Contacts of the helix formed by residues 75 - 101 (chain B) in PDB entry 3RFU


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 75 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74B  VAL*     1.3    81.9    -      -       -      +
     76B  PRO*     1.3    70.6    -      -       -      +
     77B  GLU*     3.9     4.5    +      -       -      +
     78B  TYR*     3.3    33.6    +      -       -      +
     79B  LEU*     3.2    26.7    -      -       -      +
    206B  LEU*     5.2     0.9    -      -       -      +
    210B  GLU*     3.6    23.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 76 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74B  VAL      4.4     2.5    -      -       -      +
     75B  SER*     1.3    95.1    -      -       -      +
     77B  GLU*     1.3    71.9    +      -       +      +
     78B  TYR      3.4     0.2    -      -       -      -
     79B  LEU*     3.9     4.0    +      -       -      +
     80B  ASP*     3.7    13.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 77 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75B  SER*     4.4     5.2    -      -       -      +
     76B  PRO*     1.3    85.5    -      -       +      +
     78B  TYR*     1.3    69.1    +      -       -      +
     79B  LEU      3.3     0.2    -      -       -      -
     80B  ASP*     2.9    26.8    -      -       +      +
     81B  MET*     3.0    20.8    +      -       +      +
    136B  ARG*     3.5    24.9    +      -       -      -
    206B  LEU*     4.2    23.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 78 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75B  SER*     3.3    22.8    +      -       -      +
     76B  PRO      3.4     0.4    -      -       -      -
     77B  GLU*     1.3    80.3    -      -       -      +
     79B  LEU*     1.3    92.8    +      -       +      +
     81B  MET*     3.0     7.4    +      -       -      +
     82B  ARG*     2.9    44.3    +      -       +      +
    203B  VAL*     3.5    35.4    -      -       +      +
    206B  LEU*     3.2    40.4    -      -       +      -
    207B  LYS*     3.8    30.0    -      -       +      +
    210B  GLU*     4.3    18.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 79 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74B  VAL*     4.9     9.9    -      -       +      -
     75B  SER      3.2    25.4    -      -       -      +
     76B  PRO      3.9     8.2    +      -       -      +
     77B  GLU      3.3     0.4    -      -       -      -
     78B  TYR*     1.3   101.7    -      -       +      +
     80B  ASP*     1.3    52.4    +      -       -      +
     82B  ARG*     3.0    13.0    +      -       -      +
     83B  ARG*     2.5    40.5    +      -       +      +
    210B  GLU*     5.3     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 80 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76B  PRO      3.7     6.1    +      -       -      +
     77B  GLU*     2.9    26.2    +      -       -      +
     79B  LEU*     1.3    76.1    -      -       -      +
     81B  MET*     1.3    75.5    +      -       -      +
     83B  ARG*     3.0    35.5    +      -       -      +
     84B  ARG*     3.0    48.3    +      -       -      +
    132B  PRO*     4.8     3.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 81 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77B  GLU*     3.6    20.4    -      -       +      +
     78B  TYR*     3.0     6.2    +      -       -      +
     80B  ASP*     1.3    87.4    -      -       -      +
     82B  ARG*     1.3    56.2    +      -       -      +
     84B  ARG*     3.0    10.2    +      -       -      +
     85B  PHE*     2.7    36.7    +      -       -      +
    132B  PRO*     4.4    17.3    -      -       +      -
    133B  PHE*     5.3     1.8    -      -       +      -
    136B  ARG*     3.7    27.1    -      -       -      +
    199B  LEU*     3.9    24.9    -      -       +      +
    202B  GLN*     4.0    28.9    -      -       +      +
    203B  VAL*     3.9    18.4    -      -       +      +
    206B  LEU*     4.3    10.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 82 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78B  TYR*     2.9    39.3    +      -       +      +
     79B  LEU*     3.4    16.6    -      -       -      +
     81B  MET*     1.3    76.2    -      -       -      +
     83B  ARG*     1.3    61.6    +      -       -      +
     84B  ARG      3.6     0.2    +      -       -      -
     85B  PHE*     4.4     1.8    -      -       -      -
     86B  TRP*     2.9    60.2    +      -       -      +
    203B  VAL*     3.9    18.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 83 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79B  LEU*     2.5    19.3    +      -       +      +
     80B  ASP*     3.3    28.8    +      -       -      +
     82B  ARG*     1.3    76.8    -      -       -      +
     84B  ARG*     1.3    60.8    +      -       -      +
     86B  TRP*     4.6     1.9    -      -       -      +
     87B  ILE*     3.2    28.6    +      -       +      +
    128B  TRP*     4.0    32.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 84 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80B  ASP*     3.0    41.8    +      -       -      +
