Contacts of the helix formed by residues 395 - 416 (chain C) 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 C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    392A  GLN*     5.1     0.2    -      -       -      -
    394A  ASP      4.0    11.9    +      -       -      +
    395A  CYS*     2.1    49.4    -      -       +      -
    392C  GLN*     3.0    15.3    +      -       +      +
    393C  VAL      3.4     0.6    -      -       -      -
    394C  ASP*     1.3    78.3    -      -       -      +
    396C  PHE*     1.3    66.2    +      -       -      +
    397C  ASP*     3.6    15.9    -      -       -      -
    398C  SER*     3.2    35.1    +      -       -      +
    399C  TYR*     3.6     8.8    -      -       -      -
    401C  ARG*     5.1     4.3    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 396 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    392A  GLN*     3.9    19.3    +      -       -      +
    331C  ALA*     3.6    40.2    -      -       +      -
    332C  ILE      3.9     1.8    -      -       -      -
    333C  ALA*     3.9    12.3    -      -       +      -
    359C  VAL*     3.6    37.0    -      -       +      -
    360C  MET      4.4     1.8    -      -       -      -
    361C  HIS*     3.5    40.6    -      +       +      +
    394C  ASP      4.0     2.4    +      -       -      -
    395C  CYS*     1.3    73.3    -      -       -      +
    397C  ASP*     1.3    63.3    +      -       +      +
    399C  TYR*     3.0    18.2    +      +       -      +
    400C  LYS*     3.5    40.0    +      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 397 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    392A  GLN*     4.8     6.4    +      -       -      +
    395A  CYS*     4.6     3.7    -      -       -      -
    401A  ARG*     5.7     5.2    -      -       -      +
    395C  CYS*     3.3    10.8    -      -       -      -
    396C  PHE*     1.3    79.2    -      -       -      +
    398C  SER*     1.3    62.2    +      -       -      +
    400C  LYS*     3.2    23.6    +      -       -      +
    401C  ARG*     3.1    54.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 398 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    385C  GLU*     4.7     1.6    -      -       -      +
    391C  ILE*     3.9    19.9    -      -       -      +
    392C  GLN*     2.9    39.4    +      -       -      +
    395C  CYS*     3.2    17.8    +      -       -      +
    396C  PHE      3.1     0.2    -      -       -      -
    397C  ASP*     1.3    78.8    -      -       -      +
    399C  TYR*     1.3    62.3    +      -       -      +
    401C  ARG*     3.4    13.6    +      -       -      +
    402C  VAL*     3.2    27.5    +      -       -      +
    482C  PRO*     6.0     1.3    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 399 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333C  ALA*     3.7    19.7    -      -       +      +
    335C  ARG*     4.0    37.2    +      -       +      +
    359C  VAL*     4.0    17.9    -      -       +      -
    370C  VAL*     5.1    15.3    -      -       +      +
    391C  ILE*     4.3    19.5    -      -       +      -
    392C  GLN      4.8     0.7    -      -       -      -
    393C  VAL*     2.7    44.4    +      -       +      +
    394C  ASP      5.4     0.2    -      -       -      -
    395C  CYS      3.6    17.7    -      -       -      -
    396C  PHE*     3.0    16.3    +      +       +      +
    398C  SER*     1.3    74.8    -      -       -      +
    400C  LYS*     1.3    65.3    +      -       -      +
    402C  VAL*     3.4    10.0    +      -       +      +
    403C  ASP*     3.3    23.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 400 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    483A  SER*     5.8     1.8    +      -       -      -
    320C  HIS*     3.6    57.1    +      -       +      +
    331C  ALA*     5.5     0.6    -      -       -      +
    333C  ALA*     4.4     2.0    -      -       +      -
    396C  PHE*     3.5    41.5    +      -       +      +
    397C  ASP*     3.2    21.2    +      -       -      +
    399C  TYR*     1.3    78.2    -      -       -      +
    401C  ARG*     1.3    59.8    +      -       +      +
    403C  ASP*     3.0    17.0    +      -       -      +
    404C  ILE*     3.1    19.0    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 401 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    397A  ASP*     2.9    31.3    +      -       -      +
