Contacts of the helix formed by residues 55 - 77 (chain B) in PDB entry 2QJ3


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 ASP 55 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51B  GLU      4.0     0.2    +      -       -      -
     52B  GLU*     3.4    18.0    +      -       -      +
     53B  ILE      2.9     3.7    +      -       -      +
     54B  THR*     1.3    76.2    -      -       -      +
     56B  THR*     1.3    57.0    +      -       -      +
     57B  ALA*     3.0    20.0    +      -       -      +
     58B  VAL*     2.9    21.4    +      -       +      +
     59B  ALA*     2.7    33.2    +      -       -      +
    121B  ALA*     5.1     5.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 56 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9B  GLN*     3.2    30.1    +      -       -      +
     54B  THR      3.9     2.3    +      -       -      -
     55B  ASP*     1.3    75.7    +      -       -      +
     57B  ALA*     1.3    62.1    +      -       -      +
     58B  VAL      3.0     1.4    +      -       -      -
     59B  ALA      4.3     0.7    -      -       -      +
     60B  GLN*     2.9    58.7    +      -       -      +
    117B  GLY*     3.6     9.5    -      -       -      +
    120B  MET*     4.7     3.8    -      -       +      -
    121B  ALA*     5.3     8.0    -      -       -      -
    190B  ALA*     3.8    16.3    +      -       -      +
    193B  PHE*     3.6    25.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 57 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39B  LEU*     3.7    12.0    -      -       +      +
     55B  ASP*     3.0    16.5    +      -       -      +
     56B  THR*     1.3    78.4    -      -       -      +
     58B  VAL*     1.3    59.0    +      -       +      +
     61B  PRO*     3.3    21.0    -      -       -      +
    114B  ALA      4.6     4.0    -      -       -      +
    117B  GLY      3.5    21.4    +      -       -      +
    118B  ALA*     3.9    16.6    -      -       +      +
    121B  ALA*     4.8     6.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 58 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39B  LEU*     4.7    17.5    -      -       +      -
     41B  LEU*     5.2     1.4    -      -       +      +
     44B  LEU*     3.6    36.3    -      -       +      -
     52B  GLU*     3.8    15.3    -      -       +      +
     53B  ILE*     4.1    15.0    -      -       +      +
     55B  ASP*     2.9    31.5    +      -       +      +
     57B  ALA*     1.3    78.7    -      -       +      +
     59B  ALA*     1.3    66.4    +      -       -      +
     60B  GLN      3.3     1.6    -      -       -      -
     61B  PRO*     3.2    14.7    -      -       -      +
     62B  LEU*     3.3    17.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 59 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9B  GLN*     3.9    28.3    -      -       +      +
     12B  GLN*     4.0    17.9    -      -       -      +
     53B  ILE*     3.3    23.2    +      -       -      +
     54B  THR*     5.0     0.2    -      -       -      -
     55B  ASP      2.7    14.7    +      -       -      +
     56B  THR      4.2     0.7    -      -       -      +
     58B  VAL*     1.3    72.8    -      -       -      +
     60B  GLN*     1.3    63.5    +      -       -      +
     62B  LEU*     3.7     4.8    -      -       -      +
     63B  ILE*     3.0    33.2    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
      9B  GLN*     3.5    20.7    -      -       -      +
     56B  THR*     2.9    35.0    +      -       -      +
     59B  ALA*     1.3    77.4    -      -       -      +
     61B  PRO*     1.4    68.4    -      -       +      +
     62B  LEU      3.4     0.2    +      -       -      -
     63B  ILE*     4.1     1.3    -      -       -      +
     64B  VAL*     3.4    23.7    +      -       -      +
     92B  VAL*     3.4    27.6    -      -       +      +
    113B  ALA*     3.4    16.6    -      -       -      +
    116B  ARG*     3.3    29.9    +      -       -      +
    117B  GLY*     3.2    17.0    -      -       -      -
    120B  MET*     3.2    21.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 61 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37B  ALA*     5.8     0.7    -      -       +      -
