Contacts of the helix formed by residues 1 - 31 (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 ALA 1 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  MET*     4.3    20.7    -      -       +      -
      2B  GLU*     1.3    68.6    -      -       +      +
      3B  GLU      3.5     1.1    -      -       -      +
      4B  LEU*     4.1    25.1    -      -       +      +
      5B  GLU*     2.4    62.7    +      -       -      +
     65B  GLU*     5.3     7.2    -      -       -      +
     73B  VAL*     5.2     8.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 2 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  MET*     6.1     0.2    -      -       -      +
      1B  ALA*     1.3    79.6    -      -       +      +
      3B  GLU*     1.3    68.3    +      -       +      +
      5B  GLU*     3.8     2.5    +      -       -      +
      6B  GLU*     3.0    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 3 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1B  ALA*     3.5     0.4    -      -       -      +
      2B  GLU*     1.3    82.9    -      -       +      +
      4B  LEU*     1.3    64.3    +      -       +      +
      6B  GLU*     2.8     9.3    +      -       -      +
      7B  VAL*     2.4    49.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 4 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1B  ALA*     3.4    25.7    +      -       +      +
      3B  GLU*     1.3    79.4    -      -       +      +
      5B  GLU*     1.3    56.9    +      -       -      +
      7B  VAL*     3.6     6.8    -      -       +      +
      8B  VAL*     2.8    36.1    +      -       -      +
     58B  LEU*     3.6    30.7    -      -       +      -
     65B  GLU*     5.1     7.4    -      -       -      +
     71B  SER*     4.3    18.4    -      -       -      +
     73B  VAL*     4.7    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 5 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  MET*     4.0    20.8    -      -       -      +
      1B  ALA      2.4    52.4    +      -       -      +
      2B  GLU      3.8     1.8    -      -       -      +
      4B  LEU*     1.3    67.3    -      -       -      +
      6B  GLU*     1.3    63.7    +      -       -      +
      8B  VAL*     3.3     8.5    +      -       +      +
      9B  MET*     3.1    32.9    +      -       +      +
     73B  VAL*     5.3     7.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 6 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2B  GLU      3.0    20.0    +      -       -      +
      3B  GLU*     2.8    10.9    +      -       -      +
      5B  GLU*     1.3    70.2    -      -       -      +
      7B  VAL*     1.3    66.2    +      -       +      +
      9B  MET*     3.3    19.5    +      -       +      +
     10B  GLY*     3.0    18.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 7 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3B  GLU*     2.4    53.9    +      -       +      +
      4B  LEU*     3.6     9.4    -      -       +      +
      6B  GLU*     1.3    66.1    -      -       +      +
      8B  VAL*     1.3    60.6    +      -       -      +
     10B  GLY*     3.1     3.6    +      -       -      -
     11B  LEU*     2.8    32.7    +      -       +      +
     54B  VAL*     4.1    13.2    -      -       +      -
     58B  LEU*     3.8    31.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 8 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4B  LEU*     2.8    27.3    +      -       -      +
      5B  GLU*     3.5     7.4    -      -       -      +
      7B  VAL*     1.3    77.4    -      -       +      +
      9B  MET*     1.3    53.2    +      -       +      +
     11B  LEU*     3.0    11.3    +      -       +      +
     12B  ILE*     2.7    53.4    +      -       +      +
     58B  LEU*     5.6     4.0    -      -       +      -
     73B  VAL*     3.4    36.8    -      -       +      +
     74B  LEU*     5.8     0.2    -      -       -      -
     76B  HIS*     4.3    22.2    -      -       +      -
     77B  ALA*     4.5    12.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 9 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5B  GLU*     3.1    26.1    +      -       +      +
      6B  GLU*     3.4    20.6    -      -       +      +
      7B  VAL      3.2     0.2    -      -       -      -
      8B  VAL*     1.3    75.7    -      -       +      +
     10B  GLY*     1.3    58.5    +      -       -      +
     12B  ILE*     3.3     7.5    +      -       -      +