    401A  ARG*     3.6    18.8    -      -       -      +
    385C  GLU*     4.6     0.4    -      -       -      +
    392C  GLN*     5.2     7.3    -      -       -      +
    395C  CYS*     5.1     5.1    -      -       -      -
    397C  ASP*     3.1    39.9    +      -       -      +
    398C  SER*     3.8     9.6    +      -       -      +
    399C  TYR      3.2     0.2    -      -       -      -
    400C  LYS*     1.3    76.0    -      -       +      +
    402C  VAL*     1.3    65.5    +      -       -      +
    404C  ILE*     3.3    10.6    +      -       +      +
    405C  TRP      3.1    14.7    +      -       -      -
    482C  PRO*     3.4    36.8    +      -       +      +
    483C  SER*     4.0    17.0    +      -       -      +
    485C  ARG*     3.1    30.1    +      -       +      +
    486C  LEU      6.0     1.1    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 402 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    335C  ARG*     5.1    15.9    -      -       +      +
    381C  TYR      5.2     1.9    -      -       -      +
    382C  MET*     6.1     1.1    -      -       -      -
    383C  ALA*     4.3    12.8    -      -       +      +
    385C  GLU*     3.7    16.2    -      -       -      +
    386C  VAL*     3.8    19.5    -      -       +      -
    391C  ILE*     3.8    21.5    -      -       +      -
    398C  SER      3.2    15.3    +      -       -      +
    399C  TYR*     3.5    13.2    -      -       +      +
    401C  ARG*     1.3    76.5    -      -       -      +
    403C  ASP*     1.3    66.6    +      -       -      +
    405C  TRP*     3.5     5.4    +      -       -      +
    406C  ALA*     3.3    19.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 403 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    316C  LEU*     3.9    11.4    -      -       +      +
    320C  HIS*     2.9    27.1    +      -       +      +
    333C  ALA*     3.6     2.3    -      -       -      +
    334C  HIS*     2.8    34.2    +      -       -      +
    335C  ARG*     2.8    30.4    +      -       -      -
    336C  ASP      4.5     0.5    +      -       -      -
    337C  LEU*     3.7    10.1    +      -       +      +
    399C  TYR      3.3    10.8    +      -       -      +
    400C  LYS      3.0    10.5    +      -       -      +
    402C  VAL*     1.3    79.5    -      -       -      +
    404C  ILE*     1.3    59.1    +      -       -      +
    406C  ALA*     3.4     6.4    +      -       -      +
    407C  PHE*     2.9    28.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 404 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    316C  LEU*     4.3    11.4    -      -       +      -
    320C  HIS*     4.4     4.5    -      -       +      +
    400C  LYS*     3.1    17.9    +      -       +      +
    401C  ARG*     3.6    12.1    -      -       +      +
    402C  VAL      3.2     0.4    -      -       -      -
    403C  ASP*     1.3    73.9    -      -       -      +
    405C  TRP*     1.3    67.8    +      -       -      +
    407C  PHE*     3.2     5.1    +      -       +      +
    408C  GLY      3.1    18.4    +      -       -      -
    477C  CYS*     3.5    32.8    -      -       +      +
    485C  ARG*     4.2     9.0    -      -       +      -
    486C  LEU      3.4    23.8    -      -       -      +
    487C  THR*     3.9     2.2    -      -       -      -
    488C  ALA*     3.6    37.5    -      -       +      +
    491C  ILE*     4.1     8.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 405 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    381C  TYR      3.2    23.3    +      -       -      -
    382C  MET      3.3    13.4    +      -       -      -
    383C  ALA*     3.7    18.6    -      -       +      -
    384C  PRO*     3.5    29.8    -      -       +      -
    401C  ARG      3.1    12.4    +      -       -      +
    402C  VAL      3.6     8.3    -      -       -      +
    404C  ILE*     1.3    75.3    -      -       -      +
    406C  ALA*     1.3    62.6    +      -       -      +
    408C  GLY*     3.1    12.0    +      -       -      -
    409C  LEU*     3.3    28.1    +      -       +      +
    431C  PHE*     4.5    17.2    -      +       -      -
    448C  VAL*     4.1    12.3    -      -       +      -
    453C  GLN      5.0     0.7    -      -       -      -
    454C  ARG*     3.5    32.8    -      -       -      -
