Contacts of the helix formed by residues 52 - 80 (chain A) in PDB entry 4XNW


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 TYR 52 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  GLY*     2.8    35.5    +      -       -      +
     51A  PHE*     1.3    89.5    -      +       +      +
     53A  TYR*     1.3    63.9    +      +       +      +
     55A  PRO*     3.2    17.0    -      -       -      +
     56A  ALA      3.5     4.9    +      -       -      -
    112A  PHE*     3.8     5.4    -      +       -      -
    114A  LYS*     3.0    30.8    +      -       -      -
    256C  ARG*     3.3    43.0    +      -       +      -
    260C  TYR*     3.3    31.9    +      -       +      +
   1050C  GLU*     5.7     0.5    +      -       -      -
   1051C  GLU      5.0     4.1    +      -       -      -
   1053C  GLU*     3.2    42.8    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 53 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48A  GLY*     3.1    32.1    +      -       -      -
     49A  PHE*     3.2    21.2    +      +       +      +
     52A  TYR*     1.3    87.0    -      -       +      +
     54A  LEU*     1.3    64.9    +      -       -      +
     56A  ALA*     3.4     7.0    +      -       -      +
     57A  VAL*     3.2    27.8    +      -       +      +
    256C  ARG*     3.6    18.2    -      -       +      -
    259C  ILE*     2.9    53.5    -      -       +      +
    260C  TYR*     4.0    10.5    -      +       -      -
    263C  ILE*     4.5    11.6    -      -       +      +
   1053C  GLU*     2.6    35.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 54 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  PHE*     2.6    51.8    +      -       +      +
     50A  GLN*     4.6     4.0    -      -       -      -
     53A  TYR*     1.3    69.4    -      -       -      +
     55A  PRO*     1.3    71.2    -      -       +      +
     57A  VAL*     3.2    10.4    +      -       +      +
     58A  TYR*     3.0    53.6    +      -       +      +
    111A  TYR*     4.0    33.2    -      -       +      +
    307A  GLN*     4.6    11.7    -      -       -      +
    310A  ARG*     6.3     0.7    -      -       +      +
    311A  GLY*     3.9    18.6    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 55 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50A  GLN      3.3    15.3    -      -       -      +
     51A  PHE      3.6    13.7    -      -       -      +
     52A  TYR      3.2    21.8    -      -       -      +
     54A  LEU*     1.3    95.4    -      -       +      +
     56A  ALA*     1.3    54.3    +      -       -      +
     58A  TYR*     3.3    13.1    +      -       +      +
     59A  ILE*     2.9    32.4    +      -       -      +
    108A  ILE*     3.8    19.0    -      -       +      +
    111A  TYR*     3.8    12.6    -      -       +      -
    112A  PHE*     3.8    27.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 56 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52A  TYR      3.5    11.9    +      -       -      +
     53A  TYR*     3.4    10.5    +      -       -      +
     54A  LEU      3.2     0.6    -      -       -      -
     55A  PRO*     1.3    75.0    -      -       -      +
     57A  VAL*     1.3    66.5    +      -       +      +
     59A  ILE*     3.1     7.5    +      -       -      +
     60A  LEU*     3.1    25.2    +      -       -      +
    112A  PHE*     4.4     0.8    -      -       -      -
    260C  TYR*     3.9    24.5    -      -       +      -
    263C  ILE*     5.2    10.1    -      -       +      -
    264C  ILE*     5.9     3.1    -      -       +      -
    322C  ILE*     4.3     2.8    -      -       +      +
    326C  LEU*     4.1    18.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 57 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  PHE*     5.6     5.8    -      -       +      -
     53A  TYR      3.2    15.0    +      -       -      +
     54A  LEU*     3.2    15.2    +      -       +      +
     56A  ALA*     1.3    76.6    -      -       -      +
     58A  TYR*     1.3    61.7    +      -       +      +
     60A  LEU*     3.1    13.5    +      -       +      +
     61A  VAL*     2.8    39.2    +      -       +      +
    311A  GLY      5.5     5.2    -      -       -      +
    315A  LEU*     4.6    12.6    -      -       +      -
    263C  ILE*     4.7    20.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 58 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54A  LEU*     3.0    51.9    +      -       +      +
     55A  PRO*     3.6     7.0    -      -       +      +
     57A  VAL*     1.3    77.7    -      -       +      +
     59A  ILE*     1.3    54.4    +      -       -      +
     61A  VAL*     3.6     6.5    -      -       +      +
     62A  PHE*     2.6    37.6    +      -       -      +
    104A  LEU*     3.9    18.1    -      -       +      +
    107A  LEU*     3.2    36.9    -      -       +      +
