Contacts of the helix formed by residues 393 - 416 (chain B) in PDB entry 1KKQ


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 393 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300B  LEU*     5.8     2.5    -      -       +      -
    301B  ASP*     4.3    10.9    -      -       -      +
    304B  ASP*     3.4    14.3    +      -       -      +
    392B  LEU*     1.3   100.0    -      -       -      +
    394B  VAL*     1.3    59.5    +      -       -      +
    395B  GLY      3.0     7.2    +      -       -      -
    396B  HIS*     3.0    18.4    +      -       +      +
    397B  ILE*     3.2    20.2    +      -       +      +
    204D  LYS*     5.5     4.6    -      -       -      +
    411D  HIS*     3.1    19.0    -      -       -      +
    414D  SER*     4.2     4.8    +      -       -      -
    415D  ASN*     2.9    31.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 394 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    386B  GLY*     3.1    29.2    -      -       -      +
    388B  ARG      4.5     2.9    -      -       -      +
    391B  LEU*     3.7    33.5    -      -       +      +
    392B  LEU      3.6     4.2    +      -       -      -
    393B  ASN*     1.3    73.9    -      -       -      +
    395B  GLY*     1.3    62.8    +      -       -      +
    397B  ILE*     4.1     3.6    -      -       -      +
    398B  GLU*     3.3    33.9    +      -       -      +
    371D  ASP*     3.9    23.2    +      -       +      +
    415D  ASN*     3.6     0.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 395 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    393B  ASN      3.0     1.6    +      -       -      -
    394B  VAL*     1.3    81.2    -      -       -      +
    396B  HIS*     1.3    66.7    +      -       -      +
    398B  GLU*     3.2    16.7    +      -       -      +
    399B  LYS*     3.2    15.1    +      -       -      +
    371D  ASP*     4.4     4.2    +      -       -      -
    415D  ASN*     3.2    31.9    +      -       -      +
    416D  HIS*     5.8     0.7    -      -       -      -
    417D  PRO*     5.7     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 396 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296B  GLY      4.6    11.4    -      -       -      -
    299B  ASN*     5.2     7.6    +      -       +      -
    300B  LEU*     3.8    26.5    -      -       +      +
    393B  ASN*     3.0    13.7    +      -       +      +
    395B  GLY*     1.3    78.1    -      -       -      +
    397B  ILE*     1.3    61.8    +      -       +      +
    399B  LYS*     3.2    13.9    +      -       +      +
    400B  MET*     3.1    24.9    +      -       +      +
    414D  SER*     3.0    34.9    +      -       -      +
    415D  ASN*     3.5    13.4    +      -       -      +
    417D  PRO*     6.2     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 397 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300B  LEU*     4.0    18.4    -      -       +      -
    304B  ASP*     4.3    13.5    -      -       +      +
    308B  LEU*     3.8    23.8    -      -       +      -
    384B  CYS*     4.1    11.7    -      -       +      -
    385B  CYS      3.9    25.6    -      -       -      +
    386B  GLY*     4.6     2.9    -      -       -      -
    391B  LEU*     3.5    38.1    -      -       +      -
    393B  ASN*     3.2    14.7    +      -       +      +
    394B  VAL      4.4     4.0    -      -       -      +
    396B  HIS*     1.3    76.5    -      -       +      +
    398B  GLU*     1.3    58.5    +      -       -      +
    400B  MET*     3.0    12.5    +      -       +      +
    401B  GLN*     2.9    28.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 398 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    386B  GLY*     4.7    19.8    -      -       -      +
    394B  VAL*     3.3    27.8    +      -       -      +
    395B  GLY*     3.2    10.0    +      -       -      +
    396B  HIS      3.1     0.8    -      -       -      -
    397B  ILE*     1.3    80.7    -      -       -      +
    399B  LYS*     1.3    55.7    +      -       -      +
    401B  GLN*     4.0    12.5    -      -       -      +
    402B  GLU*     3.0    28.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 399 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    395B  GLY      3.2     8.2    +      -       -      +
    396B  HIS*     3.2    17.1    +      -       +      +
    398B  GLU*     1.3    76.5    -      -       -      +
    400B  MET*     1.3    63.9    +      -       -      +
    401B  GLN      3.4     0.2    -      -       -      -
    402B  GLU*     3.7    26.2    -      -       -      +
    403B  GLY*     3.4    14.6    +      -       -      -
    417D  PRO*     4.3    28.2    -      -       +      +
    418D  ASP*     4.3    20.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 400 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    206B  LEU*     5.7     0.2    -      -       -      +
    294B  ILE*     4.4     3.6    -      -       +      -
    295B  PRO      3.6    12.6    -      -       -      +
    296B  GLY*     3.4    17.9    -      -       -      +
    297B  PHE*     3.4    39.9    -      -       +      +
    300B  LEU*     4.4    17.5    -      -       +      -
    308B  LEU*     5.8     0.2    -      -       +      -
    384B  CYS*     3.6    27.8    -      -       +      -
    396B  HIS*     3.1    21.6    +      -       -      +
    397B  ILE*     3.1    14.4    -      -       +      +
    399B  LYS*     1.3    77.6    -      -       -      +
