Contacts of the helix formed by residues 34 - 57 (chain B) in PDB entry 4J00


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 ARG 34 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  HIS      4.5     0.4    -      -       -      -
     69A  HIS*     4.3    14.7    +      -       +      +
     32B  GLY      3.5     2.2    +      -       -      -
     33B  HIS*     1.3    73.5    -      -       -      +
     35B  HIS*     1.3    64.6    +      -       -      +
     36B  GLY*     3.0    10.3    +      -       -      +
     37B  ALA*     3.3    34.3    +      -       -      +
     38B  PHE*     3.2    17.7    +      -       -      +
     40B  ASP*     5.3     2.4    +      -       -      -
     95B  LEU*     3.1    27.3    -      -       -      +
     99B  GLU*     5.7     2.2    +      -       -      -
    102B  TYR*     3.1    32.9    +      -       +      +
    163B  HIS*     6.1     1.2    -      -       -      -
    176B  MET*     5.0    17.6    -      -       -      +
    182B  LEU*     5.4     6.5    -      -       +      -
    185B  HIS*     3.6    23.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 35 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46A  ALA*     3.5    20.3    -      -       +      +
     50A  ILE*     4.0    11.3    -      -       +      +
     68A  HIS*     3.1    26.5    +      -       +      +
     69A  HIS      4.9     1.2    +      -       -      +
     70A  LEU*     3.5    19.3    -      -       +      +
     28B  MET*     3.4    37.0    -      -       -      -
     33B  HIS      3.4     2.0    +      -       -      -
     34B  ARG*     1.3    71.3    -      -       -      +
     36B  GLY*     1.3    63.8    +      -       -      +
     38B  PHE*     3.6     2.8    -      -       -      +
     39B  LEU*     3.0    59.2    +      -       +      +
     15C    A      4.1    16.7    -      -       -      -
     16C    C      4.9     4.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 36 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  HIS      4.9     0.4    +      -       -      -
     69A  HIS*     5.2     4.6    +      -       -      -
     34B  ARG*     3.0     8.7    -      -       -      +
     35B  HIS*     1.3    82.3    +      -       -      +
     37B  ALA*     1.3    54.7    +      -       -      +
     39B  LEU*     3.1     7.5    +      -       -      +
     40B  ASP*     2.7    39.2    +      -       -      +
     15C    A      5.3     0.2    -      -       -      -
     16C    C      3.8    28.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 37 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34B  ARG*     3.3    26.7    +      -       -      +
     36B  GLY*     1.3    71.3    -      -       -      +
     38B  PHE*     1.3    59.2    +      -       -      +
     40B  ASP*     3.6    15.5    -      -       +      +
     41B  ALA*     2.8    26.9    +      -       -      +
     93B  LYS      5.2     5.0    -      -       -      +
     94B  MET*     5.6     0.6    -      -       -      -
     95B  LEU*     3.2    46.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 38 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  MET*     5.1    13.9    -      -       +      +
     42A  ALA*     4.1    19.1    -      -       +      -
     45A  ALA*     5.0     1.1    -      -       +      -
     46A  ALA*     3.9    18.2    -      -       +      -
     20B  MET*     5.6     2.5    -      -       -      -
     23B  LEU*     5.3     4.7    -      -       +      -
     24B  ALA*     3.8    35.0    -      -       +      -
     27B  ALA*     5.0    14.4    -      -       +      -
     28B  MET*     3.8    25.4    -      -       +      -
     33B  HIS*     5.4     3.6    -      -       +      +
     34B  ARG      3.2    12.2    +      -       -      +
     35B  HIS*     3.6    11.2    -      -       -      +
     36B  GLY      3.1     0.6    -      -       -      -
     37B  ALA*     1.3    74.7    -      -       -      +
     39B  LEU*     1.3    89.8    +      -       +      +
     41B  ALA*     3.1    17.2    +      -       +      +
     42B  ALA*     3.2    10.6    +      -       +      +
     95B  LEU*     4.7     4.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 39 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42A  ALA*     4.8     2.0    -      -       +      +
     43A  ALA*     4.4    22.2    -      -       +      +
