Contacts of the helix formed by residues 469 - 492 (chain A) in PDB entry 3Q7I


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 SER 469 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    159A  LEU*     3.7     5.2    -      -       -      -
    162A  TYR*     3.5    10.3    -      -       -      -
    467A  GLU*     3.6    25.7    +      -       -      +
    468A  LEU*     1.3    74.4    -      -       -      +
    470A  PRO*     1.4    78.0    -      -       -      +
    471A  TYR*     3.5     8.6    +      -       -      +
    472A  SER*     3.0    25.7    +      -       -      -
    473A  LEU*     2.9    23.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 470 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    159A  LEU*     3.6    26.7    -      -       +      -
    162A  TYR*     3.7    29.6    -      -       +      -
    280A  ASN*     3.4    50.0    -      -       +      +
    283A  LYS*     4.0     9.0    -      -       +      -
    284A  LEU*     3.3    19.3    -      -       -      +
    469A  SER*     1.4    86.9    -      -       -      +
    471A  TYR*     1.3    62.5    +      -       -      +
    474A  GLY      3.0    18.4    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 471 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  GLN*     2.6    36.6    +      -       -      -
    283A  LYS*     3.3    26.3    +      -       +      +
    286A  ALA*     3.6    15.9    +      -       +      -
    287A  GLY*     3.2    38.4    -      -       -      -
    290A  SER*     3.3    11.2    -      -       -      -
    469A  SER*     3.2     7.5    +      -       -      +
    470A  PRO*     1.3    80.4    -      -       -      +
    472A  SER*     1.3    61.6    +      -       -      +
    474A  GLY      3.2     1.9    +      -       -      -
    475A  ALA*     3.0    18.5    +      -       -      +
    605A  IPA      3.5    27.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 472 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  ILE*     4.4     1.4    -      -       -      +
    465A  LEU*     3.7    14.8    -      -       -      +
    466A  ASP*     4.5     3.8    -      -       -      -
    467A  GLU      2.6    28.2    +      -       -      -
    468A  LEU*     3.5     2.6    -      -       -      -
    469A  SER*     3.0    27.7    +      -       -      -
    471A  TYR*     1.3    76.6    -      -       -      +
    473A  LEU*     1.3    55.2    +      -       -      +
    475A  ALA*     3.4     2.9    +      -       -      +
    476A  LEU*     2.9    28.8    +      -       -      +
    605A  IPA      3.3    27.8    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 473 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154A  MET*     4.5     5.6    -      -       -      -
    155A  VAL*     4.0    23.6    -      -       +      -
    158A  ALA*     3.6    24.7    -      -       +      -
    159A  LEU*     3.8    20.6    -      -       +      -
    284A  LEU*     4.4     2.0    -      -       +      -
    333A  LEU*     4.1    25.6    -      -       +      -
    336A  PHE*     4.6     1.6    -      -       +      -
    468A  LEU*     4.1    14.1    -      -       +      -
    469A  SER      2.9    17.7    +      -       -      +
    470A  PRO      3.8     2.2    -      -       -      +
    472A  SER*     1.3    75.5    +      -       -      +
    474A  GLY*     1.3    65.2    +      -       -      +
    476A  LEU*     3.2    11.4    +      -       +      +
    477A  ILE*     3.0    42.4    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 474 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265A  TRP*     3.7     9.7    -      -       -      -
    284A  LEU*     3.5    32.9    -      -       -      +
    288A  ALA*     3.5    12.1    -      -       -      +
    470A  PRO      3.0    12.1    +      -       -      -
    471A  TYR      3.2     1.3    +      -       -      -
    473A  LEU*     1.3    77.5    -      -       -      +
    475A  ALA*     1.3    60.2    +      -       -      +
    477A  ILE      3.5     0.2    +      -       -      -
    478A  ALA*     3.1    24.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 475 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  ILE*     3.8     6.5    -      -       +      -
    287A  GLY      3.4    21.1    -      -       -      +
    288A  ALA*     4.3     0.4    -      -       -      +
    291A  VAL*     3.5    24.3    -      -       +      +
    471A  TYR      3.0    11.2    +      -       -      +
    472A  SER      3.5     8.3    -      -       -      +
    473A  LEU      3.3     0.2    -      -       -      -
    474A  GLY*     1.3    73.3    -      -       -      +
    476A  LEU*     1.3    62.5    +      -       -      +
    478A  ALA      3.2     1.6    +      -       -      -
    479A  LEU*     3.0    21.4    +      -       -      +
