Contacts of the helix formed by residues 395 - 416 (chain B) in PDB entry 4BGG


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 CYS 395 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    392B  GLN*     3.0    32.4    +      -       +      +
    394B  ASP*     1.3    83.4    -      -       -      +
    396B  PHE*     1.3    66.5    -      -       -      +
    397B  ASP*     4.3     8.1    -      -       +      +
    398B  SER*     3.1    32.6    +      -       -      +
    399B  TYR*     3.6     8.9    -      -       -      -
    401B  ARG*     6.2     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 396 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    331B  ALA*     3.6    39.7    -      -       +      -
    332B  ILE      3.9     4.3    -      -       -      -
    333B  ALA*     4.0     9.4    -      -       +      -
    359B  VAL*     3.6    31.6    -      -       +      -
    361B  HIS*     3.5    44.2    -      +       +      +
    368B  LEU*     3.6    24.2    -      -       +      +
    394B  ASP      4.0     2.8    +      -       -      -
    395B  CYS*     1.3    71.4    -      -       -      +
    397B  ASP*     1.3    66.0    +      -       -      +
    399B  TYR*     3.0    18.4    +      +       -      +
    400B  LYS*     3.5    40.6    +      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 397 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    395B  CYS*     3.2     5.9    -      -       +      +
    396B  PHE*     1.3    78.4    -      -       -      +
    398B  SER*     1.3    65.2    +      -       -      +
    400B  LYS*     3.2    32.0    +      -       -      +
    401B  ARG*     3.0    57.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 398 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    385B  GLU*     4.7     1.4    -      -       -      +
    391B  ILE*     3.9    19.7    -      -       -      +
    392B  GLN*     2.9    40.3    +      -       -      +
    395B  CYS*     3.1    16.3    +      -       -      +
    397B  ASP*     1.3    77.8    -      -       -      +
    399B  TYR*     1.3    64.8    +      -       -      +
    401B  ARG*     3.5    13.8    +      -       -      +
    402B  VAL*     3.2    28.1    +      -       -      +
    482B  PRO*     6.0     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 399 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333B  ALA*     3.7    21.1    -      -       +      +
    335B  ARG*     4.0    36.2    +      -       +      +
    359B  VAL*     3.9    15.9    -      -       +      -
    368B  LEU*     4.5     5.8    -      -       +      -
    370B  VAL*     4.3    25.6    -      -       +      +
    391B  ILE*     4.3    19.7    -      -       +      -
    392B  GLN      4.9     0.4    -      -       -      -
    393B  VAL*     2.7    51.2    +      -       +      +
    395B  CYS      3.6    15.5    -      -       -      -
    396B  PHE*     3.0    14.3    +      +       +      +
    398B  SER*     1.3    75.9    -      -       -      +
    400B  LYS*     1.3    64.4    +      -       -      +
    402B  VAL*     3.4     9.2    +      -       +      +
    403B  ASP*     3.3    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 400 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    320B  HIS*     3.6    56.8    +      -       +      +
    333B  ALA*     4.5     2.0    -      -       +      -
    396B  PHE*     3.5    35.9    +      -       +      +
    397B  ASP*     3.2    34.7    +      -       -      +
    399B  TYR*     1.3    76.8    -      -       -      +
    401B  ARG*     1.3    64.6    +      -       +      +
    403B  ASP*     3.0    14.2    +      -       -      +
    404B  ILE*     3.1    18.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 401 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    385B  GLU*     4.6     0.7    -      -       -      +
    392B  GLN*     5.4     6.9    -      -       -      +
    395B  CYS*     6.2     1.0    -      -       -      +
    397B  ASP*     3.0    46.6    +      -       -      +
    398B  SER*     3.8    10.9    +      -       -      +
    399B  TYR      3.3     0.2    -      -       -      -
    400B  LYS*     1.3    76.5    -      -       +      +
    402B  VAL*     1.3    63.6    +      -       -      +
    404B  ILE*     3.3    11.1    +      -       +      +
    405B  TRP      3.1    13.9    +      -       -      -
