Contacts of the helix formed by residues 55 - 79 (chain B) 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 B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    359A  GLN*     5.7     0.3    +      -       -      -
     51B  ALA      2.8    24.4    +      -       -      +
     52B  LEU      4.8     1.5    +      -       -      +
     53B  ASP      5.3     0.7    -      -       -      -
     54B  ASN*     1.3    75.0    -      -       -      +
     56B  ARG*     1.3    76.6    +      -       -      +
     57B  SER*     2.9    23.3    +      -       -      -
     58B  LEU*     4.2     8.5    -      -       +      +
     59B  ARG*     3.3    24.4    +      -       -      +
    152B  LEU*     3.4    37.9    -      -       +      +
    231B  LEU*     4.8     4.7    -      -       -      +
    232B  LEU*     3.6    22.4    +      -       -      +
    233B  LEU      3.9     2.3    +      -       -      -
    234B  GLY*     4.6     4.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 56 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  PRO*     4.3    11.0    -      -       -      +
    352A  ALA*     3.1    32.5    -      -       +      +
    355A  GLU*     2.8    37.1    +      -       +      +
    356A  GLY*     3.5    20.9    -      -       -      +
    359A  GLN*     3.7    21.5    +      -       -      +
     54B  ASN*     2.8    22.2    +      -       -      +
     55B  ASN*     1.3    80.5    +      -       -      +
     57B  SER*     1.3    57.8    +      -       -      +
     58B  LEU      3.3     1.8    -      -       -      -
     59B  ARG*     3.1    27.8    +      -       -      +
     60B  GLN*     2.9    39.0    +      -       -      +
    234B  GLY      2.6    30.7    +      -       -      -
    235B  SER*     5.0     0.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 57 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55B  ASN*     2.9    18.3    +      -       -      -
     56B  ARG*     1.3    72.8    -      -       -      +
     58B  LEU*     1.3    61.0    +      -       -      +
     60B  GLN*     3.5    11.7    +      -       -      +
     61B  THR*     3.2    28.3    +      -       -      +
    148B  ALA*     6.0     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 58 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52B  LEU*     3.9    35.4    -      -       +      +
     55B  ASN*     4.1     8.9    +      -       +      +
     56B  ARG      3.3     0.4    -      -       -      -
     57B  SER*     1.3    76.5    -      -       -      +
     59B  ARG*     1.3    60.0    +      -       -      +
     61B  THR*     2.7    28.2    +      -       -      +
     62B  LEU*     2.9    41.6    +      -       +      +
    145B  ALA      4.2     4.7    -      -       -      +
    148B  ALA*     3.8     8.5    -      -       +      +
    149B  ARG*     3.8    32.1    -      -       +      +
    152B  LEU*     3.8    31.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 59 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348A  ASP      5.7     0.2    -      -       -      -
    352A  ALA*     3.9    22.0    -      -       +      +
    355A  GLU*     3.8     5.4    +      -       -      -
     53B  ASP      3.0    27.1    +      -       -      -
     54B  ASN*     3.6    19.9    +      -       -      +
     55B  ASN      3.3    15.2    +      -       -      +
     56B  ARG*     3.1    42.6    +      -       -      +
     58B  LEU*     1.3    80.2    -      -       -      +
     60B  GLN*     1.3    55.6    +      -       -      +
     62B  LEU*     3.4    12.3    +      -       +      +
     63B  LEU*     3.0    45.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 60 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    349A  SER*     3.9    16.9    +      -       -      +
    352A  ALA*     3.6    19.1    -      -       +      +
    353A  ALA*     3.5    36.1    +      -       -      +
    356A  GLY*     5.6     1.4    -      -       -      -
     56B  ARG*     2.9    25.7    +      -       -      +
     57B  SER*     3.8    10.1    +      -       -      +
     59B  ARG*     1.3    76.4    -      -       -      +
     61B  THR*     1.3    56.9    +      -       +      +
     63B  LEU*     3.4     8.4    +      -       -      +
