Contacts of the helix formed by residues 79 - 103 (chain B) in PDB entry 5FN2


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 ALA 79 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78B  GLY*     1.3    71.3    -      -       -      -
     80B  LYS*     1.3    57.0    +      -       -      +
     81B  HIS      3.1     2.5    -      -       -      -
     82B  VAL*     2.7    33.2    +      -       -      +
     83B  ILE*     2.9    10.9    +      -       -      -
     29C  PRO*     3.8     7.0    -      -       +      +
     30C  LEU*     3.8    34.8    -      -       +      +
     33C  ILE*     3.7    21.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 80 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78B  GLY*     3.6     0.9    -      -       -      -
     79B  ALA*     1.3    76.6    -      -       -      +
     81B  HIS*     1.3    61.6    +      -       +      +
     83B  ILE*     3.2     7.2    +      -       +      +
     84B  MET*     2.9    49.3    +      -       +      +
     27C  GLY      5.8     2.4    +      -       -      -
     29C  PRO*     3.8    21.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 81 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78B  GLY*     3.5    35.9    +      -       -      +
     80B  LYS*     1.3    80.8    +      -       +      +
     82B  VAL*     1.3    62.9    +      -       -      +
     84B  MET*     3.4     4.1    +      -       -      +
     85B  LEU*     3.0    23.8    +      -       -      +
    378B  GLY*     5.0    21.1    +      -       -      -
    379B  VAL*     3.9    21.9    -      -       +      +
    422B  LEU*     4.8    10.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 82 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78B  GLY      3.9    14.1    -      -       -      +
     79B  ALA*     2.7    21.1    +      -       -      +
     81B  HIS*     1.3    73.1    -      -       -      +
     83B  ILE*     1.3    57.4    +      -       -      +
     85B  LEU*     3.2     4.2    +      -       -      +
     86B  PHE*     2.9    52.7    +      -       +      -
    418B  LEU*     4.4     1.9    -      -       +      +
    419B  CYS*     4.6     7.6    -      -       +      +
    422B  LEU*     3.4    44.6    -      -       +      -
    423B  LEU*     4.6    13.7    -      -       +      -
     33C  ILE*     3.9    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 83 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79B  ALA      2.9     6.9    +      -       -      -
     80B  LYS*     3.2    15.4    +      -       +      +
     82B  VAL*     1.3    76.8    -      -       -      +
     84B  MET*     1.3    74.2    +      -       +      +
     86B  PHE*     3.2    15.6    +      -       +      +
     87B  VAL*     3.0    43.6    +      -       +      +
     26C  ALA      4.5    10.8    -      -       -      +
     27C  GLY      4.7     3.1    -      -       -      +
     29C  PRO*     3.5    39.9    -      -       +      +
     32C  VAL*     4.2    28.9    -      -       +      -
     33C  ILE*     5.3     1.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 84 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80B  LYS*     2.9    37.7    +      -       +      +
     81B  HIS*     4.0     4.7    -      -       -      +
     83B  ILE*     1.3    84.1    -      -       +      +
     85B  LEU*     1.3    52.0    +      -       -      +
     87B  VAL*     4.8     4.5    -      -       +      -
     88B  PRO*     2.5    38.5    -      -       -      +
    220B  ARG*     5.0    18.6    -      -       -      +
    223B  GLN*     5.5     4.0    -      -       -      +
    287B  ILE      5.4     3.6    -      -       -      +
    288B  TYR*     4.3    39.5    -      -       +      -
    379B  VAL*     6.0     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 85 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81B  HIS      3.0    13.7    +      -       -      +
     82B  VAL      3.2     8.5    +      -       -      +
     84B  MET*     1.3    77.1    -      -       -      +
     86B  PHE*     1.3    62.1    +      -       -      +
     88B  PRO*     3.4     7.9    -      -       -      +
     89B  VAL*     3.5    11.4    -      -       +      +
    286B  LEU*     5.0     4.9    -      -       +      +
    287B  ILE      5.8     3.1    -      -       -      -
    379B  VAL*     3.9    27.7    -      -       +      +
    380B  LYS      4.8     2.7    -      -       -      +
    381B  LEU*     3.9    39.3    -      -       +      -
    418B  LEU*     3.8    25.6    -      -       +      -
    422B  LEU*     3.3    28.5    -      -       +      -
    425B  LEU*     6.0     1.6    -      -       +      -
    432B  LEU*     6.0     2.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 86 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82B  VAL*     2.9    36.9    +      -       +      -
     83B  ILE*     3.2    20.4    -      -       +      +
     85B  LEU*     1.3    78.4    -      -       -      +
     87B  VAL*     1.3    68.0    +      -       +      +
     89B  VAL*     2.9     9.2    +      -       +      +
     90B  THR*     2.8    27.1    +      -       -      +
    415B  LEU*     3.1    58.8    -      -       +      -
    418B  LEU*     3.6    21.5    -      -       +      +
    419B  CYS*     3.9    16.4    -      -       +      -
     32C  VAL*     5.5     5.2    -      -       +      -
     33C  ILE*     4.1    17.9    -      -       +      -
     36C  VAL*     4.6    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 87 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83B  ILE*     3.0    38.3    +      -       +      +
