Contacts of the helix formed by residues 455 - 477 (chain B) in PDB entry 6QVC


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 455 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    434B  VAL*     5.0     8.2    -      -       -      +
    437B  ALA*     5.6     3.6    -      -       -      +
    453B  ARG      4.1     1.8    +      -       -      -
    454B  VAL*     1.3    78.3    -      -       -      +
    456B  VAL*     1.3    76.3    +      -       -      +
    457B  VAL*     3.2    23.4    +      -       +      +
    458B  ILE*     3.0    41.5    +      -       +      +
    459B  ILE*     3.5     2.4    +      -       -      +
    504B  MET*     5.1    11.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 456 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    433B  TRP*     4.6    21.8    -      -       +      +
    434B  VAL*     4.2    22.0    -      -       +      -
    437B  ALA*     4.8    15.3    -      -       +      -
    449B  TRP*     3.3    27.8    -      -       +      +
    450B  ILE*     4.7     9.0    -      -       +      -
    451B  HIS      5.2     1.3    -      -       -      +
    454B  VAL      4.4     6.3    -      -       -      +
    455B  ASN*     1.3    84.9    +      -       -      +
    457B  VAL*     1.3    62.7    +      -       -      +
    458B  ILE      3.2     0.2    -      -       -      -
    459B  ILE*     3.2    15.6    -      -       +      +
    460B  ILE*     3.0    39.6    +      -       +      +
    500B  GLU*     5.3     2.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 457 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    434B  VAL*     6.1     3.6    -      -       +      -
    455B  ASN*     3.4    28.9    -      -       -      +
    456B  VAL*     1.3    82.6    -      -       -      +
    458B  ILE*     1.3    65.2    +      -       +      +
    460B  ILE*     3.4     8.7    +      -       -      +
    461B  PHE*     2.9    28.7    +      -       +      +
    497B  LEU*     3.8    20.8    -      -       +      +
    500B  GLU*     6.0     5.4    -      -       +      -
    501B  ILE*     3.8    22.2    -      -       +      -
    504B  MET*     5.9     5.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 458 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    454B  VAL*     3.9    20.2    -      -       +      -
    455B  ASN*     3.0    29.6    +      -       +      +
    457B  VAL*     1.3    87.1    -      -       +      +
    459B  ILE*     1.3    57.7    +      -       -      +
    461B  PHE*     3.3     8.1    +      -       +      +
    462B  LEU*     2.9    51.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 459 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    412B  GLN      5.5     0.4    -      -       -      +
    413B  PHE*     4.0    30.0    -      -       +      +
    414B  MET*     5.2     2.2    -      -       -      +
    415B  ALA*     5.6     4.7    -      -       +      +
    448B  VAL      4.8     2.2    -      -       -      +
    449B  TRP*     3.4    56.4    -      -       +      +
    450B  ILE      4.3     0.4    -      -       -      +
    451B  HIS*     4.7    12.1    -      -       +      +
    454B  VAL*     3.9    20.2    -      -       +      +
    455B  ASN      3.7    13.0    -      -       -      +
    456B  VAL*     3.2    16.4    -      -       +      +
    458B  ILE*     1.3    76.6    -      -       -      +
    460B  ILE*     1.3    60.6    +      -       -      +
    462B  LEU*     4.0     2.7    -      -       +      +
    463B  PHE*     2.9    30.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 460 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    427B  LEU*     6.2     1.3    -      -       +      -
    433B  TRP*     4.4    22.9    -      -       +      -
    449B  TRP*     3.7    25.1    -      -       +      -
    456B  VAL*     3.0    27.8    +      -       +      +
    457B  VAL*     3.8     6.5    -      -       -      +
    458B  ILE      3.3     0.2    -      -       -      -
    459B  ILE*     1.3    78.3    -      -       -      +
    461B  PHE*     1.3    56.2    +      -       -      +
    463B  PHE*     3.4     8.2    +      -       +      +
    464B  PHE*     2.9    29.2    +      -       +      +
    493B  ALA*     3.9    15.7    -      -       +      +
    496B  ARG*     4.9     9.4    -      -       +      +
    497B  LEU*     3.8    32.5    -      -       +      +
    500B  GLU*     4.6    18.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 461 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    457B  VAL*     2.9    19.1    +      -       +      +
    458B  ILE*     3.3     9.8    +      -       +      +
    460B  ILE*     1.3    78.3    -      -       -      +
    462B  LEU*     1.3    70.6    +      -       +      +
    464B  PHE*     3.3    14.2    +      +       -      +
    465B  VAL*     3.0    43.4    +      -       +      +
    497B  LEU*     4.5    23.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 462 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    410B  MET*     6.5     0.4    -      -       +      -
    413B  PHE*     4.2    30.5    -      -       +      +
    414B  MET*     4.1     4.3    -      -       -      -
    454B  VAL*     6.4     0.4    -      -       +      -
    458B  ILE*     2.9    35.9    +      -       +      +
    459B  ILE*     4.0     3.6    -      -       +      +
    461B  PHE*     1.3    85.2    -      -       +      +
    463B  PHE*     1.3    60.2    +      -       -      +
    465B  VAL*     3.4    13.7    -      -       +      +
