Contacts of the helix formed by residues 404 - 426 (chain H) in PDB entry 4UJ4


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 404 (chain H).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296B  GLU*     4.9     2.8    +      -       -      -
    379H  CYS*     3.7    22.6    -      -       -      -
    382H  THR*     4.3     6.0    -      -       -      +
    384H  GLN*     5.9     0.9    -      -       -      -
    386H  LYS*     4.7    13.9    -      -       -      -
    388H  CYS*     3.8     7.3    -      -       -      -
    390H  HIS*     6.3     0.2    -      -       -      -
    403H  ILE*     1.3    76.6    -      -       -      +
    405H  PRO*     1.3    64.4    -      -       -      +
    406H  PHE*     3.5    10.4    +      -       -      +
    407H  CYS*     2.8    29.6    +      -       -      -
    408H  ARG*     2.7    33.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 405 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    386H  LYS*     5.1     7.4    -      -       +      -
    387H  SER      3.6    23.1    -      -       -      +
    388H  CYS*     4.7     0.9    -      -       -      -
    389H  LYS*     5.2     8.1    -      -       +      +
    390H  HIS*     5.6     4.5    -      -       +      +
    403H  ILE      3.8     1.5    -      -       -      +
    404H  SER*     1.3    88.2    -      -       -      +
    406H  PHE*     1.3    62.1    +      -       +      +
    408H  ARG*     3.7    13.3    -      -       +      +
    409H  TYR*     3.2    22.2    +      -       -      +
    456H  PHE*     3.8    12.7    -      -       +      -
    457H  LYS      4.6     2.1    -      -       -      +
    458H  GLU*     4.0    36.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 406 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296B  GLU*     3.4    45.8    -      -       +      +
    297B  ALA      5.0     0.4    -      -       -      -
    298B  ASP*     4.6    11.9    -      -       -      -
    335H  PHE*     5.5     0.7    -      +       -      -
    382H  THR*     5.3     5.4    -      -       +      -
    404H  SER*     3.1     9.1    +      -       -      +
    405H  PRO*     1.3    79.0    -      -       -      +
    407H  CYS*     1.3    73.8    +      -       -      +
    409H  TYR*     3.4     4.7    +      -       -      +
    410H  ARG*     3.4    62.5    +      -       +      +
    451H  ALA      4.0     4.0    -      -       -      -
    454H  GLY*     3.4    33.7    -      -       -      -
    456H  PHE*     3.3    37.0    -      +       +      -
----------------------------------------------------------
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Residues in contact with CYS 407 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    335H  PHE*     3.7    27.1    -      -       +      -
    379H  CYS*     3.6    21.3    -      -       -      -
    381H  LEU*     4.0     8.5    -      -       +      -
    382H  THR*     4.0    11.9    -      -       -      -
    403H  ILE*     3.3    25.8    -      -       +      -
    404H  SER*     2.8    24.2    +      -       -      +
    406H  PHE*     1.3    77.4    -      -       -      +
    408H  ARG*     1.3    63.2    +      -       -      +
    410H  ARG*     3.0     8.6    +      -       -      +
    411H  ILE*     2.9    25.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 408 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130G  HIS      5.1     5.7    +      -       -      -
    131G  LEU*     5.7     7.5    +      -       -      +
    355H  ILE*     4.3    14.0    -      -       +      +
    390H  HIS*     2.9    57.2    +      -       +      +
    403H  ILE*     3.5    10.5    -      -       +      +
    404H  SER      2.7    18.6    +      -       -      +
    405H  PRO*     3.7    11.0    -      -       +      +
    406H  PHE      3.3     0.4    -      -       -      -
    407H  CYS*     1.3    72.1    -      -       -      +
    409H  TYR*     1.3    64.5    +      -       -      +
    411H  ILE*     4.9     3.6    -      -       -      -
    412H  THR*     3.0    54.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 409 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405H  PRO      3.2     9.3    +      -       -      +
    406H  PHE      3.6     8.5    -      -       -      +
