Contacts of the helix formed by residues 43 - 69 (chain B) in PDB entry 4QI1


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 43 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41B  VAL*     4.2     1.2    -      -       -      +
     42B  GLN*     1.3    76.7    -      -       -      +
     44B  PRO*     1.4    69.7    -      -       -      +
     45B  ARG*     3.0    14.4    +      -       -      +
     46B  GLN*     2.9    45.1    +      -       +      +
     47B  LYS*     2.8    30.0    +      -       -      +
    237B  ILE      5.1     0.9    -      -       -      +
    238B  MET      6.3     2.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 44 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42B  GLN      3.3     7.6    -      -       -      +
     43B  ASP*     1.4    91.4    -      -       -      +
     45B  ARG*     1.3    57.1    +      -       -      +
     47B  LYS*     3.4    11.9    +      -       +      +
     48B  GLU      3.0    22.0    +      -       -      -
    114C  ARG*     3.5    41.5    -      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     43B  ASP*     3.0    10.1    +      -       -      +
     44B  PRO*     1.3    76.2    -      -       -      +
     46B  GLN*     1.3    66.7    +      -       -      +
     48B  GLU*     3.2    19.2    +      -       -      +
     49B  PHE*     3.2    44.9    +      -       +      -
    107B  LEU*     3.4    24.2    +      -       +      +
    108B  LEU*     3.9    17.8    +      -       -      +
    110B  GLY*     6.0     0.4    -      -       -      -
    175B  THR*     5.6     1.6    +      -       -      +
    236B  ALA      3.7    20.2    +      -       -      -
    237B  ILE*     4.3     6.7    +      -       -      +
    114C  ARG*     4.4    12.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 46 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41B  VAL*     3.8    31.3    -      -       +      +
     42B  GLN      5.2     0.3    +      -       -      -
     43B  ASP*     2.9    28.5    +      -       +      +
     45B  ARG*     1.3    74.9    -      -       -      +
     47B  LYS*     1.3    63.4    +      -       -      +
     49B  PHE*     3.1    18.3    +      -       -      +
     50B  TYR*     3.3    33.4    +      -       +      -
    232B  LEU      5.7     0.4    +      -       -      -
    237B  ILE*     3.3    33.3    +      -       +      +
    238B  MET*     3.7    31.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 47 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41B  VAL*     2.9    40.3    -      -       +      +
     42B  GLN*     2.7    27.3    +      -       -      +
     43B  ASP      2.8    15.2    +      -       -      +
     44B  PRO*     3.5    12.5    -      -       +      +
     46B  GLN*     1.3    72.2    -      -       -      +
     48B  GLU*     1.3    67.0    +      -       -      +
     50B  TYR*     3.2     7.9    +      -       -      +
     51B  VAL*     3.0    28.7    +      -       +      +
    306B  MPG      5.2     8.6    +      -       -      +
    114C  ARG*     5.9     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 48 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44B  PRO      3.0    14.4    +      -       -      +
     45B  ARG*     3.2    14.1    +      -       -      +
     47B  LYS*     1.3    75.7    -      -       -      +
     49B  PHE*     1.3    62.1    +      -       -      +
     51B  VAL*     3.2     3.6    +      -       -      +
     52B  ILE*     3.0    34.3    +      -       +      +
    103B  LEU*     5.0     2.3    -      -       -      +
    107B  LEU*     3.3    34.1    -      -       +      +
    302B  MPG      2.8    43.9    +      -       -      +
    114C  ARG*     3.6    28.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 49 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45B  ARG*     3.2    56.0    +      -       +      -
     46B  GLN*     3.1     8.5    +      -       -      +
     48B  GLU*     1.3    79.3    -      -       +      +
     50B  TYR*     1.3    57.1    +      -       -      +
     52B  ILE*     4.8     0.4    -      -       -      -
     53B  THR*     2.6    36.8    +      -       -      -
    104B  ASP*     3.4    40.5    -      -       -      +
    107B  LEU*     3.8    20.0    -      -       +      -
    108B  LEU*     3.6    25.6    -      -       +      -
    231B  LEU*     4.0    12.3    -      -       +      -
    232B  LEU*     3.9    14.6    -      -       +      -
    237B  ILE*     3.8    29.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 50 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34B  PHE      3.5    19.1    -      -       -      -
     37B  ASP*     2.6    29.5    +      -       +      -
     38B  GLY*     3.4    29.6    -      -       -      -
     41B  VAL*     3.8    23.0    -      -       +      +
     46B  GLN*     3.3    31.0    +      -       +      -