     81B  MET*     3.4    14.1    -      -       -      +
     83B  ARG*     1.3    76.7    -      -       +      +
     85B  PHE*     1.3    59.2    +      -       -      +
     86B  TRP      3.3     0.2    -      -       -      -
     87B  ILE*     3.0     7.6    +      -       -      +
     88B  ALA*     2.6    36.9    +      -       -      +
    128B  TRP*     3.0    70.3    +      -       +      +
    129B  GLY      3.4    13.5    -      -       -      +
    130B  GLY      4.4     0.2    -      -       -      +
    131B  TRP*     4.1     5.1    -      -       -      +
    132B  PRO*     3.0    35.2    -      -       -      +
    199B  LEU*     3.9    22.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 85 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81B  MET      2.7    22.7    +      -       -      +
     82B  ARG*     4.0     2.9    -      -       +      +
     84B  ARG*     1.3    74.9    -      -       -      +
     86B  TRP*     1.3    99.5    +      +       -      +
     88B  ALA*     3.0     2.9    +      -       -      +
     89B  LEU*     2.7    53.5    +      -       +      +
    196B  THR*     3.4    26.1    -      -       -      -
    199B  LEU*     4.0    14.6    -      -       +      -
    200B  LEU*     3.4    51.8    -      -       +      -
    203B  VAL*     4.3    14.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 86 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82B  ARG*     2.9    58.9    +      -       +      +
     83B  ARG      4.6     2.2    -      -       -      +
     84B  ARG      3.3     0.4    -      -       -      -
     85B  PHE*     1.3   100.0    -      +       -      +
     87B  ILE*     1.3    68.3    +      -       +      +
     89B  LEU*     3.0    25.2    +      -       +      +
     90B  MET*     2.7    35.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 87 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83B  ARG*     3.2    20.9    -      -       +      +
     84B  ARG*     3.0    11.7    +      -       -      +
     86B  TRP*     1.3    80.1    -      -       +      +
     88B  ALA*     1.3    64.8    +      -       -      +
     90B  MET*     3.0    21.6    +      -       -      +
     91B  LEU*     2.9    47.0    +      -       +      +
    128B  TRP*     4.6    19.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 88 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84B  ARG      2.6    15.4    +      -       -      +
     85B  PHE      3.2     9.4    -      -       -      +
     87B  ILE*     1.3    75.6    -      -       -      +
     89B  LEU*     1.3    53.1    +      -       -      +
     91B  LEU*     3.0     2.8    +      -       -      +
     92B  THR*     2.6    40.0    +      -       -      -
    125B  VAL*     3.2    30.7    -      -       +      +
    128B  TRP*     6.1     1.1    -      -       +      -
    129B  GLY      5.7     1.3    -      -       -      +
    196B  THR*     3.4    14.4    -      -       +      -
    199B  LEU*     4.2    13.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 89 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85B  PHE*     2.7    37.6    +      -       +      +
     86B  TRP*     3.3    33.9    -      -       +      +
     88B  ALA*     1.3    70.3    -      -       -      +
     90B  MET*     1.3    69.0    +      -       +      +
     92B  THR*     3.1    10.2    +      -       +      -
     93B  ILE*     2.9    27.3    +      -       +      +
    196B  THR*     4.1    13.3    -      -       -      +
    197B  LEU*     6.6     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 90 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86B  TRP*     2.7    29.2    +      -       +      +
     87B  ILE*     3.2    27.1    -      -       +      +
     89B  LEU*     1.3    77.0    -      -       +      +
     91B  LEU*     1.3    60.6    +      -       +      +
     93B  ILE*     3.1     8.8    -      -       -      +
     94B  PRO*     2.7    35.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 91 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87B  ILE*     2.9    35.1    +      -       +      +
     88B  ALA*     3.7     5.8    -      -       -      +
     90B  MET*     1.3    85.3    -      -       +      +
     92B  THR*     1.3    56.9    +      -       -      +
     94B  PRO*     3.4     9.3    -      -       -      +
     95B  VAL*     3.1    22.7    -      -       -      +
    121B  LEU*     3.7    35.8    -      -       +      +
    124B  PRO*     4.0    29.4    -      -       +      -
    125B  VAL*     4.5     9.6    -      -       +      +
    128B  TRP*     6.1     1.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 92 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88B  ALA      2.6    23.3    +      -       -      -
     89B  LEU*     3.5     8.5    -      -       +      +
     90B  MET      2.8     1.4    +      -       -      -
     91B  LEU*     1.3    74.7    -      -       -      +
     93B  ILE*     1.3    65.0    +      -       -      +
     95B  VAL*     3.0     9.7    +      -       +      +
     96B  VAL*     2.9    34.8    +      -       +      -
    125B  VAL*     3.4     5.8    -      -       -      +
    192B  ALA*     3.3    27.0    -      -       +      +
    193B  VAL*     4.0    16.2    -      -       +      +