    407H  CYS      3.2     0.2    -      -       -      -
    408H  ARG*     1.3    82.4    -      -       -      +
    410H  ARG*     1.3    55.6    +      -       +      +
    412H  THR*     3.4     6.6    +      -       -      -
    413H  SER*     2.6    41.8    +      -       -      -
    447H  GLU*     2.5    43.4    +      -       -      -
    450H  LEU*     4.7     6.1    -      -       -      +
    451H  ALA*     3.4    30.1    -      -       +      -
    455H  TYR      3.5    14.6    +      -       -      -
    456H  PHE*     3.2    27.6    -      -       +      -
    457H  LYS*     3.5    37.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 410 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    298B  ASP*     2.8    32.0    +      -       -      -
    331H  PRO      2.9    25.9    +      -       -      -
    332H  CYS*     3.2    30.9    +      -       -      +
    333H  LEU*     5.1     0.2    -      -       -      -
    334H  THR*     3.7    12.9    +      -       -      -
    335H  PHE*     3.9    19.7    -      -       +      -
    406H  PHE*     3.4    47.6    -      -       +      +
    407H  CYS*     3.0     7.0    +      -       -      +
    409H  TYR*     1.3    77.8    -      -       +      +
    411H  ILE*     1.3    62.6    +      -       -      +
    413H  SER*     3.5     2.3    +      -       -      -
    414H  VAL*     3.2    28.2    +      -       -      +
    451H  ALA*     3.4    34.5    +      -       +      +
    452H  LYS      3.7    14.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 411 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333H  LEU*     4.3    17.9    -      -       +      -
    335H  PHE*     4.4     6.7    -      -       +      -
    344H  VAL*     4.1    13.5    -      -       +      -
    348H  VAL*     4.4     5.8    -      -       +      -
    353H  LEU*     4.1    13.9    -      -       +      -
    355H  ILE*     3.8    19.7    -      -       +      -
    381H  LEU*     3.6    28.9    -      -       +      -
    392H  ILE*     4.4    17.5    -      -       +      -
    403H  ILE*     4.8     3.8    -      -       +      -
    407H  CYS      2.9    17.4    +      -       -      +
    408H  ARG*     4.1     2.7    -      -       -      +
    410H  ARG*     1.3    74.8    -      -       -      +
    412H  THR*     1.3    53.8    +      -       -      +
    414H  VAL*     2.8     6.6    +      -       -      +
    415H  CYS*     2.7    47.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 412 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130G  HIS*     4.3    18.2    -      -       +      +
    131G  LEU*     4.9     5.4    -      -       +      -
    355H  ILE*     3.5    22.9    -      -       +      -
    408H  ARG*     3.0    45.2    +      -       +      +
    409H  TYR*     3.4    10.9    +      -       -      -
    411H  ILE*     1.3    74.9    -      -       -      +
    413H  SER*     1.3    56.7    +      -       -      +
    415H  CYS*     4.2     8.3    -      -       -      -
    416H  ASN*     2.7    47.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 413 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409H  TYR*     2.6    45.8    +      -       -      -
    410H  ARG*     3.5     8.3    -      -       -      -
    412H  THR*     1.3    78.6    +      -       -      +
    414H  VAL*     1.3    61.4    +      -       -      +
    416H  ASN*     3.5     7.6    +      -       -      +
    417H  PHE*     3.2    17.2    +      -       -      +
    444H  LEU*     4.5     4.0    -      -       -      +
    447H  GLU*     4.1    11.3    +      -       -      +
    448H  MET*     3.8    34.0    -      -       -      +
    451H  ALA*     4.6     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 414 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    329H  ILE*     3.9    20.0    -      -       +      +
    332H  CYS*     3.7    25.8    -      -       +      -
    333H  LEU*     4.1    16.8    -      -       +      -
    348H  VAL*     3.8    11.2    -      -       +      -
    410H  ARG      3.2    15.7    -      -       -      +
    411H  ILE      2.8     7.9    +      -       -      +
    413H  SER*     1.3    74.6    -      -       -      +
    415H  CYS*     1.3    65.9    +      -       -      +