     47B  LYS*     3.2     9.3    +      -       -      +
     49B  PHE*     1.3    75.3    -      -       -      +
     51B  VAL*     1.3    65.4    +      -       -      +
     53B  THR*     3.7     0.8    -      -       -      -
     54B  ILE*     2.8    37.0    +      -       +      +
    232B  LEU*     3.7    42.5    +      -       +      -
    237B  ILE*     4.2     4.3    -      -       +      -
    306B  MPG      3.8    15.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 51 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47B  LYS*     3.0    22.8    +      -       +      +
     48B  GLU*     3.2     6.2    +      -       -      +
     50B  TYR*     1.3    75.4    -      -       -      +
     52B  ILE*     1.3    66.5    +      -       -      +
     54B  ILE*     3.9     5.4    -      -       -      +
     55B  LEU*     3.0    28.6    +      -       +      +
    302B  MPG      3.8    27.4    -      -       +      +
    306B  MPG      4.3    29.2    -      -       +      +
    118C  ALA*     4.0    25.1    -      -       +      +
    122C  ILE*     5.7     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 52 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48B  GLU*     3.0    25.6    +      -       +      +
     51B  VAL*     1.3    81.1    -      -       -      +
     53B  THR*     1.3    58.2    +      -       -      +
     55B  LEU*     3.3     6.4    +      -       -      +
     56B  ILE*     3.2    32.6    +      -       +      +
    100B  LEU*     3.4    37.8    -      -       +      +
    103B  LEU*     4.0    14.1    -      -       +      -
    104B  ASP*     3.6    25.6    -      -       -      +
    107B  LEU*     3.3    34.1    -      -       +      -
    302B  MPG      3.9    22.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 53 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34B  PHE*     3.6     7.2    -      -       +      -
     49B  PHE      2.6    23.9    +      -       -      -
     50B  TYR      4.1     0.2    -      -       -      -
     52B  ILE*     1.3    74.0    -      -       -      +
     54B  ILE*     1.3    55.9    +      -       -      +
     56B  ILE*     4.3     6.1    -      -       +      -
     57B  PRO*     2.8    31.2    -      -       +      +
    104B  ASP*     2.7    26.1    +      -       -      +
    224B  LYS      5.1     2.2    -      -       -      +
    227B  PHE*     5.7     1.1    -      -       +      -
    228B  GLY*     3.5    31.9    -      -       -      -
    231B  LEU*     3.5     7.9    -      -       +      +
    232B  LEU*     3.8    23.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 54 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31B  MET*     3.7    11.5    -      -       +      +
     34B  PHE*     3.8    24.5    -      -       +      +
     35B  ILE*     3.8    37.2    -      -       +      +
     50B  TYR*     2.8    35.3    +      -       +      +
     51B  VAL      3.9     2.7    -      -       -      +
     53B  THR*     1.3    76.5    -      -       -      +
     55B  LEU*     1.3    64.5    +      -       -      +
     56B  ILE      3.3     0.2    -      -       -      -
     57B  PRO*     3.3     8.5    -      -       -      +
     58B  ALA*     3.1    19.6    +      -       -      +
    306B  MPG      3.7    53.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 55 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51B  VAL*     3.0    22.7    +      -       +      +
     52B  ILE*     3.3     6.7    +      -       -      +
     54B  ILE*     1.3    77.0    -      -       -      +
     56B  ILE*     1.3    56.9    +      -       -      +
     58B  ALA*     3.3     4.7    +      -       -      +
     59B  ILE*     2.9    52.0    +      -       +      +
    100B  LEU*     3.8    14.4    -      -       +      -
    302B  MPG      3.7    43.5    -      -       +      +
    306B  MPG      3.8    31.1    -      -       +      +
    121C  GLY*     4.1    19.5    -      -       -      +
    122C  ILE*     5.0     1.6    -      -       +      +
    125C  PHE*     4.6     6.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 56 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52B  ILE*     3.2    23.9    +      -       +      +
     53B  THR*     4.3     4.7    -      -       +      +
     54B  ILE      3.3     0.4    -      -       -      -
     55B  LEU*     1.3    77.0    -      -       -      +
     57B  PRO*     1.4    72.0    -      -       +      +
     59B  ILE*     3.3     4.2    +      -       -      +
     60B  ALA*     3.1    19.9    +      -       -      +
     97B  THR*     3.8    18.7    -      -       -      +
    100B  LEU*     3.7    35.0    -      -       +      +
    101B  LEU*     3.8    31.0    -      -       +      +
    104B  ASP*     4.1     7.6    -      -       -      +