     46A  ALA*     4.2     5.8    -      -       +      -
     35B  HIS*     3.0    47.1    +      -       +      +
     36B  GLY*     3.3     9.4    -      -       -      +
     38B  PHE*     1.3    96.6    -      -       +      +
     40B  ASP*     1.3    64.5    +      -       -      +
     42B  ALA*     3.2    17.8    +      -       +      +
     43B  ALA*     3.3    10.6    +      -       -      +
     15C    A      3.5    21.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 40 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34B  ARG*     5.3     2.6    +      -       -      -
     36B  GLY*     2.7    30.9    +      -       -      +
     37B  ALA*     3.6    15.2    -      -       +      +
     39B  LEU*     1.3    80.9    -      -       -      +
     41B  ALA*     1.3    59.9    +      -       -      +
     43B  ALA*     3.0    21.8    +      -       -      +
     44B  THR*     3.2    14.4    -      -       -      +
     93B  LYS*     3.7    43.4    +      -       +      +
     16C    C      4.6     7.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 41 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  ASP*     4.6    14.8    -      -       -      +
     20A  MET*     4.7    11.7    -      -       +      +
     37B  ALA      2.8    15.2    +      -       -      +
     38B  PHE*     3.1    15.9    +      -       +      +
     40B  ASP*     1.3    77.0    -      -       -      +
     42B  ALA*     1.3    61.4    +      -       -      +
     44B  THR*     3.3    12.3    -      -       -      +
     45B  ALA*     3.1    25.0    +      -       -      +
     93B  LYS      4.9     0.6    +      -       -      -
     94B  MET*     4.7    10.9    -      -       +      +
     95B  LEU*     5.7     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 42 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  MET*     3.7    23.7    -      -       +      +
     38A  PHE*     3.3    25.6    -      -       +      -
     39A  LEU*     4.4     6.5    -      -       +      +
     42A  ALA*     3.6    31.0    -      -       +      -
     38B  PHE*     3.2     8.2    +      -       +      +
     39B  LEU*     3.2    13.3    +      -       -      +
     41B  ALA*     1.3    77.6    -      -       -      +
     43B  ALA*     1.3    63.0    +      -       -      +
     45B  ALA*     3.8     2.0    -      -       -      +
     46B  ALA*     3.6     5.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 43 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  LEU*     5.1    13.7    -      -       +      -
     39B  LEU      3.3     6.4    +      -       -      +
     40B  ASP*     3.0    16.2    +      -       -      +
     42B  ALA*     1.3    75.8    -      -       -      +
     44B  THR*     1.3    59.0    +      -       -      +
     45B  ALA      3.1     4.3    -      -       -      -
     46B  ALA*     3.1    20.9    +      -       -      +
     47B  LYS*     3.1    29.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 44 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21A  LEU*     5.7     0.2    -      -       -      +
     40B  ASP      3.2    17.3    -      -       -      +
     41B  ALA*     3.3    16.4    -      -       -      +
     43B  ALA*     1.3    72.7    -      -       -      +
     45B  ALA*     1.3    60.5    +      -       -      +
     47B  LYS*     3.6    18.8    -      -       -      +
     48B  CYS*     3.1    32.7    +      -       -      -
     92B  LEU*     4.0    27.2    -      -       +      +
     93B  LYS*     4.3    11.0    -      -       +      +
     94B  MET*     4.3    22.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 45 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  MET*     4.1    23.8    -      -       +      -
     21A  LEU*     3.5    25.5    -      -       +      +
     24A  ALA*     3.3    30.4    -      -       +      +
     25A  PHE*     4.5     1.2    -      -       -      -
     38A  PHE*     4.6     0.9    -      -       +      -
     41B  ALA      3.1    17.4    +      -       -      +
     42B  ALA      3.8     7.0    -      -       -      +
     43B  ALA      3.1     0.4    -      -       -      -
     44B  THR*     1.3    80.3    -      -       -      +
     46B  ALA*     1.3    60.0    +      -       -      +
     48B  CYS*     3.7     5.9    +      -       -      +