    108A  ILE*     3.4    23.5    -      -       +      +
    111A  TYR*     4.2     8.6    +      +       -      -
    310A  ARG*     3.9    13.0    +      -       -      +
    311A  GLY*     3.8    19.5    +      -       -      -
    314A  SER*     3.4    30.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 59 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  PRO      2.9    20.1    +      -       -      +
     56A  ALA*     3.1     6.7    +      -       -      +
     58A  TYR*     1.3    74.7    -      -       -      +
     60A  LEU*     1.3    58.2    +      -       -      +
     62A  PHE*     3.1     7.3    +      -       +      +
     63A  ILE*     2.9    42.8    +      -       +      +
    108A  ILE*     3.6    22.2    -      -       +      +
    112A  PHE*     3.9    22.7    -      -       +      -
    322C  ILE*     3.4    25.1    -      -       +      -
    326C  LEU*     4.1    22.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 60 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56A  ALA      3.1    12.5    +      -       -      +
     57A  VAL*     3.1    13.9    +      -       +      +
     59A  ILE*     1.3    72.8    -      -       -      +
     61A  VAL*     1.3    65.8    +      -       +      +
     63A  ILE*     3.9     4.4    -      -       +      +
     64A  ILE*     3.0    41.4    +      -       +      +
    263C  ILE*     4.0    21.1    -      -       +      -
    264C  ILE*     4.6    13.2    -      -       +      -
    267C  THR*     3.7    36.1    -      -       +      +
    319C  VAL*     3.9    28.9    -      -       +      -
    322C  ILE*     4.3    14.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 61 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  VAL*     2.8    26.4    +      -       +      +
     58A  TYR*     3.6    11.2    -      -       +      +
     60A  LEU*     1.3    70.9    -      -       +      +
     62A  PHE*     1.3    56.9    +      -       -      +
     65A  GLY*     2.7    35.5    +      -       -      -
    100A  TYR*     5.6     0.4    -      -       +      -
    101A  VAL*     4.8     1.0    -      -       +      +
    104A  LEU*     3.7    16.8    -      -       +      +
    314A  SER*     3.5    29.4    -      -       -      +
    315A  LEU*     3.8    29.4    -      -       +      -
    317A  SER*     4.8     9.4    -      -       -      -
    318A  CYS*     4.1    20.6    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 62 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  TYR      2.6    22.2    +      -       -      +
     59A  ILE*     3.1    11.0    +      -       +      +
     61A  VAL*     1.3    73.2    -      -       -      +
     63A  ILE*     1.3    74.0    +      -       +      +
     66A  PHE*     2.8    49.5    +      +       +      +
    101A  VAL*     3.3    40.8    -      -       +      +
    102A  LEU*     4.7     5.2    -      -       +      -
    104A  LEU*     3.6    16.6    -      -       +      +
    105A  PRO*     4.0    25.4    -      -       +      -
    108A  ILE*     4.4     4.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 63 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59A  ILE*     2.9    34.6    +      -       +      +
     60A  LEU*     4.0     4.3    -      -       -      +
     62A  PHE*     1.3    89.8    -      -       +      +
     64A  ILE*     1.3    66.7    +      -       +      +
     66A  PHE*     3.0    16.2    +      -       -      +
     67A  LEU*     3.1    28.4    +      -       +      +
     64C  ILE*     5.8     7.4    -      -       +      -
    318C  CYS*     4.0    20.2    -      -       +      +
    319C  VAL*     3.9    34.1    -      -       +      -
    322C  ILE*     5.0     9.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 64 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  LEU*     3.0    36.4    +      -       +      +
     61A  VAL*     5.3     0.7    -      -       -      -
     63A  ILE*     1.3    82.3    -      -       +      +
     65A  GLY*     1.3    52.6    -      -       -      +
     67A  LEU*     3.2     7.7    +      -       +      +
     68A  GLY*     2.8    35.5    +      -       -      +
    318A  CYS*     3.7    28.0    -      -       +      +
    267C  THR*     4.5    18.4    -      -       +      -
    271C  VAL*     5.0    17.0    -      -       +      -
    315C  LEU*     5.2    16.2    -      -       +      -
    319C  VAL*     4.9    11.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 65 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  VAL      2.7    23.5    +      -       -      -
     62A  PHE      3.9     0.2    -      -       -      -
     64A  ILE*     1.3    72.1    -      -       -      +
     66A  PHE*     1.3    61.8    +      -       -      +
     68A  GLY      4.6     0.2    -      -       -      -
     69A  ASN*     2.9    31.6    +      -       -      +
