Contacts of the helix formed by residues 33 - 61 (chain B) in PDB entry 2WY2


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 33 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28B  GLN*     2.9    38.1    +      -       -      +
     29B  ALA*     4.1     0.6    +      -       -      -
     31B  GLN*     3.8    18.6    -      -       -      +
     32B  GLY*     1.3    79.6    -      -       -      +
     34B  PHE*     1.3    64.3    +      -       -      +
     35B  ALA*     3.2     3.6    -      -       +      +
     36B  ALA*     4.2     8.6    -      -       +      +
     37B  ALA*     3.1    22.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 34 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29B  ALA*     4.9    12.6    -      -       +      -
     32B  GLY*     3.4    13.4    +      -       -      -
     33B  ASP*     1.3    70.3    -      -       -      +
     35B  ALA*     1.3    61.1    +      -       -      +
     37B  ALA*     3.6     4.9    -      -       -      +
     38B  LYS*     2.9    34.7    +      -       +      +
     95B  ILE*     4.7     7.9    -      -       +      -
     98B  HIS*     4.1     7.4    -      -       +      -
     99B  GLU*     3.4    55.0    -      -       +      +
    102B  LYS      3.8     5.2    -      -       -      -
    103B  ALA*     3.1    41.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 35 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33B  ASP*     3.2     1.7    -      -       +      +
     34B  PHE*     1.3    80.2    -      -       -      +
     36B  ALA*     1.3    63.2    +      -       -      +
     38B  LYS*     3.4     6.9    +      -       -      +
     39B  ALA*     3.1    22.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 36 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28B  GLN*     3.3    28.7    -      -       +      +
     33B  ASP*     3.5    11.8    +      -       +      +
     34B  PHE      3.4     0.4    -      -       -      -
     35B  ALA*     1.3    76.2    -      -       -      +
     37B  ALA*     1.3    66.6    +      -       -      +
     39B  ALA*     3.3     7.0    +      -       -      +
     40B  MET*     2.9    32.3    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     25B  ALA*     3.5    27.8    -      -       -      +
     28B  GLN*     3.8     2.8    -      -       -      +
     29B  ALA*     4.1     7.6    -      -       +      +
     33B  ASP      3.1    17.5    +      -       -      +
     34B  PHE*     3.6     8.7    -      -       -      +
     36B  ALA*     1.3    77.3    -      -       -      +
     38B  LYS*     1.3    63.6    +      -       -      +
     40B  MET*     3.1     4.0    +      -       -      +
     41B  MET*     2.9    28.2    +      -       -      +
     95B  ILE*     4.2    21.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 38 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34B  PHE*     2.9    19.7    +      -       +      +
     35B  ALA*     3.6     6.7    -      -       -      +
     37B  ALA*     1.3    76.7    -      -       -      +
     39B  ALA*     1.3    61.0    +      -       -      +
     41B  MET*     3.3    19.8    +      -       +      +
     42B  ASP*     3.1    24.0    +      -       -      +
     95B  ILE*     5.7     0.4    -      -       -      +
     99B  GLU*     5.7     3.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 39 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35B  ALA      3.1    14.2    +      -       -      +
     36B  ALA*     3.6    10.3    -      -       -      +
     38B  LYS*     1.3    77.3    -      -       -      +
     40B  MET*     1.3    64.4    +      -       +      +
     42B  ASP*     3.4     6.7    +      -       -      +
     43B  GLN*     3.2    33.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 40 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21B  LEU*     3.9    31.6    -      -       +      +
     24B  ALA*     3.6    31.2    -      -       +      +
     25B  ALA*     3.5    25.1    -      -       +      +
     28B  GLN*     4.7     8.7    -      -       +      -
     36B  ALA*     2.9    23.7    +      -       +      +
     37B  ALA      3.5     0.2    -      -       -      +
     39B  ALA*     1.3    76.6    -      -       +      +
     41B  MET*     1.3    59.3    +      -       -      +
     43B  GLN*     3.4    15.8    +      -       -      +
     44B  SER*     2.9    29.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 41 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22B  ALA*     6.0     0.9    -      -       -      +
     25B  ALA*     4.0     6.7    -      -       +      -
     37B  ALA      2.9    20.9    +      -       -      +
     38B  LYS*     3.3    21.7    +      -       +      +
     40B  MET*     1.3    75.0    -      -       -      +
     42B  ASP*     1.3    58.3    +      -       -      +
     44B  SER*     3.2     8.3    +      -       -      -
     45B  ARG*     2.8    30.2    +      -       -      +
     88B  ARG*     3.6    16.3    +      -       +      +
     91B  ILE*     5.6     0.7    -      -       +      -
     92B  THR*     3.3    43.3    -      -       +      +
     95B  ILE*     3.3    39.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 42 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38B  LYS      3.1    10.7    +      -       -      +
     39B  ALA*     3.5    11.4    -      -       -      +
     40B  MET      3.2     0.2    -      -       -      -
