Contacts of the helix formed by residues 47 - 75 (chain F) in PDB entry 2YW7


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 PHE 47 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42F  VAL*     2.8    26.1    -      -       +      +
     43F  VAL*     3.6     8.7    -      -       -      +
     44F  GLY*     3.0    40.1    -      -       -      +
     45F  PRO      3.3     3.6    -      -       -      -
     46F  ASN*     1.3    76.4    +      -       -      +
     48F  ILE*     1.3    79.7    +      -       +      +
     50F  VAL*     2.9    31.0    +      -       -      +
     51F  HIS*     3.4    33.1    +      +       -      -
    102F  VAL*     3.9    12.3    -      -       +      +
    150J  TRP*     3.9    16.8    -      +       -      -
    151J  PHE*     3.8    31.9    -      +       -      -
    154J  ALA*     4.1     8.7    -      -       +      -
    155J  HIS*     4.3    12.6    -      +       -      -
----------------------------------------------------------
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Residues in contact with ILE 48 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45F  PRO      4.6     3.6    -      -       -      +
     46F  ASN*     3.6    23.3    -      -       +      +
     47F  PHE*     1.3   104.8    -      -       +      +
     49F  GLY*     1.3    64.1    +      -       -      +
     50F  VAL      3.3     0.2    -      -       -      -
     51F  HIS*     3.2    18.3    -      -       +      +
     52F  GLU*     2.8    36.0    +      -       +      +
    151J  PHE*     4.5    14.1    -      -       +      -
    155J  HIS*     6.0     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 49 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46F  ASN      3.1    11.8    +      -       -      -
     47F  PHE      3.1     0.2    +      -       -      -
     48F  ILE*     1.3    78.5    -      -       -      +
     50F  VAL*     1.3    60.0    +      -       -      +
     52F  GLU*     3.3    13.5    +      -       -      +
     53F  MET*     2.8    30.1    +      -       -      +
    151F  PHE*     5.9     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 50 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38F  VAL*     4.1    12.3    -      -       +      -
     42F  VAL*     3.9    26.2    -      -       +      -
     46F  ASN      4.4     0.4    +      -       -      +
     47F  PHE      2.9    12.8    +      -       -      +
     49F  GLY*     1.3    74.0    -      -       -      +
     51F  HIS*     1.3    66.5    +      -       -      +
     53F  MET*     2.8    10.6    +      -       +      +
     54F  ILE*     2.7    45.3    +      -       +      +
    102F  VAL*     3.4    32.5    -      -       +      -
    105F  HIS*     5.5     0.4    -      -       +      -
    106F  LEU*     3.9    25.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 51 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39F  HIS*     2.9    60.7    +      +       -      +
     40F  TRP*     6.0     0.2    -      -       -      -
     42F  VAL*     3.6    18.2    +      -       +      +
     47F  PHE*     3.4    28.1    +      +       -      -
     48F  ILE*     3.2    22.2    -      -       +      +
     50F  VAL*     1.3    78.0    -      -       -      +
     52F  GLU*     1.3    62.1    +      -       +      +
     53F  MET      3.3     0.2    +      -       -      -
     54F  ILE*     3.5     2.2    +      -       -      +
     55F  ASP*     3.3    30.9    +      -       -      +
    150J  TRP*     4.8    10.5    -      +       -      -
----------------------------------------------------------
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Residues in contact with GLU 52 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48F  ILE*     2.8    22.9    +      -       +      +
     49F  GLY*     3.3    15.3    -      -       -      +
     50F  VAL      3.1     0.6    -      -       -      -
     51F  HIS*     1.3    76.3    -      -       +      +
     53F  MET*     1.3    57.5    +      -       -      +
     55F  ASP*     4.2     6.2    -      -       -      +
     56F  PRO*     3.2    22.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 53 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49F  GLY      2.8    10.1    +      -       -      +
     50F  VAL*     2.8    31.5    +      -       -      +
     52F  GLU*     1.3    69.9    -      -       -      +
     54F  ILE*     1.3    69.8    +      -       +      +
     55F  ASP      3.2     2.1    +      -       -      -
     56F  PRO*     3.5    11.1    -      -       -      +
     57F  GLN*     3.7     3.5    +      -       -      +
    106F  LEU*     3.9    26.5    -      -       +      -
    109F  LEU*     6.1     0.7    -      -       +      -
    148F  PHE*     3.6    44.2    -      -       +      -
    151F  PHE*     3.4    41.3    -      -       +      -