    482B  PRO*     3.4    37.2    +      -       +      +
    483B  SER*     4.0    28.9    +      -       -      +
    485B  ARG*     3.1    31.9    +      -       +      +
    486B  LEU      5.9     0.9    -      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    335B  ARG*     5.0    15.9    -      -       +      +
    381B  TYR      5.2     1.8    -      -       -      +
    382B  MET*     6.1     0.9    -      -       -      -
    383B  ALA*     4.2    12.8    -      -       +      +
    385B  GLU*     3.8    16.8    -      -       -      +
    386B  VAL*     3.9    19.3    -      -       +      -
    391B  ILE*     3.8    21.5    -      -       +      -
    398B  SER      3.2    15.6    +      -       -      +
    399B  TYR*     3.5    13.0    -      -       +      +
    401B  ARG*     1.3    76.9    -      -       -      +
    403B  ASP*     1.3    67.5    +      -       -      +
    405B  TRP*     3.5     5.5    +      -       -      +
    406B  ALA*     3.3    19.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 403 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    316B  LEU*     3.9    11.2    -      -       +      +
    320B  HIS*     2.9    27.8    +      -       +      +
    333B  ALA*     3.5     2.4    -      -       -      -
    334B  HIS*     2.8    33.1    +      -       -      +
    335B  ARG*     2.8    30.0    +      -       -      -
    336B  ASP      4.5     0.5    +      -       -      -
    337B  LEU*     3.7    10.0    +      -       +      +
    399B  TYR      3.3    10.0    +      -       -      +
    400B  LYS      3.0    10.5    +      -       -      +
    402B  VAL*     1.3    80.6    -      -       -      +
    404B  ILE*     1.3    58.7    +      -       -      +
    406B  ALA*     3.3     6.6    +      -       -      +
    407B  PHE*     2.9    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 404 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    316B  LEU*     4.3    10.8    -      -       +      -
    320B  HIS*     4.4     3.6    -      -       +      -
    400B  LYS*     3.1    18.1    +      -       +      +
    401B  ARG*     3.6    11.9    -      -       +      +
    402B  VAL      3.2     0.2    -      -       -      -
    403B  ASP*     1.3    74.5    -      -       -      +
    405B  TRP*     1.3    66.3    +      -       -      +
    407B  PHE*     3.3     5.2    +      -       +      +
    408B  GLY      3.0    18.4    +      -       -      -
    477B  CYS*     3.5    33.0    -      -       +      +
    485B  ARG*     4.1     9.0    -      -       +      -
    486B  LEU      3.4    23.1    -      -       -      +
    487B  THR*     3.9     1.6    -      -       -      -
    488B  ALA*     3.5    39.3    -      -       +      +
    491B  ILE*     4.1     8.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 405 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    380B  ARG      5.3     0.2    +      -       -      -
    381B  TYR      3.2    23.1    +      -       -      -
    382B  MET      3.3    13.4    +      -       -      -
    383B  ALA*     3.6    19.1    -      -       +      -
    384B  PRO*     3.5    31.2    -      -       +      -
    401B  ARG      3.1    10.7    +      -       -      +
    402B  VAL      3.6     8.7    -      -       -      +
    404B  ILE*     1.3    76.4    -      -       -      +
    406B  ALA*     1.3    62.7    +      -       -      +
    408B  GLY*     3.2    11.3    +      -       -      -
    409B  LEU*     3.3    29.0    +      -       +      +
    431B  PHE*     4.6    12.5    -      +       -      -
    448B  VAL*     4.0    17.0    -      -       +      -
    453B  GLN      5.0     0.9    -      -       -      -
    454B  ARG*     3.4    33.4    -      -       -      -
    455B  PRO*     6.2     0.2    -      -       +      -
    477B  CYS      3.6    12.0    +      -       -      +
    478B  TRP*     3.4    50.1    +      +       +      -
    485B  ARG*     4.0    10.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 406 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    337B  LEU*     3.6    34.1    -      -       +      +
    381B  TYR*     4.1    17.1    -      -       +      +
    402B  VAL*     3.3     9.2    +      -       +      +
    403B  ASP*     3.3    10.1    +      -       -      +
    405B  TRP*     1.3    81.7    -      -       -      +
    407B  PHE*     1.3    66.7    +      -       -      +