     64B  ASP*     3.0    30.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 61 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57B  SER      3.2    13.1    +      -       -      +
     58B  LEU*     2.7    36.1    +      -       -      +
     60B  GLN*     1.3    74.1    -      -       +      +
     62B  LEU*     1.3    64.3    +      -       -      +
     64B  ASP*     2.9    27.7    -      -       -      +
     65B  ILE*     3.5    11.1    +      -       -      +
    141B  SER      5.1     0.7    -      -       -      +
    144B  ALA*     5.1     3.1    -      -       -      +
    145B  ALA*     4.5    10.1    -      -       -      +
    148B  ALA*     3.6    19.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 62 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52B  LEU      5.4     3.8    -      -       -      +
     58B  LEU*     2.9    48.7    +      -       +      +
     59B  ARG*     3.7     9.6    -      -       -      +
     61B  THR*     1.3    76.8    +      -       -      +
     63B  LEU*     1.3    58.6    +      -       +      +
     65B  ILE*     3.2    36.0    -      -       +      +
     66B  GLU*     3.5     6.1    +      -       -      +
    145B  ALA*     4.2    17.9    -      -       +      +
    149B  ARG*     6.5     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 63 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    345A  ALA*     3.6    18.8    -      -       -      +
    348A  ASP*     3.4    55.6    -      -       +      +
    349A  SER*     3.5    10.3    -      -       -      +
    352A  ALA*     4.5     0.9    -      -       +      -
     59B  ARG*     3.0    39.1    +      -       +      +
     60B  GLN      3.8     5.8    -      -       -      +
     61B  THR      3.3     0.2    -      -       -      -
     62B  LEU*     1.3    78.3    -      -       +      +
     64B  ASP*     1.3    56.8    +      -       -      +
     65B  ILE      3.3     0.4    -      -       -      -
     66B  GLU*     3.2    18.5    -      -       +      +
     67B  ALA*     3.2    18.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 64 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    349A  SER*     6.3     1.3    -      -       -      -
     60B  GLN*     3.0    20.3    +      -       -      +
     61B  THR*     2.9    27.2    -      -       -      +
     63B  LEU*     1.3    74.1    -      -       -      +
     65B  ILE*     1.3    59.8    +      -       -      +
     66B  GLU      3.3     0.2    -      -       -      -
     67B  ALA*     3.8    13.9    -      -       +      +
     68B  ALA*     3.2    23.7    +      -       -      +
    141B  SER*     4.1    11.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 65 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61B  THR      3.5     8.5    +      -       -      +
     62B  LEU*     3.2    26.6    +      -       +      +
     64B  ASP*     1.3    77.8    +      -       -      +
     66B  GLU*     1.3    55.9    +      -       -      +
     68B  ALA*     3.0     3.5    +      -       -      +
     69B  ARG*     2.8    38.8    +      -       -      +
    138B  TYR*     3.7    24.6    -      -       +      +
    141B  SER*     3.8    22.9    -      -       -      +
    142B  GLU*     4.0    22.7    -      -       +      +
    145B  ALA*     3.5    24.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 66 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    341A  SER*     4.8     8.2    -      -       -      +
    344A  GLU*     5.0     9.8    -      -       +      +
    345A  ALA*     3.7    16.9    -      -       +      +
     62B  LEU      3.5     3.9    +      -       -      +
     63B  LEU*     3.2    26.1    +      -       +      +
     65B  ILE*     1.3    81.7    -      -       -      +
     67B  ALA*     1.3    60.8    +      -       -      +
     69B  ARG*     2.7    46.1    +      -       -      +
     70B  ALA*     3.3    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 67 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342A  LEU*     3.6    24.1    -      -       +      +
    345A  ALA*     3.8     8.7    -      -       +      +
    346A  ARG*     5.4     5.6    -      -       +      -
     63B  LEU      3.2     5.6    +      -       -      +
