Contacts of the helix formed by residues 55 - 80 (chain C) in PDB entry 5AZS


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 ASN 55 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51C  ALA      2.7    24.1    +      -       -      +
     52C  LEU      4.7     0.2    -      -       -      -
     53C  ASP      3.7     2.6    -      -       -      +
     54C  ASN*     1.3    70.0    -      -       -      +
     56C  ARG*     1.3    62.1    +      -       -      +
     57C  SER*     3.3    11.9    +      -       -      +
     58C  LEU*     2.9    32.4    +      -       +      +
     59C  ARG*     3.0    27.4    +      -       -      +
    152C  LEU*     3.4    29.1    -      -       +      +
    231C  LEU      4.2     4.4    +      -       -      -
    232C  LEU*     2.9    33.6    +      -       -      +
    234C  GLY*     4.9     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 56 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13B  PRO*     3.7    23.8    -      -       -      +
    352B  ALA*     3.7    22.7    -      -       -      +
    355B  GLU*     3.1    34.5    +      -       -      +
    356B  GLY*     4.0    13.7    -      -       -      +
    359B  GLN*     3.5    29.2    +      -       -      +
     54C  ASN*     2.7    37.8    +      -       -      +
     55C  ASN*     1.3    75.1    -      -       -      +
     57C  SER*     1.3    60.7    +      -       -      +
     59C  ARG*     3.5    39.6    -      -       -      +
     60C  GLN*     3.0    34.4    +      -       -      +
    234C  GLY      3.2    10.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 57 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55C  ASN*     3.3    12.0    +      -       -      +
     56C  ARG*     1.3    74.6    -      -       -      +
     58C  LEU*     1.3    65.1    +      -       -      +
     60C  GLN*     3.6    11.0    +      -       -      +
     61C  THR*     3.3    26.5    +      -       -      +
    148C  ALA*     6.2     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 58 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51C  ALA      4.8     0.4    -      -       -      +
     52C  LEU*     3.4    30.1    -      -       +      +
     55C  ASN*     2.9    23.2    +      -       +      +
     56C  ARG      3.4     0.2    -      -       -      -
     57C  SER*     1.3    73.0    -      -       -      +
     59C  ARG*     1.3    65.7    +      -       -      +
     61C  THR*     2.7    24.1    +      -       -      +
     62C  LEU*     2.9    34.3    +      -       +      +
    145C  ALA      4.1     6.5    -      -       -      +
    148C  ALA*     3.9     7.9    -      -       -      +
    149C  ARG*     3.5    50.5    -      -       +      +
    152C  LEU*     4.0    18.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 59 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348B  ASP      5.8     0.2    -      -       -      -
    352B  ALA*     4.0    21.1    -      -       +      +
    355B  GLU*     4.6     4.4    +      -       -      -
     53C  ASP      2.9    27.9    +      -       -      -
     54C  ASN*     3.7    16.8    +      -       -      +
     55C  ASN      3.0    16.0    +      -       -      +
     56C  ARG*     3.5    43.2    -      -       -      +
     58C  LEU*     1.3    75.6    -      -       -      +
     60C  GLN*     1.3    56.4    +      -       -      +
     62C  LEU*     3.4    14.0    +      -       +      +
     63C  LEU*     3.0    43.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 60 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    349B  SER*     3.8    21.0    +      -       -      +
    352B  ALA*     3.7    18.3    -      -       +      +
    353B  ALA*     3.2    35.9    +      -       -      +
    356B  GLY*     5.4     1.7    -      -       -      -
     56C  ARG*     3.0    22.4    +      -       -      +
     57C  SER*     3.7    10.7    +      -       -      +
     58C  LEU      3.1     0.2    -      -       -      -
     59C  ARG*     1.3    76.4    -      -       -      +
     61C  THR*     1.3    58.6    +      -       +      +
     63C  LEU*     3.2     7.0    +      -       -      +
     64C  ASP*     2.9    34.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 61 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57C  SER      3.3    12.9    +      -       -      +
     58C  LEU*     2.7    26.2    +      -       -      +
