Contacts of the helix formed by residues 352 - 378 (chain A) in PDB entry 5WJ9


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 352 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  PHE*     5.9     7.2    -      -       +      -
     49A  PHE*     6.2     4.3    -      -       +      -
    320A  LEU*     6.0     0.2    -      -       -      +
    350A  PHE      3.6     5.0    +      -       -      +
    351A  VAL*     1.3    79.4    -      -       -      +
    353A  GLY*     1.3    72.3    +      -       -      +
    354A  TRP*     3.4    34.5    -      -       -      +
    355A  TYR*     3.4    35.2    +      -       +      +
    356A  ILE*     3.5     6.3    +      -       -      +
    403A  ARG*     3.4    27.6    -      -       -      +
    419A  ARG*     5.3     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 353 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    351A  VAL      3.5     4.7    +      -       -      -
    352A  ASN*     1.3    74.9    +      -       -      +
    354A  TRP*     1.3    60.1    +      -       -      +
    356A  ILE*     2.8    33.6    +      -       -      +
    357A  LEU*     2.8    15.0    +      -       -      +
    419A  ARG*     4.9    10.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 354 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    352A  ASN*     3.4    35.8    -      -       -      +
    353A  GLY*     1.3    74.5    -      -       -      +
    355A  TYR*     1.3    52.1    +      -       -      +
    357A  LEU*     3.5    19.2    +      -       +      +
    358A  LEU*     2.8    36.3    +      -       -      +
    399A  VAL      5.0     7.2    +      -       -      -
    400A  GLY*     5.8     1.6    -      -       -      -
    402A  ILE*     4.5    16.2    -      -       +      +
    403A  ARG*     3.3    45.8    -      -       +      +
    412A  ASN*     5.7     7.4    -      -       -      -
    415A  ILE*     4.5    21.1    -      -       +      +
    416A  ALA*     6.0     3.4    -      -       +      -
    419A  ARG*     3.3    43.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 355 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  PHE*     5.9     7.2    -      +       -      -
     55A  LYS*     5.7     3.1    +      -       -      -
     65A  LYS*     3.4    35.5    +      -       -      +
    315A  LEU      5.3     0.7    -      -       -      -
    316A  CYS*     3.7    22.3    -      -       +      -
    319A  SER*     3.4    36.3    -      -       -      +
    320A  LEU*     5.7     7.0    -      -       +      -
    351A  VAL*     6.2     0.7    -      -       +      -
    352A  ASN*     3.4    23.4    +      -       +      +
    353A  GLY      3.2     0.4    -      -       -      -
    354A  TRP*     1.3    75.5    -      -       -      +
    356A  ILE*     1.3    54.4    -      -       -      +
    358A  LEU*     3.2    11.7    +      -       +      +
    359A  VAL*     2.8    38.7    +      -       -      +
    403A  ARG*     3.3    35.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 356 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    320A  LEU*     5.6    15.4    -      -       +      +
    351A  VAL*     6.2     3.1    -      -       +      -
    352A  ASN      3.5     5.8    +      -       -      +
    353A  GLY*     2.8    28.5    +      -       -      +
    355A  TYR*     1.3    75.6    -      -       -      +
    357A  LEU*     1.3    52.5    +      -       +      +
    359A  VAL*     3.5    11.4    +      -       +      +
    360A  THR*     2.7    38.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 357 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    353A  GLY      2.8    15.0    +      -       -      +
    354A  TRP*     3.6    21.1    -      -       +      +
    356A  ILE*     1.3    73.5    -      -       +      +
    358A  LEU*     1.3    57.9    +      -       -      +
    360A  THR*     3.3     7.9    +      -       -      -
    361A  SER*     2.8    35.2    +      -       -      +
    396A  LEU*     3.6    51.5    -      -       +      +
    399A  VAL*     4.2    11.2    -      -       +      -
    400A  GLY*     5.5     3.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 358 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65A  LYS*     5.2     7.2    -      -       -      +
     69A  GLN*     3.2    45.8    -      -       +      +
     72A  LYS*     4.2    15.9    +      -       -      +
    312A  SER*     4.8     7.0    -      -       -      +
