Contacts of the helix formed by residues 459 - 491 (chain A) in PDB entry 1UCU


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 ALA 459 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    458A  TYR*     1.4    91.5    -      -       +      +
    460A  THR*     1.4    59.8    +      -       -      +
    462A  VAL*     3.7     8.0    -      -       -      +
    463A  SER*     2.6    39.1    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 460 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    458A  TYR*     4.0     2.4    -      -       -      -
    459A  ALA*     1.4    79.4    -      -       -      +
    461A  GLU*     1.3    65.6    +      -       +      +
    463A  SER*     3.1     6.1    +      -       -      -
    464A  ASN*     3.0    33.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 461 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    455A  ASP*     6.0     0.9    -      -       -      +
    456A  SER      3.7    11.7    +      -       -      +
    457A  ASP*     3.1    35.6    -      -       +      +
    458A  TYR      3.7     2.8    +      -       -      +
    459A  ALA      3.4     0.2    -      -       -      -
    460A  THR*     1.3    79.7    -      -       +      +
    462A  VAL*     1.3    60.3    +      -       -      +
    464A  ASN*     3.3    17.9    +      -       +      +
    465A  MET*     3.0    23.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 462 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  LEU*     3.5    24.5    -      -       +      -
    457A  ASP*     4.1     7.6    -      -       -      +
    458A  TYR*     2.4    58.6    +      -       -      +
    459A  ALA*     3.3     9.0    -      -       -      +
    461A  GLU*     1.3    66.9    -      -       -      +
    463A  SER*     1.3    60.3    +      -       -      +
    465A  MET      3.2     0.3    +      -       -      -
    466A  SER*     2.4    49.5    +      -       -      -
    469A  GLN*     5.5     0.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 463 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    459A  ALA      2.6    23.0    +      -       -      -
    460A  THR*     3.4     5.6    -      -       -      -
    462A  VAL*     1.3    79.0    -      -       -      +
    464A  ASN*     1.3    56.4    +      -       -      +
    466A  SER*     4.1     5.4    -      -       -      -
    467A  ARG*     2.7    41.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 464 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    460A  THR*     3.0    31.6    +      -       -      +
    461A  GLU*     3.4    25.1    -      -       +      +
    462A  VAL      3.1     0.2    -      -       -      -
    463A  SER*     1.3    78.6    -      -       -      +
    465A  MET*     1.3    64.9    +      -       +      +
    467A  ARG*     2.9    42.2    +      -       -      +
    468A  ALA*     3.1    21.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 465 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27A  ALA*     4.8    19.2    -      -       +      +
     30A  ARG*     4.9    24.9    -      -       +      +
     31A  LEU*     3.8    17.1    -      -       +      +
    457A  ASP*     3.3    26.5    -      -       -      +
    461A  GLU*     3.0     9.4    +      -       +      +
    464A  ASN*     1.3    81.1    -      -       +      +
    466A  SER*     1.3    58.9    -      -       -      +
    468A  ALA*     3.4    12.6    -      -       +      +
    469A  GLN*     2.9    30.4    +      -       -      +
    472A  GLN*     5.8     3.1    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 466 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    462A  VAL*     2.4    43.6    +      -       -      -
    463A  SER*     4.1     4.5    -      -       -      -
    465A  MET*     1.3    65.8    -      -       -      +
    467A  ARG*     1.3    62.5    +      -       -      +
    468A  ALA      3.0     1.3    -      -       -      -
    469A  GLN*     2.9    37.6    +      -       -      +
    470A  ILE*     3.0    20.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 467 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    463A  SER*     2.7    22.8    +      -       -      +
    464A  ASN*     2.9    49.7    +      -       -      +
    466A  SER*     1.3    76.0    -      -       -      +
    468A  ALA*     1.3    57.6    +      -       -      +
    470A  ILE*     3.3     6.5    +      -       -      +
