Contacts of the helix formed by residues 29 - 55 (chain E) in PDB entry 3EXG


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 29 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1E  PHE*     2.7    33.2    -      -       -      +
      2E  ALA      3.7    19.3    +      -       -      +
      3E  ASN*     2.8    14.8    +      -       -      +
     27E  LEU*     5.0     2.0    -      -       -      -
     28E  THR*     1.3    70.2    -      -       -      +
     30E  GLU*     1.3    70.6    +      -       -      +
     32E  GLY*     4.0     0.4    -      -       -      +
     33E  LEU*     3.3    35.2    +      -       +      +
    295E  MET*     5.3     0.8    -      -       -      +
    300E  LEU*     2.4    80.2    +      -       +      +
    301E  ALA*     3.5     4.8    -      -       -      +
    305E  GLU*     2.9    36.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 30 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3E  ASN      4.5     0.8    +      -       -      -
     28E  THR*     3.1    11.2    +      -       -      +
     29E  ARG*     1.3    88.6    -      -       -      +
     31E  ASP*     1.3    76.7    +      -       -      +
     33E  LEU*     3.5    16.3    -      -       -      +
     34E  LYS*     3.7     5.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 31 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27E  LEU*     4.4     4.0    -      -       +      -
     28E  THR*     3.2    36.3    +      -       +      +
     30E  GLU*     1.3    82.8    +      -       -      +
     32E  GLY*     1.3    57.4    +      -       -      +
     33E  LEU      3.1     2.0    -      -       -      -
     34E  LYS*     2.7    54.6    +      -       -      +
     35E  TYR*     3.2    30.2    +      -       +      -
    234E  ARG*     4.0     6.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 32 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27E  LEU*     3.6    32.1    -      -       -      +
     28E  THR      2.8    14.5    +      -       -      -
     29E  ARG      4.0     1.3    -      -       -      -
     31E  ASP*     1.3    72.5    -      -       -      +
     33E  LEU*     1.3    57.4    +      -       -      +
     35E  TYR*     3.4     8.8    +      -       -      +
     36E  TYR*     3.1    20.1    +      -       -      +
    291E  LEU*     3.8     3.6    -      -       -      +
    295E  MET*     3.1    20.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 33 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29E  ARG*     3.3    33.2    +      -       -      +
     30E  GLU*     3.5    13.2    -      -       -      +
     32E  GLY*     1.3    77.3    -      -       -      +
     34E  LYS*     1.3    61.8    +      -       -      +
     35E  TYR      3.3     0.2    -      -       -      -
     36E  TYR*     4.0     3.2    -      -       -      +
     37E  ARG*     3.3    21.8    +      -       -      +
    295E  MET*     3.6    20.2    -      -       +      -
    300E  LEU      4.9     0.2    -      -       -      +
    301E  ALA*     3.8    20.6    -      -       +      -
    305E  GLU*     4.2     9.6    -      -       -      +
    306E  LEU*     4.3     5.8    -      -       +      -
    309E  ILE*     4.2    19.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 34 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30E  GLU      3.7     4.4    +      -       -      +
     31E  ASP*     2.7    34.3    +      -       -      +
     33E  LEU*     1.3    73.7    -      -       -      +
     35E  TYR*     1.3    86.9    +      -       -      +
     37E  ARG*     3.5     6.2    +      -       -      +
     38E  MET*     3.0    47.2    +      -       +      +
     77E  ALA*     5.5     5.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 35 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27E  LEU*     4.0    19.5    -      -       +      -
     31E  ASP*     3.2    24.0    +      -       -      -
     32E  GLY*     3.7     6.3    -      -       -      +
     34E  LYS*     1.3   111.7    +      -       -      +
     36E  TYR*     1.3    66.6    +      -       -      +
     38E  MET*     3.0     8.7    +      -       +      +
     39E  MET*     2.9    29.0    +      -       -      +
     73E  VAL*     4.2    10.9    -      -       +      +
     77E  ALA*     3.4    22.6    +      -       +      +
    230E  ILE*     4.2    26.5    -      -       +      -
    231E  LEU*     4.7     3.6    -      -       +      -
    234E  ARG*     2.9    45.7    +      -       -      -
    238E  ARG*     4.8     1.7    +      -       -      -
    291E  LEU*     4.2    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 36 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32E  GLY      3.1    14.7    +      -       -      +
     33E  LEU      4.1     3.6    -      -       -      +