    401B  GLN*     1.3    62.5    +      -       -      +
    403B  GLY*     3.3     9.2    +      -       -      -
    404B  ILE*     3.3    17.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 401 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    381B  ALA*     3.2    19.0    +      -       -      +
    384B  CYS      2.7    24.0    -      -       -      +
    385B  CYS*     3.1    31.7    -      -       -      +
    386B  GLY      4.3     3.6    +      -       -      -
    387B  ASP*     5.3     2.7    +      -       -      +
    397B  ILE      2.9    11.5    +      -       -      +
    398B  GLU*     4.2    10.8    -      -       -      +
    400B  MET*     1.3    72.1    -      -       -      +
    402B  GLU*     1.3    65.0    +      -       -      +
    403B  GLY      2.8     6.1    -      -       -      -
    404B  ILE*     4.1     8.5    -      -       -      +
    405B  VAL*     2.8    42.1    +      -       +      +
    430B  MET*     5.7     4.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 402 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398B  GLU      3.0    22.0    +      -       -      +
    399B  LYS*     3.7    26.8    -      -       -      +
    400B  MET      3.3     0.2    -      -       -      -
    401B  GLN*     1.3    78.7    +      -       -      +
    403B  GLY*     1.3    57.4    +      -       -      +
    405B  VAL*     4.2     6.0    -      -       -      +
    406B  HIS*     3.5    22.9    +      -       -      +
    409B  ARG*     5.5     1.0    +      -       -      -
    418D  ASP*     5.1     5.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 403 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203B  LEU*     4.2    16.7    -      -       -      +
    206B  LEU*     3.4    18.0    -      -       -      +
    399B  LYS      3.4     7.4    +      -       -      -
    400B  MET      3.3     8.5    +      -       -      -
    401B  GLN      2.8     0.8    -      -       -      -
    402B  GLU*     1.3    80.0    -      -       -      +
    404B  ILE*     1.3    65.4    +      -       -      +
    405B  VAL      3.3     0.4    -      -       -      -
    406B  HIS*     3.8     6.1    -      -       -      +
    407B  VAL*     3.4    15.4    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    206B  LEU*     4.0    12.3    -      -       +      -
    210B  ILE*     4.4    15.5    -      -       +      -
    294B  ILE*     4.4     9.6    -      -       +      -
    377B  LEU*     3.8    25.9    -      -       +      +
    380B  ALA*     3.8    31.0    -      -       +      +
    381B  ALA*     3.8    13.7    -      -       +      +
    384B  CYS*     3.8    25.8    -      -       +      -
    400B  MET*     3.3    18.1    +      -       +      +
    401B  GLN*     2.9     8.4    +      -       -      +
    403B  GLY*     1.3    76.5    -      -       -      +
    405B  VAL*     1.3    59.1    +      -       -      +
    407B  VAL*     3.2     8.2    +      -       -      +
    408B  LEU*     3.0    24.5    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
    381B  ALA*     3.8    26.0    -      -       +      -
    401B  GLN*     2.8    28.4    +      -       +      +
    402B  GLU*     4.4     5.4    -      -       -      +
    404B  ILE*     1.3    76.4    -      -       -      +
    406B  HIS*     1.3    59.0    +      -       -      +
    408B  LEU*     3.5    13.7    -      -       +      +
    409B  ARG*     3.1    36.7    +      -       -      +
    423B  PHE*     3.8    23.2    -      -       +      -
    427B  LEU*     5.5     0.7    -      -       +      -
    430B  MET*     5.2    10.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 406 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    200B  THR*     6.4     1.1    -      -       -      -
    203B  LEU*     3.9    25.7    -      -       +      +
    402B  GLU      3.5    18.5    +      -       -      +
    403B  GLY*     4.0     6.7    -      -       -      +
    404B  ILE      3.2     0.8    -      -       -      -
    405B  VAL*     1.3    73.8    -      -       -      +
    407B  VAL*     1.3    68.1    +      -       +      +
    408B  LEU      2.9     5.5    +      -       -      -
    409B  ARG*     3.3    34.0    +      -       -      +
    410B  LEU*     3.2    52.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 407 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203B  LEU*     3.2    35.4    -      -       +      +
    204B  LYS      5.6     0.4    -      -       -      +
    206B  LEU*     3.9    15.5    -      -       +      -
    207B  ALA*     3.5    32.8    -      -       +      +
    210B  ILE*     5.8     0.4    -      -       +      -
    377B  LEU*     4.0    11.7    -      -       +      -
    403B  GLY      3.4     7.5    +      -       -      +
    404B  ILE*     3.2    10.2    +      -       -      +
    406B  HIS*     1.3    83.1    +      -       +      +
    408B  LEU*     1.3    55.7    -      -       -      +
    410B  LEU*     4.0     5.1    -      -       +      +
    411B  HIS*     3.1    26.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 408 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    374B  ASP*     4.6     6.7    -      -       -      +
    377B  LEU*     3.8    37.0    -      -       +      +
    378B  PHE*     4.6    17.7    -      -       +      +
    381B  ALA*     4.9     2.7    -      -       +      -
    404B  ILE      3.0    12.7    +      -       -      +
    405B  VAL*     3.5    20.2    -      -       +      +
