Contacts of the helix formed by residues 66 - 95 (chain D) in PDB entry 4DAJ


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 GLN 66 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65D  TRP*     1.3    80.7    -      -       -      +
     67D  VAL*     1.3    57.4    +      -       -      +
     69D  PHE*     3.4    10.9    -      -       +      +
     70D  ILE*     2.9    31.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 67 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65D  TRP      3.0     6.8    -      -       -      +
     66D  GLN*     1.3    77.3    -      -       -      +
     68D  VAL*     1.3    62.7    +      -       +      +
     70D  ILE*     4.1     3.6    -      -       -      +
     71D  ALA*     2.9    32.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 68 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65D  TRP*     3.2    34.4    +      -       +      +
     67D  VAL*     1.3    77.1    -      -       +      +
     69D  PHE*     1.3    63.6    +      -       -      +
     71D  ALA*     3.3     6.5    +      -       +      +
     72D  PHE*     2.9    25.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 69 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65D  TRP*     3.1    12.5    +      -       +      +
     66D  GLN*     3.4    15.9    -      -       +      +
     68D  VAL*     1.3    82.6    -      -       -      +
     70D  ILE*     1.3    79.0    +      -       +      +
     72D  PHE*     3.1     5.6    +      -       -      +
     73D  LEU*     3.0    25.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 70 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66D  GLN      2.9    16.0    +      -       -      +
     67D  VAL*     4.1     3.8    -      -       -      +
     69D  PHE*     1.3    84.8    -      -       +      +
     71D  ALA*     1.3    58.1    +      -       -      +
     73D  LEU*     2.9    13.6    -      -       +      +
     74D  THR*     2.9    32.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 71 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67D  VAL      2.9    19.8    +      -       -      +
     68D  VAL*     3.3     8.7    -      -       -      +
     69D  PHE      3.1     0.2    -      -       -      -
     70D  ILE*     1.3    73.3    -      -       -      +
     72D  PHE*     1.3    66.9    +      -       -      +
     74D  THR*     2.6    31.5    +      -       -      -
     75D  GLY*     3.0     4.0    +      -       -      -
    125D  THR*     4.4    14.7    -      -       +      +
    129D  ILE*     5.8     7.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 72 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68D  VAL*     2.9    15.2    +      -       +      +
     69D  PHE*     3.5     9.0    -      -       +      +
     71D  ALA*     1.3    73.8    -      -       -      +
     73D  LEU*     1.3    63.3    +      -       -      +
     75D  GLY*     3.0     5.4    +      -       -      +
     76D  PHE*     2.9    20.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 73 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69D  PHE*     3.0    16.0    +      -       +      +
     70D  ILE*     2.9    21.8    -      -       -      +
     71D  ALA      3.0     0.2    -      -       -      -
     72D  PHE*     1.3    76.4    -      -       -      +
     74D  THR*     1.3    60.8    +      -       +      +
     76D  PHE*     3.0    19.6    +      -       +      +
     77D  LEU*     3.0    18.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 74 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70D  ILE*     2.9    19.0    +      -       +      +
     71D  ALA*     2.6    20.5    +      -       -      +
     73D  LEU*     1.3    68.5    -      -       +      +
     75D  GLY*     1.3    64.9    +      -       -      +
     77D  LEU*     3.2    12.3    +      -       +      +
     78D  ALA*     2.9    23.6    +      -       -      +
    125D  THR*     3.0    33.0    +      -       +      +
    530D  TRP*     3.9    29.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 75 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71D  ALA      3.0     6.9    +      -       -      -
     72D  PHE*     3.0     6.5    +      -       -      -
     74D  THR*     1.3    82.6    +      -       -      +
     76D  PHE*     1.3    62.8    +      -       -      +
     78D  ALA*     3.0     8.8    +      -       -      +
     79D  LEU*     2.9    24.3    +      -       -      +
    122D  ASN*     5.6     1.1    -      -       -      -
    125D  THR*     5.9     1.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 76 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72D  PHE      2.9    11.1    +      -       -      +
     73D  LEU*     3.1    17.9    -      -       +      +
     75D  GLY*     1.3    74.4    -      -       -      +
     77D  LEU*     1.3    73.5    +      -       +      +
     79D  LEU*     3.3    12.9    +      -       +      +
     80D  VAL*     3.0    45.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 77 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73D  LEU      3.0    11.5    +      -       -      +
     74D  THR*     3.3    12.3    -      -       +      +
     76D  PHE*     1.3    86.9    -      -       +      +
     78D  ALA*     1.3    63.9    +      -       -      +
     80D  VAL*     3.0     9.8    +      -       +      +
     81D  THR*     2.9    23.0    +      -       -      -
    121D  MET*     3.6    20.4    -      -       +      -
    530D  TRP*     4.0    16.2    -      -       +      -