     49B  ALA*     3.9     3.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 46 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24A  ALA*     4.5     3.6    -      -       -      -
     28A  MET*     3.7    28.4    -      -       +      +
     35A  HIS*     5.6     2.0    -      -       +      -
     38A  PHE*     3.8    20.2    -      -       +      -
     39A  LEU*     4.4     8.5    -      -       +      -
     42B  ALA      3.6     3.0    +      -       -      +
     43B  ALA      3.1     9.0    +      -       -      +
     45B  ALA*     1.3    78.5    -      -       -      +
     47B  LYS*     1.3    60.2    +      -       +      +
     48B  CYS      3.2     0.9    -      -       -      -
     49B  ALA*     3.1    20.6    +      -       -      +
     50B  ILE*     3.2    18.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 47 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43B  ALA*     3.1    18.8    +      -       +      +
     44B  THR*     3.6    30.0    +      -       -      +
     45B  ALA      3.4     0.4    -      -       -      -
     46B  ALA*     1.3    76.4    -      -       +      +
     48B  CYS*     1.3    60.4    +      -       -      +
     49B  ALA      3.3     0.2    -      -       -      -
     50B  ILE*     3.4    12.6    +      -       +      +
     51B  TYR*     3.1    25.6    +      -       -      +
     74B  ARG*     5.2     8.5    -      -       -      +
     78B  ILE*     3.6    39.4    -      -       +      +
     81B  GLU*     3.5    31.3    +      -       -      -
     82B  VAL*     4.6     4.4    -      -       +      +
     92B  LEU*     5.3     4.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 48 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7A  LEU*     5.3     6.1    -      -       +      -
     11A  LEU*     4.6    21.5    -      -       -      -
     21A  LEU*     3.7    29.8    -      -       +      -
     25A  PHE*     4.2     8.3    -      -       +      -
     44B  THR*     3.1    26.2    +      -       -      -
     45B  ALA      3.8     0.7    -      -       -      +
     46B  ALA      3.2     0.4    -      -       -      -
     47B  LYS*     1.3    76.8    -      -       -      +
     49B  ALA*     1.3    59.7    +      -       -      +
     51B  TYR*     3.4     6.7    +      -       -      +
     52B  MET*     2.9    33.9    +      -       -      +
     82B  VAL*     5.5     7.2    -      -       -      -
     92B  LEU*     6.2     2.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 49 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24A  ALA      4.6     6.7    -      -       -      +
     25A  PHE*     4.1    15.0    -      -       +      -
     28A  MET*     4.5    14.4    -      -       -      -
     29A  ARG*     3.7    24.0    -      -       +      -
     45B  ALA      3.9     3.0    +      -       -      +
     46B  ALA*     3.1    14.1    +      -       -      +
     48B  CYS*     1.3    77.6    -      -       -      +
     50B  ILE*     1.3    56.5    -      -       -      +
     52B  MET*     3.3     8.0    +      -       -      +
     53B  THR*     2.7    38.6    +      -       -      -
     68B  HIS*     4.6     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 50 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28A  MET*     4.1     7.9    -      -       -      -
     35A  HIS*     5.2     4.9    -      -       +      +
     46B  ALA*     3.2    18.6    +      -       +      +
     47B  LYS*     3.5    16.6    -      -       +      +
     49B  ALA*     1.3    77.2    -      -       -      +
     51B  TYR*     1.3    51.2    +      -       -      +
     53B  THR*     3.3     6.7    +      -       -      -
     54B  TYR*     2.8    32.5    +      -       +      +
     64B  THR*     3.6    15.2    -      -       +      +
     68B  HIS*     3.5    37.5    -      -       +      +
     70B  LEU*     4.4    22.0    -      -       +      -
     75B  VAL*     4.2    14.4    -      -       +      -
     78B  ILE*     4.2    17.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 51 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7A  LEU*     6.2     4.7    -      -       +      -
     47B  LYS      3.1    13.6    +      -       -      +
     48B  CYS*     3.8     6.1    -      -       -      +
     50B  ILE*     1.3    79.0    -      -       -      +