    406B  HIS      2.9     0.6    -      -       -      -
    407B  VAL*     1.3    77.0    -      -       -      +
    409B  ARG*     1.3    66.8    +      -       -      +
    410B  LEU      3.0     1.5    +      -       -      -
    411B  HIS*     3.2     1.3    +      -       +      -
    412B  LEU*     2.9    50.6    +      -       +      +
    423B  PHE*     4.1    23.1    -      -       +      -
    426B  LEU*     4.7    13.0    -      -       +      -
    427B  LEU*     5.8     1.6    -      -       +      -
    430B  MET*     5.9     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 409 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    402B  GLU      5.5     1.4    +      -       -      -
    405B  VAL*     3.1    29.6    +      -       -      +
    406B  HIS*     3.4    39.1    -      -       -      +
    408B  LEU*     1.3    78.6    -      -       -      +
    410B  LEU*     1.3    64.2    +      -       +      +
    412B  LEU*     3.4     3.5    +      -       -      +
    413B  GLN*     2.8    38.6    +      -       +      +
    423B  PHE*     3.8    47.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 410 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    406B  HIS*     3.2    43.0    +      -       +      +
    407B  VAL*     4.0     5.8    -      -       +      +
    408B  LEU      3.1     0.8    -      -       -      -
    409B  ARG*     1.3    83.8    -      -       +      +
    411B  HIS*     1.3    58.5    +      -       -      +
    412B  LEU      2.8    10.9    +      -       -      -
    413B  GLN*     2.9    32.2    +      -       -      +
    414B  SER*     3.1    17.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 411 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    207B  ALA*     4.9    11.0    -      -       +      -
    373B  SER*     2.8    40.8    +      -       -      -
    374B  ASP*     2.9    23.9    +      -       -      +
    377B  LEU*     3.9    20.7    -      -       +      +
    407B  VAL      3.1    17.9    +      -       -      +
    408B  LEU      3.2     2.4    +      -       -      +
    410B  LEU*     1.3    77.6    -      -       -      +
    412B  LEU*     1.3    57.5    +      -       -      +
    414B  SER*     4.1     4.9    -      -       -      -
    415B  ASN*     3.1    45.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 412 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    370B  LEU*     4.7     0.4    -      -       +      -
    374B  ASP*     3.5    34.1    -      -       +      +
    408B  LEU*     2.9    33.6    +      -       +      +
    409B  ARG      3.6     3.8    -      -       -      +
    410B  LEU      2.8     0.8    +      -       -      -
    411B  HIS*     1.3    78.4    -      -       -      +
    413B  GLN*     1.3    68.6    +      -       -      +
    414B  SER      3.3     0.9    -      -       -      -
    415B  ASN*     4.5     0.9    -      -       -      +
    416B  HIS*     3.2    26.5    +      -       +      +
    419B  ASP      5.3     0.5    -      -       -      +
    422B  LEU*     3.7    39.4    -      -       +      +
    423B  PHE*     4.1    19.7    -      -       +      +
    426B  LEU*     3.3    29.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 413 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409B  ARG*     2.8    24.7    +      -       +      +
    410B  LEU*     2.9    26.1    +      -       -      +
    412B  LEU*     1.3    80.4    -      -       -      +
    414B  SER*     1.3    64.8    +      -       -      +
    416B  HIS      3.5     1.1    -      -       -      +
    417B  PRO*     3.3    22.9    -      -       -      +
    419B  ASP      6.1     0.2    -      -       -      -
    420B  ILE      6.0     2.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 414 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    410B  LEU      3.1    13.1    +      -       -      -
    411B  HIS*     3.8     4.2    +      -       -      -
    413B  GLN*     1.3    82.5    -      -       -      +
    415B  ASN*     1.3    67.1    +      -       -      +
    417B  PRO*     3.2    21.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 415 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    371B  ASP*     5.4     4.9    +      -       -      -
    373B  SER*     5.2     2.0    +      -       -      -
    411B  HIS*     3.1    44.5    +      -       +      +
    414B  SER*     1.3    82.8    +      -       -      +
    416B  HIS*     1.3    76.7    +      -       +      +
    417B  PRO*     3.2    10.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 416 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    368B  LEU      4.1     4.4    +      -       -      -
    369B  GLU*     3.2    27.6    +      -       -      +
    370B  LEU*     3.8     9.4    -      -       +      -
    371B  ASP*     4.0     7.6    +      -       +      -
    374B  ASP*     2.8    30.8    +      -       -      -
    412B  LEU*     3.2    10.3    +      -       -      +
    413B  GLN      3.5     5.2    -      -       -      +
    415B  ASN*     1.3    99.1    +      -       +      +
    417B  PRO*     1.3    61.3    -      -       -      +
    418B  ASP*     3.1     5.6    -      -       -      +
    419B  ASP*     3.1    28.1    +      -       +      +
    420B  ILE*     4.9     0.2    -      -       -      -
    422B  LEU*     3.5    28.7    -      -       +      +
----------------------------------------------------------
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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