Contacts of the helix formed by residues 71 - 97 (chain E) in PDB entry 6BAA


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 HIS 71 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67E  HIS*     3.1    46.3    +      +       +      +
     68E  PHE      3.2    21.5    -      -       -      +
     70E  GLY*     1.3    75.9    -      -       -      +
     72E  ASN*     1.3    93.3    +      -       -      +
     73E  LEU      3.3     2.5    -      -       -      -
     74E  ARG*     3.2     8.4    -      -       -      +
     75E  TRP*     3.0    47.6    +      -       -      -
    124E  TYR*     3.3    27.8    -      -       +      +
    128E  GLU*     3.6     8.1    +      -       -      +
    222E  VAL      4.4     4.9    -      -       -      -
    224E  LEU      5.4     0.9    -      -       -      -
    227E  LYS*     5.9     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 72 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70E  GLY*     5.8     0.5    -      -       -      -
     71E  HIS*     1.3   105.6    +      -       -      +
     73E  LEU*     1.3    62.4    +      -       -      +
     75E  TRP*     3.1    11.8    +      -       -      +
     76E  ILE*     3.0    26.9    +      -       -      +
    224E  LEU*     4.0    20.6    -      -       +      +
    227E  LYS*     5.4     9.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 73 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70E  GLY*     3.3    36.3    -      -       -      +
     72E  ASN*     1.3    75.3    -      -       -      +
     74E  ARG*     1.3    62.1    +      -       -      +
     76E  ILE*     3.4    16.2    -      -       +      +
     77E  LEU*     2.9    38.2    +      -       +      +
    181E  MET*     4.8    12.8    -      -       +      -
    185E  VAL*     3.8    30.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 74 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70E  GLY      4.6     3.1    +      -       -      +
     71E  HIS*     3.2    20.3    +      -       -      +
     73E  LEU*     1.3    83.6    -      -       -      +
     75E  TRP*     1.3    62.8    +      -       +      +
     77E  LEU*     3.9     5.9    -      -       -      +
     78E  THR*     3.0    38.3    +      -       +      +
    121E  VAL*     5.5     2.9    -      -       +      -
    124E  TYR*     3.3    56.5    +      -       +      +
    136E  LEU*     5.9     0.8    -      -       -      +
    139E  LEU*     4.3    15.8    -      -       -      +
    143E  TRP*     5.4     5.7    -      -       -      +
    182E  LEU*     4.5    16.5    +      -       -      +
    185E  VAL*     3.4    29.6    -      -       +      +
    186E  GLU*     3.4    36.3    +      -       -      +
    189E  VAL*     4.5     6.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 75 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71E  HIS*     3.0    46.0    +      +       -      +
     72E  ASN*     3.1    10.1    +      -       -      +
     74E  ARG*     1.3    77.4    -      -       +      +
     76E  ILE*     1.3    59.1    +      -       -      +
     78E  THR*     2.3    27.9    +      -       -      -
     79E  PHE*     3.0    23.0    +      +       +      -
    121E  VAL*     3.6    33.4    -      -       +      -
    124E  TYR*     4.6     8.4    -      +       -      -
    125E  HIS*     4.0    24.9    -      +       +      -
    128E  GLU*     4.0    17.7    +      -       -      -
    223E  ASN*     3.6    25.9    -      -       +      +
    224E  LEU*     3.7    37.5    -      -       +      +
    225E  LEU*     3.6    27.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 76 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72E  ASN      3.0    14.7    +      -       -      +
     73E  LEU*     3.4    21.1    -      -       +      +
     75E  TRP*     1.3    76.8    -      -       -      +
     77E  LEU*     1.3    73.7    +      -       +      +
     79E  PHE*     3.2    10.7    +      -       +      +
     80E  ILE*     3.0    37.4    +      -       +      +
    224E  LEU*     4.2    23.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 77 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73E  LEU*     2.9    27.9    +      -       +      +
     74E  ARG*     3.9     4.9    -      -       -      +
     76E  ILE*     1.3    85.2    -      -       +      +
     78E  THR*     1.3    61.0    +      -       -      +
