Contacts of the helix formed by residues 484 - 506 (chain A) in PDB entry 6QVC


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 PHE 484 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230A  GLY*     4.7     0.2    -      -       -      -
    232A  GLU*     3.7    26.9    -      -       +      +
    279A  PHE*     3.5    38.8    -      +       -      -
    288A  PHE*     6.3     3.8    -      +       -      -
    482A  GLY      3.3     3.0    +      -       -      -
    483A  GLY*     1.3    79.1    -      -       -      +
    485A  MET*     1.3    66.5    +      -       +      +
    486A  PRO*     3.6     1.8    -      -       -      -
    487A  VAL*     3.3     6.8    +      -       -      +
    488A  PHE*     2.9    56.9    +      +       +      +
    533A  THR*     3.3    26.5    -      -       +      -
    537A  SER*     5.9     3.4    -      -       -      -
    542A  THR*     3.6    23.6    -      -       +      -
    545A  ILE*     3.6    23.3    -      -       +      -
    549A  LEU*     5.6     3.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 485 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    223A  LEU*     6.4     1.6    -      -       +      -
    229A  VAL      3.6    16.4    -      -       -      +
    230A  GLY*     3.8     8.3    -      -       -      -
    231A  LYS*     4.5    13.7    -      -       +      +
    279A  PHE*     3.5    37.7    -      -       +      -
    420A  PRO*     5.6     7.0    -      -       +      -
    421A  ARG*     4.9    20.4    -      -       +      +
    424A  ILE*     6.1     4.5    -      -       -      -
    484A  PHE*     1.3    84.3    -      -       +      +
    486A  PRO*     1.3    70.0    -      -       +      +
    488A  PHE*     3.1    21.5    +      -       -      +
    489A  VAL*     3.0    32.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 486 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228A  PRO*     4.1    23.1    -      -       +      +
    229A  VAL      3.8    19.5    -      -       -      +
    230A  GLY*     4.0     3.4    -      -       -      +
    365A  PHE*     6.2     0.4    -      -       +      -
    467A  LYS*     6.2     1.8    -      -       -      -
    471A  SER*     4.0    28.7    -      -       -      +
    475A  THR*     6.4     1.8    -      -       -      -
    482A  GLY      4.5     3.6    -      -       -      +
    483A  GLY*     5.5     0.7    -      -       -      -
    484A  PHE      3.8     4.7    -      -       -      +
    485A  MET*     1.3    92.6    -      -       +      +
    487A  VAL*     1.3    63.9    +      -       +      +
    489A  VAL*     3.2    12.0    +      -       +      +
    490A  LEU*     2.9    33.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 487 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    365A  PHE*     4.0    31.4    -      -       +      -
    471A  SER*     5.9     0.4    -      -       -      +
    483A  GLY*     3.5    24.9    -      -       -      +
    484A  PHE      3.5     6.3    -      -       -      +
    485A  MET      3.2     0.6    -      -       -      -
    486A  PRO*     1.3    81.5    -      -       +      +
    488A  PHE*     1.3    55.9    +      -       -      +
    490A  LEU*     3.2    11.3    +      -       +      +
    491A  GLY*     2.9    25.6    +      -       -      -
    532A  LEU*     3.7    23.5    -      -       +      +
    533A  THR*     3.7    25.4    -      -       -      +
    536A  VAL*     4.1    13.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 488 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333A  PHE*     5.6     4.0    -      +       -      -
    424A  ILE*     4.8    24.5    -      -       +      -
    428A  PHE*     5.0    14.4    -      +       -      -
    484A  PHE*     2.9    40.8    +      +       +      +
    485A  MET*     3.1    26.4    +      -       -      +
    487A  VAL*     1.3    76.9    -      -       -      +
    489A  VAL*     1.3    63.8    +      -       +      +
    491A  GLY      3.4     0.7    +      -       -      -
    492A  ALA*     3.0    24.5    +      -       +      +
    529A  ALA*     3.2    44.8    -      -       +      +
    533A  THR*     4.1     8.9    -      -       +      -
    542A  THR*     6.0     0.4    -      -       +      -