    455C  PRO*     6.1     0.2    -      -       +      -
    477C  CYS      3.6    13.4    +      -       -      +
    478C  TRP*     3.4    48.8    +      +       +      -
    485C  ARG*     4.0    10.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 406 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    337C  LEU*     3.6    33.4    -      -       +      +
    381C  TYR*     4.1    20.9    -      -       +      +
    402C  VAL*     3.3    10.4    +      -       +      +
    403C  ASP*     3.7     8.1    -      -       -      +
    404C  ILE      3.3     0.2    -      -       -      -
    405C  TRP*     1.3    82.3    -      -       -      +
    407C  PHE*     1.3    66.3    +      -       -      +
    409C  LEU*     3.2     6.0    +      -       -      +
    410C  VAL*     3.1    25.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 407 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309C  VAL*     4.2     7.6    -      -       +      -
    312C  ILE*     3.5    40.8    -      -       +      -
    313C  ALA*     4.1    15.3    -      -       +      -
    316C  LEU*     4.2    15.0    -      -       +      -
    337C  LEU*     4.0    12.1    -      -       +      +
    403C  ASP      2.9    18.0    +      -       -      +
    404C  ILE*     3.2     8.9    +      -       -      +
    406C  ALA*     1.3    76.7    -      -       -      +
    408C  GLY*     1.3    57.5    +      -       -      +
    410C  VAL*     3.1     9.9    +      -       +      +
    411C  LEU*     2.9    55.7    +      -       +      +
    477C  CYS*     4.2     2.5    -      -       -      -
    491C  ILE*     3.5    47.3    -      -       +      -
    495C  LEU*     4.6     3.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 408 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    404C  ILE      3.1    10.3    +      -       -      -
    405C  TRP      3.1     5.1    +      -       -      -
    407C  PHE*     1.3    76.8    -      -       -      +
    409C  LEU*     1.3    61.3    +      -       -      +
    411C  LEU*     3.3    10.9    -      -       -      +
    412C  TRP      3.1    16.5    +      -       -      -
    474C  MET*     3.8     3.8    -      -       -      +
    477C  CYS*     3.9    19.5    -      -       -      -
    478C  TRP*     3.5    26.0    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 409 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    380C  ARG      3.9     7.9    -      -       -      +
    381C  TYR*     3.8    40.4    -      -       +      -
    405C  TRP*     3.3    37.1    +      -       +      +
    406C  ALA*     3.2     6.6    +      -       -      +
    408C  GLY*     1.3    77.1    -      -       -      +
    410C  VAL*     1.3    57.0    +      -       -      +
    412C  TRP*     3.2     9.6    +      -       -      +
    413C  GLU*     3.0    30.6    +      -       -      +
    430C  PRO*     4.0    17.2    -      -       +      +
    431C  PHE*     4.1    11.7    -      -       +      -
    455C  PRO*     3.7    30.3    -      -       +      -
    478C  TRP*     3.9    11.4    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 410 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291C  LEU*     4.1    18.4    -      -       +      -
    309C  VAL*     6.3     0.4    -      -       +      -
    312C  ILE*     4.2    12.1    -      -       +      -
    337C  LEU*     5.0     2.7    -      -       +      -
    338C  LYS*     4.0    27.1    -      -       -      +
    339C  SER*     4.0     5.2    -      -       -      +
    342C  ILE*     4.1    22.0    -      -       +      -
    381C  TYR*     4.0     2.5    -      -       +      -
    406C  ALA      3.1    15.9    +      -       -      +
    407C  PHE*     3.5    12.6    -      -       +      +
    409C  LEU*     1.3    72.1    -      -       -      +
    411C  LEU*     1.3    66.8    +      -       -      +
    413C  GLU*     3.1    21.0    +      -       +      +
    414C  VAL*     3.0    22.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 411 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309C  VAL*     3.5    32.5    -      -       +      -
    407C  PHE*     2.9    45.2    +      -       +      +
    408C  GLY*     3.3    13.5    -      -       -      +
    410C  VAL*     1.3    78.2    -      -       -      +
    412C  TRP*     1.3    55.5    +      -       -      +
    414C  VAL*     3.3     5.6    +      -       -      +