    471A  LEU*     2.6    58.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 468 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    464A  ASN      3.1    20.5    +      -       -      +
    465A  MET*     3.4    20.4    -      -       +      +
    466A  SER      3.0     0.4    -      -       -      -
    467A  ARG*     1.3    83.5    -      -       -      +
    469A  GLN*     1.3    56.1    +      -       -      +
    471A  LEU*     3.8    10.5    -      -       +      -
    472A  GLN*     2.8    55.2    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 469 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24A  LEU*     3.3    13.4    -      -       +      +
     27A  ALA*     4.7    10.8    -      -       +      -
     28A  ILE*     3.9    26.1    -      -       +      +
     31A  LEU*     3.1    36.7    -      -       +      +
    462A  VAL*     5.5     0.8    -      -       -      +
    465A  MET      2.9    17.1    +      -       -      +
    466A  SER*     2.9    31.5    +      -       -      +
    468A  ALA*     1.3    77.5    -      -       -      +
    470A  ILE*     1.3    53.9    +      -       +      +
    472A  GLN*     5.0     1.1    -      -       -      +
    473A  GLN*     2.7    53.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 470 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    466A  SER*     3.0    17.2    +      -       -      +
    467A  ARG*     4.0     7.2    -      -       -      +
    469A  GLN*     1.3    75.6    -      -       +      +
    471A  LEU*     1.3    57.0    +      -       -      +
    473A  GLN*     3.5    19.5    -      -       +      +
    474A  ALA*     2.7    33.7    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 471 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    467A  ARG*     2.6    48.4    +      -       +      +
    468A  ALA*     3.7     8.5    -      -       +      +
    469A  GLN      3.3     0.2    -      -       -      -
    470A  ILE*     1.3    72.7    -      -       -      +
    472A  GLN*     1.3    66.1    +      -       +      +
    474A  ALA*     3.2    11.0    -      -       +      +
    475A  GLY*     3.1    15.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 472 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  LEU*     4.4     4.7    -      -       +      +
     20A  SER*     4.2    18.8    -      -       -      +
     23A  ALA*     4.2    13.5    -      -       -      +
     24A  LEU*     3.4    21.2    -      -       +      +
     27A  ALA*     5.0    12.3    -      -       -      +
    465A  MET*     5.8     3.8    -      -       -      +
    468A  ALA*     2.8    41.5    +      -       +      +
    469A  GLN      4.7     0.4    -      -       -      +
    471A  LEU*     1.3    76.0    -      -       +      +
    473A  GLN*     1.3    54.7    +      -       -      +
    475A  GLY*     2.9     5.9    +      -       -      +
    476A  THR*     2.7    31.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 473 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24A  LEU*     3.9    19.2    -      -       +      +
    469A  GLN*     2.7    46.2    +      -       -      +
    470A  ILE*     3.2    21.2    +      -       +      +
    472A  GLN*     1.3    69.3    -      -       -      +
    474A  ALA*     1.3    56.5    +      -       -      +
    476A  THR*     3.1    14.5    -      -       +      +
    477A  SER*     2.7    34.0    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 474 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    470A  ILE*     2.7    15.9    +      -       +      +
    471A  LEU*     3.2    17.3    -      -       +      +
    473A  GLN*     1.3    75.8    -      -       -      +
    475A  GLY*     1.3    50.7    +      -       -      +
    477A  SER*     3.2     9.1    +      -       -      -
    478A  VAL*     2.7    40.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 475 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  LEU*     3.8    10.6    -      -       -      +
    471A  LEU      3.1     8.9    +      -       -      -
    472A  GLN*     2.9    10.1    +      -       -      -
    474A  ALA*     1.3    78.4    -      -       -      +
    476A  THR*     1.3    56.0    +      -       -      +
    478A  VAL*     3.1    11.0    +      -       -      +
    479A  LEU*     2.9    30.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 476 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  LEU*     3.5    25.4    +      -       -      +