    546A  CYS*     4.2    24.7    -      -       +      -
    549A  LEU*     4.9    19.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 489 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    420A  PRO*     4.4    22.4    -      -       +      +
    423A  ALA*     5.8     2.0    -      -       +      -
    424A  ILE*     3.7    29.8    -      -       +      -
    427A  LEU*     5.1     2.0    -      -       +      +
    463A  PHE*     4.4    24.7    -      -       +      -
    467A  LYS*     4.8    14.6    -      -       +      -
    485A  MET*     3.0    22.7    +      -       +      +
    486A  PRO*     3.2    13.2    +      -       +      +
    488A  PHE*     1.3    78.1    -      -       +      +
    490A  LEU*     1.3    58.9    +      -       +      +
    492A  ALA*     3.2     4.5    +      -       -      +
    493A  ALA*     2.9    26.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 490 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    365A  PHE*     4.7     6.5    -      -       +      -
    463A  PHE*     6.0     0.7    -      -       +      -
    464A  PHE*     3.3    51.8    -      -       +      +
    467A  LYS*     3.7    15.5    -      -       +      +
    468A  PHE*     3.6    39.3    -      -       +      +
    471A  SER*     3.9    16.8    -      -       -      +
    486A  PRO      2.9    20.3    +      -       -      +
    487A  VAL*     3.2    14.3    +      -       +      +
    489A  VAL*     1.3    77.1    -      -       +      +
    491A  GLY*     1.3    57.7    +      -       -      +
    493A  ALA*     3.3     4.0    +      -       +      +
    494A  PHE*     3.0    24.1    +      -       -      +
    532A  LEU*     5.0     8.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 491 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    358A  CYS*     6.0     0.4    -      -       -      -
    487A  VAL      2.9    14.7    +      -       -      -
    488A  PHE      3.4     3.3    +      -       -      -
    489A  VAL      3.3     0.2    -      -       -      -
    490A  LEU*     1.3    76.8    -      -       -      +
    492A  ALA*     1.3    56.2    +      -       -      +
    494A  PHE*     3.4     3.7    +      -       -      +
    495A  GLY*     3.0    23.4    +      -       -      -
    528A  GLY*     3.5    17.9    -      -       -      -
    529A  ALA*     3.5    15.9    +      -       -      -
    532A  LEU*     4.2    17.2    -      -       -      +
    533A  THR      5.7     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 492 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    424A  ILE*     4.6    12.3    -      -       +      -
    427A  LEU*     3.3    20.7    -      -       +      +
    428A  PHE*     4.8    14.4    -      -       +      -
    488A  PHE*     3.0    14.9    +      -       +      +
    489A  VAL*     3.6    10.1    -      -       -      +
    491A  GLY*     1.3    76.3    -      -       -      +
    493A  ALA*     1.3    57.1    +      -       -      +
    495A  GLY      3.3     0.2    +      -       -      -
    496A  ARG*     3.0    25.5    +      -       -      +
    525A  ALA*     3.6    16.1    -      -       -      +
    529A  ALA*     3.5    11.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 493 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    427A  LEU*     3.7    10.5    -      -       -      +
    460A  ILE*     3.9     9.8    -      -       +      +
    463A  PHE*     4.1    23.3    -      -       +      -
    464A  PHE*     3.8    24.0    -      -       +      -
    489A  VAL      2.9    13.6    +      -       -      +
    490A  LEU*     3.4    11.7    -      -       +      +
    491A  GLY      3.2     0.2    -      -       -      -
    492A  ALA*     1.3    78.5    -      -       -      +
    494A  PHE*     1.3    58.0    +      -       -      +
    496A  ARG*     3.9     0.5    -      -       -      +
    497A  LEU*     3.0    29.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 494 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    354A  ILE*     4.0    19.3    -      -       +      -
    357A  CYS*     4.5    21.8    -      -       +      -
    358A  CYS*     3.5    33.0    -      -       -      -
    361A  LEU*     4.7    11.9    -      -       +      -