     60C  GLN*     1.3    73.4    -      -       +      +
     62C  LEU*     1.3    61.0    +      -       -      +
     64C  ASP*     3.6    26.3    -      -       -      +
     65C  ILE*     3.7     6.8    -      -       -      +
    141C  SER      4.5     1.7    -      -       -      +
    144C  ALA*     5.6     2.2    -      -       +      +
    145C  ALA*     3.7    24.3    -      -       -      +
    148C  ALA*     3.9    23.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 62 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52C  LEU      5.6     2.2    -      -       -      +
     58C  LEU*     2.9    41.0    +      -       +      +
     59C  ARG*     3.6    15.9    -      -       +      +
     61C  THR*     1.3    76.6    -      -       -      +
     63C  LEU*     1.3    58.3    +      -       +      +
     64C  ASP      3.2     0.2    -      -       -      -
     65C  ILE*     3.1    34.4    +      -       +      +
     66C  GLU*     3.6     8.4    +      -       -      +
    145C  ALA*     4.1    19.3    -      -       +      +
    149C  ARG*     6.2     3.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 63 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    345B  ALA*     3.9    18.0    -      -       -      +
    348B  ASP*     3.5    28.0    -      -       +      +
    349B  SER*     3.4    35.2    -      -       -      +
    352B  ALA*     4.7     0.4    -      -       +      -
     59C  ARG*     3.0    37.8    +      -       +      +
     60C  GLN*     3.2     4.9    +      -       -      +
     62C  LEU*     1.3    73.7    -      -       +      +
     64C  ASP*     1.3    61.1    +      -       -      +
     65C  ILE      3.2     0.7    -      -       -      -
     66C  GLU*     3.4    26.5    +      -       -      +
     67C  ALA*     3.1    27.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 64 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    349B  SER*     4.3     9.4    +      -       -      -
     60C  GLN*     2.9    22.1    +      -       -      +
     61C  THR*     3.6    25.1    +      -       -      +
     62C  LEU      3.2     0.2    -      -       -      -
     63C  LEU*     1.3    74.7    -      -       -      +
     65C  ILE*     1.3    57.4    +      -       -      +
     67C  ALA*     3.7     8.7    +      -       -      +
     68C  ALA*     3.2    21.5    +      -       -      +
    141C  SER*     3.2    14.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 65 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61C  THR      3.7     3.6    -      -       -      +
     62C  LEU*     3.1    23.1    +      -       +      +
     64C  ASP*     1.3    75.3    -      -       -      +
     66C  GLU*     1.3    63.0    +      -       +      +
     68C  ALA*     3.0     3.6    +      -       -      +
     69C  ARG*     2.8    29.7    +      -       +      +
    138C  TYR*     4.5    15.1    -      -       +      +
    141C  SER*     3.4    29.8    -      -       -      +
    142C  GLU*     3.9    30.3    -      -       +      +
    145C  ALA*     3.8    25.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 66 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    341B  SER*     5.1     1.7    -      -       -      +
    342B  LEU*     5.1     0.2    -      -       -      -
    345B  ALA*     4.1    17.0    -      -       +      +
    348B  ASP*     5.6     0.7    -      -       -      +
     62C  LEU      3.6     9.1    +      -       -      +
     63C  LEU*     3.4    28.0    +      -       -      +
     65C  ILE*     1.3    78.7    -      -       +      +
     67C  ALA*     1.3    60.9    +      -       -      +
     69C  ARG*     3.9     8.5    -      -       -      +
     70C  ALA*     3.3    20.1    +      -       -      +
     73C  ARG*     4.3     5.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 67 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342B  LEU*     3.5    29.2    -      -       +      +
    345B  ALA*     4.2     8.6    -      -       +      +
    346B  ARG*     4.9    11.4    -      -       +      +
     63C  LEU      3.1    16.6    +      -       -      +
     64C  ASP*     3.8    10.5    -      -       -      +
     66C  GLU*     1.3    75.9    -      -       -      +
     68C  ALA*     1.3    63.9    +      -       -      +
     70C  ALA*     3.3     5.0    +      -       -      +