    152F  VAL*     3.7    22.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 54 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35F  LEU*     3.3    34.3    -      -       +      +
     38F  VAL*     3.8    24.5    -      -       +      -
     39F  HIS*     3.9    19.5    -      -       +      -
     50F  VAL*     2.7    35.9    +      -       +      +
     51F  HIS*     3.8     5.6    -      -       -      +
     53F  MET*     1.3    78.1    -      -       +      +
     55F  ASP*     1.3    53.0    +      -       -      +
     57F  GLN*     3.2     6.0    +      -       -      +
     58F  VAL*     2.7    51.6    +      -       +      +
    109F  LEU*     3.9    16.8    -      -       +      -
    148F  PHE*     4.9     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 55 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36F  LYS*     5.2     7.1    -      -       -      -
     39F  HIS*     3.9    19.6    +      -       -      -
     51F  HIS*     3.3    19.8    +      -       -      +
     52F  GLU*     4.2     4.4    -      -       -      +
     53F  MET      3.2     1.0    -      -       -      -
     54F  ILE*     1.3    77.5    -      -       -      +
     56F  PRO*     1.4    72.6    -      -       +      +
     57F  GLN      3.1     1.0    +      -       -      -
     58F  VAL*     3.2    14.0    +      -       -      +
     59F  GLU*     3.2    15.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 56 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52F  GLU      3.2    19.5    -      -       -      +
     53F  MET*     3.5     8.3    -      -       -      +
     55F  ASP*     1.4    93.3    -      -       +      +
     57F  GLN*     1.3    55.0    +      -       -      +
     59F  GLU*     3.6     6.8    +      -       +      +
     60F  LEU*     3.0    28.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 57 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35F  LEU*     3.6    12.1    -      -       +      -
     53F  MET      3.7    10.9    +      -       -      +
     54F  ILE*     3.2     8.7    +      -       -      +
     55F  ASP      3.1     0.2    -      -       -      -
     56F  PRO*     1.3    76.2    -      -       -      +
     58F  VAL*     1.3    67.4    +      -       -      +
     59F  GLU      3.0     1.8    -      -       -      -
     60F  LEU*     2.8    23.4    +      -       -      +
     61F  VAL*     2.7    38.3    +      -       +      +
    113F  TYR*     2.5    44.1    +      -       -      +
    144F  GLU      4.6     3.1    +      -       -      +
    145F  LEU*     4.7     3.8    -      -       -      +
    148F  PHE*     3.3    38.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 58 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32F  HIS*     4.2     4.8    -      -       -      +
     35F  LEU*     3.5    24.2    -      -       +      +
     36F  LYS*     3.9    26.7    -      -       +      +
     54F  ILE*     2.7    44.0    +      -       +      +
     55F  ASP*     3.5     8.7    -      -       -      +
     57F  GLN*     1.3    71.2    -      -       -      +
     59F  GLU*     1.3    61.2    +      -       -      +
     61F  VAL*     4.0     1.7    -      -       -      +
     62F  ARG*     2.9    63.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 59 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59C  GLU*     4.9     6.4    -      -       -      +
     62C  ARG*     5.2     1.6    +      -       -      -
     55F  ASP      3.2     9.4    +      -       -      +
     56F  PRO*     3.7     9.4    -      -       +      +
     57F  GLN      3.0     0.6    -      -       -      -
     58F  VAL*     1.3    79.9    -      -       -      +
     60F  LEU*     1.3    67.9    +      -       -      +
     62F  ARG*     3.0    32.4    +      -       -      +
     63F  GLY*     3.0    21.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 60 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56F  PRO      3.0    15.7    +      -       -      +
     57F  GLN*     2.8    37.0    +      -       -      +
     59F  GLU*     1.3    72.1    -      -       -      +
     61F  VAL*     1.3    61.2    +      -       +      +
     63F  GLY*     3.5     1.4    +      -       -      -
     64F  TYR*     2.9    75.7    +      -       +      +
    144F  GLU*     3.8    25.6    -      -       +      +
    145F  LEU*     5.1     1.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 61 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28F  TYR*     3.7    25.6    -      -       +      +
     31F  LEU*     3.3    36.6    -      -       +      -
     32F  HIS*     3.7    19.1    -      -       +      -
     35F  LEU*     4.1     0.7    -      -       +      -
     57F  GLN*     2.7    44.4    +      -       +      +
     58F  VAL      4.0     0.7    -      -       -      +
     60F  LEU*     1.3    70.8    -      -       +      +