    605A  IPA      3.6    25.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 476 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  ILE*     4.3     1.1    -      -       -      +
    333A  LEU*     4.6     9.0    -      -       +      -
    336A  PHE*     3.8    26.2    -      -       +      -
    395A  ILE*     4.1    31.2    -      -       +      -
    463A  ILE*     4.4    17.7    -      -       +      -
    465A  LEU*     4.2    19.5    -      -       +      -
    468A  LEU*     5.0     0.4    -      -       +      -
    472A  SER      2.9    17.4    +      -       -      +
    473A  LEU*     3.2    14.1    +      -       +      +
    475A  ALA*     1.3    76.3    -      -       -      +
    477A  ILE*     1.3    62.2    +      -       -      +
    479A  LEU*     3.3    20.7    +      -       +      +
    480A  TYR*     3.5    34.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 477 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154A  MET*     3.8    21.5    -      -       +      -
    155A  VAL*     4.2    11.2    -      -       +      -
    264A  LEU*     4.4     4.0    -      -       +      -
    265A  TRP*     3.6    28.9    -      -       +      -
    284A  LEU*     4.7     2.2    -      -       +      -
    336A  PHE*     4.1    16.6    -      -       +      -
    339A  TYR*     3.9    24.5    -      -       +      +
    340A  LEU*     5.0     2.5    -      -       +      -
    473A  LEU*     3.0    38.3    +      -       +      +
    474A  GLY*     4.0     3.6    -      -       -      +
    476A  LEU*     1.3    75.3    -      -       -      +
    478A  ALA*     1.3    59.5    +      -       -      +
    480A  TYR*     3.1     8.3    +      -       -      +
    481A  GLU*     2.9    33.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 478 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92A  ARG*     4.0    11.4    -      -       -      +
    265A  TRP*     4.6     0.4    -      -       -      -
    288A  ALA*     3.9    19.5    -      -       +      +
    291A  VAL*     3.7    21.3    -      -       +      -
    292A  ASP*     4.4     1.3    -      -       -      +
    474A  GLY      3.1    18.8    +      -       -      +
    475A  ALA      3.2     4.2    +      -       -      +
    477A  ILE*     1.3    74.7    -      -       -      +
    479A  LEU*     1.3    65.1    +      -       -      +
    481A  GLU*     3.2    11.9    +      -       -      +
    482A  HIS*     3.0    27.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 479 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  HIS*     5.6     2.5    -      -       +      -
     39A  ILE*     4.4    30.1    -      -       +      -
    291A  VAL*     3.7    24.4    -      -       +      +
    294A  HIS*     5.0     2.9    -      -       +      -
    304A  ILE*     3.8    35.7    -      -       +      -
    305A  PRO*     3.8    20.5    -      -       +      +
    308A  MET*     4.1    15.3    -      -       +      +
    463A  ILE*     4.8     7.9    -      -       +      -
    475A  ALA      3.0    19.3    +      -       -      +
    476A  LEU*     3.5    18.8    -      -       +      +
    477A  ILE      3.2     0.4    -      -       -      -
    478A  ALA*     1.3    76.3    -      -       -      +
    480A  TYR*     1.3    58.5    +      -       +      +
    482A  HIS      3.4     1.0    +      -       -      -
    483A  LYS*     2.9    26.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 480 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    308A  MET*     3.4    24.9    -      -       +      -
    326A  LEU*     3.6    19.1    -      -       +      +
    336A  PHE*     4.2     8.7    -      +       -      -
    340A  LEU*     3.5    40.4    -      -       +      -
    367A  LEU*     6.1     4.3    -      -       +      -
    393A  ASP*     2.7    28.9    +      -       -      -
    395A  ILE*     3.6     2.9    -      -       +      +
    463A  ILE*     3.5    15.7    -      -       +      +
    476A  LEU*     3.5    36.6    -      -       +      -
    477A  ILE      3.1     7.4    +      -       -      +
    479A  LEU*     1.3    78.5    -      -       +      +
    481A  GLU*     1.3    66.1    +      -       -      +
    483A  LYS*     3.5    20.4    -      -       +      +
    484A  ILE*     3.0    34.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 481 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88A  HIS*     3.6     9.0    +      -       -      +
     92A  ARG*     2.8    34.2    +      -       -      +
    261A  ARG      5.8     0.2    -      -       -      +
    262A  TYR*     3.6    41.6    -      -       +      -
    265A  TRP*     2.9    33.6    +      -       -      -
    339A  TYR*     4.2     6.0    +      -       +      +
    340A  LEU*     5.4     1.7    -      -       +      +
    343A  ALA*     5.9     3.8    -      -       +      -