    196B  THR*     3.1    23.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 93 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89B  LEU*     2.9    22.2    +      -       +      +
     90B  MET*     3.1    20.4    -      -       -      +
     92B  THR*     1.3    73.8    -      -       -      +
     94B  PRO*     1.3    73.2    -      -       +      +
     96B  VAL*     3.0    10.2    +      -       +      +
     97B  ILE*     2.9    37.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 94 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90B  MET      2.7    29.8    -      -       -      +
     91B  LEU*     3.4    11.9    -      -       -      +
     93B  ILE*     1.3    85.3    -      -       +      +
     95B  VAL*     1.3    50.8    +      -       -      +
     97B  ILE*     3.0    14.3    +      -       +      +
     98B  LEU*     2.8    48.9    +      -       +      +
    117B  ILE*     6.1     0.4    -      -       +      -
    121B  LEU*     4.0    18.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 95 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91B  LEU      3.1    21.5    -      -       -      +
     92B  THR*     3.0    14.8    +      -       -      +
     94B  PRO*     1.3    76.1    -      -       -      +
     96B  VAL*     1.3    63.0    +      -       +      +
     98B  LEU*     3.0    19.8    +      -       -      +
     99B  GLU*     3.2     9.7    +      -       -      +
    118B  GLN*     3.7    22.5    -      -       +      +
    121B  LEU*     3.7    22.2    -      -       +      +
    122B  ALA*     4.2    13.7    -      -       +      +
    188B  PHE      4.5     3.6    -      -       -      -
    189B  GLU*     3.9    31.4    -      -       +      +
    192B  ALA*     4.6     7.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 96 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92B  THR*     2.9    23.3    +      -       +      +
     93B  ILE*     3.0    11.2    +      -       +      +
     95B  VAL*     1.3    73.8    -      -       -      +
     97B  ILE*     1.3    66.1    +      -       +      +
     99B  GLU*     3.0     4.5    +      -       -      +
    100B  MET*     2.9    40.5    +      -       +      +
    189B  GLU*     4.0    21.3    -      -       +      +
    193B  VAL*     3.9    28.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 97 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93B  ILE*     2.9    35.6    +      -       +      +
     94B  PRO*     3.2    14.1    -      -       +      +
     96B  VAL*     1.3    76.8    -      -       +      +
     98B  LEU*     1.3    65.1    +      -       +      +
     99B  GLU      2.9     0.3    +      -       -      -
    100B  MET*     3.0     5.3    +      -       -      -
    101B  GLY*     2.6    37.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 98 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94B  PRO*     2.8    28.7    +      -       +      +
     95B  VAL*     3.0    10.7    +      -       -      +
     97B  ILE*     1.3    80.6    -      -       +      +
     99B  GLU*     1.3    60.4    +      -       -      +
    101B  GLY*     5.3     0.7    -      -       -      -
    102B  GLY      3.9    16.1    +      -       -      +
    103B  HIS*     4.2     2.1    +      -       -      -
    114B  SER*     4.0    20.5    +      -       -      +
    117B  ILE*     3.5    44.0    -      -       +      -
    118B  GLN*     3.5    30.3    -      -       +      +
    121B  LEU*     5.5     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 99 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95B  VAL      3.2     6.3    +      -       -      +
     96B  VAL      3.0     7.4    +      -       -      +
     98B  LEU*     1.3    75.4    -      -       -      +
    100B  MET*     1.3    69.5    -      -       +      +
    102B  GLY*     3.1    25.9    +      -       -      +
    118B  GLN*     3.0    22.4    +      -       -      +
    186B  VAL*     3.3    29.7    -      -       -      +
    189B  GLU*     3.9    32.3    -      -       +      +
    710B  PRO*     3.9    17.6    -      -       -      +
    711B  MET*     5.5    10.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 100 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96B  VAL*     2.9    32.6    +      -       +      +
     97B  ILE*     3.9     3.8    -      -       -      +
     99B  GLU*     1.3    74.9    -      -       -      +
    101B  GLY*     1.3    67.1    +      -       -      +
    102B  GLY*     3.1     2.3    +      -       -      -
    189B  GLU*     3.8    17.5    -      -       -      +
    711B  MET*     5.4    12.1    -      -       -      +
    714B  ALA*     4.7    15.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 101 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97B  ILE*     2.6    26.0    +      -       -      +
     98B  LEU*     4.7     0.9    -      -       -      -
    100B  MET*     1.3    72.4    -      -       -      +
    102B  GLY*     1.3    55.9    +      -       -      +
    103B  HIS*     4.1     2.2    -      -       -      +
    104B  GLY*     3.7    13.3    +      -       -      -
----------------------------------------------------------
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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