     62F  ARG*     1.3    66.2    +      -       -      +
     63F  GLY      3.0     1.6    -      -       -      -
     64F  TYR*     2.8    20.9    +      -       +      +
     65F  ALA*     2.9    12.1    +      -       -      +
    145F  LEU*     5.3     7.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 62 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32C  HIS*     5.1     2.2    -      -       -      -
     40C  TRP*     5.3     0.3    -      -       -      -
     59C  GLU*     5.4     1.0    +      -       -      -
     62C  ARG*     3.1    68.1    +      -       -      +
     32F  HIS*     3.2    45.7    +      -       +      +
     36F  LYS*     3.9    21.0    -      -       -      +
     58F  VAL*     2.9    40.8    +      -       -      +
     59F  GLU*     3.2    36.1    +      -       -      +
     61F  VAL*     1.3    76.1    -      -       -      +
     63F  GLY*     1.3    58.7    +      -       -      +
     65F  ALA*     3.4     6.4    -      -       -      +
     66F  ASP*     3.1    24.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 63 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59F  GLU      3.0    12.6    +      -       -      -
     60F  LEU      3.9     3.4    -      -       -      -
     62F  ARG*     1.3    75.3    -      -       -      +
     64F  TYR*     1.3    62.1    +      -       -      +
     65F  ALA      3.2     1.3    -      -       -      -
     66F  ASP*     2.9    14.2    +      -       -      +
     67F  GLU*     2.9    32.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 64 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28F  TYR*     3.2    21.8    -      +       +      -
     60F  LEU*     2.9    59.0    +      -       +      +
     61F  VAL*     2.8    14.7    +      -       +      +
     63F  GLY*     1.3    70.1    -      -       -      +
     65F  ALA*     1.3    66.4    +      -       -      +
     66F  ASP      3.0     0.6    +      -       -      -
     67F  GLU*     3.2    16.5    +      -       -      +
     68F  VAL*     3.2    26.5    +      -       -      +
    140F  ALA      5.0     0.3    +      -       -      -
    141F  HIS*     3.5    51.0    -      +       +      +
    144F  GLU*     3.2    26.6    -      -       +      +
    145F  LEU*     4.1    16.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 65 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40C  TRP*     3.8     7.3    -      -       +      -
     25F  LEU*     3.4    12.3    -      -       +      +
     28F  TYR*     3.3    20.9    -      -       +      -
     29F  ASN*     3.5    24.9    -      -       -      +
     32F  HIS*     4.6     3.6    -      -       +      -
     61F  VAL      2.9     9.3    +      -       -      +
     62F  ARG*     3.4    15.0    -      -       -      +
     64F  TYR*     1.3    76.6    -      -       -      +
     66F  ASP*     1.3    59.1    +      -       -      +
     68F  VAL*     3.2    20.8    -      -       -      +
     69F  ALA*     3.3     9.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 66 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36C  LYS*     2.7    38.3    +      -       -      -
     39C  HIS*     5.6     1.6    +      -       -      -
     40C  TRP*     3.4    19.8    +      -       -      +
     62F  ARG      3.1    18.5    +      -       -      +
     63F  GLY*     2.9    21.4    +      -       -      +
     65F  ALA*     1.3    77.5    -      -       -      +
     67F  GLU*     1.3    63.6    +      -       +      +
     69F  ALA*     3.2     5.5    +      -       -      +
     70F  GLU*     3.2    19.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 67 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63F  GLY      2.9    20.4    +      -       -      +
     64F  TYR*     3.2    19.0    +      -       -      +
     66F  ASP*     1.3    74.6    -      -       +      +
     68F  VAL*     1.3    61.0    +      -       -      +
     70F  GLU*     3.3    20.1    +      -       -      +
     71F  ARG*     3.5    10.9    +      -       -      +
    137F  LEU*     3.5    21.9    -      -       +      +
    141F  HIS*     3.0    27.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 68 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21F  LEU*     4.4    17.2    -      -       +      +
     24F  GLN*     4.7     3.1    -      -       +      -
     25F  LEU*     3.9    26.9    -      -       +      +
     28F  TYR*     4.4     5.6    -      -       +      -
     64F  TYR      3.2    12.9    +      -       -      +
     65F  ALA*     3.2    23.3    -      -       -      +
     67F  GLU*     1.3    71.5    -      -       -      +
     69F  ALA*     1.3    56.8    +      -       -      +
     70F  GLU      3.0     5.6    +      -       -      -
     71F  ARG*     3.3     5.8    +      -       -      +
     72F  ILE*     3.0    33.5    +      -       -      +