    316A  CYS*     5.5     2.2    -      -       +      -
    354A  TRP      2.8    23.0    +      -       -      +
    355A  TYR*     3.2    14.6    +      -       +      +
    357A  LEU*     1.3    76.6    -      -       -      +
    359A  VAL*     1.3    63.4    -      -       +      +
    361A  SER*     2.6    21.0    +      -       -      +
    362A  ASP*     2.8    15.7    +      -       +      +
    396A  LEU      5.8     0.2    -      -       -      -
    397A  VAL*     6.2     2.9    -      -       +      -
    400A  GLY*     5.3    15.5    -      -       -      +
    403A  ARG*     5.7     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 359 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312A  SER      4.9     0.4    -      -       -      +
    313A  PHE*     3.7    34.3    -      -       +      -
    316A  CYS*     3.1    41.5    -      -       +      -
    320A  LEU*     4.7    12.6    -      -       +      -
    355A  TYR      2.8    23.4    +      -       -      +
    356A  ILE*     3.8    15.5    -      -       +      +
    357A  LEU      3.3     0.2    -      -       -      -
    358A  LEU*     1.3    75.9    -      -       +      +
    360A  THR*     1.3    63.6    +      -       -      +
    362A  ASP*     3.2    10.1    +      -       +      +
    363A  VAL*     3.0    25.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 360 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    356A  ILE*     2.7    24.7    +      -       -      +
    357A  LEU*     3.3    11.8    +      -       -      -
    359A  VAL*     1.3    76.2    -      -       -      +
    361A  SER*     1.3    61.5    +      -       -      +
    363A  VAL*     3.4     7.3    +      -       -      +
    364A  LEU*     3.3    32.1    +      -       +      +
    396A  LEU*     5.0     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 361 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  LYS*     5.5     0.2    +      -       -      -
    357A  LEU      2.8    17.4    +      -       -      -
    358A  LEU*     2.6    27.4    +      -       -      +
    360A  THR*     1.3    71.1    -      -       -      +
    362A  ASP*     1.3    55.4    +      -       -      -
    364A  LEU*     3.5     7.4    +      -       -      +
    365A  THR*     2.6    32.4    +      -       -      -
    393A  SER*     3.6    12.1    +      -       -      +
    396A  LEU*     3.5    38.2    +      -       -      +
    397A  VAL*     4.2    11.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 362 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  LYS*     3.8    18.3    -      -       -      +
    309A  CYS*     3.2    28.1    -      -       -      +
    310A  SER*     4.3     1.0    +      -       -      -
    312A  SER*     4.9     0.9    -      -       -      +
    313A  PHE*     3.3    36.2    -      -       +      +
    358A  LEU*     2.8    18.9    +      -       +      +
    359A  VAL*     3.2    13.3    +      -       +      +
    361A  SER*     1.3    72.4    -      -       -      +
    363A  VAL*     1.3    64.3    +      -       -      +
    365A  THR*     2.8    12.7    +      -       -      -
    366A  ILE*     2.8    41.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 363 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313A  PHE*     5.2     8.1    -      -       +      -
    359A  VAL      3.0    16.8    +      -       -      +
    360A  THR*     3.4     9.8    +      -       +      +
    362A  ASP*     1.3    85.7    +      -       -      +
    364A  LEU*     1.3    61.6    +      -       +      +
    366A  ILE*     3.4     9.2    -      -       +      +
    367A  SER*     2.8    42.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 364 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    360A  THR*     3.3    20.7    +      -       +      +
    361A  SER      3.6     8.3    -      -       -      +
    362A  ASP      3.2     0.6    -      -       -      -
    363A  VAL*     1.3    85.0    -      -       +      +
    365A  THR*     1.3    59.4    +      -       -      +
    367A  SER*     4.4     4.3    -      -       -      -
    368A  GLY*     2.8    25.6    +      -       -      -
    389A  LEU*     3.7    38.5    -      -       +      +
    392A  THR*     3.5    38.1    -      -       +      -
    393A  SER*     3.8     7.6    -      -       -      +
    396A  LEU*     4.2    12.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 365 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  LYS*     4.6     0.2    +      -       -      -