     84B  MET*     4.2     3.6    -      -       -      +
     86B  PHE*     1.3    76.4    -      -       +      +
     88B  PRO*     1.3    70.6    -      -       +      +
     90B  THR*     3.2    10.8    +      -       +      +
     91B  LEU*     2.9    38.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 88 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84B  MET      2.5    30.5    -      -       -      +
     85B  LEU*     3.4     2.7    -      -       -      +
     86B  PHE      3.4     2.5    -      -       -      -
     87B  VAL*     1.3    86.9    -      -       +      +
     89B  VAL*     1.3    55.8    +      -       -      +
     91B  LEU*     3.2     8.3    +      -       +      +
     92B  CYS*     2.9    28.1    +      -       -      +
    223B  GLN*     4.3    18.6    -      -       +      +
    227B  ILE*     4.0    15.6    -      -       +      +
    286B  LEU*     3.2    35.2    -      -       +      -
    287B  ILE      5.5     2.0    -      -       -      +
    386B  PHE*     3.8     3.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 89 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85B  LEU*     3.5    20.6    -      -       +      +
     86B  PHE      2.9     8.8    +      -       -      +
     88B  PRO*     1.3    80.9    -      -       -      +
     90B  THR*     1.3    57.3    +      -       -      +
     92B  CYS*     3.2     5.7    +      -       -      +
     93B  MET*     2.9    45.1    +      -       +      +
    286B  LEU*     5.4     0.4    -      -       +      -
    381B  LEU*     5.1     1.3    -      -       +      -
    386B  PHE*     3.4    33.7    -      -       +      -
    389B  TYR*     4.2    20.0    -      -       +      -
    414B  ILE*     4.8     7.0    -      -       +      -
    415B  LEU*     5.3     6.3    -      -       +      -
    418B  LEU*     3.8    26.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 90 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86B  PHE*     2.8    20.5    +      -       -      +
     87B  VAL*     3.2    13.8    -      -       +      +
     89B  VAL*     1.3    77.5    -      -       -      +
     91B  LEU*     1.3    59.5    +      -       +      +
     93B  MET*     3.2     4.3    +      -       -      +
     94B  VAL*     2.9    41.2    +      -       +      +
    411B  PHE*     3.7    30.8    -      -       +      -
    415B  LEU*     4.3    11.1    -      -       -      +
----------------------------------------------------------
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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  VAL*     2.9    23.0    +      -       +      +
     88B  PRO*     3.2    10.5    +      -       +      +
     90B  THR*     1.3    78.2    -      -       +      +
     92B  CYS*     1.3    57.4    +      -       -      +
     94B  VAL*     3.2    10.6    +      -       +      +
     95B  VAL*     2.9    42.2    +      -       +      +
    227B  ILE*     3.4    26.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 92 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88B  PRO      2.9     5.8    +      -       -      +
     89B  VAL*     3.3     9.2    -      -       -      +
     91B  LEU*     1.3    75.7    -      -       -      +
     93B  MET*     1.3    63.0    +      -       -      +
     95B  VAL*     3.2     8.7    +      -       -      +
     96B  VAL*     2.9    34.0    +      -       -      +
    227B  ILE*     4.0    16.7    -      -       +      +
    230B  SER*     5.2     1.8    -      -       -      -
    231B  ALA*     4.6     2.6    -      -       +      +
    386B  PHE*     3.2    49.8    -      -       +      -
    390B  SER*     2.5    36.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 93 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89B  VAL*     2.9    33.2    +      -       +      +
     90B  THR      3.3     7.4    -      -       -      +
     92B  CYS*     1.3    79.3    -      -       -      +
     94B  VAL*     1.3    55.9    +      -       -      +
     96B  VAL*     3.2     3.1    +      -       -      +
     97B  VAL*     2.9    36.7    +      -       -      +
    389B  TYR*     3.5    35.7    -      -       -      +
    390B  SER*     3.7     9.2    -      -       -      -
    393B  VAL*     3.5    28.9    -      -       +      -
    411B  PHE*     3.3    43.5    -      -       +      -
    414B  ILE*     3.6    24.9    -      -       +      -
    415B  LEU*     5.5     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 94 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90B  THR*     2.9    29.2    +      -       +      +
     91B  LEU*     3.2    12.3    +      -       +      +
     93B  MET*     1.3    76.9    -      -       -      +
     95B  VAL*     1.3    59.7    +      -       +      +
     97B  VAL*     3.6     5.5    -      -       -      +
     98B  ALA*     2.9    39.5    +      -       +      +
    411B  PHE*     4.7     7.2    -      -       +      -
----------------------------------------------------------
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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*     2.9    33.0    +      -       +      +
     92B  CYS*     3.2    10.5    +      -       -      +
     94B  VAL*     1.3    77.4    -      -       +      +
     96B  VAL*     1.3    60.9    +      -       -      +
     98B  ALA*     4.5     2.1    -      -       -      +
     99B  THR*     3.0    34.1    +      -       +      +
    181B  TYR*     5.0    10.8    -      -       +      +
    227B  ILE*     5.0     5.2    -      -       +      -