    137F  LEU*     4.1     9.4    -      -       +      -
    138F  LEU*     4.0    18.2    -      -       +      -
    141F  HIS*     3.8    20.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 69 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40C  TRP*     3.4    48.2    -      -       +      +
     25F  LEU*     4.4     3.4    -      -       +      -
     65F  ALA      3.3    16.1    +      -       -      +
     66F  ASP      3.2     5.4    +      -       -      +
     68F  VAL*     1.3    75.4    -      -       -      +
     70F  GLU*     1.3    59.8    +      -       -      +
     72F  ILE*     4.3     1.6    -      -       -      -
     73F  ALA*     3.9     7.3    -      -       -      +
     79F  PRO*     3.3    36.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 70 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66F  ASP      3.2     8.7    +      -       -      +
     67F  GLU*     3.3    15.3    -      -       -      +
     68F  VAL      3.0     0.4    -      -       -      -
     69F  ALA*     1.3    78.2    -      -       -      +
     71F  ARG*     1.3    59.9    +      -       +      +
     72F  ILE      3.4     0.2    -      -       -      -
     73F  ALA*     3.5     4.7    +      -       -      +
     74F  THR*     2.8    30.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 71 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21F  LEU*     3.8    15.9    -      -       +      +
     67F  GLU      3.5     8.4    +      -       -      +
     68F  VAL*     3.3     6.3    +      -       -      +
     70F  GLU*     1.3    78.2    -      -       +      +
     72F  ILE*     1.3    55.6    +      -       -      +
     74F  THR*     3.3    17.4    -      -       -      +
     75F  LEU*     2.7    62.3    +      -       -      +
    131F  ASP*     2.7    28.0    +      -       -      -
    133F  VAL*     3.3    25.7    -      -       -      +
    134F  SER*     3.1    35.9    -      -       -      +
    137F  LEU*     4.3    14.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 72 (chain F). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18F  ALA*     4.2    10.5    -      -       +      +
     21F  LEU*     3.5    44.4    -      -       +      +
     22F  GLN*     3.7    13.0    -      -       +      +
     25F  LEU*     4.0    22.7    -      -       +      -
     68F  VAL      3.0    17.3    +      -       -      +
     70F  GLU      3.4     0.2    -      -       -      -
     71F  ARG*     1.3    75.8    -      -       -      +
     73F  ALA*     1.3    53.7    +      -       -      +
     75F  LEU*     3.5     8.7    +      -       -      +
     76F  GLY      3.4     2.3    +      -       -      -
     77F  LYS*     2.7    57.8    +      -       +      +
     78F  SER      3.9     2.5    -      -       -      +
     79F  PRO*     3.5    23.8    -      -       +      -
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Residues in contact with ALA 73 (chain F). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40C  TRP      4.4    11.2    -      -       -      +
     99C  ARG*     4.2    15.7    +      -       +      +
     69F  ALA      3.9    11.4    -      -       -      +
     70F  GLU*     3.5     8.0    +      -       -      +
     71F  ARG      3.2     0.4    -      -       -      -
     72F  ILE*     1.3    75.3    -      -       -      +
     74F  THR*     1.3    57.8    +      -       -      +
     76F  GLY*     2.7    25.3    +      -       -      -
     77F  LYS      3.0    13.5    +      -       -      +
     79F  PRO*     3.8    10.2    -      -       +      +
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Residues in contact with THR 74 (chain F). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70F  GLU*     2.8    19.5    +      -       -      +
     71F  ARG*     3.3    27.7    -      -       -      +
     73F  ALA*     1.3    71.8    -      -       -      +
     75F  LEU*     1.3    71.0    +      -       +      +
     76F  GLY*     2.8     7.3    +      -       -      -
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Residues in contact with LEU 75 (chain F). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14F  ALA*     4.1    37.4    -      -       +      +
     17F  VAL*     3.5    34.3    -      -       +      -
     18F  ALA*     4.2     7.4    -      -       +      +
     21F  LEU*     4.0    13.2    -      -       +      -
     71F  ARG*     2.7    48.9    +      -       -      +
     72F  ILE*     3.8     4.5    -      -       -      +
     73F  ALA      3.2     0.2    -      -       -      -
     74F  THR*     1.3    76.8    -      -       +      +
     76F  GLY*     1.3    59.2    +      -       -      +
     77F  LYS*     3.3    12.9    +      -       -      +
    131F  ASP*     4.3     3.6    -      -       -      +
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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