     64B  ASP*     3.8    21.5    -      -       +      +
     66B  GLU*     1.3    77.8    -      -       -      +
     68B  ALA*     1.3    56.7    +      -       -      +
     70B  ALA*     3.1     6.1    +      -       -      +
     71B  GLN*     3.0    37.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 68 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64B  ASP      3.2    15.9    +      -       -      +
     65B  ILE      3.0     5.0    +      -       -      +
     67B  ALA*     1.3    79.5    -      -       -      +
     69B  ARG*     1.3    59.5    +      -       -      +
     71B  GLN*     3.5    12.7    +      -       -      +
     72B  TYR*     3.2    16.6    +      -       -      +
    134B  ALA      4.4     2.3    -      -       -      +
    137B  GLN*     4.4     2.9    -      -       +      +
    138B  TYR*     3.6    28.8    +      -       -      +
    141B  SER*     3.6    21.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 69 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    337A  ARG*     5.2     1.8    -      -       -      +
    341A  SER*     6.2     1.4    -      -       -      -
     65B  ILE*     2.8    19.9    +      -       -      +
     66B  GLU*     2.7    50.2    +      -       -      +
     68B  ALA*     1.3    70.2    -      -       -      +
     70B  ALA*     1.3    67.3    +      -       -      +
     72B  TYR*     3.2    10.5    +      -       +      +
     73B  ARG*     3.0    63.4    +      -       +      +
    138B  TYR*     3.5    41.3    +      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 70 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    338A  ALA*     3.5    25.9    -      -       -      +
    341A  SER*     4.4     7.6    -      -       -      -
    342A  LEU*     3.7    19.1    -      -       +      +
     66B  GLU      3.3    10.9    +      -       -      +
     67B  ALA      3.1     9.9    +      -       -      +
     69B  ARG*     1.3    79.2    -      -       -      +
     71B  GLN*     1.3    58.8    +      -       -      +
     73B  ARG*     3.0    12.1    +      -       -      +
     74B  ILE*     2.9    33.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 71 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342A  LEU*     4.2    18.2    -      -       +      +
    346A  ARG*     5.7     3.4    +      -       -      +
     67B  ALA*     3.0    23.3    +      -       -      +
     68B  ALA*     3.8    10.6    -      -       -      +
     69B  ARG      3.3     0.4    -      -       -      -
     70B  ALA*     1.3    74.8    -      -       -      +
     72B  TYR*     1.3    62.0    +      -       -      +
     74B  ILE*     3.5    15.7    +      -       +      +
     75B  GLN*     3.4    21.3    +      -       -      +
    134B  ALA*     4.2     7.5    -      -       +      +
    137B  GLN*     5.8     4.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 72 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68B  ALA      3.2    13.2    +      -       -      +
     69B  ARG*     3.2    17.2    +      -       +      +
     71B  GLN*     1.3    75.9    -      -       -      +
     73B  ARG*     1.3    65.7    +      -       +      +
     75B  GLN*     3.2     4.0    +      -       -      +
     76B  ARG*     2.8    63.1    +      -       +      +
    131B  THR*     3.6    26.7    -      -       +      +
    134B  ALA*     3.7    19.9    -      -       +      +
    135B  LEU*     3.5    52.3    -      -       +      +
    138B  TYR*     4.6     5.8    -      +       +      -
----------------------------------------------------------
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Residues in contact with ARG 73 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333A  GLY      4.9     0.7    -      -       -      +
    334A  GLY      4.1     6.5    -      -       -      +
    337A  ARG*     3.1    37.5    -      -       -      +
    338A  ALA*     4.0    13.2    -      -       +      -
     69B  ARG*     3.0    58.6    +      -       -      +
     70B  ALA*     3.0    10.2    +      -       -      +
     72B  TYR*     1.3    84.5    -      -       +      +
     74B  ILE*     1.3    56.3    +      -       -      +
     76B  ARG*     3.6    41.4    +      -       -      +