    466B  MET*     2.9    35.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 463 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    414B  MET*     3.6    42.9    -      -       +      +
    415B  ALA      5.0     5.8    -      -       -      -
    418B  LEU*     5.2     9.9    -      -       +      -
    423B  ALA*     5.3    10.3    -      -       +      -
    427B  LEU*     5.0     8.5    -      -       +      -
    449B  TRP*     4.2    25.1    -      +       +      -
    459B  ILE      2.9    19.4    +      -       -      +
    460B  ILE*     3.5     7.6    -      -       +      +
    462B  LEU*     1.3    75.9    -      -       -      +
    464B  PHE*     1.3    58.8    +      -       -      +
    467B  LYS*     2.9    65.8    +      -       +      +
    489B  VAL*     4.4    19.1    -      -       +      -
    490B  LEU*     6.0     0.4    -      -       +      -
    493B  ALA*     4.1    23.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 464 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    361B  LEU*     3.7    32.5    -      -       +      -
    460B  ILE*     2.9    18.5    +      -       +      +
    461B  PHE*     3.6    16.6    -      +       -      +
    463B  PHE*     1.3    81.7    -      -       -      +
    465B  VAL*     1.3    66.1    +      -       +      +
    468B  PHE*     2.9    39.5    +      +       +      +
    490B  LEU*     3.3    49.6    -      -       +      +
    493B  ALA*     3.8    16.2    -      -       +      -
    494B  PHE*     4.0    29.6    -      +       +      -
    497B  LEU*     5.6     4.5    -      -       +      -
    532B  LEU*     5.1     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 465 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    461B  PHE*     3.0    35.8    +      -       +      +
    462B  LEU*     3.4    21.3    -      -       +      +
    464B  PHE*     1.3    84.9    -      -       +      +
    466B  MET*     1.3    62.7    +      -       +      +
    468B  PHE*     3.3    13.9    -      -       +      +
    469B  TRP*     3.0    35.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 466 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    401B  ILE*     5.6     0.4    -      -       +      -
    404B  PHE*     3.5    45.5    -      -       +      +
    414B  MET*     3.7    19.7    -      -       +      -
    462B  LEU      2.9    19.6    +      -       -      +
    465B  VAL*     1.3    78.9    -      -       +      +
    467B  LYS*     1.3    63.7    +      -       -      +
    469B  TRP*     3.2    36.7    +      -       +      +
    470B  MET*     3.0    57.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 467 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226B  GLY      5.2     1.8    +      -       -      -
    228B  PRO*     3.6    40.2    -      -       -      +
    414B  MET*     3.9     5.4    -      -       +      -
    418B  LEU      5.7     2.8    +      -       -      -
    420B  PRO*     4.9    11.6    -      -       -      +
    463B  PHE*     2.9    55.7    +      -       +      +
    466B  MET*     1.3    75.7    -      -       -      +
    468B  PHE*     1.3    56.8    +      -       -      +
    470B  MET*     3.7    19.8    -      -       +      +
    471B  SER*     3.0    34.4    +      -       -      -
    486B  PRO*     6.2     2.0    -      -       -      -
    489B  VAL*     4.8    11.7    -      -       +      -
    490B  LEU*     3.7    17.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 468 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    361B  LEU*     4.5    20.0    -      -       +      -
    364B  VAL*     5.1     4.5    -      -       +      -
    365B  PHE*     3.5    45.7    -      +       +      -
    368B  LEU*     4.4    21.1    -      -       +      -
    464B  PHE*     2.9    34.5    +      +       +      +
    465B  VAL*     3.3    16.8    -      -       +      +
    466B  MET      3.1     0.4    -      -       -      -
    467B  LYS*     1.3    76.8    -      -       -      +
    469B  TRP*     1.3    68.5    +      -       +      +
    471B  SER*     3.3    14.9    +      -       -      -
    472B  ILE*     3.7    10.5    -      -       +      +
    490B  LEU*     3.6    24.7    -      -       +      +
    532B  LEU*     6.2     2.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 469 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    400B  VAL*     6.4     2.2    -      -       +      -
    401B  ILE*     5.1     9.0    -      -       +      -
    404B  PHE*     4.3    18.2    -      +       -      -
    465B  VAL*     3.0    38.2    +      -       +      +
    466B  MET*     3.2    40.6    -      -       +      +
    468B  PHE*     1.3    83.5    -      -       +      +
    470B  MET*     1.3    70.1    +      -       +      +
    472B  ILE*     3.3    26.5    -      -       +      +
    473B  VAL*     3.6    13.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 470 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228B  PRO*     5.3     7.0    -      -       +      -
    401B  ILE*     3.7    50.7    -      -       +      +
    404B  PHE*     5.3     1.6    -      -       -      +
    405B  THR*     4.7     7.0    -      -       +      +
    414B  MET*     4.1     5.2    -      -       +      -
    466B  MET*     3.0    67.2    +      -       +      +
    467B  LYS*     3.2    27.3    +      -       +      +
    468B  PHE      3.2     0.4    -      -       -      -
    469B  TRP*     1.3    83.8    -      -       +      +
    471B  SER*     1.3    60.2    +      -       -      +
