      +
    635A  LEU*     1.3    75.7    -      -       -      +
    637A  LEU*     1.3    56.7    +      -       -      +
    639A  LEU*     3.2     8.5    +      -       -      +
    640A  TRP*     2.8    30.7    +      -       -      +
    659A  GLN*     2.9    25.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 637 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    577A  ALA*     3.5    32.5    -      -       +      -
    578A  PRO      5.1     4.3    -      -       -      +
    579A  ILE*     4.0    21.1    -      -       +      -
    586A  VAL*     4.4     9.0    -      -       +      +
    589A  SER*     4.4     3.8    -      -       -      -
    590A  LEU*     3.9    33.0    -      -       +      +
    593A  PHE*     3.8    26.9    -      -       +      -
    633A  ASP      2.9    14.1    +      -       -      +
    634A  VAL*     3.2     9.8    +      -       -      +
    636A  ASP*     1.3    74.7    -      -       -      +
    638A  TYR*     1.3    64.2    +      -       -      +
    640A  TRP*     3.6     5.7    -      -       +      +
    641A  LEU*     3.0    36.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 638 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    593A  PHE*     3.9    15.0    -      +       +      -
    603A  LEU*     2.7    44.6    +      -       +      -
    604A  THR      4.8     0.4    -      -       -      -
    608A  LEU*     3.5    33.9    -      -       +      -
    634A  VAL      3.0    13.3    +      -       -      +
    635A  LEU      3.5     8.3    -      -       -      +
    637A  LEU*     1.3    77.5    -      -       -      +
    639A  LEU*     1.3    62.9    +      -       +      +
    641A  LEU*     3.3     2.4    +      -       -      +
    642A  SER*     3.0    24.6    +      -       -      -
    649A  PHE*     3.3    34.0    -      +       +      -
    651A  ASP*     3.0    36.5    +      -       -      +
    652A  ALA*     4.1     3.4    -      -       -      -
    655A  ILE*     3.7    27.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 639 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    257A  GLU*     3.8    18.8    -      -       +      +
    258A  GLU*     5.9     0.9    -      -       +      -
    635A  LEU      3.0    18.4    +      -       -      +
    636A  ASP*     3.5    12.6    -      -       -      +
    638A  TYR*     1.3    77.3    -      -       +      +
    640A  TRP*     1.3    62.6    +      -       -      +
    642A  SER*     2.6    22.9    +      -       -      +
    643A  TYR*     3.2    13.9    -      -       +      -
    652A  ALA*     3.4    42.6    -      -       +      +
    655A  ILE*     4.1    11.4    -      -       +      -
    656A  ARG*     4.1    31.2    -      -       +      +
    659A  GLN*     3.5    27.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 640 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256A  GLY*     3.6    22.5    -      -       -      -
    257A  GLU*     3.3    26.5    -      -       -      +
    573A  VAL*     3.6    21.5    -      -       +      -
    576A  THR*     3.3    29.8    -      -       -      -
    577A  ALA*     3.5    31.4    -      -       +      -
    578A  PRO*     3.6    22.7    -      -       +      +
    636A  ASP      2.8    20.0    +      -       -      +
    637A  LEU*     3.6     8.7    -      -       +      +
    639A  LEU*     1.3    72.9    -      -       -      +
    641A  LEU*     1.3    74.5    +      -       +      +
    643A  TYR      3.4     2.9    +      -       -      -
    644A  ARG*     2.7    69.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 641 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    574A  PHE*     3.8    34.8    -      -       +      -
    577A  ALA*     4.4     4.5    -      -       +      -
    590A  LEU*     5.1     0.4    -      -       +      -
    593A  PHE*     3.7    27.8    -      -       +      -
    637A  LEU*     3.0    32.4    +      -       +      +
    638A  TYR      3.8     3.1    -      -       -      +
    640A  TRP*     1.3   101.7    -      -       +      +
    642A  SER*     1.3    56.9    +      -       -      +
    644A  ARG*     2.9     5.0    +      -       -      +
    645A  PHE*     2.8    45.1    +      -       +      +
    649A  PHE*     3.8    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 642 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    638A  TYR*     3.0    15.8    +      -       -      -
    639A  LEU*     2.6    21.3    +      -       -      -
    641A  LEU*     1.3    76.3    -      -       -      +
    643A  TYR*     1.3    66.2    +      -       -      +
    644A  ARG      3.3     0.2    -      -       -      -
    645A  PHE      3.9     1.3    -      -       -      -
    646A  MSE      3.4    27.4    -      -       -      +
    649A  PHE*     3.3    34.0    -      -       -      +
    652A  ALA*     3.5    26.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 643 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256A  GLY      4.0     6.3    -      -       -      -
    257A  GLU      3.3    24.2    -      -       -      -
    258A  GLU*     3.7     1.0    -      -       -      -
    259A  ARG*     3.3    81.8    +      -       +      +
    639A  LEU*     3.2    21.8    -      -       -      -
    640A  TRP      3.4     1.2    +      -       -      -
    641A  LEU      3.1     0.8    -      -       -      -
    642A  SER*     1.3    83.8    +      -       -      +
    644A  ARG*     1.4    70.8    +      -       -      +
    646A  MSE      5.0     6.8    -      -       +      +
    652A  ALA*     5.4     2.0    -      -       +      -
    656A  ARG*     3.1    26.1    +      -       -      -
----------------------------------------------------------
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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