     13B  ILE*     2.8    39.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 10 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6B  GLU      3.0    13.6    +      -       -      -
      7B  VAL*     3.1     4.4    +      -       -      -
      9B  MET*     1.3    76.3    -      -       -      +
     11B  LEU*     1.3    52.7    +      -       -      +
     13B  ILE*     3.3     6.4    +      -       -      +
     14B  ASN*     2.7    37.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 11 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7B  VAL*     2.8    27.0    +      -       +      +
      8B  VAL*     3.0    10.3    +      -       +      +
     10B  GLY*     1.3    73.3    -      -       -      +
     12B  ILE*     1.3    52.6    +      -       -      +
     14B  ASN*     3.5     6.2    -      -       +      +
     15B  SER*     2.7    37.6    +      -       -      -
     51B  ALA*     3.7    38.6    -      -       +      +
     54B  VAL*     4.0    13.7    -      -       +      -
     55B  GLN*     5.0     2.5    -      -       -      +
     58B  LEU*     3.7    30.1    -      -       +      -
     77B  ALA*     3.8    27.8    -      -       +      -
     81B  LEU*     4.4    13.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 12 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8B  VAL*     2.7    35.1    +      -       +      +
      9B  MET*     3.6     7.0    -      -       -      +
     11B  LEU*     1.3    71.8    -      -       -      +
     13B  ILE*     1.3    62.6    +      -       +      +
     15B  SER*     2.6    19.7    +      -       -      -
     16B  GLY*     2.8    12.5    +      -       -      -
     76B  HIS*     3.3    33.7    -      -       +      +
     77B  ALA*     4.3     3.8    -      -       -      -
     80B  HIS*     3.1    50.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 13 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9B  MET*     2.8    26.4    +      -       +      +
     10B  GLY*     3.6     6.7    -      -       -      +
     12B  ILE*     1.3    81.1    -      -       +      +
     14B  ASN*     1.3    53.1    +      -       -      +
     16B  GLY*     3.1     2.0    +      -       -      -
     17B  GLN*     2.7    44.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 14 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10B  GLY      2.7    21.9    +      -       -      +
     11B  LEU*     3.5    10.3    -      -       +      +
     13B  ILE*     1.3    74.4    -      -       -      +
     15B  SER*     1.3    58.6    +      -       -      +
     17B  GLN*     3.2    11.0    +      -       -      +
     18B  ALA*     2.8    28.7    +      -       -      +
     47B  ALA*     3.7    35.7    +      -       -      +
     48B  LEU*     5.9     0.2    -      -       -      -
     50B  GLU*     4.2    15.8    +      -       -      +
     51B  ALA*     3.9    16.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 15 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11B  LEU      2.7    17.3    +      -       -      -
     12B  ILE      2.6    21.8    +      -       -      -
     14B  ASN*     1.3    72.6    -      -       -      +
     16B  GLY*     1.3    64.8    +      -       -      +
     18B  ALA*     3.2     7.4    +      -       -      +
     19B  ARG*     3.0    15.2    +      -       -      +
     48B  LEU*     5.0     1.8    -      -       -      -
     51B  ALA*     5.8     0.2    -      -       -      -
     80B  HIS*     3.5    34.9    +      -       -      +
     81B  LEU*     4.1    13.4    -      -       -      +
     84B  SER*     2.9    31.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 16 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12B  ILE      2.8     9.6    +      -       -      -
     13B  ILE*     3.5     3.4    -      -       -      -
     15B  SER*     1.3    84.9    +      -       -      +
     17B  GLN*     1.3    55.6    +      -       -      +
     19B  ARG*     3.3    13.4    +      -       -      +
     20B  SER*     2.9    28.3    +      -       -      -
     80B  HIS*     5.8     1.6    -      -       -      -
     84B  SER*     4.8     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 17 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13B  ILE*     2.7    30.6    +      -       +      +
     14B  ASN*     3.6    12.4    -      -       -      +
     16B  GLY*     1.3    71.9    -      -       -      +
     18B  ALA*     1.3    54.3    +      -       -      +