     76A  VAL*     3.5    21.8    -      -       +      -
     79A  GLN*     6.1     0.4    -      -       +      -
    305A  VAL*     3.8     9.9    -      -       +      -
    309A  CYS*     3.4    27.8    -      -       -      -
    361A  SER      2.6    20.3    +      -       -      -
    362A  ASP*     2.8    13.2    +      -       -      -
    364A  LEU*     1.3    70.1    -      -       -      +
    366A  ILE*     1.3    53.6    +      -       -      -
    368A  GLY*     3.2     1.7    +      -       -      -
    369A  THR*     2.8    39.3    +      -       -      +
    390A  LEU*     3.7    10.2    -      -       +      +
    393A  SER*     2.6    27.0    +      -       -      +
    397A  VAL*     4.5     5.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 366 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306A  ILE*     3.9    42.6    -      -       +      +
    309A  CYS*     4.7     5.4    -      -       +      -
    310A  SER*     4.6    12.6    -      -       -      +
    362A  ASP*     2.8    31.1    +      -       -      +
    363A  VAL*     3.4    17.5    -      -       +      +
    365A  THR*     1.3    70.2    -      -       -      +
    367A  SER*     1.3    65.4    +      -       -      +
    369A  THR*     3.0    17.0    +      -       -      -
    370A  ILE*     3.3    20.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 367 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    363A  VAL*     2.8    29.8    +      -       -      -
    364A  LEU*     4.1     5.2    -      -       -      -
    366A  ILE*     1.3    71.0    -      -       -      +
    368A  GLY*     1.3    65.1    +      -       -      +
    370A  ILE*     3.1    27.3    -      -       -      +
    371A  MET*     3.2    17.0    +      -       -      +
    389A  LEU*     3.7    19.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 368 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    364A  LEU      2.8    20.3    +      -       -      -
    365A  THR      3.2     1.5    +      -       -      -
    367A  SER*     1.3    75.5    -      -       -      +
    369A  THR*     1.3    51.2    +      -       -      +
    371A  MET*     2.8     9.5    +      -       -      +
    372A  LYS*     2.8    32.3    +      -       -      +
    386A  CYS*     3.8     2.7    -      -       -      -
    389A  LEU*     4.2    13.8    -      -       -      +
    390A  LEU*     3.6    22.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 369 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79A  GLN*     3.5    26.2    -      -       +      +
    302A  ASP*     4.2    10.5    -      -       -      +
    305A  VAL*     3.5    30.1    -      -       +      -
    306A  ILE*     3.2    28.5    -      -       -      +
    365A  THR      2.8    20.1    +      -       -      +
    366A  ILE*     3.0    17.5    +      -       -      -
    368A  GLY*     1.3    70.1    -      -       -      +
    370A  ILE*     1.3    56.2    +      -       -      +
    372A  LYS*     3.2     8.3    +      -       -      +
    373A  ILE*     2.8    30.7    +      -       -      +
    390A  LEU*     3.8     3.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 370 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306A  ILE*     4.5    15.0    -      -       +      -
    366A  ILE*     3.4    17.0    -      -       +      +
    367A  SER*     3.1    26.2    -      -       -      +
    369A  THR*     1.3    78.2    +      -       -      +
    371A  MET*     1.3    58.8    +      -       +      +
    373A  ILE*     3.1    14.3    -      -       +      +
    374A  GLY*     3.1    22.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 371 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    367A  SER*     3.2    24.2    +      -       -      +
    368A  GLY*     2.8    12.4    +      -       -      +
    370A  ILE*     1.3    78.0    -      -       +      +
    372A  LYS*     1.3    52.9    +      -       -      +
    375A  ILE*     2.8    37.6    +      -       -      +
    380A  LEU*     3.6    26.8    -      -       +      +
    382A  SER*     3.5    27.6    -      -       -      +
    385A  VAL*     3.7    29.6    -      -       +      -
    386A  CYS*     4.1    17.0    -      -       +      +
    389A  LEU*     4.1     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 372 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79A  GLN*     3.1    43.2    -      -       -      +
     82A  LEU*     5.2     1.0    -      -       -      +