    464A  PHE*     4.0    27.5    -      +       +      -
    490A  LEU      3.0    16.0    +      -       -      +
    491A  GLY*     3.9     6.1    -      -       -      +
    493A  ALA*     1.3    75.7    -      -       -      +
    495A  GLY*     1.3    62.4    +      -       -      +
    497A  LEU*     3.3    26.3    -      -       +      +
    498A  VAL*     3.1    32.8    +      -       +      +
    532A  LEU*     5.1     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 495 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    354A  ILE*     3.9    13.2    -      -       -      -
    491A  GLY      3.0    13.9    +      -       -      -
    492A  ALA      3.3     0.2    +      -       -      -
    493A  ALA      3.2     0.2    -      -       -      -
    494A  PHE*     1.3    78.1    -      -       -      +
    496A  ARG*     1.3    56.9    +      -       -      +
    498A  VAL*     3.3     4.9    -      -       -      +
    499A  GLY      2.9    23.0    +      -       -      -
    524A  TYR*     3.4    25.9    -      -       -      +
    525A  ALA*     3.7    11.7    -      -       -      -
    528A  GLY*     4.7     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 496 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    427A  LEU*     2.8    46.6    +      -       +      +
    429A  ASP      2.9    20.8    +      -       -      +
    431A  ASN      2.8    29.3    +      -       -      -
    433A  TRP*     3.1    56.8    -      -       -      +
    460A  ILE*     4.9     7.4    -      -       +      -
    492A  ALA      3.0    16.8    +      -       -      +
    493A  ALA      4.2     1.1    -      -       -      +
    495A  GLY*     1.3    72.5    -      -       -      +
    497A  LEU*     1.3    60.4    +      -       -      +
    499A  GLY      4.3     0.7    -      -       -      +
    500A  GLU*     2.9    45.5    +      -       +      +
    521A  PRO*     3.7    20.5    -      -       +      +
    522A  GLY*     4.1     6.7    -      -       -      +
    525A  ALA*     3.7    12.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 497 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    457A  VAL*     3.8    33.7    -      -       +      +
    460A  ILE*     3.8    26.1    -      -       +      +
    461A  PHE*     4.5    24.2    -      -       +      +
    464A  PHE*     5.6     6.3    -      -       +      -
    493A  ALA      3.0    15.6    +      -       -      +
    494A  PHE*     3.3    34.8    -      -       +      +
    496A  ARG*     1.3    77.1    -      -       -      +
    498A  VAL*     1.3    63.4    +      -       +      +
    500A  GLU*     3.4     2.6    +      -       +      +
    501A  ILE*     3.1    32.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 498 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    350A  ALA*     5.8     8.1    -      -       +      +
    353A  ALA*     6.3     2.7    -      -       +      -
    354A  ILE*     3.7    27.8    -      -       +      -
    494A  PHE*     3.1    20.8    +      -       +      +
    495A  GLY      3.3    13.5    -      -       -      +
    497A  LEU*     1.3    82.2    -      -       +      +
    499A  GLY*     1.3    57.6    +      -       -      +
    501A  ILE*     3.2    20.4    -      -       +      +
    502A  MET*     2.9    39.1    +      -       +      +
    524A  TYR*     4.7     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 499 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    495A  GLY      2.9    15.6    +      -       -      -
    497A  LEU      3.2     0.2    -      -       -      -
    498A  VAL*     1.3    78.9    -      -       -      +
    500A  GLU*     1.3    55.9    +      -       -      +
    502A  MET*     3.3     3.2    +      -       -      +
    503A  ALA*     2.9    27.2    +      -       -      +
    519A  ILE*     4.5     3.3    -      -       -      +
    521A  PRO*     3.6    15.6    -      -       -      +
    524A  TYR*     3.7    30.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 500 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    432A  THR*     3.7     6.4    -      -       -      +
    433A  TRP*     2.9    29.6    +      -       +      +
    434A  VAL*     3.1    39.4    +      -       +      +