     71C  GLN*     3.2    24.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 68 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64C  ASP      3.2    17.1    +      -       -      +
     65C  ILE      3.0     4.9    +      -       -      +
     67C  ALA*     1.3    73.0    -      -       -      +
     69C  ARG*     1.3    64.8    +      -       -      +
     71C  GLN*     3.5    10.1    +      -       -      +
     72C  TYR*     3.1    18.2    +      -       -      +
    134C  ALA*     4.3     2.6    -      -       -      +
    137C  GLN*     4.5     5.3    -      -       +      +
    138C  TYR*     3.4    36.1    -      -       +      +
    141C  SER*     4.0     9.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 69 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65C  ILE*     2.8    20.5    +      -       +      +
     66C  GLU*     3.9     9.6    -      -       -      +
     68C  ALA*     1.3    73.4    -      -       -      +
     70C  ALA*     1.3    56.4    +      -       -      +
     72C  TYR*     3.0    30.1    +      -       -      +
     73C  ARG*     2.9    50.4    +      -       -      +
     76C  ARG*     5.0     8.3    -      -       -      +
    138C  TYR*     3.5    47.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 70 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    338B  ALA*     3.3    23.8    -      -       -      +
    342B  LEU*     3.7    21.8    -      -       +      +
     66C  GLU      3.3    11.6    +      -       -      +
     67C  ALA      3.3    10.9    +      -       -      +
     69C  ARG*     1.3    79.3    -      -       -      +
     71C  GLN*     1.3    51.3    +      -       -      +
     73C  ARG*     3.0    21.5    +      -       -      +
     74C  ILE*     2.8    38.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 71 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342B  LEU*     4.2    19.2    -      -       +      +
    346B  ARG*     3.3    28.3    -      -       -      +
     67C  ALA*     3.2    14.0    +      -       -      +
     68C  ALA*     3.9    10.8    -      -       -      +
     69C  ARG      3.3     0.4    -      -       -      -
     70C  ALA*     1.3    73.4    -      -       -      +
     72C  TYR*     1.3    64.4    +      -       -      +
     74C  ILE*     3.6    12.3    +      -       +      +
     75C  GLN*     3.3    24.4    +      -       -      +
    134C  ALA*     3.9     8.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 72 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68C  ALA      3.1    12.6    +      -       -      +
     69C  ARG*     3.0    39.9    +      -       -      +
     71C  GLN*     1.3    76.6    -      -       -      +
     73C  ARG*     1.3    62.0    +      -       +      +
     75C  GLN*     3.5     2.1    +      -       -      +
     76C  ARG*     3.0    65.7    +      -       +      +
     79C  ARG*     5.9     0.3    +      -       -      -
    131C  THR*     3.7    37.0    -      -       +      -
    134C  ALA*     3.7    20.3    -      -       +      +
    135C  LEU*     3.7    34.9    -      -       +      +
    138C  TYR*     4.3     8.5    -      +       +      -
----------------------------------------------------------
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Residues in contact with ARG 73 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333B  GLY      4.1     5.5    -      -       -      +
    334B  GLY      5.2     1.3    -      -       -      +
    337B  ARG*     4.9     2.4    -      -       -      +
    338B  ALA*     3.6    24.2    -      -       +      +
    341B  SER*     3.1    36.6    +      -       -      -
     66C  GLU*     4.3     4.9    +      -       -      +
     69C  ARG*     2.9    37.4    +      -       +      +
     70C  ALA*     3.0    27.6    +      -       -      +
     72C  TYR*     1.3    81.8    -      -       +      +
     74C  ILE*     1.3    57.5    +      -       -      +
     76C  ARG*     3.7    30.9    +      -       -      +
     77C  ALA*     3.1    26.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 74 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    335B  ARG*     4.3    20.0    -      -       +      +
    338B  ALA*     3.9    12.8    -      -       +      -
    339B  ASN*     3.4    33.7    -      -       -      +
    342B  LEU*     4.3    18.4    -      -       +      -
     70C  ALA      2.8    22.5    +      -       -      +
     71C  GLN*     3.8    13.2    -      -       +      +