     41B  MET*     1.3    79.3    -      -       -      +
     43B  GLN*     1.3    63.7    +      -       +      +
     45B  ARG*     3.2    16.8    +      -       -      +
     46B  MET*     3.0    40.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 43 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21B  LEU*     5.0    14.4    -      -       +      +
     39B  ALA*     3.2    19.3    +      -       -      +
     40B  MET*     3.8    18.1    -      -       -      +
     41B  MET      3.3     0.2    -      -       -      -
     42B  ASP*     1.3    75.3    -      -       +      +
     44B  SER*     1.3    65.4    +      -       -      +
     46B  MET*     3.2    15.4    +      -       -      +
     47B  ALA*     2.9    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 44 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18B  ALA*     2.7    31.1    +      -       -      +
     21B  LEU*     3.3    16.3    -      -       -      +
     22B  ALA*     3.4     6.7    +      -       -      +
     40B  MET      2.9    17.0    +      -       -      -
     41B  MET*     3.2     8.3    +      -       -      -
     43B  GLN*     1.3    76.7    -      -       -      +
     45B  ARG*     1.3    63.1    +      -       -      +
     47B  ALA*     3.1     8.4    +      -       -      +
     48B  LEU*     2.9    29.2    +      -       -      +
     88B  ARG*     4.0    16.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 45 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41B  MET      2.8    13.0    +      -       -      +
     42B  ASP*     3.4    19.9    +      -       -      +
     44B  SER*     1.3    75.9    -      -       -      +
     46B  MET*     1.3    54.0    +      -       +      +
     48B  LEU*     3.2     6.1    +      -       +      +
     49B  ASN*     2.7    36.6    +      -       +      +
     88B  ARG*     3.9    23.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 46 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42B  ASP*     3.0    32.1    +      -       -      +
     43B  GLN*     3.2    14.3    +      -       -      +
     45B  ARG*     1.3    75.8    -      -       +      +
     47B  ALA*     1.3    62.9    +      -       -      +
     49B  ASN*     3.2     8.3    +      -       -      +
     50B  GLU*     3.0    24.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 47 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14B  ASN*     3.7    24.1    +      -       -      +
     17B  GLN*     6.3     0.7    -      -       +      -
     18B  ALA*     4.6    12.3    -      -       +      +
     21B  LEU*     5.1     6.7    -      -       +      -
     43B  GLN      2.9    12.3    +      -       -      +
     44B  SER*     3.4    12.1    -      -       -      +
     46B  MET*     1.3    77.7    -      -       -      +
     48B  LEU*     1.3    57.4    +      -       -      +
     50B  GLU*     3.4     5.1    +      -       -      +
     51B  ALA*     3.0    27.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 48 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15B  SER*     5.0     4.3    -      -       -      -
     18B  ALA*     3.3    26.5    -      -       +      -
     44B  SER      2.9    15.6    +      -       -      +
     45B  ARG*     3.5     7.4    -      -       +      +
     47B  ALA*     1.3    73.3    -      -       -      +
     49B  ASN*     1.3    56.2    +      -       -      +
     51B  ALA*     3.1     5.1    +      -       +      +
     52B  HIS*     2.6    38.9    +      -       +      +
     81B  LEU*     5.0     9.7    -      -       +      +
     84B  SER*     4.0    19.3    -      -       -      +
     85B  MET*     4.1    27.8    -      -       +      +
     88B  ARG*     3.3    44.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 49 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45B  ARG*     2.7    23.9    +      -       +      +
     46B  MET*     3.5     9.6    -      -       -      +
     48B  LEU*     1.3    74.0    -      -       -      +
     50B  GLU*     1.3    57.9    +      -       -      +
     52B  HIS*     3.3     7.2    +      -       -      +
     53B  LEU*     2.9    47.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 50 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14B  ASN*     4.2    13.2    +      -       -      +
     46B  MET      3.0    16.5    +      -       -      +
     47B  ALA*     3.8     6.0    -      -       -      +
     49B  ASN*     1.3    76.0    +      -       -      +
     51B  ALA*     1.3    63.8    +      -       -      +
     53B  LEU*     3.3    13.2    +      -       +      +
     54B  VAL*     3.1    30.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 51 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11B  LEU*     3.7    16.8    -      -       +      +
     14B  ASN*     3.9    20.6    -      -       +      +
     15B  SER      5.4     0.7    -      -       -      +
     47B  ALA      3.0    18.0    +      -       -      +
     48B  LEU*     3.5     7.4    -      -       +      +
     50B  GLU*     1.3    77.4    -      -       -      +
     52B  HIS*     1.3    62.3    +      -       -      +
     54B  VAL*     3.2     6.5    +      -       -      +
     55B  GLN*     3.0    22.0    +      -       -      +
     81B  LEU*     3.5    26.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 52 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48B  LEU      2.6    21.6    +      -       -      +