     18A  ASN*     5.2     0.5    +      -       -      -
     21A  GLN*     3.8    23.0    +      -       +      +
     24A  LEU*     4.0    15.3    -      -       +      -
    472A  GLN      2.7    14.3    +      -       -      -
    473A  GLN*     3.1    28.5    +      -       +      +
    475A  GLY*     1.3    69.8    -      -       -      +
    477A  SER*     1.3    58.0    +      -       -      +
    479A  LEU*     3.4     2.6    +      -       -      +
    480A  ALA*     2.7    35.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 477 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    473A  GLN      2.7    17.7    +      -       -      -
    474A  ALA*     3.3    10.3    -      -       -      -
    476A  THR*     1.3    78.0    -      -       -      +
    478A  VAL*     1.3    65.2    +      -       -      +
    480A  ALA*     3.3     7.8    -      -       -      +
    481A  GLN*     3.0    44.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 478 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    474A  ALA*     2.7    28.8    +      -       +      +
    475A  GLY*     3.3    10.8    -      -       -      +
    477A  SER*     1.3    78.1    -      -       -      +
    479A  LEU*     1.3    69.6    +      -       +      +
    481A  GLN*     3.4    12.6    +      -       -      +
    482A  ALA*     2.8    29.7    +      -       +      +
----------------------------------------------------------
 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
----------------------------------------------------------
     13A  THR      4.2     2.9    -      -       -      +
     14A  GLN*     3.4    40.1    -      -       +      +
     17A  LEU*     3.4    41.5    -      -       +      -
    475A  GLY      2.9    17.4    +      -       -      +
    476A  THR*     3.4     4.0    -      -       -      +
    478A  VAL*     1.3    84.4    -      -       +      +
    480A  ALA*     1.3    59.6    +      -       -      +
    482A  ALA*     3.4    23.0    -      -       +      -
    483A  ASN*     3.0    24.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 480 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    476A  THR*     2.7    20.8    +      -       +      +
    477A  SER*     3.0    12.5    +      -       -      +
    479A  LEU*     1.3    72.6    -      -       -      +
    481A  GLN*     1.3    67.3    +      -       +      +
    483A  ASN*     3.2    25.7    -      -       -      +
    484A  GLN*     3.8     9.0    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 481 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    477A  SER*     3.0    35.6    +      -       -      +
    478A  VAL*     3.6    12.1    -      -       -      +
    480A  ALA*     1.3    73.9    -      -       +      +
    482A  ALA*     1.3    57.8    +      -       -      +
    483A  ASN      3.0     9.4    +      -       -      -
    484A  GLN*     3.1    19.2    +      -       -      +
    485A  VAL*     3.3    18.4    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 482 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  GLN*     2.9    21.2    +      -       -      +
    478A  VAL*     2.8    22.2    +      -       +      +
    479A  LEU*     3.4    26.0    -      -       +      -
    480A  ALA      3.3     0.2    -      -       -      -
    481A  GLN*     1.3    75.8    -      -       -      +
    483A  ASN*     1.3    55.2    +      -       -      +
    484A  GLN      3.5     0.4    -      -       -      -
    485A  VAL*     3.9    13.2    -      -       +      -
    486A  PRO*     2.8    20.8    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 483 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  LEU*     5.5     0.3    -      -       -      +
     14A  GLN*     4.1     8.7    -      -       +      -
     15A  ASN*     5.8     2.2    +      -       -      -
     18A  ASN*     6.2     0.2    -      -       -      +
    479A  LEU      3.0    18.0    +      -       -      +
    480A  ALA*     3.2    16.3    -      -       -      +
    481A  GLN      3.0     0.6    -      -       -      -
    482A  ALA*     1.3    79.0    -      -       -      +
    484A  GLN*     1.3    77.6    +      -       -      +
    486A  PRO*     3.4    14.3    -      -       -      +
    487A  GLN*     3.9    24.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 484 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    480A  ALA      4.0    12.1    +      -       -      -