     52B  MET*     1.3    65.8    +      -       +      +
     54B  TYR*     3.4    10.3    -      +       -      +
     55B  LEU*     3.1    62.2    +      -       +      +
     78B  ILE*     4.6     3.3    -      -       +      +
     79B  VAL*     3.9    33.2    -      -       +      -
     82B  VAL*     3.5    49.7    -      -       +      -
     83B  ARG*     5.0     7.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 52 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3A  ASN*     5.5     5.2    -      -       +      +
      4A  ASP*     3.3    29.2    -      -       -      +
      7A  LEU*     4.5    15.3    -      -       +      -
     25A  PHE*     3.5    43.5    -      -       +      -
     29A  ARG*     3.5    34.8    +      -       -      +
     48B  CYS      2.9    17.2    +      -       -      +
     49B  ALA*     3.6     5.8    -      -       -      +
     51B  TYR*     1.3    76.6    -      -       +      +
     53B  THR*     1.3    65.2    +      -       -      +
     55B  LEU*     3.6     6.3    +      -       -      +
     56B  GLU*     3.1    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 53 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  ARG*     3.3    21.3    +      -       -      +
    192A  TYR*     6.1     0.4    -      -       +      +
     49B  ALA      2.7    16.5    +      -       -      -
     50B  ILE      3.5     4.7    -      -       -      -
     52B  MET*     1.3    74.1    -      -       -      +
     54B  TYR*     1.3    58.1    +      -       -      +
     56B  GLU*     4.4     1.1    -      -       -      -
     57B  GLN*     2.6    45.7    +      -       +      +
     64B  THR*     3.9    12.6    -      -       +      -
     67B  LEU*     3.8    24.5    -      -       +      -
     68B  HIS*     2.5    41.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 54 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50B  ILE      2.8    17.9    +      -       -      +
     51B  TYR*     3.3    13.4    +      +       -      +
     53B  THR*     1.3    77.1    -      -       -      +
     55B  LEU*     1.3    67.9    +      -       +      +
     57B  GLN      4.0     0.9    -      -       -      -
     58B  GLY      3.5     2.3    +      -       -      -
     59B  GLN*     2.8    79.1    +      -       +      +
     60B  ASN      4.2     0.8    +      -       -      -
     61B  LEU*     3.6    30.0    -      -       +      +
     64B  THR*     3.8    20.6    -      -       +      +
     75B  VAL*     4.2     8.7    -      -       +      -
     79B  VAL*     3.6    43.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 55 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51B  TYR*     3.1    49.8    +      -       +      +
     52B  MET*     4.0     6.3    -      -       -      +
     54B  TYR*     1.3    85.4    -      -       +      +
     56B  GLU*     1.3    66.9    +      -       -      +
     57B  GLN      3.3     0.2    -      -       -      -
     58B  GLY*     3.2    11.1    +      -       -      -
     59B  GLN*     3.4    28.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 56 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29A  ARG*     4.2    19.1    +      -       -      +
    192A  TYR*     3.8    16.7    +      -       -      +
     52B  MET      3.1    19.0    +      -       -      +
     53B  THR      3.8     2.2    -      -       -      +
     55B  LEU*     1.3    73.4    -      -       -      +
     57B  GLN*     1.3    85.4    +      -       -      +
     58B  GLY*     3.0     8.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 57 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192A  TYR*     3.9    12.3    -      -       -      -
     53B  THR*     2.6    24.3    +      -       +      +
     54B  TYR      4.0     0.7    -      -       -      +
     56B  GLU*     1.3    94.5    +      -       -      +
     58B  GLY*     1.3    61.2    +      -       -      +
     59B  GLN      3.6     1.1    -      -       -      -
     60B  ASN*     3.2    22.4    +      -       +      -
     63B  MET*     3.5    51.5    -      -       +      +
     64B  THR*     4.2    13.0    -      -       -      +
     67B  LEU*     3.6    24.7    -      -       +      +
----------------------------------------------------------
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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