Contacts of the helix formed by residues 390 - 415 (chain B) in PDB entry 3SV1


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 390 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    389B  PRO*     1.3    78.6    -      -       -      +
    391B  LYS*     1.3    54.7    +      -       -      +
    392B  ASN*     2.8    21.7    -      -       -      +
    393B  ILE*     2.6    44.0    +      -       -      +
    394B  ARG*     2.8     6.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 391 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    389B  PRO      4.1     1.0    +      -       -      -
    390B  SER*     1.3    71.0    -      -       -      +
    392B  ASN*     1.3    55.3    +      -       -      +
    393B  ILE      3.0     2.2    -      -       -      -
    394B  ARG*     3.9    12.6    -      -       +      -
    395B  MET*     2.8    30.0    -      -       -      +
    460B  TYR*     5.3     8.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 392 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    390B  SER*     2.8    15.4    -      -       -      +
    391B  LYS*     1.3    78.4    -      -       -      +
    393B  ILE*     1.3    56.9    +      -       +      +
    395B  MET*     3.1    25.0    -      -       -      +
    396B  MET*     3.5     8.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 393 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    386B  GLU*     3.1    28.5    -      -       -      +
    389B  PRO*     3.1    25.8    -      -       +      -
    390B  SER*     2.6    34.7    +      -       -      +
    392B  ASN*     1.3    80.4    -      -       +      +
    394B  ARG*     1.3    53.0    +      -       -      +
    395B  MET      2.8     4.7    -      -       -      -
    396B  MET*     2.6    31.0    +      -       +      +
    397B  GLN*     2.6    46.4    +      -       +      +
    496B  LYS*     4.9     4.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 394 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    385B  SER*     5.3     4.8    +      -       -      -
    387B  ARG      5.2     0.4    +      -       -      -
    388B  ASN*     4.6    16.4    -      -       -      +
    389B  PRO*     4.0    26.3    -      -       +      +
    390B  SER      2.8    19.3    +      -       -      +
    391B  LYS*     4.1     5.6    -      -       -      -
    393B  ILE*     1.3    72.1    -      -       -      +
    395B  MET*     1.3    60.9    +      -       -      +
    397B  GLN*     2.9    30.1    +      -       -      +
    398B  ALA*     3.2    22.5    +      -       -      +
    459B  SER*     2.4    48.3    +      -       -      -
    460B  TYR*     3.3    40.4    -      -       +      +
    471B  MET*     4.8    10.8    -      -       -      +
    500B  MET*     4.6     6.3    -      -       -      +
    758E  GLU*     5.1     4.9    -      -       -      +
    762E  TYR*     4.1    15.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 395 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    391B  LYS      2.8    26.7    +      -       -      +
    392B  ASN*     3.1    21.3    -      -       -      +
    393B  ILE      2.8     0.2    -      -       -      -
    394B  ARG*     1.3    79.2    -      -       -      +
    396B  MET*     1.3    69.3    +      -       -      +
    398B  ALA*     3.3     3.4    +      -       -      +
    399B  GLN*     2.7    83.2    +      -       +      +
    460B  TYR*     3.6    17.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 396 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    383B  LEU*     6.1     0.4    -      -       +      -
    392B  ASN      3.5     6.7    -      -       -      +
    393B  ILE*     2.6    42.2    +      -       +      +
    395B  MET*     1.3    88.1    -      -       -      +
    397B  GLN*     1.3    92.9    +      -       +      +
    399B  GLN*     3.2    10.3    +      -       -      +
    400B  GLU*     3.1    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 397 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    383B  LEU*     3.7    24.6    -      -       +      +
    384B  LEU      4.0    10.7    +      -       -      -
    385B  SER*     2.9    32.6    +      -       -      +
    386B  GLU*     4.2     6.1    +      -       -      -
    389B  PRO*     4.3     3.5    -      -       -      +