    481A  GLN*     3.1    10.2    +      -       -      +
    483A  ASN*     1.3    90.4    +      -       -      +
    485A  VAL*     1.3    64.1    +      -       +      +
    486A  PRO      3.5     0.6    -      -       -      -
    487A  GLN*     3.8     6.7    +      -       -      +
    488A  ASN*     3.1    34.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 485 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    481A  GLN*     3.3    19.7    -      -       +      +
    482A  ALA*     3.9    10.3    -      -       +      -
    484A  GLN*     1.3    79.4    -      -       +      +
    486A  PRO*     1.3    66.0    -      -       +      +
    488A  ASN*     3.4     4.5    +      -       -      +
    489A  VAL*     3.0    44.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 486 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7A  ASN*     3.4    11.7    -      -       -      +
     11A  LEU*     3.1    40.6    -      -       +      -
     14A  GLN*     3.6     4.7    -      -       -      +
    482A  ALA      2.8    28.9    -      -       -      +
    483A  ASN      3.4    13.7    -      -       -      +
    484A  GLN      3.6     0.2    -      -       -      -
    485A  VAL*     1.3    88.7    -      -       +      +
    487A  GLN*     1.3    61.6    +      -       -      +
    489A  VAL*     2.8     9.2    +      -       +      +
    490A  LEU*     2.7    39.3    +      -       -      +
----------------------------------------------------------
 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
----------------------------------------------------------
     11A  LEU*     4.6    13.5    -      -       +      +
    483A  ASN*     3.9    28.9    +      -       -      +
    484A  GLN*     3.8     8.9    +      -       -      +
    485A  VAL      3.6     0.4    -      -       -      -
    486A  PRO*     1.3    78.4    -      -       -      +
    488A  ASN*     1.3    62.9    +      -       -      +
    490A  LEU*     3.6    14.7    +      -       +      +
    491A  SER*     3.5    18.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 488 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    484A  GLN*     3.1    25.7    +      -       -      +
    485A  VAL*     3.4     7.3    +      -       -      +
    486A  PRO      3.0     0.8    -      -       -      -
    487A  GLN*     1.3    76.3    -      -       -      +
    489A  VAL*     1.3    66.0    +      -       +      +
    490A  LEU      3.1     2.0    -      -       -      -
    491A  SER*     2.9    22.0    +      -       -      -
    492A  LEU*     3.5     5.9    +      -       -      +
----------------------------------------------------------
 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
----------------------------------------------------------
      7A  ASN*     5.4     5.8    -      -       -      +
    485A  VAL*     3.0    39.5    +      -       +      +
    486A  PRO*     2.8    11.1    +      -       +      +
    488A  ASN*     1.3    75.1    -      -       +      +
    490A  LEU*     1.3    63.9    +      -       +      +
    492A  LEU*     2.9    41.8    -      -       +      +
----------------------------------------------------------
 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
----------------------------------------------------------
      3A  VAL*     4.2    13.9    -      -       +      +
      4A  ILE*     4.2    37.7    -      -       +      +
      7A  ASN*     3.4    41.3    -      -       +      +
      8A  SER*     6.2     0.2    -      -       -      -
     11A  LEU*     4.5     9.9    -      -       +      -
    486A  PRO      2.7    23.4    +      -       -      +
    487A  GLN*     3.7    13.0    -      -       +      +
    489A  VAL*     1.3    83.2    -      -       +      +
    491A  SER*     1.3    55.8    +      -       -      +
    492A  LEU*     3.3     1.1    -      -       -      -
    493A  LEU*     2.9    26.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 491 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    487A  GLN      3.5    10.7    +      -       -      -
    488A  ASN*     2.9    15.2    +      -       -      -
    490A  LEU*     1.3    77.5    -      -       -      +
    492A  LEU*     1.3    60.5    +      -       -      +
    493A  LEU*     3.5     9.8    +      -       -      +
    494A  ARG*     5.5     0.9    +      -       -      -
----------------------------------------------------------
 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