     77B  ALA*     2.9    28.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 74 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    335A  ARG*     4.0    24.0    +      -       +      +
    338A  ALA*     3.6    19.5    -      -       +      +
    339A  ASN*     3.5    25.1    -      -       -      +
    342A  LEU*     4.9    11.0    -      -       +      -
     70B  ALA      2.9    23.0    +      -       -      +
     71B  GLN*     3.8    19.1    -      -       +      +
     72B  TYR      3.2     0.2    -      -       -      -
     73B  ARG*     1.3    75.7    -      -       -      +
     75B  GLN*     1.3    62.4    +      -       +      +
     77B  ALA*     3.6     7.7    -      -       -      +
     78B  ASP*     3.5    17.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 75 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71B  GLN      3.4     9.1    +      -       -      +
     72B  TYR      3.2     7.7    +      -       -      +
     74B  ILE*     1.3    77.7    -      -       +      +
     76B  ARG*     1.3    59.2    +      -       -      +
     77B  ALA      3.2     0.4    -      -       -      -
     78B  ASP*     3.1    36.4    +      -       -      +
     79B  ARG*     3.7     2.4    +      -       -      +
    127B  VAL*     3.9     8.7    -      -       -      +
    130B  LEU*     3.2    52.9    -      -       +      +
    131B  THR*     3.3    23.4    +      -       -      +
    134B  ALA*     4.2     9.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 76 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333A  GLY      4.7    12.5    +      -       -      +
    334A  GLY*     5.5     3.0    +      -       -      -
     72B  TYR*     2.8    49.4    +      -       +      +
     73B  ARG*     3.6    41.7    +      -       -      +
     74B  ILE      3.4     0.2    -      -       -      -
     75B  GLN*     1.3    76.9    -      -       -      +
     77B  ALA*     1.3    60.4    +      -       -      +
     79B  ARG*     3.3    25.1    +      -       -      +
     80B  VAL*     4.3     8.0    +      -       +      +
    131B  THR*     3.8    19.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 77 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333A  GLY*     3.5    43.4    +      -       -      +
    335A  ARG*     3.9    30.7    +      -       +      +
     73B  ARG      2.9    20.5    +      -       -      +
     74B  ILE      3.6     8.3    -      -       -      +
     75B  GLN      3.2     0.2    -      -       -      -
     76B  ARG*     1.3    75.7    -      -       -      +
     78B  ASP*     1.3    61.5    +      -       -      +
     79B  ARG      3.4     0.3    +      -       -      -
     80B  VAL      3.5    16.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 78 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    335A  ARG*     5.3    14.4    +      -       -      +
     74B  ILE      3.5     7.8    +      -       -      +
     75B  GLN*     3.1    30.9    +      -       -      +
     77B  ALA*     1.3    77.4    -      -       -      +
     79B  ARG*     1.3    60.7    +      -       -      +
     80B  VAL      3.4     4.2    +      -       -      +
    119B  TYR*     4.4     8.8    -      -       -      -
    120B  GLU*     5.2     8.7    +      -       -      +
    127B  VAL*     4.0    22.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 79 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75B  GLN      4.2     0.2    -      -       -      +
     76B  ARG*     3.3    19.1    +      -       -      +
     77B  ALA      3.2     1.0    -      -       -      -
     78B  ASP*     1.3    78.3    -      -       -      +
     80B  VAL*     1.3    63.4    +      -       +      +
    119B  TYR*     3.1    22.1    +      -       -      -
    120B  GLU      5.0     1.6    -      -       -      +
    122B  ASP*     4.7    11.1    +      -       +      +
    127B  VAL*     3.7    18.2    -      -       +      +
    128B  LYS*     3.2    51.7    -      -       -      +
    131B  THR*     3.6    37.1    -      -       -      +
----------------------------------------------------------
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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