     83A  PHE*     3.8    25.9    -      -       +      +
    298A  ARG*     3.2    46.1    -      -       -      +
    302A  ASP*     3.9    18.6    -      -       +      +
    368A  GLY      2.8    11.5    +      -       -      +
    369A  THR*     3.5    10.5    -      -       -      +
    371A  MET*     1.3    74.3    -      -       -      +
    373A  ILE*     1.3    61.4    +      -       -      +
    375A  ILE*     3.4     8.0    -      -       +      +
    376A  GLU*     2.8    48.2    +      -       +      +
    386A  CYS*     4.0     8.7    -      -       -      -
    390A  LEU*     4.7     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 373 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299A  LEU*     4.3    26.2    -      -       +      +
    302A  ASP*     3.2    36.7    +      -       -      +
    303A  VAL*     5.7     2.2    -      -       +      -
    306A  ILE*     6.3     2.5    -      -       +      -
    369A  THR      2.8    15.1    +      -       -      +
    370A  ILE*     3.1    27.6    -      -       +      +
    372A  LYS*     1.3    72.0    -      -       -      +
    374A  GLY*     1.3    58.8    +      -       -      +
    376A  GLU*     4.8     5.6    -      -       -      +
    377A  ALA*     2.8    47.6    +      -       +      +
    378A  LYS*     4.4     0.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 374 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    370A  ILE      3.1     9.3    +      -       -      -
    371A  MET      3.7     3.4    -      -       -      -
    373A  ILE*     1.3    86.0    -      -       -      +
    375A  ILE*     1.3    56.6    +      -       -      +
    378A  LYS*     2.8    48.4    +      -       -      +
    380A  LEU*     3.6    14.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 375 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  PHE*     4.3    15.9    -      -       +      -
    371A  MET      2.8    23.9    +      -       -      +
    372A  LYS*     3.4    13.7    -      -       +      +
    374A  GLY*     1.3    72.9    -      -       -      +
    376A  GLU*     1.3    68.1    +      -       +      +
    378A  LYS      3.9     3.1    -      -       -      +
    380A  LEU*     3.5    32.7    -      -       +      +
    381A  ALA*     4.0     3.4    -      -       -      -
    382A  SER      3.5    22.0    -      -       -      +
    383A  TYR*     3.4    63.0    +      -       +      +
    386A  CYS*     5.1     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 376 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86A  SER*     6.1     1.1    -      -       -      +
    249A  GLU*     3.0    54.9    -      -       +      +
    294A  ASP*     5.2     5.1    -      -       -      +
    295A  ASN*     5.1    10.7    -      -       -      +
    298A  ARG*     4.0    45.6    +      -       -      +
    299A  LEU*     5.3     2.8    +      -       -      +
    302A  ASP*     5.7     0.7    -      -       -      +
    372A  LYS*     2.8    32.7    +      -       +      +
    373A  ILE*     4.2     6.9    -      -       -      +
    375A  ILE*     1.3    79.5    -      -       +      +
    377A  ALA*     1.3    72.2    +      -       -      +
    378A  LYS      3.6     1.8    +      -       -      +
    383A  TYR*     6.0     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 377 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249A  GLU*     4.5     3.6    -      -       -      -
    283A  GLU*     5.6     3.6    -      -       -      -
    295A  ASN*     4.8    11.7    -      -       -      +
    299A  LEU*     6.4     2.0    -      -       +      -
    373A  ILE*     2.8    28.7    +      -       +      +
    376A  GLU*     1.3    88.8    -      -       -      +
    378A  LYS*     1.3    63.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 378 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283A  GLU*     5.4     8.2    +      -       -      -
    373A  ILE      4.4     0.4    -      -       -      +
    374A  GLY*     2.8    34.5    +      -       -      +
    375A  ILE      3.9     4.9    -      -       -      +
    376A  GLU      3.6     2.1    +      -       -      +
    377A  ALA*     1.3    77.9    -      -       -      +
    379A  ASN*     1.3    90.1    +      -       -      +
    380A  LEU*     3.0    10.3    +      -       +      +
----------------------------------------------------------
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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