    224B  LYS*     3.7    37.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 57 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27B  MET*     3.6    35.2    -      -       -      +
     31B  MET*     4.0    18.2    -      -       +      +
     34B  PHE*     4.1    13.7    -      -       +      -
     53B  THR*     2.8    30.3    -      -       +      +
     54B  ILE      3.3     9.9    -      -       -      +
     56B  ILE*     1.4    86.2    -      -       +      +
     58B  ALA*     1.4    53.3    +      -       -      +
     60B  ALA*     4.3     6.7    -      -       +      -
     61B  ALA*     2.7    37.0    +      -       -      +
    224B  LYS*     5.3     3.8    -      -       +      +
    225B  VAL*     4.7     6.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 58 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31B  MET*     3.5    25.2    -      -       -      +
     54B  ILE      3.1    15.3    +      -       -      +
     55B  LEU*     3.5     9.2    -      -       +      +
     56B  ILE      3.3     0.2    -      -       -      -
     57B  PRO*     1.4    75.7    -      -       -      +
     59B  ILE*     1.3    64.4    +      -       -      +
     61B  ALA*     3.2     3.9    +      -       -      +
     62B  ALA*     3.0    25.3    +      -       -      +
    306B  MPG      4.2    24.2    -      -       +      +
    125C  PHE*     3.6    16.7    -      -       +      -
----------------------------------------------------------
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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  LEU*     2.9    40.5    +      -       +      +
     56B  ILE      3.7     3.8    -      -       -      +
     58B  ALA*     1.3    74.2    -      -       -      +
     60B  ALA*     1.3    60.1    +      -       -      +
     62B  ALA*     3.3     2.3    +      -       -      +
     63B  SER*     2.9    26.9    +      -       -      -
     92B  ALA      5.5     0.2    -      -       -      +
     93B  ASP*     3.9    20.2    -      -       -      +
     96B  PHE*     4.5     4.7    -      -       +      -
     97B  THR*     3.7    19.5    -      -       +      -
    100B  LEU*     3.8    14.1    -      -       +      -
    302B  MPG      3.6    64.6    -      -       +      +
    125C  PHE*     4.2     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 60 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27B  MET*     3.7    30.5    -      -       +      -
     56B  ILE      3.1    15.5    +      -       -      +
     57B  PRO      3.9     0.7    -      -       -      +
     59B  ILE*     1.3    75.7    -      -       -      +
     61B  ALA*     1.3    61.5    +      -       -      +
     64B  TYR*     2.8    35.6    +      -       +      -
     93B  ASP*     3.6    22.4    -      -       -      +
    224B  LYS*     3.8    14.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 61 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24B  THR*     3.7    14.4    -      -       -      +
     27B  MET*     3.7    19.4    -      -       +      +
     28B  LEU*     4.1     8.7    -      -       -      +
     31B  MET*     5.9     0.4    -      -       -      -
     57B  PRO      2.7    22.8    +      -       -      +
     58B  ALA*     3.8     2.9    -      -       -      +
     60B  ALA*     1.3    72.4    -      -       -      +
     62B  ALA*     1.3    58.1    +      -       -      +
     64B  TYR*     3.4     3.3    +      -       -      -
     65B  LEU*     2.9    30.8    +      -       -      +
    306B  MPG      3.5    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 62 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58B  ALA      3.0    16.9    +      -       -      +
     59B  ILE      3.7     2.9    -      -       -      +
     61B  ALA*     1.3    76.8    -      -       -      +
     63B  SER*     1.3    56.8    +      -       -      +
     65B  LEU*     3.5     1.1    +      -       -      -
     66B  SER*     3.0    25.8    +      -       -      -
    302B  MPG      3.8    17.7    -      -       +      +
    306B  MPG      3.9    10.9    -      -       +      +
    125C  PHE*     3.8    22.2    -      -       +      -
    129C  THR*     4.2     7.6    -      -       +      -
    145C  PHE*     3.4    17.2    -      -       +      -
    148C  ILE*     5.2     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 63 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59B  ILE      2.9    17.7    +      -       -      -
     60B  ALA      3.7     3.4    -      -       -      -
     62B  ALA*     1.3    74.7    -      -       -      +
     64B  TYR*     1.3    65.4    +      -       -      +
     66B  SER*     2.8    22.9    +      -       -      -
     67B  MET*     3.1    23.8    +      -       -      +
     89B  ALA*     3.4    22.6    +      -       -      +
     93B  ASP*     3.4    24.6    +      -       -      +