     80E  ILE*     3.5    11.3    -      -       +      +
     81E  LEU*     2.9    33.4    +      -       -      +
    178E  LEU*     3.7    24.4    -      -       +      +
    181E  MET*     3.6    40.8    -      -       +      -
    182E  LEU*     3.8    31.2    -      -       +      +
    185E  VAL*     4.6     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 78 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74E  ARG*     3.0    26.1    +      -       -      +
     75E  TRP*     2.3    35.3    +      -       -      -
     77E  LEU*     1.3    78.6    -      -       +      +
     79E  PHE*     1.3    61.4    +      -       -      -
     81E  LEU*     3.4    15.4    -      -       +      +
     82E  LEU*     2.9    36.8    +      -       -      +
    117E  ALA*     5.4     1.8    -      -       +      +
    120E  SER*     5.2     6.3    -      -       -      +
    121E  VAL*     3.8    35.1    -      -       +      +
    143E  TRP*     5.7     6.1    -      -       +      -
    182E  LEU*     6.1     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 79 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75E  TRP*     3.0    35.2    +      +       +      -
     76E  ILE*     3.2    14.1    +      -       +      +
     78E  THR*     1.3    78.2    +      -       -      +
     80E  ILE*     1.3    61.4    +      -       +      +
     82E  LEU*     3.2    15.4    +      -       +      +
     83E  PHE*     3.0    24.3    +      -       -      +
    224E  LEU*     3.7    28.3    -      -       +      -
    225E  LEU*     3.6    39.5    -      -       +      -
    368E  LEU*     5.9    12.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 80 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76E  ILE*     3.0    21.9    +      -       +      +
     77E  LEU*     3.5    13.7    -      -       +      +
     79E  PHE*     1.3    78.6    -      -       +      +
     81E  LEU*     1.3    62.6    +      -       -      +
     83E  PHE*     3.3    13.8    -      -       +      +
     84E  VAL*     3.0    34.4    +      -       +      +
    174E  LEU*     6.1     0.4    -      -       +      -
    178E  LEU*     3.6    38.1    -      -       +      -
    368E  LEU*     6.2     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 81 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77E  LEU      2.9    24.7    +      -       -      +
     78E  THR*     3.4    20.9    -      -       +      +
     80E  ILE*     1.3    78.3    -      -       -      +
     82E  LEU*     1.3    64.4    +      -       +      +
     84E  VAL*     3.3    12.1    -      -       +      +
     85E  LEU*     2.8    41.3    +      -       +      +
    117E  ALA*     3.7    29.8    -      -       +      -
    143E  TRP*     4.8     6.7    -      -       +      -
    175E  LEU*     6.0     2.2    -      -       +      -
    178E  LEU*     4.9    11.4    -      -       +      -
    179E  TYR*     4.3    22.4    -      -       +      +
    182E  LEU*     3.7    29.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 82 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78E  THR*     2.9    27.7    +      -       -      +
     79E  PHE*     3.2    17.7    +      -       +      +
     81E  LEU*     1.3    79.2    -      -       +      +
     83E  PHE*     1.3    61.1    +      -       -      +
     85E  LEU*     3.6     6.1    -      -       -      +
     86E  VAL*     3.0    30.6    +      -       +      +
    114E  PHE*     3.9    23.2    -      -       +      -
    117E  ALA*     3.4    38.4    -      -       +      -
    118E  ILE*     4.0    21.8    -      -       +      +
    121E  VAL*     6.1     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 83 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79E  PHE      3.0    13.4    +      -       -      +
     80E  ILE*     3.3    17.3    -      -       +      +
     82E  LEU*     1.3    77.2    -      -       -      +
     84E  VAL*     1.3    76.2    +      -       +      +
     86E  VAL*     3.3     4.7    +      -       -      +
     87E  CYS*     3.1    33.8    +      -       -      -
    361E  LEU*     3.9    29.8    -      -       +      -
    364E  LEU*     3.6    36.1    -      -       +      +
    365E  ALA      5.9     0.2    -      -       -      -