    409B  LEU*     3.1    10.0    +      -       -      +
    410B  VAL*     3.1    26.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 407 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309B  VAL*     4.2     7.9    -      -       +      -
    312B  ILE*     3.5    38.6    -      -       +      -
    313B  ALA*     3.9    17.5    -      -       +      -
    316B  LEU*     4.2    14.8    -      -       +      -
    337B  LEU*     4.0    11.8    -      -       +      +
    403B  ASP      2.9    16.8    +      -       -      +
    404B  ILE*     3.5     7.4    -      -       -      +
    406B  ALA*     1.3    76.9    -      -       -      +
    408B  GLY*     1.3    64.4    +      -       -      +
    410B  VAL*     3.1     9.0    +      -       +      +
    411B  LEU*     2.9    51.8    +      -       +      +
    477B  CYS*     4.2     2.7    -      -       -      -
    491B  ILE*     3.5    47.3    -      -       +      -
    495B  LEU*     4.6     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 408 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    404B  ILE      3.0    11.3    +      -       -      -
    405B  TRP      3.2     4.4    +      -       -      -
    407B  PHE*     1.3    77.6    -      -       -      +
    409B  LEU*     1.3    60.7    +      -       -      +
    411B  LEU*     3.3    10.8    -      -       -      +
    412B  TRP      3.1    17.0    +      -       -      -
    474B  MET*     3.8     3.9    -      -       -      +
    477B  CYS*     3.8    19.3    -      -       -      -
    478B  TRP*     3.5    26.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 409 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    380B  ARG      3.9     7.6    -      -       -      +
    381B  TYR*     3.8    38.8    -      -       +      -
    405B  TRP*     3.3    36.8    +      -       +      +
    406B  ALA*     3.1     7.3    +      -       -      +
    408B  GLY*     1.3    75.7    -      -       -      +
    410B  VAL*     1.3    64.3    +      -       -      +
    412B  TRP*     3.2     7.5    +      -       -      +
    413B  GLU*     3.0    26.3    +      -       -      +
    430B  PRO*     4.0    16.6    -      -       +      -
    431B  PHE*     4.1    11.4    -      -       +      -
    455B  PRO*     3.7    30.1    -      -       +      -
    478B  TRP*     3.6    14.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 410 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291B  LEU*     4.1    17.9    -      -       +      -
    309B  VAL*     6.3     0.2    -      -       +      -
    312B  ILE*     4.2    12.1    -      -       +      -
    337B  LEU*     5.0     2.7    -      -       +      -
    338B  LYS*     4.0    18.2    -      -       -      +
    339B  SER*     4.0     5.2    -      -       -      +
    342B  ILE*     4.1    21.8    -      -       +      -
    381B  TYR*     4.0    10.8    -      -       +      -
    406B  ALA      3.1    15.9    +      -       -      +
    407B  PHE*     3.1    12.1    +      -       +      +
    409B  LEU*     1.3    72.6    -      -       -      +
    411B  LEU*     1.3    67.7    +      -       -      +
    413B  GLU*     3.1    21.5    +      -       +      +
    414B  VAL*     3.0    22.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 411 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309B  VAL*     3.5    34.8    -      -       +      -
    407B  PHE*     2.9    44.7    +      -       +      +
    408B  GLY*     3.3    12.8    -      -       -      +
    410B  VAL*     1.3    78.2    -      -       -      +
    412B  TRP*     1.3    57.0    +      -       -      +
    414B  VAL*     3.3     2.1    +      -       -      +
    415B  ALA*     2.9    32.5    +      -       -      +
    470B  LEU*     4.2    26.2    -      -       +      +
    473B  LEU*     4.2    24.5    -      -       +      -
    474B  MET*     4.0    19.3    -      -       +      +
    477B  CYS*     5.0     1.3    -      -       -      -
    495B  LEU*     5.4     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 412 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408B  GLY      3.1     6.3    +      -       -      +
    409B  LEU*     3.3     9.9    -      -       -      +
    410B  VAL      3.2     0.2    -      -       -      -
    411B  LEU*     1.3    76.5    -      -       -      +
    413B  GLU*     1.3    84.1    +      -       +      +