    417H  PHE*     3.1    11.4    +      -       -      +
    418H  PHE*     3.1    39.3    +      -       +      -
    448H  MET*     3.9    15.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 415 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130G  HIS*     3.3    43.7    +      -       +      +
    348H  VAL*     3.6    40.2    -      -       -      -
    353H  LEU*     4.1     8.3    -      -       -      -
    411H  ILE*     2.7    29.9    +      -       -      +
    412H  THR*     3.9     0.4    -      -       -      +
    414H  VAL*     1.3    72.5    -      -       -      +
    416H  ASN*     1.3    57.4    +      -       -      +
    418H  PHE*     3.5     2.9    +      -       -      +
    419H  THR*     3.0    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 416 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130G  HIS*     3.1    19.9    +      -       -      -
    131G  LEU*     4.3    13.4    -      -       -      +
    412H  THR*     2.7    37.2    +      -       -      +
    413H  SER*     3.8     6.2    -      -       -      +
    415H  CYS*     1.3    71.3    -      -       -      +
    417H  PHE*     1.3    63.1    +      -       -      +
    419H  THR*     2.9    23.4    -      -       -      +
    420H  TYR*     3.2     8.8    +      -       -      +
    444H  LEU*     3.4    22.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 417 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    321H  LEU*     4.1    15.3    -      -       +      -
    324H  ILE*     3.4    47.1    -      -       +      -
    329H  ILE*     4.0    22.4    -      -       +      -
    413H  SER      3.2    10.4    +      -       -      +
    414H  VAL      3.1     7.8    +      -       -      +
    416H  ASN*     1.3    78.6    -      -       -      +
    418H  PHE*     1.3    76.7    +      +       -      +
    420H  TYR*     3.3     2.3    +      -       -      +
    421H  ILE*     3.0    53.4    +      -       +      +
    441H  VAL*     4.1    11.7    -      -       +      -
    444H  LEU*     3.3    30.9    -      -       +      +
    445H  ARG*     5.0     2.0    -      -       +      -
    448H  MET*     4.1    20.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 418 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    314H  MET*     4.1    24.9    -      -       +      -
    321H  LEU*     5.6     3.6    -      -       +      -
    325H  TYR*     3.2    33.2    -      +       -      -
    329H  ILE*     3.3    34.8    -      -       +      -
    345H  LEU*     5.6     0.2    -      -       +      -
    348H  VAL*     3.6    26.9    -      -       +      +
    349H  GLU*     4.0    22.7    -      -       +      -
    414H  VAL*     3.1    34.4    +      -       +      +
    415H  CYS*     3.9     4.0    -      -       -      +
    417H  PHE*     1.3    90.0    -      +       -      +
    419H  THR*     1.3    56.9    +      -       -      +
    421H  ILE*     3.2     4.7    +      -       -      +
    422H  ARG*     2.9    39.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 419 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128G  LEU*     4.8     6.6    -      -       +      +
    130G  HIS*     4.3    13.5    -      -       +      -
    415H  CYS      3.0    17.6    +      -       -      +
    416H  ASN*     2.9    33.2    -      -       -      +
    418H  PHE*     1.3    76.7    -      -       -      +
    420H  TYR*     1.3    62.2    +      -       +      +
    422H  ARG*     3.7    22.8    +      -       -      +
    423H  TYR*     3.2    50.7    +      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 420 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    416H  ASN      3.2     9.6    +      -       -      +
    417H  PHE      3.9     0.2    -      -       -      +
    419H  THR*     1.3    78.2    -      -       +      +
    421H  ILE*     1.3    67.8    +      -       +      +
    423H  TYR*     3.2    25.5    +      +       +      +
    424H  ILE*     3.2    37.2    +      -       +      +
    429H  VAL*     4.6    13.2    -      -       +      +
    432H  GLN*     2.7    26.4    +      -       -      -
    437H  MET*     3.5    27.9    -      -       -      +
    440H  GLU*     3.4    33.4    -      -       +      +