     72C  TYR      3.3     0.4    -      -       -      -
     73C  ARG*     1.3    71.8    -      -       -      +
     75C  GLN*     1.3    68.1    +      -       +      +
     77C  ALA*     3.3    15.0    +      -       -      +
     78C  ASP*     3.1    23.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 75 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71C  GLN      3.3    15.1    +      -       -      +
     72C  TYR      4.0     2.9    -      -       -      +
     74C  ILE*     1.3    79.3    -      -       +      +
     76C  ARG*     1.3    67.9    +      -       -      +
     77C  ALA      3.4     0.2    +      -       -      -
     78C  ASP*     3.5    30.5    +      -       -      +
     79C  ARG*     3.7     2.8    +      -       -      +
    127C  VAL*     4.8     5.4    -      -       -      +
    130C  LEU*     3.9    43.6    -      -       -      +
    131C  THR*     3.4    26.7    +      -       -      +
    134C  ALA*     4.4     7.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 76 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333B  GLY      4.9     4.7    +      -       -      +
     69C  ARG*     5.0     7.1    -      -       -      +
     72C  TYR*     3.0    52.2    +      -       +      +
     73C  ARG*     3.7    30.4    +      -       -      +
     75C  GLN*     1.3    75.8    -      -       -      +
     77C  ALA*     1.3    57.4    +      -       -      +
     79C  ARG*     2.8    43.9    +      -       +      +
     80C  VAL*     3.7     5.6    +      -       -      +
    131C  THR*     3.9    23.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 77 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333B  GLY*     3.3    38.0    +      -       -      +
    335B  ARG*     3.5    34.5    +      -       +      +
     73C  ARG      3.1    10.8    +      -       -      +
     74C  ILE      3.4    10.8    -      -       -      +
     75C  GLN      3.2     0.6    -      -       -      -
     76C  ARG*     1.3    74.1    -      -       -      +
     78C  ASP*     1.3    62.9    +      -       -      +
     79C  ARG      3.1     1.2    +      -       -      -
     80C  VAL*     3.1    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 78 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    335B  ARG*     2.8    31.3    +      -       -      +
     74C  ILE*     3.1    16.8    -      -       -      +
     75C  GLN*     3.5    24.2    +      -       -      +
     76C  ARG      3.3     0.2    -      -       -      -
     77C  ALA*     1.3    73.4    -      -       -      +
     79C  ARG*     1.3    61.6    +      -       -      +
     80C  VAL      3.6     4.1    +      -       -      +
    118C  GLU*     5.7     0.7    -      -       -      +
    119C  TYR*     4.9     5.4    -      -       -      -
    120C  GLU*     5.1     7.6    +      -       -      +
    127C  VAL*     5.0    15.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 79 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72C  TYR*     5.9     0.4    +      -       -      -
     75C  GLN      3.7     3.2    +      -       -      +
     76C  ARG*     2.8    38.4    +      -       +      +
     78C  ASP*     1.3    73.7    -      -       -      +
     80C  VAL*     1.3    60.2    +      -       +      +
    119C  TYR*     3.3    20.4    +      -       -      -
    120C  GLU      4.7     2.6    -      -       -      +
    122C  ASP*     4.4     9.1    +      -       -      +
    127C  VAL*     3.8    29.9    -      -       +      +
    128C  LYS*     3.7    40.2    -      -       -      +
    131C  THR*     4.0    23.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 80 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    332B  ASP      4.3     5.2    -      -       -      +
    333B  GLY*     3.8    22.0    +      -       -      -
     76C  ARG      4.5     3.8    -      -       -      +
     77C  ALA*     3.1    22.4    -      -       -      +
     78C  ASP      4.0     3.5    -      -       -      +
     79C  ARG*     1.3    85.3    -      -       +      +
     81C  PRO*     1.4    77.0    -      -       +      +
     82C  GLY      3.7     1.7    +      -       -      -
    119C  TYR*     3.5     6.4    -      -       -      -
----------------------------------------------------------
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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