    393B  ILE*     2.6    27.1    +      -       +      +
    394B  ARG*     2.9    39.7    +      -       -      +
    396B  MET*     1.3    91.5    -      -       +      +
    398B  ALA*     1.3    65.4    +      -       -      +
    400B  GLU*     2.8     6.5    +      -       -      +
    401B  ALA*     2.8    25.8    +      -       -      +
    471B  MET*     4.4     9.0    -      -       -      +
    496B  LYS*     5.6     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 398 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    394B  ARG      3.2    12.9    +      -       -      +
    395B  MET*     3.5     8.5    -      -       -      +
    397B  GLN*     1.3    78.1    -      -       -      +
    399B  GLN*     1.3    56.0    +      -       +      +
    400B  GLU      2.7    12.3    +      -       -      -
    401B  ALA*     3.1     3.4    +      -       -      +
    402B  VAL*     3.1    23.0    +      -       -      +
    460B  TYR*     4.0    20.0    -      -       +      +
    462B  ALA*     4.7     5.8    -      -       +      -
    464B  ILE*     6.4     0.2    -      -       +      -
    469B  VAL*     4.3    29.8    -      -       +      +
    471B  MET*     4.9     2.8    -      -       -      -
    502B  CYS*     5.1     3.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 399 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    395B  MET*     2.7    62.7    +      -       +      +
    396B  MET*     3.3    11.1    -      -       -      +
    398B  ALA*     1.3    70.8    -      -       -      +
    400B  GLU*     1.3    57.3    +      -       -      +
    402B  VAL*     2.8    21.9    -      -       -      +
    403B  SER*     3.8     6.6    +      -       -      -
    464B  ILE*     6.5     1.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 400 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    383B  LEU*     6.0     1.6    -      -       +      -
    396B  MET*     3.1    19.7    +      -       -      +
    397B  GLN*     2.8    10.7    +      -       -      +
    398B  ALA      2.7     4.0    +      -       -      -
    399B  GLN*     1.3    72.9    -      -       +      +
    401B  ALA*     1.3    54.7    +      -       -      +
    402B  VAL      2.5     6.0    +      -       -      -
    403B  SER*     2.4    34.5    +      -       -      -
    404B  ARG*     2.8    14.5    +      -       -      +
    407B  ARG*     3.2    32.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 401 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    381B  THR*     3.1    39.8    -      -       +      +
    383B  LEU*     4.6     7.7    -      -       +      +
    397B  GLN      2.8    16.3    +      -       -      +
    398B  ALA*     3.7     4.0    -      -       -      +
    400B  GLU*     1.3    72.1    -      -       -      +
    402B  VAL*     1.3    62.6    +      -       -      +
    404B  ARG*     3.3     5.3    -      -       -      +
    405B  VAL*     3.2    13.2    +      -       -      +
    469B  VAL*     4.8     1.8    -      -       +      -
    502B  CYS*     3.5    30.7    -      -       +      -
    504B  VAL*     4.0     1.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 402 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398B  ALA      3.1     8.9    +      -       -      +
    399B  GLN*     2.8    31.6    -      -       -      +
    400B  GLU      2.5     4.8    +      -       -      -
    401B  ALA*     1.3    74.4    -      -       -      +
    403B  SER*     1.3    65.8    +      -       -      +
    405B  VAL*     2.8    10.2    +      -       -      +
    406B  LYS*     2.6    57.8    +      -       +      -
    467B  ILE*     4.3    14.1    -      -       +      -
    469B  VAL*     4.3    13.0    -      -       +      -
    504B  VAL*     3.9    26.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 403 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    399B  GLN      3.8     9.4    +      -       -      -
    400B  GLU*     2.4    27.9    +      -       -      -
    402B  VAL*     1.3    74.1    -      -       -      +
    404B  ARG*     1.3    69.3    +      -       -      +
    406B  LYS*     4.2    10.8    -      -       -      +
    407B  ARG*     2.7    58.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 404 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    380B  SER      4.0    12.8    +      -       -      -