     98A  PHE*     5.3     0.2    -      -       -      -
    101A  VAL*     4.1    13.7    -      -       -      +
    317A  SER      3.7    20.4    -      -       -      -
    318A  CYS*     3.8     5.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 66 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  PHE*     2.8    38.1    +      +       +      +
     63A  ILE*     3.0     7.4    +      -       -      +
     65A  GLY*     1.3    74.9    -      -       -      +
     67A  LEU*     1.3    59.5    +      -       +      +
     70A  SER*     2.7    49.9    +      -       -      -
     98A  PHE*     3.5    30.6    -      +       -      -
    101A  VAL*     3.9     5.9    -      -       +      +
    102A  LEU*     3.8    22.9    -      -       +      -
     60C  LEU*     4.6    14.1    -      -       +      -
     64C  ILE*     4.6    19.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 67 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63A  ILE*     3.1    28.9    +      -       +      +
     64A  ILE*     3.6     6.5    -      -       -      +
     66A  PHE*     1.3    78.7    -      -       +      +
     68A  GLY*     1.3    67.9    +      -       -      +
     71A  VAL*     3.1    31.8    +      -       +      +
     60C  LEU*     3.8    27.1    -      -       +      -
     61C  VAL*     4.9     2.0    -      -       +      +
     64C  ILE*     3.4    32.1    -      -       +      -
    315C  LEU*     3.9    38.1    -      -       +      -
    318C  CYS*     4.0    17.0    -      -       -      -
    319C  VAL*     5.5     0.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 68 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  ILE*     2.8    21.2    +      -       -      -
     65A  GLY      4.1     0.2    -      -       -      -
     67A  LEU*     1.3    74.1    -      -       -      +
     69A  ASN*     1.3    58.2    +      -       -      +
     71A  VAL*     3.7     4.1    +      -       -      +
     72A  ALA*     3.1    25.8    +      -       -      +
    321A  PRO*     4.0    24.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 69 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65A  GLY*     2.9    22.0    +      -       -      +
     68A  GLY*     1.3    75.1    -      -       -      +
     70A  SER*     1.3    61.6    +      -       -      +
     71A  VAL      3.3     0.2    -      -       -      -
     72A  ALA*     3.7     4.2    -      -       -      +
     73A  ILE*     2.9    36.3    +      -       -      +
     94A  ALA*     3.8    14.7    -      -       -      +
     97A  ASP*     3.8    21.7    +      -       -      +
     98A  PHE*     4.2    11.7    -      -       +      -
    101A  VAL*     4.8     0.2    -      -       -      +
    317A  SER      2.7    29.7    +      -       -      -
    321A  PRO*     3.8     7.6    -      -       -      +
    324A  TYR*     3.5    30.0    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 70 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66A  PHE*     2.7    34.4    +      -       -      -
     69A  ASN*     1.3    76.4    -      -       -      +
     71A  VAL*     1.3    62.1    +      -       -      +
     73A  ILE*     3.4     6.5    +      -       -      +
     74A  TRP*     3.1    40.0    +      -       -      -
     98A  PHE*     3.2    25.3    -      -       -      -
     60C  LEU*     3.8    21.3    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 71 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67A  LEU*     3.1    18.2    +      -       +      +
     68A  GLY*     3.9     3.6    -      -       -      +
     70A  SER*     1.3    72.6    -      -       -      +
     72A  ALA*     1.3    67.7    +      -       -      +
     74A  TRP*     3.0    11.7    +      -       -      +
     75A  MET*     2.9    30.9    +      -       +      +
    325A  PHE*     5.8     1.3    -      -       +      -
     53C  TYR*     4.0    33.9    -      -       +      +
     56C  ALA*     4.3     6.5    -      -       +      -
     57C  VAL*     3.8    30.1    -      -       +      +
     60C  LEU*     3.5    20.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 72 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68A  GLY      3.1    17.2    +      -       -      +
     69A  ASN*     3.7     5.8    -      -       -      +
     71A  VAL*     1.3    78.8    -      -       -      +
     73A  ILE*     1.3    57.6    +      -       -      +
     75A  MET*     2.9    23.7    +      -       -      +
     76A  PHE*     2.9    26.0    +      -       +      -
     94A  ALA*     4.3     3.1    -      -       +      -
    321A  PRO*     5.5     0.9    -      -       +      -
    324A  TYR*     3.5    37.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 73 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69A  ASN      2.9    25.0    +      -       -      +
     70A  SER*     3.7     5.8    -      -       -      +