    534D  ILE*     3.6    29.2    -      -       +      -
    537D  THR*     3.8    26.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 78 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74D  THR      2.9    15.2    +      -       -      +
     75D  GLY*     3.6     9.2    -      -       -      +
     77D  LEU*     1.3    72.5    -      -       -      +
     79D  LEU*     1.3    64.0    +      -       -      +
     81D  THR*     3.2     3.3    +      -       -      -
     82D  ILE*     3.0    29.8    +      -       +      +
    117D  GLY      4.1     2.9    -      -       -      +
    121D  MET*     3.5    29.1    -      -       +      +
    122D  ASN*     3.0    29.4    -      -       -      +
    125D  THR*     6.2     0.2    -      -       -      +
    530D  TRP*     5.6     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 79 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75D  GLY      2.9    12.7    +      -       -      +
     76D  PHE*     3.4    16.2    -      -       +      +
     78D  ALA*     1.3    75.4    -      -       -      +
     80D  VAL*     1.3    66.6    +      -       +      +
     82D  ILE*     2.9    22.2    -      -       +      +
     83D  ILE*     2.9    47.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 80 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76D  PHE*     3.0    46.9    +      -       +      +
     77D  LEU*     3.5    11.0    -      -       +      +
     79D  LEU*     1.3    77.5    -      -       +      +
     81D  THR*     1.3    58.3    +      -       -      +
     83D  ILE*     3.0    17.5    -      -       +      +
     84D  GLY*     2.9    28.1    +      -       -      -
    537D  THR*     4.5    15.2    -      -       +      +
    541D  VAL*     5.8     6.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 81 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77D  LEU      2.9    11.5    +      -       -      -
     78D  ALA      3.4     8.1    -      -       -      -
     79D  LEU      3.1     0.2    -      -       -      -
     80D  VAL*     1.3    76.4    -      -       -      +
     82D  ILE*     1.3    64.9    +      -       -      +
     84D  GLY*     3.3     1.1    +      -       -      -
     85D  ASN*     2.9    46.7    +      -       -      +
    113D  ASP      3.8    10.8    -      -       -      +
    117D  GLY*     4.0     3.4    -      -       -      +
    121D  MET*     3.5    21.1    -      -       -      -
    536D  SER*     3.7    18.6    -      -       -      +
    537D  THR*     2.6    35.5    +      -       -      +
    540D  PRO*     5.3     0.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 82 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78D  ALA      3.0    15.7    +      -       -      +
     79D  LEU*     2.9    44.9    -      -       +      +
     81D  THR*     1.3    76.4    -      -       -      +
     83D  ILE*     1.3    64.0    +      -       +      +
     85D  ASN*     3.3     7.1    +      -       -      +
     86D  ILE*     2.9    32.1    +      -       -      +
    114D  LEU*     4.3    13.4    -      -       +      +
    117D  GLY*     3.6     5.8    -      -       -      +
    118D  VAL*     3.3    46.2    -      -       +      +
    122D  ASN*     5.8     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 83 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79D  LEU*     2.9    40.4    +      -       +      +
     80D  VAL*     3.0    35.7    -      -       +      +
     82D  ILE*     1.3    74.5    -      -       +      +
     84D  GLY*     1.3    68.3    +      -       -      +
     86D  ILE*     2.7    28.5    -      -       +      +
     87D  LEU*     2.9    17.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 84 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80D  VAL      2.9    17.2    +      -       -      -
     81D  THR*     3.7     0.7    -      -       -      -
     83D  ILE*     1.3    79.0    -      -       -      +
     85D  ASN*     1.3    61.8    +      -       -      +
     87D  LEU*     3.0    16.8    +      -       -      +
     88D  VAL*     2.9    27.0    +      -       -      +
    540D  PRO*     4.3    10.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 85 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81D  THR*     2.9    37.1    +      -       -      +
     82D  ILE      3.8     3.6    -      -       -      +
     84D  GLY*     1.3    73.8    -      -       -      +
     86D  ILE*     1.3    58.1    +      -       -      +
     88D  VAL*     3.1     9.5    +      -       -      +
     89D  ILE*     3.0    34.1    +      -       -      +
    110D  ALA*     3.5    18.7    -      -       -      +
    113D  ASP*     3.1    46.1    +      -       -      +
    114D  LEU*     3.3    11.7    -      -       +      +
    536D  SER      3.9     0.6    +      -       -      -
    540D  PRO*     2.9    27.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 86 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82D  ILE      2.9    18.2    +      -       -      +
     83D  ILE*     2.7    35.0    -      -       +      +
     85D  ASN*     1.3    72.6    -      -       -      +
     87D  LEU*     1.3    67.6    +      -       +      +
     89D  ILE*     3.2     9.8    +      -       +      +
     90D  VAL*     2.9    48.6    +      -       +      +
    114D  LEU*     3.9    18.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 87 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83D  ILE*     2.9    19.1    +      -       +      +
     84D  GLY*     3.0    17.3    -      -       -      +