     39B  LEU*     3.8    16.8    -      -       +      -
     41B  LEU*     4.5    10.3    -      -       +      -
     57B  ALA      3.3    21.8    -      -       -      +
     58B  VAL      3.2    13.5    -      -       -      +
     60B  GLN*     1.4    96.5    -      -       +      +
     62B  LEU*     1.3    55.2    +      -       -      +
     64B  VAL*     3.6     2.6    +      -       -      +
     65B  ALA*     3.0    27.9    +      -       -      +
    110B  VAL*     3.7    17.6    -      -       +      +
    113B  ALA*     3.7    19.0    -      -       +      +
    114B  ALA*     3.7    22.7    -      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     12B  GLN*     4.8     1.3    -      -       +      -
     16B  MET*     3.5    32.6    -      -       +      +
     17B  LEU*     4.0    14.3    -      -       +      +
     41B  LEU*     4.0    23.6    -      -       +      +
     44B  LEU*     4.0    14.1    -      -       +      +
     45B  GLY*     3.8    26.7    -      -       -      +
     53B  ILE*     3.3    35.0    -      -       +      -
     58B  VAL*     3.3    19.8    +      -       +      +
     59B  ALA      3.7     2.5    -      -       -      +
     60B  GLN      3.2     0.4    -      -       -      -
     61B  PRO*     1.3    76.9    -      -       -      +
     63B  ILE*     1.3    59.5    +      -       -      +
     65B  ALA*     3.3     5.0    +      -       -      +
     66B  ALA*     3.0    24.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 63 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7B  PRO      3.3    28.3    -      -       -      +
      8B  GLY*     4.1     5.4    -      -       -      +
      9B  GLN*     3.9    23.8    -      -       +      +
     12B  GLN*     3.6    27.4    -      -       +      +
     16B  MET*     3.7    10.8    -      -       +      -
     59B  ALA*     3.0    29.8    +      -       +      +
     60B  GLN*     4.1     4.3    -      -       -      +
     62B  LEU*     1.3    73.1    -      -       +      +
     64B  VAL*     1.3    70.2    +      -       +      +
     66B  ALA*     3.2     4.2    +      -       -      +
     67B  THR*     2.9    24.6    +      -       -      +
     92B  VAL*     5.4     4.9    -      -       +      -
     93B  GLY*     5.5     0.4    -      -       -      +
    270B  PRO*     3.8    30.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 64 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60B  GLN      3.4    16.9    +      -       -      +
     61B  PRO      3.7     2.9    -      -       -      +
     62B  LEU      3.3     0.4    -      -       -      -
     63B  ILE*     1.3    77.9    -      -       +      +
     65B  ALA*     1.3    54.4    +      -       -      +
     67B  THR*     3.1     4.2    +      -       -      -
     68B  LEU*     2.8    47.7    +      -       +      +
     92B  VAL*     4.1    16.8    -      -       +      +
     93B  GLY      5.3     0.4    -      -       -      +
     95B  ILE*     4.3     1.6    -      -       +      -
     96B  ALA*     4.0    30.7    -      -       +      +
    109B  ALA*     4.3     3.6    -      -       +      +
    110B  VAL*     3.8    33.9    -      -       +      +
    113B  ALA*     3.7    15.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 65 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17B  LEU*     4.7    11.7    -      -       +      -
     30B  ILE*     5.3     4.3    -      -       +      -
     33B  TRP*     3.9    28.2    -      -       +      -
     41B  LEU*     5.3     6.7    -      -       +      -
     61B  PRO      3.0    16.5    +      -       -      +
     62B  LEU*     3.3    11.9    -      -       -      +
     64B  VAL*     1.3    77.1    -      -       -      +
     66B  ALA*     1.3    56.9    +      -       -      +
     68B  LEU*     3.3     1.9    +      -       -      +
     69B  LEU*     2.9    37.5    +      -       -      +
    110B  VAL*     4.6     4.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 66 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16B  MET*     3.5    31.6    -      -       +      +
     17B  LEU*     4.1    16.7    -      -       +      +
