Contacts of the helix formed by residues 438 - 459 (chain A) in PDB entry 5E92


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 ASN 438 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    435A  ASN*     3.4    34.6    +      -       -      +
    436A  LEU      5.3     0.2    -      -       -      -
    437A  GLU*     1.4    75.1    +      -       -      +
    439A  VAL*     1.4    62.9    +      -       -      +
    440A  GLU*     3.3     7.8    -      -       +      +
    441A  SER*     3.1    43.2    +      -       -      +
    442A  PHE*     4.4     4.2    +      -       -      -
    444A  GLN*     4.7     1.6    +      -       -      -
    526A  GLU*     4.1    18.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 439 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    374A  PRO*     6.2     2.0    -      -       +      -
    404A  LEU*     3.5    38.2    -      -       +      +
    437A  GLU      3.5     3.9    +      -       -      -
    438A  ASN*     1.4    71.1    -      -       -      +
    440A  GLU*     1.3    62.5    +      -       -      +
    441A  SER      3.4     0.9    +      -       -      -
    442A  PHE*     3.5    10.5    +      -       -      +
    443A  LYS*     3.8    10.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 440 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    438A  ASN*     3.3     9.1    -      -       +      +
    439A  VAL*     1.3    76.7    -      -       -      +
    441A  SER*     1.4    53.1    +      -       -      +
    442A  PHE      3.3     0.2    -      -       -      -
    443A  LYS*     3.0    17.8    +      -       +      +
    444A  GLN*     2.8    53.3    +      -       +      +
    526A  GLU*     5.3     1.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 441 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    428A  GLU*     4.6     1.2    -      -       -      +
    434A  MET*     3.4    17.1    -      -       -      +
    435A  ASN*     3.1    21.3    +      -       -      -
    438A  ASN*     3.1    39.4    +      -       -      +
    439A  VAL      3.2     1.0    -      -       -      -
    440A  GLU*     1.4    77.6    -      -       -      +
    442A  PHE*     1.4    65.0    +      -       -      +
    444A  GLN*     3.4    22.3    +      -       -      +
    445A  THR*     3.5    17.7    +      -       -      +
    525A  PRO*     6.3     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 442 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    376A  VAL*     3.7    28.9    -      -       +      +
    378A  ARG*     4.2    32.1    -      -       +      -
    402A  LEU*     4.2     2.9    -      -       +      -
    404A  LEU*     4.2    15.5    -      -       +      -
    413A  LEU*     3.7    45.8    -      -       +      -
    434A  MET*     3.6    31.0    -      -       +      -
    436A  LEU*     5.7     7.9    -      -       +      -
    438A  ASN      5.2     4.0    -      -       -      -
    439A  VAL*     3.5     8.2    +      -       -      +
    440A  GLU      3.3     0.4    -      -       -      -
    441A  SER*     1.4    81.2    +      -       -      +
    443A  LYS*     1.4    64.3    +      -       -      +
    445A  THR*     2.7    27.9    +      -       -      -
    446A  ASP*     3.5     4.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 443 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    362A  HIS*     2.9    65.7    +      -       +      +
    363A  SER*     5.1     0.4    -      -       -      +
    364A  ASP*     5.0     6.9    -      -       -      +
    374A  PRO*     4.1    19.7    -      -       -      +
    376A  VAL*     3.6    15.0    -      -       +      +
    404A  LEU*     4.1     8.7    -      -       -      -
    439A  VAL*     3.8    16.0    -      -       -      +
    440A  GLU*     3.0    18.5    +      -       +      +
    442A  PHE*     1.4    75.2    -      -       -      +
    444A  GLN*     1.3    62.4    +      -       +      +
    446A  ASP      3.3     2.6    +      -       -      -
    447A  VAL*     3.2    21.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 444 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    438A  ASN*     4.7     1.4    +      -       -      -
    440A  GLU*     2.8    29.0    +      -       +      +
    441A  SER*     3.4    21.1    +      -       -      +
    442A  PHE      3.2     0.4    -      -       -      -
    443A  LYS*     1.3    77.9    -      -       +      +
    445A  THR*     1.4    59.6    +      -       -      +
    447A  VAL*     3.4     7.6    +      -       +      +
    448A  TYR      3.2    13.3    +      -       -      -
    525A  PRO*     3.2    47.5    +      -       +      +