    441H  VAL*     4.1     9.2    -      -       +      -
    444H  LEU*     3.5    33.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 421 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    308H  TRP*     3.5    25.1    -      -       +      -
    314H  MET*     3.3    29.4    -      -       +      -
    320H  PHE*     3.8    26.9    -      -       +      -
    321H  LEU*     4.9     7.0    -      -       +      -
    417H  PHE*     3.0    50.0    +      -       +      +
    418H  PHE*     3.2     6.9    +      -       +      +
    420H  TYR*     1.3    78.8    -      -       +      +
    422H  ARG*     1.3    60.3    +      -       -      +
    424H  ILE*     2.9    25.3    +      -       +      +
    425H  GLN*     3.0    11.6    +      -       -      +
    441H  VAL*     4.6     8.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 422 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127G  ASP*     4.7    11.5    +      -       -      +
    156G  LEU*     5.1     5.7    -      -       -      +
    314H  MET*     4.0    26.5    -      -       +      -
    348H  VAL      6.0     0.2    +      -       -      -
    349H  GLU      5.7     4.0    -      -       -      -
    351H  ASN*     3.0    36.5    +      -       -      +
    418H  PHE*     2.9    22.8    +      -       +      +
    419H  THR*     3.7    26.3    +      -       -      +
    421H  ILE*     1.3    76.0    -      -       -      +
    423H  TYR*     1.3    80.6    +      -       -      +
    425H  GLN*     3.3     4.4    +      -       -      +
    426H  GLN*     2.9    48.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 423 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38G  LEU*     3.4    37.2    -      -       +      +
    127G  ASP*     4.1     1.6    +      -       -      -
    128G  LEU*     3.8    19.6    -      -       -      +
    156G  LEU*     3.8    31.4    -      -       +      +
    419H  THR*     3.2    33.0    +      -       +      -
    420H  TYR*     3.2    23.8    +      +       +      +
    422H  ARG*     1.3    96.1    -      -       +      +
    424H  ILE*     1.3    57.6    +      -       -      +
    426H  GLN*     4.9     2.2    -      -       -      -
    427H  GLY*     2.9    24.9    +      -       -      -
    428H  LEU*     3.1    19.6    -      -       +      +
    429H  VAL*     3.8    10.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 424 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305H  PHE*     4.3    17.3    -      -       +      -
    308H  TRP*     3.8    22.0    -      -       +      -
    309H  LYS*     4.7    11.9    -      -       +      +
    312H  PRO*     4.2     8.8    -      -       +      +
    420H  TYR*     3.4    37.7    -      -       +      +
    421H  ILE*     2.9    13.2    +      -       +      +
    423H  TYR*     1.3    76.1    -      -       -      +
    425H  GLN*     1.3    61.3    -      -       -      +
    427H  GLY*     2.9    17.6    +      -       -      -
    429H  VAL*     4.3     9.4    -      -       +      -
    437H  MET*     3.1    37.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 425 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    308H  TRP*     4.6     2.7    -      -       +      -
    312H  PRO*     3.4    45.7    +      -       +      +
    313H  THR*     4.3     1.3    -      -       -      +
    314H  MET*     4.2    32.9    -      -       +      +
    421H  ILE      3.0    14.0    +      -       -      +
    422H  ARG*     3.8     4.5    -      -       -      +
    424H  ILE*     1.3    77.0    -      -       -      +
    426H  GLN*     1.3    73.6    +      -       -      +
    427H  GLY      3.6     0.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 426 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156G  LEU*     5.2     8.1    -      -       -      +
    422H  ARG*     2.9    43.8    +      -       -      +
    423H  TYR*     4.8     2.6    -      -       -      +
    425H  GLN*     1.3    86.4    -      -       -      +
    427H  GLY*     1.3    64.5    +      -       -      +
    428H  LEU*     3.2    32.2    +      -       +      +
----------------------------------------------------------
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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