     20B  TRP*     4.8     4.3    -      -       +      -
     62B  LEU      3.0     5.6    +      -       -      +
     63B  ILE      3.4     7.9    -      -       -      +
     65B  ALA*     1.3    75.6    -      -       -      +
     67B  THR*     1.3    62.1    +      -       -      +
     69B  LEU*     3.7     3.6    +      -       -      +
     70B  ALA*     3.3    16.3    +      -       -      +
    269B  PRO*     3.3    34.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 67 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6B  ALA*     3.7    15.2    -      -       +      +
      7B  PRO*     3.5    13.3    +      -       -      +
     63B  ILE*     2.9    12.6    +      -       -      +
     64B  VAL      3.5     7.0    -      -       -      -
     66B  ALA*     1.3    76.4    -      -       -      +
     68B  LEU*     1.3    58.0    +      -       -      +
     70B  ALA*     3.3     4.9    +      -       -      +
     71B  HIS*     2.9    25.1    +      -       -      +
     96B  ALA*     3.8    11.1    -      -       +      +
    100B  ILE*     3.7    27.4    -      -       +      -
    268B  PHE*     3.5    21.8    -      -       +      +
    269B  PRO      2.8    22.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 68 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33B  TRP*     4.7     8.3    -      -       +      -
     64B  VAL*     2.8    42.1    +      -       +      +
     65B  ALA*     4.0     3.4    -      -       -      +
     67B  THR*     1.3    70.9    -      -       -      +
     69B  LEU*     1.3    59.2    +      -       -      +
     71B  HIS*     3.2     6.5    +      -       +      +
     72B  GLN*     2.9    38.6    +      -       +      +
     96B  ALA*     3.5    28.9    -      -       +      +
     99B  ALA*     3.7    11.0    -      -       +      -
    100B  ILE*     4.1    13.7    -      -       +      +
    106B  ALA*     3.9    39.3    -      -       +      +
    109B  ALA*     4.1     8.3    -      -       +      -
    110B  VAL*     4.1     4.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 69 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17B  LEU*     4.3     7.4    -      -       +      -
     20B  TRP*     3.8    38.8    -      -       +      +
     23B  LEU*     4.4     7.3    -      -       +      +
     26B  ALA*     3.7    28.5    -      -       +      +
     29B  GLN*     4.2     4.3    -      -       +      +
     30B  ILE*     3.7    28.0    -      -       +      -
     33B  TRP*     4.1    19.5    -      -       +      -
     65B  ALA      2.9    19.5    +      -       -      +
     66B  ALA      4.0     3.8    -      -       -      +
     68B  LEU*     1.3    76.3    -      -       -      +
     70B  ALA*     1.3    62.3    +      -       -      +
     72B  GLN*     3.6    18.0    +      -       -      +
     73B  GLU*     3.3    20.8    +      -       -      +
     76B  ARG*     5.2     1.2    +      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
     20B  TRP*     3.7    27.1    -      -       +      -
     66B  ALA      3.3    12.2    +      -       -      +
     67B  THR      3.5     8.1    -      -       -      +
     68B  LEU      3.2     0.4    -      -       -      -
     69B  LEU*     1.3    78.0    -      -       -      +
     71B  HIS*     1.3    64.7    +      -       -      +
     73B  GLU*     3.3     4.7    +      -       -      +
     74B  LEU*     3.1    21.7    +      -       -      +
    268B  PHE*     3.6    11.4    -      -       +      -
    269B  PRO*     3.6    23.6    -      -       +      -
    290B  VAL*     4.7     1.1    -      -       +      -
    296B  LEU*     4.2     4.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 71 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4B  LEU*     4.4     7.2    -      -       +      -
     67B  THR      2.9    16.3    +      -       -      +
     68B  LEU*     3.2    10.3    +      -       +      +
     70B  ALA*     1.3    77.7    -      -       -      +
     72B  GLN*     1.3    61.9    +      -       +      +
     74B  LEU*     3.2    17.9    +      -       +      +
     75B  ALA*     2.9    37.5    +      -       +      +
     99B  ALA      5.3     0.7    -      -       -      -
    100B  ILE*     3.5    60.8    +      -       +      +