     86D  ILE*     1.3    76.9    -      -       +      +
     88D  VAL*     1.3    64.3    +      -       -      +
     90D  VAL*     3.8     4.6    -      -       +      +
     91D  ALA*     2.9    29.4    +      -       +      +
    554D  PHE*     3.4    43.5    -      -       +      +
    557D  LEU*     5.7     5.8    -      -       +      -
    558D  LEU*     5.0    17.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 88 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84D  GLY      2.9    19.1    +      -       -      +
     85D  ASN      3.2     7.6    -      -       -      +
     87D  LEU*     1.3    75.7    -      -       -      +
     89D  ILE*     1.3    65.9    +      -       -      +
     91D  ALA*     3.8     1.4    -      -       -      +
     92D  PHE*     3.0    25.4    +      -       +      +
    106D  LEU*     4.3     4.7    -      -       +      +
    107D  LEU*     4.9     4.3    -      -       -      -
    110D  ALA*     3.5    21.1    -      -       +      -
    540D  PRO*     3.4    31.6    -      -       +      -
    543D  TYR*     4.1    20.9    -      -       +      -
    550D  PHE*     4.7    11.3    -      -       +      -
    554D  PHE*     3.9    19.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 89 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85D  ASN      3.0    11.3    +      -       -      +
     86D  ILE*     3.8    11.9    -      -       +      +
     88D  VAL*     1.3    77.0    -      -       -      +
     90D  VAL*     1.3    64.0    +      -       +      +
     92D  PHE*     3.3     5.5    +      -       -      +
     93D  LYS*     3.0    26.7    +      -       +      +
    107D  LEU*     4.5    24.4    -      -       +      +
    110D  ALA*     4.1    20.2    -      -       +      +
    111D  CYS*     4.6    14.4    -      -       -      -
    114D  LEU*     3.5    33.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 90 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86D  ILE*     2.9    47.1    +      -       +      +
     87D  LEU*     3.8     5.8    -      -       +      +
     89D  ILE*     1.3    72.1    -      -       +      +
     91D  ALA*     1.3    67.8    +      -       -      +
     93D  LYS*     3.0     6.5    +      -       -      +
     94D  VAL*     2.9    36.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 91 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87D  LEU*     2.9    22.5    +      -       +      +
     88D  VAL      3.8     1.6    -      -       -      +
     90D  VAL*     1.3    73.9    -      -       -      +
     92D  PHE*     1.3    64.7    +      -       -      +
     94D  VAL*     3.6     8.6    -      -       -      +
     95D  ASN*     3.2    15.6    +      -       -      +
     98D  LEU*     3.0    20.1    -      -       +      +
    550D  PHE*     5.6     0.7    -      -       +      -
    553D  THR*     3.4    25.1    -      -       +      +
    554D  PHE*     3.7    21.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 92 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88D  VAL*     3.0    16.6    +      -       +      +
     89D  ILE*     3.5     7.9    -      -       -      +
     91D  ALA*     1.3    75.4    -      -       -      +
     93D  LYS*     1.3    72.6    +      -       +      +
     94D  VAL      3.1     0.3    +      -       -      -
     95D  ASN      2.9    22.3    +      -       -      +
     98D  LEU*     3.1    38.3    -      -       +      +
     99D  LYS*     3.4    37.8    -      -       +      -
    100D  THR      4.3     1.1    -      -       -      -
    103D  ASN*     3.5    33.7    -      -       +      -
    104D  TYR*     3.8    23.1    -      +       -      -
    107D  LEU*     3.4    30.1    -      -       +      -
    181D  THR*     6.0     0.2    -      -       +      -
    550D  PHE*     5.7     6.2    -      +       +      -
----------------------------------------------------------
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Residues in contact with LYS 93 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89D  ILE*     3.0    21.3    +      -       +      +
     90D  VAL*     3.9     4.3    -      -       -      +
     92D  PHE*     1.3    85.8    -      -       +      +
     94D  VAL*     1.3    60.7    +      -       +      +
     99D  LYS*     3.2    25.3    +      -       -      +
    107D  LEU*     5.8     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 94 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90D  VAL*     2.9    29.8    +      -       +      +
     91D  ALA*     3.6    12.6    -      -       -      +
     93D  LYS*     1.3    77.5    -      -       +      +
     95D  ASN*     1.3    64.6    +      -       +      +
     96D  LYS      4.2     0.2    -      -       -      -
    553D  THR*     5.3     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 95 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91D  ALA      3.2    14.9    +      -       -      +
     92D  PHE      2.9    19.4    +      -       -      +
     93D  LYS      3.4     1.5    -      -       -      -
     94D  VAL*     1.3    84.2    -      -       +      +
     96D  LYS*     1.3    63.9    +      -       -      +
     97D  GLN*     2.9    40.1    +      -       -      +
     98D  LEU*     3.1    18.9    +      -       +      +
     99D  LYS*     3.7     3.5    +      -       -      +
    553D  THR*     3.7    23.8    +      -       +      +
----------------------------------------------------------
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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