    368E  LEU*     5.5     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 84 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80E  ILE*     3.0    19.7    +      -       +      +
     81E  LEU*     3.3    20.4    -      -       +      +
     83E  PHE*     1.3    86.5    -      -       +      +
     85E  LEU*     1.3    67.6    +      -       +      +
     87E  CYS*     3.0    12.5    +      -       +      +
     88E  GLU*     2.8    41.4    +      -       -      +
    171E  LEU*     5.7     3.8    -      -       +      -
    174E  LEU*     3.7    32.1    -      -       +      -
    175E  LEU*     4.5    13.2    -      -       +      -
    178E  LEU*     5.8     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 85 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81E  LEU*     2.8    35.8    +      -       +      +
     82E  LEU*     3.6     7.2    -      -       -      +
     83E  PHE      3.2     0.2    -      -       -      -
     84E  VAL*     1.3    77.2    -      -       +      +
     86E  VAL*     1.3    58.5    +      -       -      +
     88E  GLU*     2.9    20.7    +      -       +      +
     89E  ILE*     2.8    33.0    +      -       +      +
    110E  ALA*     4.2    10.4    -      -       +      +
    113E  ALA*     3.4    23.6    -      -       +      +
    114E  PHE*     3.4    40.8    -      -       +      +
    117E  ALA*     4.7     0.9    -      -       +      -
    175E  LEU*     3.6    24.2    -      -       +      -
    179E  TYR*     4.8     3.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 86 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82E  LEU*     3.0    15.7    +      -       +      +
     83E  PHE      3.5     7.9    -      -       -      +
     85E  LEU*     1.3    74.1    -      -       -      +
     87E  CYS*     1.3    63.8    +      -       -      +
     89E  ILE*     3.3    13.8    +      -       +      +
     90E  ALA*     3.0    22.8    +      -       +      +
    114E  PHE*     4.5    20.9    -      -       +      -
    360E  VAL*     3.6    30.7    -      -       +      -
    361E  LEU*     5.9     2.0    -      -       +      -
    364E  LEU*     4.3    16.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 87 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83E  PHE*     3.1    34.5    +      -       -      -
     84E  VAL*     3.0    17.3    +      -       +      +
     86E  VAL*     1.3    77.6    -      -       -      +
     88E  GLU*     1.3    58.7    +      -       -      +
     90E  ALA*     3.2    10.4    +      -       -      +
     91E  GLU*     2.9    23.9    +      -       -      +
    171E  LEU*     5.0    15.6    -      -       +      +
    361E  LEU*     4.1    27.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 88 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84E  VAL*     2.8    37.8    +      -       -      +
     85E  LEU*     2.9    25.5    +      -       -      +
     87E  CYS*     1.3    74.2    -      -       -      +
     89E  ILE*     1.3    60.9    +      -       -      +
     91E  GLU*     3.6    11.4    -      -       -      +
     92E  GLY*     2.8    24.6    +      -       -      -
    106E  LEU      5.5     0.2    -      -       -      +
    107E  TYR*     5.5     0.5    -      -       -      +
    110E  ALA*     4.7    15.3    -      -       +      +
    168E  ARG*     5.9     4.3    -      -       +      -
    171E  LEU*     3.3    50.5    -      -       +      +
    172E  THR*     5.9     1.1    -      -       -      +
    174E  LEU*     5.3     0.3    -      -       -      +
    175E  LEU*     3.7    16.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 89 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85E  LEU      2.8    18.1    +      -       -      +
     86E  VAL*     3.4    13.9    -      -       +      +
     88E  GLU*     1.3    77.2    -      -       -      +
     90E  ALA*     1.3    58.2    +      -       -      +
     92E  GLY*     3.2     2.4    +      -       -      -
     93E  ILE*     3.0    39.6    +      -       +      +
    107E  TYR*     3.5    20.9    -      -       +      +
    110E  ALA*     3.8     7.4    -      -       +      +
    111E  GLY*     3.4    36.6    -      -       -      +
    114E  PHE*     5.6     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 90 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86E  VAL*     3.0    12.7    +      -       +      +
     87E  CYS*     3.2    13.2    +      -       -      +