    268B  PHE*     3.8    16.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 72 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29B  GLN*     2.7    42.9    +      -       -      -
     33B  TRP*     4.8     2.2    -      -       -      -
     68B  LEU*     2.9    24.7    +      -       +      +
     69B  LEU*     3.8    12.6    -      -       -      +
     70B  ALA      3.3     0.2    -      -       -      -
     71B  HIS*     1.3    81.0    -      -       +      +
     73B  GLU*     1.3    57.3    +      -       -      +
     75B  ALA*     3.4     7.5    +      -       -      +
     76B  ARG*     3.0    51.1    +      -       -      +
    106B  ALA*     3.8    21.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 73 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20B  TRP*     4.8     3.1    -      -       +      -
     23B  LEU*     3.6    30.3    -      -       +      +
     24B  PRO*     4.9     1.6    -      -       -      +
     69B  LEU      3.3    12.0    +      -       -      +
     70B  ALA*     3.5    10.8    -      -       -      +
     71B  HIS      3.2     0.2    -      -       -      -
     72B  GLN*     1.3    77.4    -      -       -      +
     74B  LEU*     1.3    63.1    +      -       -      +
     76B  ARG*     2.5    41.4    +      -       -      +
     77B  ARG*     3.2    52.7    +      -       -      +
    293B  PRO*     5.0     2.0    -      -       +      -
    296B  LEU*     3.7    18.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 74 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4B  LEU*     4.3    18.6    -      -       +      -
     70B  ALA      3.1    13.1    +      -       -      +
     71B  HIS*     3.2    19.9    +      -       +      +
     73B  GLU*     1.3    76.9    -      -       -      +
     75B  ALA*     1.3    63.1    +      -       -      +
     77B  ARG*     3.4     6.4    +      -       -      +
     78B  CYS      3.4    14.7    +      -       -      -
     79B  VAL*     3.8    27.1    +      -       +      -
     80B  LEU*     5.1    12.4    +      -       +      +
    266B  VAL*     5.3     2.5    -      -       +      -
    268B  PHE*     3.7    26.0    -      -       +      -
    296B  LEU*     3.8    18.3    -      -       +      +
    299B  LEU*     3.8    29.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 75 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71B  HIS*     2.9    29.0    +      -       +      +
     72B  GLN*     3.7     7.9    -      -       -      +
     73B  GLU      3.3     0.2    -      -       -      -
     74B  LEU*     1.3    76.4    -      -       -      +
     76B  ARG*     1.3    64.4    +      -       -      +
     78B  CYS*     3.1    17.6    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     23B  LEU*     4.3     9.5    -      -       -      +
     24B  PRO*     4.4    24.9    +      -       -      +
     29B  GLN*     5.3     2.2    -      -       -      +
     69B  LEU      5.2     0.8    +      -       -      -
     72B  GLN*     3.0    49.6    +      -       -      +
     73B  GLU*     2.5    40.1    +      -       -      +
     74B  LEU      3.4     0.2    -      -       -      -
     75B  ALA*     1.3    76.9    -      -       -      +
     77B  ARG*     1.3    61.0    +      -       +      +
     78B  CYS*     3.3    10.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 77 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23B  LEU*     6.2     0.2    -      -       -      +
     73B  GLU*     3.2    41.1    +      -       -      +
     74B  LEU*     3.9     7.0    -      -       -      +
     75B  ALA      3.3     0.8    -      -       -      -
     76B  ARG*     1.3    75.4    -      -       +      +
     78B  CYS*     1.3    69.3    +      -       -      +
     79B  VAL*     3.3    16.5    +      -       +      +
    293B  PRO*     3.8    22.8    +      -       -      +
    294B  ALA*     5.3     0.4    -      -       -      +
    296B  LEU*     3.7    31.8    +      -       -      +
    297B  ASP*     2.8    31.3    +      -       -      +
----------------------------------------------------------
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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