    381B  THR*     3.0    28.9    +      -       -      +
    400B  GLU*     2.8    11.0    +      -       -      +
    401B  ALA*     3.3    14.4    -      -       -      +
    403B  SER*     1.3    77.9    -      -       -      +
    405B  VAL*     1.3    53.0    +      -       -      +
    407B  ARG*     4.4     3.6    -      -       -      +
    408B  MET*     2.6    71.3    +      -       -      +
    372C  ILE*     3.4    23.3    -      -       -      +
    374C  ALA*     5.5     1.6    -      -       -      +
    431C  ASP*     3.1    28.3    +      -       -      -
    444C  ALA*     5.0     5.9    +      -       -      +
    447C  GLN*     2.7    36.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 405 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    378B  LEU*     3.7    17.5    -      -       +      -
    379B  GLY*     3.3    30.1    -      -       -      +
    380B  SER*     2.7    46.2    -      -       -      +
    401B  ALA      3.2     9.2    +      -       -      +
    402B  VAL      2.8    11.4    +      -       -      +
    404B  ARG*     1.3    74.4    -      -       -      +
    406B  LYS*     1.3    56.8    +      -       -      +
    408B  MET*     2.9    20.6    +      -       -      +
    409B  GLN*     2.7    31.8    +      -       +      +
    504B  VAL*     3.9    12.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 406 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    378B  LEU*     4.6    23.2    -      -       +      +
    402B  VAL*     2.6    43.1    +      -       +      +
    403B  SER*     4.2     8.3    -      -       -      +
    405B  VAL*     1.3    73.1    -      -       +      +
    407B  ARG*     1.3    60.2    +      -       +      +
    409B  GLN*     3.1     9.6    +      -       -      +
    410B  LYS*     3.0    29.4    +      -       -      +
    413B  LYS*     6.2     0.4    -      -       -      +
    467B  ILE*     4.8    11.9    -      -       +      +
    504B  VAL*     5.5     0.2    -      -       +      -
    506B  GLU*     5.4     3.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 407 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    400B  GLU*     3.2    35.6    +      -       -      -
    403B  SER*     2.7    47.2    +      -       -      +
    404B  ARG*     4.4     1.0    -      -       -      +
    406B  LYS*     1.3    69.6    -      -       +      +
    408B  MET*     1.3    62.9    +      -       -      +
    409B  GLN      2.9     5.9    +      -       -      -
    410B  LYS*     3.0    17.5    +      -       -      +
    411B  ALA      3.3     7.8    +      -       -      -
    369C  ASP*     3.6    33.9    +      -       -      +
    370C  GLY      3.3    26.0    -      -       -      +
    371C  ILE*     3.8     0.7    -      -       -      -
    372C  ILE*     3.4    33.2    +      -       +      +
    433C  PHE*     3.9    17.4    -      -       -      -
    440C  LYS*     6.2     0.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 408 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    378B  LEU      3.8    15.9    -      -       -      +
    379B  GLY*     4.9     4.5    -      -       -      -
    380B  SER      5.8     0.2    -      -       -      +
    404B  ARG*     2.6    46.5    +      -       -      +
    405B  VAL*     2.9    30.0    +      -       -      +
    407B  ARG*     1.3    71.6    -      -       -      +
    409B  GLN*     1.3    75.6    +      -       +      +
    411B  ALA*     3.9     5.1    -      -       -      +
    412B  ALA*     3.3    24.4    +      -       +      +
    426B  THR      5.5     1.1    -      -       -      +
    372C  ILE*     3.5    21.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 409 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    378B  LEU*     3.3    28.2    -      -       +      +
    405B  VAL*     2.7    13.0    +      -       +      +
    406B  LYS*     3.2    11.9    -      -       -      +
    407B  ARG      2.9     0.4    -      -       -      -
    408B  MET*     1.3    97.2    -      -       +      +
    410B  LYS*     1.3    59.6    +      -       -      +
    411B  ALA      3.0     1.3    -      -       -      -
    412B  ALA*     2.7    23.4    +      -       -      +