    472B  ILE      3.4     0.2    -      -       -      -
    473B  VAL*     3.3     7.9    +      -       -      +
    474B  ALA*     2.9    27.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 471 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228B  PRO*     4.8     6.7    -      -       -      +
    365B  PHE*     3.6    18.7    -      -       -      -
    467B  LYS*     3.0    14.6    +      -       -      -
    468B  PHE      3.3    11.8    +      -       -      -
    469B  TRP      3.4     0.2    -      -       -      -
    470B  MET*     1.3    74.1    -      -       -      +
    472B  ILE*     1.3    63.6    +      -       -      +
    474B  ALA*     3.1     9.5    +      -       -      +
    475B  THR*     2.9    30.2    +      -       -      +
    486B  PRO*     4.0    31.1    -      -       -      +
    487B  VAL*     5.9     0.2    -      -       -      +
    490B  LEU*     3.9     8.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 472 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    365B  PHE*     3.5    45.1    -      -       +      +
    368B  LEU*     5.0    14.8    -      -       +      +
    369B  HIS*     4.6    21.8    +      -       +      +
    372B  VAL*     5.4     9.6    -      -       +      -
    468B  PHE*     3.7    11.2    -      -       +      +
    469B  TRP*     3.3    29.4    -      -       +      +
    471B  SER*     1.3    77.3    +      -       -      +
    473B  VAL*     1.3    69.5    +      -       +      +
    475B  THR*     3.3     9.0    -      -       +      +
    476B  THR*     2.2    39.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 473 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    372B  VAL*     5.9     5.6    -      -       +      -
    393B  TYR*     5.1     5.0    +      -       -      +
    397B  VAL*     4.0    31.1    -      -       +      +
    401B  ILE*     5.3    11.7    -      -       +      -
    469B  TRP*     3.6    26.0    -      -       +      +
    470B  MET*     3.3     9.1    +      -       -      +
    471B  SER      3.2     0.6    -      -       -      -
    472B  ILE*     1.3    86.8    -      -       +      +
    474B  ALA*     1.3    61.8    +      -       -      +
    476B  THR*     3.2    20.8    +      -       -      +
    477B  MET*     3.4    12.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 474 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    227B  ILE*     4.2    14.7    -      -       +      +
    228B  PRO*     3.3    30.5    -      -       +      +
    229B  VAL*     5.7     2.9    -      -       -      +
    401B  ILE*     5.4     4.9    -      -       +      +
    470B  MET      2.9    13.7    +      -       -      +
    471B  SER*     3.1    12.5    +      -       -      +
    473B  VAL*     1.3    78.0    -      -       -      +
    475B  THR*     1.3    60.2    +      -       -      +
    477B  MET*     3.3    31.4    -      -       -      +
    479B  ILE*     4.0     6.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 475 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228B  PRO      5.2     0.2    +      -       -      -
    365B  PHE*     5.5     5.8    -      -       +      -
    369B  HIS*     4.0    25.7    -      -       +      +
    373B  MET*     5.8     0.2    -      -       -      +
    471B  SER      2.9    16.0    +      -       -      +
    472B  ILE*     3.3    20.9    -      -       +      +
    474B  ALA*     1.3    73.9    -      -       -      +
    476B  THR*     1.3    63.6    +      -       -      +
    477B  MET      3.5     3.3    -      -       -      +
    481B  CYS*     2.9    44.2    -      -       -      +
    482B  GLY      5.0     5.4    +      -       -      -
    483B  GLY*     5.8     1.9    -      -       -      -
    486B  PRO*     6.4     2.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 476 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    369B  HIS*     5.0     1.6    +      -       -      -
    372B  VAL*     3.5    29.6    -      -       +      +
    373B  MET*     4.5    14.9    -      -       -      +
    376B  VAL*     3.9    26.2    -      -       +      +
    393B  TYR*     3.3    23.2    -      -       +      +
    472B  ILE      2.2    29.4    +      -       -      -
    473B  VAL*     3.2    13.8    +      -       -      -
    475B  THR*     1.3    78.3    -      -       -      +
    477B  MET*     1.3    66.4    +      -       -      +
    478B  PRO*     3.8     1.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 477 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172B  ILE*     4.6    11.2    -      -       -      -
    227B  ILE*     5.4     9.4    -      -       +      -
    393B  TYR*     3.8    14.1    -      -       +      -
    394B  PRO*     4.0    24.7    -      -       +      +
    397B  VAL*     4.2    18.4    -      -       +      -
    398B  THR*     4.2    20.6    -      -       -      +
    401B  ILE*     6.1     2.5    -      -       +      -
    473B  VAL*     3.4    21.2    +      -       +      +
    474B  ALA*     3.3    25.1    -      -       +      +
    475B  THR      3.9     2.3    -      -       -      +
    476B  THR*     1.3    83.8    -      -       -      +
    478B  PRO*     1.4    62.9    -      -       +      +
    479B  ILE*     2.6    42.6    +      -       +      +
    481B  CYS*     5.1     0.3    -      -       -      -
----------------------------------------------------------
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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