    477A  ILE*     2.9    24.3    +      -       +      +
    478A  ALA*     3.2     7.3    +      -       -      +
    480A  TYR*     1.3    76.4    -      -       -      +
    482A  HIS*     1.3    68.1    +      -       -      +
    484A  ILE*     3.4     7.8    +      -       +      +
    485A  PHE*     3.2    20.8    +      -       -      +
    496A  TYR*     4.8     1.7    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 482 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  MET*     4.6     8.4    -      -       -      -
     73A  PHE*     4.6     1.3    -      +       -      -
     88A  HIS*     4.9     5.3    +      -       -      -
     89A  THR*     3.8    20.0    -      -       +      -
     92A  ARG*     3.9     7.5    +      -       -      -
    291A  VAL*     4.1    11.4    -      -       +      -
    292A  ASP*     2.7    30.9    +      -       -      -
    295A  PHE*     3.4    46.6    -      +       +      -
    305A  PRO*     3.5    21.8    -      -       +      -
    478A  ALA      3.0    18.0    +      -       -      +
    481A  GLU*     1.3    78.4    +      -       +      +
    483A  LYS*     1.3    65.0    +      -       -      +
    485A  PHE*     3.3     8.5    +      -       -      +
    486A  VAL*     2.9    27.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 483 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305A  PRO*     3.8    13.1    -      -       -      +
    308A  MET*     3.7    32.7    -      -       +      +
    309A  ALA*     3.5    17.3    -      -       -      +
    312A  ALA*     3.5    23.8    -      -       -      +
    324A  GLN*     3.0    28.1    +      -       -      +
    344A  ASP*     5.1     4.5    +      -       -      +
    367A  LEU*     5.7     3.2    -      -       -      +
    393A  ASP*     4.5     8.1    +      -       -      -
    479A  LEU      2.9    15.3    +      -       -      +
    480A  TYR*     3.2    29.2    +      -       +      +
    482A  HIS*     1.3    75.3    -      -       -      +
    484A  ILE*     1.3    65.2    +      -       +      +
    486A  VAL      3.2     1.2    +      -       -      -
    487A  GLN*     3.0    36.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 484 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262A  TYR*     3.5    21.1    -      -       -      +
    340A  LEU*     5.0     2.5    -      -       +      +
    343A  ALA*     3.6    16.6    -      -       +      +
    344A  ASP*     3.6    43.3    -      -       +      +
    347A  SER*     3.6    21.8    -      -       -      -
    348A  ASN*     3.1    21.9    +      -       -      +
    480A  TYR*     3.0    27.0    +      -       +      +
    481A  GLU*     3.6     6.5    -      -       -      +
    483A  LYS*     1.3    79.5    -      -       +      +
    485A  PHE*     1.3    64.5    +      -       -      +
    487A  GLN*     3.3     6.5    +      -       -      +
    488A  GLY      3.0    18.0    +      -       -      -
    495A  SER*     3.9     3.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 485 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65A  LEU*     4.9     1.3    -      -       +      -
     68A  LYS*     3.5    28.3    -      -       +      -
     69A  ILE*     4.0    15.9    -      -       +      -
     72A  MET*     3.8    28.9    -      -       +      -
     78A  ILE*     3.9    13.7    -      -       +      -
    295A  PHE*     3.6    36.8    -      +       -      -
    481A  GLU      3.2    12.9    +      -       -      +
    482A  HIS*     3.3     9.4    +      -       -      +
    484A  ILE*     1.3    77.2    -      -       -      +
    486A  VAL*     1.3    62.5    +      -       -      +
    488A  GLY*     3.2     3.1    +      -       -      -
    489A  VAL*     3.0    40.4    +      -       +      +
    495A  SER*     4.6     3.0    +      -       -      -
    496A  TYR*     3.2    35.0    +      +       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 486 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65A  LEU*     3.8    32.3    -      -       +      -
    295A  PHE*     3.6    29.8    -      -       +      -
    305A  PRO      4.4     0.9    -      -       -      +
    306A  VAL*     4.0    23.6    -      -       +      +
    309A  ALA*     3.4    24.5    -      -       +      -
    310A  LEU      5.2     0.2    -      -       -      +
    482A  HIS      2.9    21.0    +      -       -      +
    485A  PHE*     1.3    74.3    -      -       -      +
    487A  GLN*     1.3    65.1    +      -       -      +
    489A  VAL*     3.1     2.8    +      -       -      +
    490A  LEU*     2.9    34.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 487 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309A  ALA*     3.6    15.3    -      -       +      -
    312A  ALA*     3.4    23.4    -      -       -      +