     49B  ASN*     3.6     7.4    -      -       -      +
     51B  ALA*     1.3    72.0    -      -       -      +
     53B  LEU*     1.3    56.1    +      -       -      +
     55B  GLN*     3.1    15.3    +      -       +      +
     56B  THR*     2.7    60.4    +      -       +      -
     81B  LEU*     4.7     7.5    -      -       +      +
     82B  MET*     6.4     1.6    -      -       -      -
     85B  MET*     4.8    22.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 53 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49B  ASN*     2.9    41.4    +      -       -      +
     50B  GLU*     3.5    10.8    -      -       +      +
     51B  ALA      3.2     0.2    -      -       -      -
     52B  HIS*     1.3    80.1    -      -       -      +
     54B  VAL*     1.3    63.7    +      -       +      +
     56B  THR*     3.2    19.7    +      -       -      +
     57B  LYS*     3.2    12.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 54 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7B  VAL*     4.1    12.8    -      -       +      -
     11B  LEU*     4.0    15.7    -      -       +      -
     50B  GLU*     3.1    22.9    +      -       +      +
     51B  ALA*     3.5     8.3    -      -       -      +
     53B  LEU*     1.3    76.5    -      -       +      +
     55B  GLN*     1.3    64.5    +      -       -      +
     57B  LYS*     3.2     9.0    +      -       -      +
     58B  LEU*     3.0    36.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 55 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11B  LEU*     4.9     3.1    -      -       +      +
     51B  ALA      3.0     6.8    +      -       -      +
     52B  HIS*     3.5    16.7    -      -       +      +
     54B  VAL*     1.3    78.2    -      -       -      +
     56B  THR*     1.3    64.7    +      -       -      +
     58B  LEU*     2.8    24.8    +      -       +      +
     59B  ILE*     2.8    19.0    +      -       +      +
     74B  LEU*     3.4    24.1    +      -       +      +
     77B  ALA*     3.9     3.8    -      -       -      +
     78B  GLN*     3.3    46.7    -      -       -      +
     81B  LEU*     2.8    41.8    -      -       +      +
     82B  MET*     5.6     0.5    -      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     52B  HIS*     2.7    51.1    +      -       +      -
     53B  LEU*     3.2    15.4    +      -       +      +
     55B  GLN*     1.3    73.0    -      -       -      +
     57B  LYS*     1.3    57.6    +      -       -      +
     59B  ILE*     3.0    16.5    +      -       +      +
     60B  GLU*     2.9    31.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 57 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53B  LEU      3.2     6.9    +      -       -      +
     54B  VAL*     3.2    11.8    +      -       -      +
     55B  GLN      3.2     0.2    -      -       -      -
     56B  THR*     1.3    79.7    -      -       -      +
     58B  LEU*     1.3    66.7    +      -       +      +
     60B  GLU*     3.9    13.1    -      -       -      +
     61B  GLY*     3.1    23.4    +      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
      4B  LEU*     3.6    31.4    -      -       +      +
      7B  VAL*     3.8    18.8    -      -       +      -
      8B  VAL*     5.6     4.7    -      -       +      -
     11B  LEU*     3.7    30.1    -      -       +      -
     54B  VAL*     3.0    17.9    +      -       +      +
     55B  GLN*     2.8    13.1    +      -       +      +
     57B  LYS*     1.3    81.3    -      -       +      +
     59B  ILE*     1.3    57.3    +      -       -      +
     61B  GLY      4.2     1.2    -      -       -      -
     62B  ASP*     3.5    22.9    +      -       -      +
     71B  SER*     6.0     1.2    -      -       -      -
     74B  LEU*     4.1    17.4    -      -       +      +
     77B  ALA*     5.6     3.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 59 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55B  GLN*     2.8    16.5    +      -       +      +
     56B  THR*     3.1    22.0    -      -       +      +
     58B  LEU*     1.3    76.8    -      -       -      +
     60B  GLU*     1.3    67.1    +      -       +      +
     61B  GLY      3.3     1.6    -      -       -      -
     62B  ASP*     3.0    32.0    -      -       -      +
     74B  LEU*     3.9    28.0    -      -       +      -
     78B  GLN*     5.2     6.3    -      -       -      +
     76C  HIS*     4.7    18.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 60 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56B  THR*     2.9    19.5    +      -       +      +
     57B  LYS*     3.9    12.8    -      -       +      +
     59B  ILE*     1.3    82.0    -      -       +      +
     61B  GLY*     1.3    56.9    +      -       -      +
     62B  ASP*     3.4     4.9    +      -       -      +
     63B  ALA*     5.1     1.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 61 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57B  LYS      3.1    14.0    +      -       -      -
     58B  LEU*     4.2     3.4    -      -       -      -
     60B  GLU*     1.3    76.7    -      -       -      +
     62B  ASP*     1.3    56.5    +      -       -      +
     63B  ALA*     2.9    23.0    +      -       -      +
----------------------------------------------------------
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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