     35E  TYR*     1.3    81.3    -      -       -      +
     37E  ARG*     1.3    65.4    +      -       -      +
     38E  MET      3.0     0.7    +      -       -      -
     39E  MET*     3.2     3.9    +      -       -      +
     40E  GLN*     3.1    35.4    +      -       +      +
    288E  ILE*     3.5    35.0    -      -       +      +
    291E  LEU*     3.5    21.9    -      -       +      +
    292E  LYS*     4.5    11.9    -      -       +      +
    295E  MET*     3.9     7.9    -      -       +      -
    306E  LEU*     3.7    54.8    +      -       +      +
    309E  ILE*     4.3    14.6    -      -       +      -
    310E  ASP*     3.2    27.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 37 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33E  LEU      3.3    16.8    +      -       -      +
     34E  LYS*     3.5     6.3    +      -       -      +
     36E  TYR*     1.3    79.3    -      -       -      +
     38E  MET*     1.3    57.7    +      -       +      +
     40E  GLN*     4.1     2.4    -      -       -      +
     41E  THR*     2.6    42.1    +      -       -      +
    309E  ILE*     3.5    45.2    -      -       +      +
    312E  GLU*     2.7    45.8    +      -       -      +
    313E  VAL*     4.1    11.5    -      -       +      +
    316E  GLU*     5.5     5.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 38 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34E  LYS*     3.0    61.0    +      -       +      +
     35E  TYR*     3.5    13.5    -      -       +      +
     36E  TYR      3.0     0.6    -      -       -      -
     37E  ARG*     1.3    77.1    -      -       +      +
     39E  MET*     1.3    67.8    +      -       -      +
     41E  THR*     3.8     4.2    -      -       -      -
     42E  VAL*     3.1    25.1    +      -       -      +
     73E  VAL*     3.9    24.9    -      -       +      -
     76E  GLU*     5.1    11.9    -      -       +      -
     96E  PHE*     4.1    19.1    -      -       +      -
     97E  THR*     4.8    19.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 39 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35E  TYR      2.9    14.5    +      -       -      +
     36E  TYR*     3.9     4.3    -      -       +      +
     38E  MET*     1.3    75.9    -      -       -      +
     40E  GLN*     1.3    49.5    +      -       -      +
     42E  VAL*     3.0     6.1    +      -       -      +
     43E  ARG*     2.7    34.1    +      -       -      +
     69E  GLU*     3.9    30.6    -      -       +      +
     70E  ALA*     4.2     9.2    -      -       -      -
     73E  VAL*     3.7    16.4    -      -       +      -
    230E  ILE*     4.1    21.3    -      -       +      -
    287E  PRO*     4.2    11.2    -      -       -      +
    288E  ILE*     3.6    27.5    -      -       +      +
    291E  LEU*     3.4    43.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 40 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36E  TYR*     3.1    32.2    +      -       +      +
     37E  ARG*     4.1     4.3    -      -       -      +
     39E  MET*     1.3    75.1    -      -       -      +
     41E  THR*     1.3    53.6    +      -       -      +
     43E  ARG*     3.6    10.8    -      -       -      +
     44E  ARG*     2.8    62.2    +      -       -      +
    288E  ILE*     3.3    34.9    -      -       +      +
    309E  ILE*     5.7     0.4    -      -       +      -
    310E  ASP*     3.0    34.6    -      -       -      +
    313E  VAL*     3.8    14.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 41 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37E  ARG*     2.6    27.1    +      -       -      +
     38E  MET      3.8     3.6    -      -       -      -
     40E  GLN*     1.3    74.4    -      -       -      +
     42E  VAL*     1.3    67.5    +      -       -      +
     44E  ARG*     3.4     0.7    +      -       -      +
     45E  MET*     2.9    27.9    +      -       +      +
     96E  PHE*     3.5    31.6    -      -       +      -
    102E  VAL*     3.7    22.9    -      -       +      -
    313E  VAL*     3.7    21.0    -      -       +      +
    316E  GLU*     5.7     5.4    -      -       +      -
    317E  ILE*     4.2     6.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 42 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38E  MET      3.1    12.9    +      -       -      +
     39E  MET      3.0     8.2    +      -       -      +
     41E  THR*     1.3    79.5    -      -       -      +
     43E  ARG*     1.3    65.6    +      -       -      +
     45E  MET*     3.7     9.3    -      -       -      +
     46E  GLU*     2.9    25.9    +      -       +      +
     65E  CYS*     3.9    24.9    -      -       -      -
     69E  GLU*     3.4    25.6    -      -       +      -