    456A  VAL*     5.7     2.7    -      -       +      -
    457A  VAL*     6.0     4.7    -      -       +      -
    460A  ILE*     4.6    14.4    -      -       +      -
    496A  ARG*     2.9    49.8    +      -       +      +
    497A  LEU*     3.9     4.3    -      -       +      +
    499A  GLY*     1.3    75.7    -      -       -      +
    501A  ILE*     1.3    61.3    +      -       +      +
    503A  ALA*     3.3     5.2    +      -       -      +
    504A  MET*     2.9    26.3    +      -       -      +
    521A  PRO*     3.3    11.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 501 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    457A  VAL*     3.8    28.9    -      -       +      -
    497A  LEU*     3.1    18.7    +      -       +      +
    498A  VAL*     3.2    33.2    -      -       +      +
    500A  GLU*     1.3    77.5    -      -       +      +
    502A  MET*     1.3    62.6    +      -       +      +
    504A  MET*     3.4    23.1    +      -       +      +
    505A  LEU*     2.9    26.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 502 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    347A  GLU*     4.5    15.7    -      -       +      -
    350A  ALA*     4.5    21.8    -      -       +      -
    498A  VAL*     2.9    33.0    +      -       +      +
    499A  GLY*     3.7     6.5    -      -       -      +
    500A  GLU      3.2     0.2    -      -       -      -
    501A  ILE*     1.3    80.9    -      -       +      +
    503A  ALA*     1.3    58.8    +      -       -      +
    505A  LEU*     3.6    14.0    -      -       +      +
    506A  PHE*     2.9    56.2    +      -       +      +
    519A  ILE*     3.5    19.6    -      -       +      +
    524A  TYR*     4.7    13.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 503 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    432A  THR*     3.7    34.9    -      -       +      +
    434A  VAL*     6.0     0.4    -      -       -      -
    499A  GLY      2.9    13.8    +      -       -      +
    500A  GLU*     3.3    11.9    +      -       -      +
    502A  MET*     1.3    77.2    -      -       -      +
    504A  MET*     1.3    61.2    +      -       -      +
    506A  PHE      3.2    18.3    -      -       -      +
    507A  PRO*     3.5     7.3    -      -       -      +
    519A  ILE*     3.6    20.1    -      -       +      +
    521A  PRO*     5.4     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 504 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    434A  VAL*     4.8    25.3    -      -       +      +
    455A  ASN*     5.1    12.6    -      -       -      -
    457A  VAL*     5.9     5.6    -      -       +      -
    500A  GLU      2.9    13.3    +      -       -      +
    501A  ILE*     3.6    24.2    -      -       +      +
    502A  MET      3.2     0.2    -      -       -      -
    503A  ALA*     1.3    75.8    -      -       -      +
    505A  LEU*     1.3    64.3    +      -       +      +
    507A  PRO*     3.4    16.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 505 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    501A  ILE      2.9    18.1    +      -       -      +
    502A  MET*     3.2    21.0    +      -       +      +
    504A  MET*     1.3    79.5    -      -       +      +
    506A  PHE*     1.3    92.1    +      -       +      +
    507A  PRO*     3.3     8.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 506 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    346A  LYS*     6.1     6.7    -      -       +      -
    347A  GLU*     6.3     2.0    -      -       +      -
    502A  MET*     2.9    34.5    +      -       +      +
    503A  ALA*     3.2    12.4    -      -       -      +
    505A  LEU*     1.3   101.3    -      -       +      +
    507A  PRO*     1.3    63.2    -      -       -      +
    508A  ASP*     3.3     7.7    +      -       +      +
    509A  GLY*     4.2    10.4    +      -       -      +
    518A  LYS*     5.7     1.6    -      -       -      +
    519A  ILE*     4.7    17.5    +      -       +      +
----------------------------------------------------------
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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