     72A  ALA*     1.3    71.7    -      -       -      +
     74A  TRP*     1.3    66.0    +      -       +      +
     76A  PHE*     4.6     5.4    -      -       -      +
     77A  VAL*     3.0    41.4    +      -       +      +
     78A  PHE*     6.3     0.9    -      -       +      -
     91A  PHE*     4.2    12.6    -      -       +      -
     94A  ALA*     3.9    22.7    -      -       +      +
     95A  LEU*     4.3    14.8    -      -       +      +
     98A  PHE*     3.8    36.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 74 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70A  SER*     3.1    46.8    +      -       -      -
     71A  VAL*     3.0    12.8    +      -       -      +
     73A  ILE*     1.3    79.2    -      -       +      +
     75A  MET*     1.3    73.6    +      -       +      +
     78A  PHE*     3.2    57.8    +      +       +      +
     79A  HIS*     3.5     5.2    -      -       +      +
     56C  ALA*     5.0    10.5    -      -       +      -
     60C  LEU*     4.1    24.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 75 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71A  VAL*     2.9    26.7    +      -       +      +
     72A  ALA*     2.9     9.6    +      -       -      +
     74A  TRP*     1.3    90.0    -      -       +      +
     76A  PHE*     1.3    60.0    +      -       +      +
     79A  HIS*     3.1    45.3    +      -       +      +
     80A  MET*     3.3    19.3    +      -       +      +
    325A  PHE*     5.9     4.7    -      -       +      -
     49C  PHE*     5.0     1.3    -      -       -      +
     52C  TYR*     3.3    28.7    -      -       +      +
     53C  TYR*     3.6    30.1    -      -       +      -
     56C  ALA*     4.2     9.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 76 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  ALA*     2.9    29.5    +      -       +      +
     73A  ILE*     4.0     1.6    -      -       -      +
     75A  MET*     1.3    79.3    -      -       +      +
     77A  VAL*     1.3    67.9    +      -       -      +
     78A  PHE      3.0     3.1    +      -       -      -
     80A  MET*     3.3    31.0    +      -       +      -
     81A  LYS      4.3     0.5    +      -       -      -
     83A  TRP*     3.0    31.3    +      -       +      -
     87A  SER*     3.7    38.6    -      -       -      -
     90A  MET*     3.7    31.4    -      -       +      -
     91A  PHE*     3.9    22.2    -      +       +      -
     94A  ALA*     4.7     1.8    -      -       +      -
    324A  TYR*     4.0    36.3    -      +       +      -
    328A  GLY*     6.4     0.4    -      -       -      -
    329A  ASP      6.3     0.2    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 77 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73A  ILE*     3.0    22.5    +      -       +      +
     76A  PHE*     1.3    80.5    -      -       -      +
     78A  PHE*     1.3    94.8    +      -       +      +
     81A  LYS*     3.7    27.1    +      -       -      +
     83A  TRP*     3.7    10.5    -      -       +      -
     91A  PHE*     3.2    37.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 78 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73A  ILE*     6.3     1.3    -      -       +      -
     74A  TRP*     3.2    45.5    +      +       +      +
     76A  PHE      3.1     0.4    -      -       -      -
     77A  VAL*     1.3   106.9    -      -       +      +
     79A  HIS*     1.3    82.1    +      -       +      +
     81A  LYS      5.7     0.2    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 79 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74A  TRP*     3.5    17.4    +      -       -      +
     75A  MET*     3.1    38.0    +      -       +      +
     78A  PHE*     1.3   101.3    +      -       +      +
     80A  MET*     1.3    61.8    +      -       -      +
     81A  LYS      3.7     3.3    -      -       -      +
    331A  PHE*     3.6    35.8    -      -       +      +
     52C  TYR*     3.6    35.4    -      +       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 80 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  MET*     3.6    17.9    -      -       +      +
     76A  PHE*     3.3    27.9    +      -       +      +
     79A  HIS*     1.3    79.3    -      -       -      +
     81A  LYS*     1.3    67.3    +      -       -      +
     82A  PRO*     2.9    19.6    -      -       -      +
     83A  TRP*     3.4    21.5    -      -       +      +
     87A  SER*     4.3    12.3    -      -       -      +
    324A  TYR      5.9     1.8    -      -       -      +
    329A  ASP*     3.7    24.5    -      -       -      +
    330A  THR      4.4     2.5    -      -       -      +
    331A  PHE*     3.6    46.2    -      -       +      +
----------------------------------------------------------
 Back to top of page


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