    302B  MPG      3.9    13.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 64 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19B  TRP      4.1    10.3    -      -       -      -
     20B  LEU*     3.7    41.8    -      -       +      +
     23B  GLY*     3.9    13.0    -      -       -      -
     24B  THR*     3.3    22.5    +      -       -      +
     27B  MET*     4.7     7.4    -      -       +      -
     60B  ALA*     2.8    33.1    +      -       +      +
     61B  ALA      3.8     1.8    -      -       -      +
     63B  SER*     1.3    73.1    -      -       -      +
     65B  LEU*     1.3    58.0    +      -       -      +
     67B  MET*     3.3    15.5    +      -       +      +
     68B  PHE*     2.9    27.5    +      -       -      +
     90B  ARG*     3.1    16.8    +      -       -      -
     93B  ASP*     4.6     9.2    -      -       -      -
    213B  THR      5.7     0.4    -      -       -      -
    216B  PHE      3.5     0.2    +      -       -      -
    217B  MET*     3.4    25.5    -      -       +      -
    220B  ASP*     2.6    36.5    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 65 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24B  THR*     3.3    21.2    +      -       +      +
     61B  ALA      2.9    18.4    +      -       -      +
     62B  ALA*     3.8     4.3    -      -       -      +
     63B  SER      3.3     0.2    -      -       -      -
     64B  TYR*     1.3    77.4    -      -       -      +
     66B  SER*     1.3    62.0    +      -       -      +
     68B  PHE*     3.2    15.4    +      -       +      +
     69B  PHE*     3.1    56.5    +      -       +      -
    306B  MPG      4.1    11.7    -      -       +      -
    144C  ALA*     4.8     6.5    -      -       +      -
    145C  PHE*     4.1    12.1    -      -       +      -
    148C  ILE*     3.7    30.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 66 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62B  ALA      3.0    14.8    +      -       -      -
     63B  SER*     2.8    21.5    +      -       -      -
     65B  LEU*     1.3    75.4    -      -       -      +
     67B  MET*     1.3    57.1    +      -       -      +
     69B  PHE*     3.2     8.6    +      -       -      +
     71B  PHE*     2.9    53.2    +      -       -      +
     89B  ALA*     4.0     2.6    -      -       -      +
    302B  MPG      3.8    16.5    -      -       -      +
    132C  VAL*     4.3     4.7    -      -       -      -
    145C  PHE*     3.5    19.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 67 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20B  LEU*     3.6    19.9    -      -       +      +
     63B  SER*     3.1    29.0    +      -       -      +
     64B  TYR*     3.7    29.2    -      -       +      +
     66B  SER*     1.3    76.2    +      -       -      +
     68B  PHE*     1.3    60.8    +      -       -      +
     70B  GLY*     2.9    19.6    +      -       -      -
     71B  PHE      3.6     7.4    -      -       -      +
     72B  GLY      4.6     0.2    -      -       -      +
     87B  TYR*     3.7    41.0    +      -       +      -
     89B  ALA*     3.9    14.4    -      -       +      -
     90B  ARG*     3.8    50.9    -      -       +      +
     93B  ASP*     5.7     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 68 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11B  LEU*     4.6    23.1    -      -       +      -
     17B  GLY*     3.6    28.3    -      -       -      -
     20B  LEU*     3.8    16.5    -      -       +      +
     21B  ALA*     4.0    20.6    -      -       +      -
     24B  THR*     4.8     1.1    -      -       -      +
     64B  TYR      2.9    15.0    +      -       -      +
     65B  LEU*     3.2    20.6    +      -       +      +
     67B  MET*     1.3    75.7    -      -       -      +
     69B  PHE*     1.3    91.6    +      +       -      +
     70B  GLY      3.5     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 69 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65B  LEU*     3.1    50.7    +      -       +      -
     66B  SER*     3.2     7.8    +      -       -      +
     67B  MET      3.1     0.8    -      -       -      -
     68B  PHE*     1.3   101.7    -      +       -      +
     70B  GLY*     1.3    58.8    +      -       -      +
     71B  PHE*     3.3     2.6    +      -       +      +
    136C  THR*     4.8     4.0    +      -       -      +
    138C  VAL*     3.5    38.5    -      -       +      +
    140C  VAL*     4.1    31.4    -      -       +      -
    141C  ALA*     3.5    31.0    -      -       +      -
    144C  ALA*     4.5     6.5    -      -       +      -
    145C  PHE*     4.3     5.4    -      +       +      -
----------------------------------------------------------
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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