    415C  ALA*     2.9    32.0    +      -       -      +
    470C  LEU*     4.2    25.4    -      -       +      +
    473C  LEU*     4.2    27.4    -      -       +      -
    474C  MET*     3.9    16.4    -      -       +      +
    477C  CYS*     5.0     0.9    -      -       -      -
    495C  LEU*     5.4     0.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 412 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408C  GLY      3.1     7.3    +      -       -      +
    409C  LEU*     3.3    10.3    -      -       -      +
    410C  VAL      3.2     0.2    -      -       -      -
    411C  LEU*     1.3    76.0    -      -       -      +
    413C  GLU*     1.3    86.9    +      -       +      +
    415C  ALA*     4.0     1.5    -      -       -      +
    416C  ARG*     3.1    57.5    +      -       +      +
    428C  LYS*     3.6    26.2    -      -       +      -
    429C  PRO      3.8     1.1    -      -       -      -
    430C  PRO*     3.7    25.6    -      -       +      -
    431C  PHE      5.0     1.1    -      -       -      -
    432C  TYR*     3.9    29.4    -      +       -      -
    455C  PRO*     3.5    25.9    -      -       +      +
    456C  ASN*     3.0    31.0    +      -       +      -
    461C  TRP*     4.0    12.8    -      +       -      -
    474C  MET*     3.3    38.1    -      -       +      -
    478C  TRP*     4.2     4.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 413 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295C  LEU*     4.2    13.5    -      -       +      +
    339C  SER*     2.7    23.1    +      -       -      -
    381C  TYR*     2.4    36.8    +      -       -      -
    409C  LEU      3.0    13.2    +      -       -      +
    410C  VAL*     3.1    18.4    +      -       +      +
    412C  TRP*     1.3    83.5    -      -       +      +
    414C  VAL*     1.3    62.7    +      -       +      +
    416C  ARG*     3.2    19.3    -      -       -      +
    427C  TYR*     2.5    39.1    +      -       +      -
    428C  LYS      4.0    10.8    -      -       -      +
    430C  PRO*     3.7    17.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 414 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291C  LEU*     3.9    28.9    -      -       +      -
    295C  LEU*     4.0    25.3    -      -       +      +
    300C  LEU*     5.4     7.8    -      -       +      +
    305C  CYS*     4.0    21.0    -      -       +      +
    308C  ILE*     4.1    21.1    -      -       +      -
    309C  VAL*     3.9    24.2    -      -       +      -
    312C  ILE*     5.2     0.2    -      -       +      -
    410C  VAL*     3.0    21.5    +      -       +      +
    411C  LEU      3.8     3.8    -      -       -      +
    413C  GLU*     1.3    78.0    -      -       -      +
    415C  ALA*     1.3    63.5    +      -       -      +
    416C  ARG      3.5     8.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 415 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305C  CYS*     4.6    11.4    -      -       -      -
    309C  VAL*     5.9     0.2    -      -       -      +
    411C  LEU      2.9    18.4    +      -       -      +
    412C  TRP*     4.0     0.7    -      -       -      +
    414C  VAL*     1.3    72.4    -      -       -      +
    416C  ARG*     1.3    70.8    +      -       -      +
    461C  TRP*     3.8    35.3    +      -       +      -
    467C  LEU*     5.6     6.7    -      -       +      +
    470C  LEU*     4.3    23.3    -      -       +      -
    474C  MET*     5.1     0.9    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 416 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    412C  TRP*     3.1    58.1    +      -       +      +
    413C  GLU*     3.2    17.0    -      -       -      +
    414C  VAL      3.5    10.7    -      -       -      +
    415C  ALA*     1.3    82.7    -      -       -      +
    425C  GLU*     3.5    57.0    +      -       -      +
    426C  ASP      3.0    30.6    +      -       -      +
    427C  TYR*     5.8     2.2    -      -       -      -
    428C  LYS*     3.1    35.7    -      -       -      +
    432C  TYR*     4.0    16.2    +      -       -      -
    456C  ASN      5.8     0.6    +      -       -      -
    458C  PRO*     5.4     5.4    -      -       -      +
    461C  TRP*     3.6    10.8    -      -       +      -
----------------------------------------------------------
 Back to top of page


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