    413B  LYS*     2.9    43.2    +      -       -      +
    426B  THR*     2.7    48.5    -      -       -      +
    427B  LEU*     3.9     5.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 410 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    406B  LYS      3.0    19.0    +      -       -      +
    407B  ARG*     3.0     6.0    +      -       +      +
    409B  GLN*     1.3    74.3    -      -       -      +
    411B  ALA*     1.3    62.8    +      -       -      +
    413B  LYS*     3.5    13.8    +      -       +      +
    414B  ILE*     3.1    28.2    +      -       -      +
    365C  GLU      4.4     0.6    +      -       -      -
    366C  ASP*     2.7    69.8    +      -       -      +
    369C  ASP*     3.2    31.8    +      -       -      +
    370C  GLY      4.3     2.6    -      -       -      +
    371C  ILE*     3.2    17.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 411 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    407B  ARG      3.3     2.7    +      -       -      +
    408B  MET      3.9     3.6    -      -       -      +
    409B  GLN      3.0     0.6    -      -       -      -
    410B  LYS*     1.3    79.2    -      -       -      +
    412B  ALA*     1.3    65.8    +      -       -      +
    414B  ILE*     3.4     9.2    +      -       -      +
    415B  LYS*     3.2    19.1    +      -       -      +
    371C  ILE*     3.9    20.8    -      -       +      +
    372C  ILE      3.8    26.7    -      -       -      +
    373C  PHE*     4.1    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 412 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408B  MET*     3.3    13.8    +      -       +      +
    409B  GLN*     2.7    28.5    +      -       +      +
    411B  ALA*     1.3    76.0    -      -       -      +
    413B  LYS*     1.3    56.0    +      -       -      +
    415B  LYS*     2.7    32.4    +      -       -      +
    416B  LYS*     3.5     4.9    +      -       -      +
    426B  THR*     4.0    22.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 413 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    406B  LYS*     6.2     0.2    -      -       -      +
    409B  GLN*     2.9    43.5    +      -       -      +
    410B  LYS*     3.9    12.8    -      -       +      +
    412B  ALA*     1.3    72.7    -      -       -      +
    414B  ILE*     1.3    62.4    +      -       +      +
    416B  LYS*     3.1    19.3    +      -       -      +
    417B  LYS*     3.4     8.8    +      -       -      +
    425B  GLN*     6.3     0.7    -      -       -      -
    426B  THR*     4.6    12.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 414 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    410B  LYS      3.1    19.5    +      -       -      +
    411B  ALA*     3.6     6.5    -      -       -      +
    412B  ALA      3.0     0.4    +      -       -      -
    413B  LYS*     1.3    74.9    -      -       +      +
    415B  LYS*     1.3    56.0    +      -       -      +
    416B  LYS      3.0     5.6    -      -       -      -
    417B  LYS*     3.1    32.1    +      -       +      +
    418B  ALA*     4.0     2.4    +      -       -      +
    366C  ASP*     4.5    20.4    -      -       +      +
    367C  LEU*     6.0     2.0    -      -       +      -
    371C  ILE*     4.1    25.8    -      -       +      -
    373C  PHE*     5.0    12.6    -      -       +      -
    512C  LEU*     6.0     4.0    -      -       +      -
    516C  SER*     6.4     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 415 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    411B  ALA      3.2    10.0    +      -       -      +
    412B  ALA*     2.7    18.7    +      -       -      +
    414B  ILE*     1.3    71.7    -      -       -      +
    416B  LYS*     1.3    55.7    +      -       -      +
    417B  LYS      3.4     1.6    -      -       -      -
    418B  ALA*     4.2    15.3    +      -       -      +
    419B  ASN*     5.2     0.5    -      -       -      +
    373C  PHE*     5.3     7.9    -      -       +      -
    509C  ASP*     5.4     9.6    -      -       +      +
    512C  LEU*     5.8    11.0    -      -       +      -
----------------------------------------------------------
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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