     72E  CYS*     4.7     4.3    -      -       -      -
     73E  VAL*     4.9     2.0    -      -       +      -
     93E  GLY*     4.1    19.7    -      -       -      +
     96E  PHE*     3.8    22.7    -      -       +      -
     97E  THR*     4.4     8.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 43 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39E  MET      2.7    20.0    +      -       -      +
     40E  GLN*     3.6    13.3    -      -       -      +
     41E  THR      3.2     0.2    -      -       -      -
     42E  VAL*     1.3    76.1    -      -       -      +
     44E  ARG*     1.3    67.8    +      -       -      +
     46E  GLU*     3.3     3.4    +      -       -      +
     47E  LEU*     3.2    35.4    +      -       +      +
     66E  ASP*     3.8    13.7    -      -       -      +
     67E  GLY*     3.5    10.3    -      -       -      +
     69E  GLU*     2.5    44.3    +      -       -      +
    260E  TYR*     3.6    13.9    -      -       -      -
    282E  ARG*     4.5     8.6    -      -       -      +
    286E  ASP*     2.7    37.2    +      -       -      -
    287E  PRO*     4.0     2.2    -      -       -      +
    288E  ILE*     3.6    19.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 44 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40E  GLN*     2.8    43.1    +      -       -      +
     41E  THR      4.1     0.2    -      -       -      +
     43E  ARG*     1.3    77.9    -      -       -      +
     45E  MET*     1.3    59.0    +      -       -      +
     47E  LEU*     3.1    36.8    +      -       -      +
     48E  LYS*     2.9    28.8    +      -       -      +
    310E  ASP      5.4     0.7    -      -       -      +
    313E  VAL*     3.6    17.3    -      -       +      -
    314E  ARG*     3.2    54.6    -      -       +      +
    317E  ILE*     3.6    22.3    -      -       +      +
    286L  ASN      5.4     0.2    +      -       -      -
    289L  ASP*     4.8     7.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 45 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41E  THR      2.9    18.6    +      -       -      +
     42E  VAL*     3.7     8.1    -      -       -      +
     44E  ARG*     1.3    77.7    -      -       -      +
     46E  GLU*     1.3    66.8    +      -       -      +
     48E  LYS*     3.3     4.6    +      -       -      +
     49E  ALA*     2.9    22.2    +      -       +      +
     92E  HIS*     4.6    16.4    -      -       -      +
     93E  GLY*     6.0     0.2    -      -       -      -
     96E  PHE*     4.5     9.0    -      -       +      -
    102E  VAL*     3.5    44.2    -      -       +      +
    105E  ILE*     3.3    49.4    -      -       +      -
    106E  LEU*     4.1    13.5    -      -       +      +
    317E  ILE*     3.8    16.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 46 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42E  VAL*     2.9    23.2    +      -       +      +
     43E  ARG      3.3     5.6    +      -       -      +
     45E  MET*     1.3    77.8    -      -       -      +
     47E  LEU*     1.3    60.6    +      -       -      +
     49E  ALA*     3.1     5.5    +      -       -      +
     50E  ASP*     2.8    28.2    +      -       -      +
     63E  HIS      4.0     0.9    -      -       -      +
     64E  LEU*     3.2    22.9    -      -       +      +
     65E  CYS*     2.7    52.9    +      -       -      +
     66E  ASP*     4.0    20.6    -      -       +      +
     92E  HIS*     3.2    34.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 47 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43E  ARG*     3.2    25.9    +      -       +      +
     44E  ARG*     3.1    45.7    +      -       -      +
     46E  GLU*     1.3    77.5    -      -       -      +
     48E  LYS*     1.3    64.0    +      -       -      +
     50E  ASP*     3.1     9.5    +      -       -      +
     51E  GLN*     2.9    23.8    +      -       -      +
     66E  ASP*     3.8    22.2    -      -       -      +
    261E  HIS*     4.5    11.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 48 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44E  ARG      2.9    10.3    +      -       -      +
     45E  MET*     3.8     3.8    -      -       -      +
     47E  LEU*     1.3    75.4    -      -       -      +
     49E  ALA*     1.3    59.8    +      -       -      +
     51E  GLN*     2.8    34.2    +      -       -      +
     52E  LEU*     2.8    46.8    +      -       +      +
    106E  LEU*     3.8     8.5    -      -       +      -
    317E  ILE*     3.6    22.0    -      -       +      -
    318E  GLU*     3.0    42.0    +      -       -      -
    321E  ALA*     3.7    24.9    -      -       +      -