     20B  SER*     3.1     9.4    +      -       -      +
     21B  LEU*     2.8    56.7    +      -       +      +
     47B  ALA*     6.3     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 18 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14B  ASN      2.8    13.8    +      -       -      +
     15B  SER      3.3     9.6    -      -       -      +
     17B  GLN*     1.3    76.0    -      -       -      +
     19B  ARG*     1.3    57.1    +      -       -      +
     21B  LEU*     3.2     5.8    +      -       -      -
     22B  ALA*     2.8    16.6    +      -       -      +
     44B  SER*     2.7    29.6    +      -       -      +
     47B  ALA*     4.6     8.4    -      -       +      +
     48B  LEU*     3.3    39.7    -      -       +      -
     84B  SER*     4.7     1.6    -      -       -      -
     88B  ARG*     5.9     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 19 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82A  MET*     5.3     9.0    -      -       -      +
     85A  MET*     3.9    27.5    -      -       -      +
     86A  LEU*     4.3    28.2    -      -       -      +
     89A  GLU*     4.4    17.9    +      -       -      +
     15B  SER      3.0    12.5    +      -       -      +
     16B  GLY*     3.6    12.5    +      -       -      +
     18B  ALA*     1.3    75.6    -      -       -      +
     20B  SER*     1.3    59.7    +      -       -      +
     22B  ALA*     2.9    10.1    +      -       +      +
     23B  TYR*     2.8    32.7    +      -       +      +
     84B  SER*     4.2    17.0    +      -       -      +
     87B  ALA*     4.8    11.4    -      -       +      -
     88B  ARG*     6.0     0.2    -      -       -      -
     91B  ILE*     5.3     4.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 20 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16B  GLY      2.9    14.1    +      -       -      -
     17B  GLN*     3.3    14.7    -      -       -      +
     19B  ARG*     1.3    77.8    -      -       -      +
     21B  LEU*     1.3    60.4    +      -       -      +
     23B  TYR*     3.4     7.1    +      -       -      +
     24B  ALA*     2.9    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 21 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17B  GLN*     2.8    41.8    +      -       +      +
     18B  ALA*     4.5     2.2    -      -       -      -
     20B  SER*     1.3    73.9    -      -       -      +
     22B  ALA*     1.3    53.7    +      -       -      +
     24B  ALA*     3.1     6.3    +      -       +      +
     25B  ALA*     2.6    36.2    +      -       -      +
     40B  MET*     3.9    31.8    -      -       +      +
     43B  GLN*     5.0    14.4    -      -       +      +
     44B  SER*     3.3    30.1    -      -       -      +
     47B  ALA*     5.1     6.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 22 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18B  ALA      2.8    13.8    +      -       -      +
     19B  ARG*     2.9    12.3    +      -       -      +
     21B  LEU*     1.3    75.2    -      -       -      +
     23B  TYR*     1.3    63.7    +      -       -      +
     25B  ALA*     2.9    11.2    +      -       -      +
     26B  LEU      2.9    18.7    +      -       -      -
     41B  MET*     6.0     0.9    -      -       -      +
     44B  SER*     3.4     5.3    +      -       -      +
     88B  ARG*     3.9    26.7    -      -       +      +
     91B  ILE*     3.6    30.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 23 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  GLU*     3.7    23.8    -      -       +      +
     93A  GLU*     3.3    26.1    +      -       -      -
     19B  ARG*     2.8    21.4    +      -       +      +
     20B  SER*     3.8     7.0    -      -       -      +
     22B  ALA*     1.3    72.9    -      -       -      +
     24B  ALA*     1.3    61.2    +      -       +      +
     26B  LEU*     3.1    14.3    +      -       +      +
     27B  LYS*     2.8    44.1    +      -       +      +
     30B  LYS*     5.0     7.2    +      -       -      -
     91B  ILE*     4.2     9.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 24 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20B  SER*     2.9    19.2    +      -       -      +
     21B  LEU*     3.3     7.6    -      -       +      +
     23B  TYR*     1.3    80.4    -      -       +      +
     25B  ALA*     1.3    64.5    +      -       -      +
     27B  LYS*     3.1    12.0    +      -       -      +