    228B  MET*     4.6    17.7    -      -       +      -
    231B  ALA*     3.9    21.5    -      -       +      -
    235B  LEU*     5.6     2.5    -      -       +      -
----------------------------------------------------------
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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  CYS      2.9    10.5    +      -       -      +
     93B  MET*     3.5     7.9    -      -       -      +
     95B  VAL*     1.3    76.9    -      -       -      +
     97B  VAL*     1.3    62.4    +      -       -      +
     99B  THR*     3.1    20.3    -      -       -      +
    100B  ILE*     3.1    35.6    -      -       +      +
    231B  ALA*     3.9    25.1    -      -       +      +
    234B  ALA*     4.2     4.9    -      -       +      -
    235B  LEU*     4.4     5.2    -      -       +      -
    238B  ILE*     3.8     8.5    -      -       +      -
    390B  SER*     3.1    52.5    -      -       -      +
    393B  VAL*     4.5     0.2    -      -       +      -
    394B  GLY*     3.9     3.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 97 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93B  MET*     2.9    25.4    +      -       +      +
     94B  VAL*     3.6     6.7    -      -       -      +
     96B  VAL*     1.3    76.2    -      -       -      +
     98B  ALA*     1.3    63.9    +      -       -      +
    100B  ILE*     3.2     8.4    +      -       -      +
    101B  LYS*     2.9    33.6    +      -       +      +
    393B  VAL*     3.6    36.8    -      -       +      +
    397B  SER*     4.2     5.2    +      -       -      +
    404B  TRP*     4.2    26.9    -      -       +      -
    407B  THR*     4.4    13.7    -      -       +      +
    411B  PHE*     5.6     2.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 98 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94B  VAL*     2.9    24.8    +      -       +      +
     95B  VAL*     4.5     2.0    -      -       -      +
     97B  VAL*     1.3    82.5    -      -       +      +
     99B  THR*     1.3    57.0    +      -       -      +
    101B  LYS*     3.2     8.9    +      -       -      +
    102B  SER*     2.9    32.8    +      -       -      -
    404B  TRP*     5.8     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 99 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95B  VAL*     3.0    23.6    +      -       +      +
     96B  VAL      3.1     9.2    -      -       -      +
     98B  ALA*     1.3    78.3    -      -       -      +
    100B  ILE*     1.3    60.6    +      -       -      +
    102B  SER*     3.9     5.8    -      -       -      -
    103B  VAL*     2.7    52.3    +      -       -      +
    106B  TYR*     4.4     3.0    -      -       +      -
    181B  TYR*     3.4    28.2    +      -       +      -
    185B  VAL*     5.0     0.7    -      -       -      +
    235B  LEU*     3.3    31.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 100 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96B  VAL*     3.1    31.7    +      -       +      +
     97B  VAL*     3.2     5.1    +      -       -      +
     99B  THR*     1.3    82.1    -      -       -      +
    101B  LYS*     1.3    65.0    +      -       +      +
    103B  VAL      3.0    16.8    -      -       -      +
    106B  TYR*     4.8    18.3    -      -       +      +
    107B  THR*     5.6     8.3    +      -       -      +
    235B  LEU*     3.6    13.5    -      -       +      -
    238B  ILE*     3.6    19.5    -      -       +      -
    394B  GLY*     3.3    39.9    -      -       -      +
    397B  SER*     4.0    15.5    -      -       -      +
    398B  ALA*     4.5    13.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 101 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97B  VAL*     2.9    18.8    +      -       +      +
     98B  ALA*     3.4     9.9    -      -       -      +
    100B  ILE*     1.3    80.5    -      -       +      +
    102B  SER*     1.3    61.6    +      -       -      +
    103B  VAL      4.2     1.2    -      -       -      +
    397B  SER*     3.2    24.8    +      -       -      +
    403B  ASP*     2.8    30.0    +      -       -      +
    404B  TRP*     3.5    49.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 102 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98B  ALA      2.9    17.3    +      -       -      -
     99B  THR*     3.5     7.4    +      -       -      -
    101B  LYS*     1.3    78.7    -      -       -      +
    103B  VAL*     1.3    71.8    +      -       -      +
    104B  SER      3.6     0.9    +      -       -      -
    188B  THR*     3.2    18.4    -      -       -      +
    189B  TYR*     5.1    13.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 103 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99B  THR*     2.7    38.0    +      -       -      +
    100B  ILE*     3.0    19.4    -      -       -      +
    101B  LYS      4.2     1.6    -      -       -      +
    102B  SER*     1.3    79.6    +      -       -      +
    104B  SER*     1.3    80.3    +      -       -      +
    105B  PHE*     4.3     3.1    -      -       +      -
    106B  TYR*     3.5    24.6    -      -       +      +
    107B  THR*     5.2     2.1    +      -       -      +
    184B  GLU*     4.1    14.6    -      -       +      +
    185B  VAL*     4.4    18.6    -      -       +      -
    188B  THR*     3.3    25.8    -      -       +      +
----------------------------------------------------------
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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