    414B  VAL      3.3     0.3    +      -       -      -
    415B  ALA*     3.4     2.2    +      -       -      +
    416B  ARG*     3.3    61.2    +      -       -      +
    428B  LYS      3.6    21.1    -      -       -      -
    429B  PRO      4.1     0.4    -      -       -      -
    430B  PRO*     3.7    25.1    -      -       +      -
    431B  PHE      5.0     0.9    -      -       -      -
    432B  TYR*     3.8    29.8    -      +       -      -
    455B  PRO*     3.5    26.2    -      -       +      +
    456B  ASN      3.0    28.5    +      -       -      -
    458B  PRO*     5.0     0.6    -      -       -      +
    461B  TRP*     4.0    10.9    -      +       -      -
    474B  MET*     3.3    38.5    -      -       +      -
    478B  TRP*     4.2     4.3    -      +       +      -
----------------------------------------------------------
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Residues in contact with GLU 413 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295B  LEU*     4.2     9.1    -      -       +      +
    339B  SER*     2.7    23.1    +      -       -      -
    381B  TYR*     2.4    36.3    +      -       -      -
    409B  LEU      3.0    12.6    +      -       -      +
    410B  VAL*     3.1    18.4    +      -       +      +
    412B  TRP*     1.3    85.2    -      -       +      +
    414B  VAL*     1.3    64.3    +      -       +      +
    416B  ARG*     3.6    13.1    -      -       -      +
    417B  ARG*     3.9    10.6    -      -       -      +
    427B  TYR*     2.5    37.0    +      -       +      -
    428B  LYS      4.0    11.2    -      -       -      +
    430B  PRO*     3.7    17.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 414 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291B  LEU*     3.8    28.7    -      -       +      -
    295B  LEU*     4.0    15.3    -      -       +      -
    300B  LEU*     3.8    23.0    -      -       +      +
    305B  CYS*     4.0    11.0    -      -       -      +
    308B  ILE*     4.1    16.8    -      -       +      -
    309B  VAL*     3.9    23.8    -      -       +      -
    312B  ILE*     5.2     0.2    -      -       +      -
    410B  VAL*     3.0    21.5    +      -       +      +
    411B  LEU      3.8     3.6    -      -       -      +
    413B  GLU*     1.3    76.1    -      -       +      +
    415B  ALA*     1.3    59.6    +      -       -      +
    417B  ARG*     2.9    25.5    +      -       -      +
    418B  MET*     3.7     3.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 415 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305B  CYS*     4.5     9.6    -      -       -      -
    309B  VAL*     5.8     0.2    -      -       -      +
    411B  LEU      2.9    16.7    +      -       -      +
    412B  TRP      3.4     0.6    +      -       -      +
    414B  VAL*     1.3    74.7    -      -       -      +
    416B  ARG*     1.3    66.2    +      -       -      +
    418B  MET*     3.0    17.7    +      -       -      +
    460B  ARG*     3.8     5.2    +      -       -      -
    461B  TRP*     3.7    25.3    -      -       +      -
    467B  LEU*     3.6    25.0    -      -       +      +
    470B  LEU*     4.3    16.6    -      -       +      -
    474B  MET*     5.1     1.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 416 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    412B  TRP*     3.3    55.6    +      -       +      +
    413B  GLU      3.6    11.7    -      -       -      +
    415B  ALA*     1.3    76.9    -      -       -      +
    417B  ARG*     1.3    60.3    +      -       +      +
    418B  MET      3.3     0.4    -      -       -      -
    424B  VAL*     3.4     0.9    -      -       -      +
    425B  GLU*     3.2    64.5    +      -       +      +
    426B  ASP*     2.9    31.8    +      -       -      +
    427B  TYR*     5.9     0.4    -      -       -      -
    428B  LYS*     3.4    31.7    -      -       -      +
    432B  TYR*     4.1    15.0    +      -       -      -
    456B  ASN      5.5     0.8    +      -       -      -
    458B  PRO*     5.1     6.4    -      -       +      +
    460B  ARG*     3.3     4.7    +      -       -      -
    461B  TRP*     3.7    13.8    -      -       +      -
----------------------------------------------------------
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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