     89E  ILE*     1.3    78.9    -      -       -      +
     91E  GLU*     1.3    56.3    +      -       -      +
     93E  ILE*     3.4     5.5    +      -       -      +
     94E  LEU*     2.9    31.2    +      -       -      +
    357E  VAL*     4.1    29.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 91 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87E  CYS      2.9    13.3    +      -       -      +
     88E  GLU*     3.3    13.6    +      -       -      +
     90E  ALA*     1.3    76.1    -      -       -      +
     92E  GLY*     1.3    57.3    +      -       -      +
     94E  LEU*     3.4    10.6    +      -       +      +
     95E  SER*     2.9    34.5    +      -       -      +
    167E  LEU*     3.3    28.5    -      -       +      +
    168E  ARG*     2.8    61.6    +      -       -      +
    171E  LEU*     3.3    20.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 92 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88E  GLU      2.8    14.8    +      -       -      -
     89E  ILE      3.2     3.6    +      -       -      -
     91E  GLU*     1.3    77.1    -      -       -      +
     93E  ILE*     1.3    56.5    +      -       -      +
     95E  SER*     3.3     5.8    +      -       -      -
     96E  ASP*     2.9    28.6    +      -       -      +
    106E  LEU*     3.8    14.0    -      -       -      +
    107E  TYR*     3.7    24.7    -      -       -      +
    168E  ARG*     5.1     2.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 93 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89E  ILE*     3.0    26.7    +      -       +      +
     90E  ALA*     3.9     6.1    -      -       -      +
     92E  GLY*     1.3    73.4    -      -       -      +
     94E  LEU*     1.3    61.1    +      -       -      +
     96E  ASP*     3.3     5.0    +      -       +      +
     97E  GLY*     2.9    25.8    +      -       -      -
    107E  TYR*     3.7    38.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 94 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90E  ALA      2.9    18.8    +      -       -      +
     91E  GLU*     3.6    10.5    -      -       +      +
     93E  ILE*     1.3    77.0    -      -       -      +
     95E  SER*     1.3    64.8    +      -       -      +
     97E  GLY*     3.3    13.6    +      -       -      -
     98E  VAL*     4.5     1.4    +      -       -      +
    354E  ASN*     6.0     7.9    -      -       +      +
    357E  VAL*     6.2     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 95 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91E  GLU*     2.9    17.9    +      -       -      +
     92E  GLY*     3.7     5.6    -      -       -      -
     94E  LEU*     1.3    79.4    -      -       -      +
     96E  ASP*     1.3    65.5    +      -       -      +
     97E  GLY      3.3     0.3    +      -       -      -
     98E  VAL*     3.7    19.9    +      -       -      +
    103E  HIS*     5.6     1.2    +      -       -      -
    106E  LEU*     5.6    11.7    -      -       -      -
    168E  ARG*     2.6    32.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 96 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92E  GLY      2.9    17.3    +      -       -      +
     93E  ILE*     3.8     7.8    -      -       +      +
     95E  SER*     1.3    72.4    -      -       -      +
     97E  GLY*     1.3    54.9    +      -       -      +
     98E  VAL*     3.1     5.8    -      -       -      +
     99E  THR*     2.9    25.5    +      -       -      +
    101E  SER      3.4     6.6    -      -       -      +
    102E  ARG*     3.8    23.8    +      -       -      +
    103E  HIS*     3.3    43.5    +      -       +      +
    106E  LEU*     6.1     1.5    -      -       +      +
    107E  TYR*     3.2    30.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 97 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93E  ILE      2.9    14.6    +      -       -      -
     94E  LEU*     3.3     8.9    +      -       -      -
     95E  SER      3.1     2.4    -      -       -      -
     96E  ASP*     1.3    71.8    -      -       -      +
     98E  VAL*     1.3    63.0    +      -       -      +
     99E  THR*     3.2    14.6    +      -       -      +
----------------------------------------------------------
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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