    313A  SER*     2.9    29.5    +      -       -      +
    316A  SER*     5.1     0.2    +      -       -      -
    324A  GLN*     4.9     4.8    +      -       -      +
    344A  ASP*     4.6    12.7    +      -       -      -
    348A  ASN*     3.8    14.4    -      -       -      +
    483A  LYS*     3.0    39.9    +      -       -      +
    484A  ILE*     3.8     7.5    -      -       -      +
    485A  PHE      3.3     0.2    -      -       -      -
    486A  VAL*     1.3    76.0    -      -       -      +
    488A  GLY*     1.3    62.7    +      -       -      +
    490A  LEU*     3.3     5.6    +      -       -      +
    491A  TRP*     3.0    48.1    +      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 488 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348A  ASN*     3.8     3.4    -      -       -      +
    484A  ILE      3.0    10.9    +      -       -      -
    485A  PHE      3.2     1.5    +      -       -      -
    487A  GLN*     1.3    76.5    -      -       -      +
    489A  VAL*     1.3    61.0    -      -       -      +
    491A  TRP      3.3     1.0    +      -       -      -
    492A  ASP      3.0    18.5    +      -       -      -
    493A  ILE*     3.1    32.0    +      -       -      +
    495A  SER*     3.5    22.4    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 489 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63A  SER*     4.8     3.6    -      -       -      +
     64A  SER*     3.6    24.7    +      -       -      +
     65A  LEU*     3.8    33.2    -      -       +      +
     68A  LYS*     3.9    19.1    -      -       +      -
    485A  PHE*     3.0    43.7    +      -       +      +
    486A  VAL      3.6     7.0    -      -       -      +
    488A  GLY*     1.3    75.0    -      -       -      +
    490A  LEU*     1.3    66.5    +      -       +      +
    492A  ASP*     3.0    16.2    +      -       -      +
    493A  ILE      5.2     0.7    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 490 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1A  MET*     4.2    21.3    -      -       +      +
      3A  PHE*     3.6    38.0    +      -       +      +
     60A  ALA*     4.2    14.4    -      -       +      -
     63A  SER*     3.6    33.9    -      -       -      +
     65A  LEU*     4.9     5.8    -      -       +      -
    309A  ALA*     5.1     1.1    -      -       +      -
    310A  LEU*     3.8    31.0    -      -       +      -
    313A  SER*     5.1     6.7    -      -       -      +
    361A  TYR*     5.2     0.7    +      -       -      -
    486A  VAL*     2.9    35.6    +      -       +      +
    487A  GLN*     3.9     5.8    -      -       -      +
    489A  VAL*     1.3    77.6    -      -       -      +
    491A  TRP*     1.3    62.6    +      -       +      +
    492A  ASP*     3.6     1.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 491 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3A  PHE*     4.5    14.9    -      +       +      -
      4A  CYS*     5.6     4.5    -      -       +      +
    313A  SER*     3.5    25.9    +      -       -      -
    316A  SER*     3.9    17.9    -      -       -      -
    317A  CYS*     6.2     1.0    -      -       -      +
    348A  ASN*     4.0     9.6    -      -       +      -
    359A  VAL*     4.7     0.3    -      -       -      +
    361A  TYR*     2.5    50.0    +      +       +      -
    362A  GLN      3.8    11.7    +      -       -      -
    363A  THR*     3.4    31.6    -      -       +      -
    364A  GLY*     3.5    21.1    -      -       -      -
    365A  VAL*     5.0     2.0    -      -       +      -
    487A  GLN*     3.0    48.7    +      -       +      +
    488A  GLY      3.3     3.8    +      -       -      +
    489A  VAL      3.2     0.2    -      -       -      -
    490A  LEU*     1.3    78.4    -      -       +      +
    492A  ASP*     1.3    64.0    +      -       -      +
    493A  ILE*     3.3    27.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 492 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     -1A  ASN      5.8     0.2    +      -       -      -
      0A  ALA*     3.4    32.0    +      -       +      +
      1A  MET      5.5     2.5    -      -       -      +
    353A  ASN*     3.1    23.4    +      -       +      +
    354A  ILE*     2.9    41.7    +      -       -      +
    355A  ALA*     5.4     0.7    +      -       -      +
    361A  TYR*     4.2     6.1    -      -       -      +
    488A  GLY      3.0     4.4    +      -       -      -
    489A  VAL*     3.0    14.2    +      -       -      +
    490A  LEU      3.3     2.4    -      -       -      +
    491A  TRP*     1.3    79.2    -      -       -      +
    493A  ILE*     1.3    59.0    +      -       -      +
----------------------------------------------------------
 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