     28B  GLN*     2.9    28.5    +      -       +      +
     40B  MET*     3.6    18.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 25 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21B  LEU      2.6    17.1    +      -       -      +
     22B  ALA*     3.1    14.1    -      -       -      +
     24B  ALA*     1.3    73.3    -      -       -      +
     26B  LEU*     1.3    62.6    +      -       -      +
     28B  GLN*     3.2     8.4    +      -       -      +
     29B  ALA*     3.1    15.9    +      -       -      +
     37B  ALA*     3.5    18.0    -      -       -      +
     40B  MET*     3.5    28.4    -      -       +      +
     41B  MET*     4.0    17.0    -      -       +      +
     91B  ILE*     5.3     0.2    -      -       +      -
     95B  ILE*     4.0     4.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 26 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93A  GLU*     3.2    46.0    -      -       +      +
     22B  ALA      2.9    11.4    +      -       -      +
     23B  TYR*     3.3    16.2    -      -       +      +
     25B  ALA*     1.3    77.6    -      -       -      +
     27B  LYS*     1.3    63.1    +      -       -      +
     29B  ALA*     2.9    15.5    +      -       +      +
     30B  LYS*     3.0    19.2    +      -       -      +
     91B  ILE*     3.9    17.5    -      -       +      -
     94B  LEU*     4.5    11.2    -      -       +      -
     95B  ILE*     3.9    21.5    -      -       +      +
     98B  HIS*     3.5    33.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 27 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23B  TYR*     2.8    31.5    +      -       +      +
     24B  ALA*     3.3    14.4    -      -       +      +
     26B  LEU*     1.3    77.3    -      -       -      +
     28B  GLN*     1.3    68.4    +      -       +      +
     30B  LYS*     3.1    23.4    +      -       +      +
     31B  GLN*     3.1    42.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 28 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24B  ALA*     2.9    21.0    +      -       -      +
     25B  ALA*     3.2    11.6    +      -       -      +
     27B  LYS*     1.3    81.8    -      -       -      +
     29B  ALA*     1.3    64.1    +      -       -      +
     31B  GLN*     3.0    21.9    +      -       -      +
     33B  ASP*     2.9    39.4    +      -       -      +
     36B  ALA*     3.3    25.9    -      -       +      +
     37B  ALA      3.8    17.7    -      -       -      +
     40B  MET*     4.7     8.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 29 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25B  ALA      3.1     7.6    +      -       -      +
     26B  LEU*     2.9    13.8    +      -       +      +
     28B  GLN*     1.3    80.3    -      -       -      +
     30B  LYS*     1.3    53.9    +      -       -      +
     32B  GLY*     2.7    25.4    +      -       -      +
     33B  ASP      4.4     4.9    -      -       -      +
     34B  PHE*     4.9     7.9    -      -       +      -
     37B  ALA*     4.1     6.4    -      -       +      +
     95B  ILE*     4.0    29.4    -      -       +      -
     98B  HIS*     4.3    21.1    -      -       +      +
    103B  ALA      4.2     8.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 30 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93A  GLU*     2.9    35.6    +      -       -      -
     96A  GLU*     3.5    29.5    +      -       -      +
    100A  LYS*     3.6    27.9    +      -       -      +
     23B  TYR*     5.0     7.7    +      -       -      -
     26B  LEU*     3.0    27.1    +      -       -      +
     27B  LYS*     3.1    17.2    +      -       +      +
     29B  ALA*     1.3    75.7    -      -       -      +
     31B  GLN*     1.3    61.4    +      -       +      +
     32B  GLY*     3.2     1.0    +      -       -      -
     98B  HIS*     4.3    16.6    -      -       -      +
    103B  ALA*     6.1     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 31 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27B  LYS*     3.1    41.3    -      -       +      +
     28B  GLN*     3.0    18.3    +      -       -      +
     30B  LYS*     1.3    77.3    -      -       +      +
     32B  GLY*     1.3    60.2    +      -       -      +
     33B  ASP*     3.3    19.7    +      -       -      +
----------------------------------------------------------
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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