    286L  ASN*     3.5     8.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 49 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45E  MET*     2.9    14.1    +      -       +      +
     46E  GLU*     3.4    13.0    -      -       -      +
     48E  LYS*     1.3    77.1    -      -       -      +
     50E  ASP*     1.3    57.1    +      -       -      +
     52E  LEU*     2.9     7.2    +      -       -      +
     53E  TYR*     2.8    32.2    +      -       -      +
     58E  ILE*     3.7    10.4    -      -       +      +
     62E  CYS*     4.6     2.2    -      -       -      -
     64E  LEU*     4.1    14.1    -      -       +      -
     92E  HIS*     5.1     0.4    -      -       -      +
    106E  LEU*     4.4     5.8    -      -       +      +
    109E  LEU*     4.1    25.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 50 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46E  GLU      2.8    15.2    +      -       -      +
     47E  LEU*     3.5    12.0    -      -       -      +
     49E  ALA*     1.3    69.3    -      -       -      +
     51E  GLN*     1.3    65.7    +      -       -      +
     53E  TYR*     3.9    11.4    -      -       -      +
     54E  LYS*     3.0    45.1    +      -       -      +
     62E  CYS*     5.4     0.4    -      -       -      -
     64E  LEU*     3.5    33.1    -      -       +      +
    261E  HIS*     3.5    19.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 51 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47E  LEU      2.9    12.6    +      -       -      +
     48E  LYS*     2.8    40.9    +      -       -      +
     50E  ASP*     1.3    79.5    -      -       -      +
     52E  LEU*     1.3    63.9    +      -       -      +
     54E  LYS*     3.1    19.6    +      -       +      +
     55E  GLN*     3.3    46.3    +      -       -      +
    289J  ASP      5.8     1.1    -      -       -      +
    286L  ASN*     2.9    24.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 52 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48E  LYS*     2.8    43.3    +      -       +      +
     49E  ALA*     2.9     9.6    +      -       -      +
     51E  GLN*     1.3    77.0    -      -       -      +
     53E  TYR*     1.3    63.2    +      -       -      +
     55E  GLN*     3.3    22.7    +      -       -      +
     57E  ILE*     3.3    39.2    +      -       +      +
     58E  ILE*     3.8    20.2    -      -       +      -
    106E  LEU*     4.5    11.0    -      -       +      -
    110E  THR*     5.1     7.4    -      -       +      -
    321E  ALA*     4.3    11.2    -      -       +      -
    324E  ALA*     5.8     0.9    -      -       +      -
    325E  THR*     3.7    28.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 53 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49E  ALA      2.8    16.0    +      -       -      +
     50E  ASP*     3.9    12.1    -      -       -      +
     52E  LEU*     1.3    76.6    -      -       -      +
     54E  LYS*     1.3    67.5    +      -       +      +
     55E  GLN      3.2     0.2    -      -       -      -
     56E  LYS*     3.2    17.0    +      -       -      +
     58E  ILE*     3.2    36.5    -      -       +      +
     59E  ARG*     4.5     0.9    -      -       -      -
     60E  GLY      3.1    25.8    +      -       -      -
     61E  PHE*     4.3     1.4    -      -       -      -
     62E  CYS*     3.3    42.5    +      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 54 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50E  ASP*     3.0    49.2    +      -       -      +
     51E  GLN*     3.1    12.8    +      -       +      +
     53E  TYR*     1.3    80.4    -      -       +      +
     55E  GLN*     1.3    62.5    +      -       +      +
     56E  LYS*     3.2    10.5    +      -       -      +
    258J  HIS*     5.7     1.6    +      -       -      -
    289J  ASP*     3.3    44.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 55 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51E  GLN*     3.3    46.9    +      -       +      +
     52E  LEU*     3.3    24.6    +      -       -      +
     53E  TYR      3.2     0.6    -      -       -      -
     54E  LYS*     1.3    75.4    -      -       +      +
     56E  LYS*     1.3    71.5    +      -       -      +
     57E  ILE*     3.3    22.3    -      -       +      +
    258J  HIS*     5.4     7.6    +      -       -      +
    289J  ASP*     3.1    28.5    -      -       -      +
    290J  ALA*     4.0    14.7    -      -       +      +
    291J  PRO*     4.9     3.6    -      -       -      +
    327J  LEU      4.3    13.2    -      -       -      +
    328J  ASN*     5.0    10.5    -      -       +      +
----------------------------------------------------------
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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