    526A  GLU*     3.2    35.0    +      -       -      +
    528A  ARG*     3.0    23.3    +      -       +      +
    529A  LEU      6.1     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 445 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    378A  ARG*     5.7     5.2    -      -       -      +
    426A  ALA*     4.0    15.4    +      -       -      +
    428A  GLU*     3.4    18.6    -      -       -      +
    429A  VAL*     3.6    27.8    -      -       +      +
    434A  MET*     3.8    14.1    -      -       +      -
    441A  SER      3.5    12.8    -      -       -      +
    442A  PHE*     2.7    24.6    +      -       -      -
    444A  GLN*     1.4    73.9    -      -       -      +
    446A  ASP*     1.3    66.4    +      -       -      +
    448A  TYR*     3.4     4.2    +      -       -      +
    449A  SER*     3.3    24.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 446 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    358A  ILE*     4.6     1.8    -      -       +      +
    361A  LEU*     5.4     0.5    -      -       -      +
    362A  HIS*     2.8    28.1    +      -       +      +
    376A  VAL*     3.5     8.4    -      -       -      +
    377A  HIS*     2.8    26.5    +      -       -      +
    378A  ARG*     3.0    27.7    +      -       -      +
    380A  LEU*     3.4    31.9    +      -       +      +
    442A  PHE      3.5     1.5    +      -       -      -
    443A  LYS      3.3    11.6    +      -       -      +
    445A  THR*     1.3    85.0    +      -       -      +
    447A  VAL*     1.3    51.5    +      -       -      +
    449A  SER*     3.3     3.6    +      -       -      -
    450A  MET*     2.9    31.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 447 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    358A  ILE*     5.3     0.7    -      -       +      -
    362A  HIS*     4.5     9.4    -      -       +      +
    443A  LYS*     3.2    15.1    +      -       +      +
    444A  GLN*     3.7    12.1    -      -       +      +
    445A  THR      3.3     0.6    -      -       -      -
    446A  ASP*     1.3    73.2    -      -       -      +
    448A  TYR*     1.3    64.2    +      -       -      +
    450A  MET*     3.3    12.2    +      -       +      +
    451A  ALA*     3.0    22.2    +      -       -      +
    520A  CYS*     3.7    28.9    -      -       +      +
    528A  ARG*     4.1     6.7    -      -       +      -
    529A  LEU      3.2    28.5    -      -       -      +
    530A  THR*     4.3     2.0    -      -       -      -
    531A  ALA*     3.9    24.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 448 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    423A  ARG      5.2     0.6    +      -       -      -
    424A  TYR      3.7     5.6    -      -       -      -
    425A  MET      3.5    17.0    +      -       -      -
    426A  ALA*     3.4    17.7    -      -       +      -
    427A  PRO*     3.6    24.0    -      -       +      -
    444A  GLN      3.2     6.3    +      -       -      -
    445A  THR      3.7     6.5    -      -       -      +
    446A  ASP      3.3     0.4    -      -       -      -
    447A  VAL*     1.3    75.3    -      -       -      +
    449A  SER*     1.3    65.4    +      -       -      +
    451A  ALA*     3.1    14.2    +      -       -      +
    452A  LEU*     3.3    36.6    +      -       +      +
    474A  PHE*     3.9    13.3    -      -       -      -
    491A  VAL*     3.4    26.3    -      -       -      +
    497A  ARG*     3.7    23.0    -      -       -      -
    520A  CYS      3.4    11.6    +      -       -      +
    521A  TRP*     3.7    25.7    -      -       +      +
    528A  ARG*     3.9    21.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 449 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    380A  LEU*     3.5    31.1    +      -       -      -
    424A  TYR*     2.6    29.2    +      -       -      +
    426A  ALA      5.0     0.2    +      -       -      -
    445A  THR      3.3    11.0    +      -       -      -
    446A  ASP*     3.3     9.6    +      -       -      -
    448A  TYR*     1.3    80.1    -      -       -      +
    450A  MET*     1.3    62.6    +      -       -      +
    452A  LEU*     3.1    18.4    +      -       -      +
    453A  VAL*     3.2    18.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 450 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    354A  LEU*     4.0    13.9    -      -       +      -
    355A  ALA*     4.2    21.5    -      -       -      -
    358A  ILE*     3.6    32.8    -      -       +      -
    380A  LEU*     4.6     3.1    -      -       -      +
    446A  ASP      2.9    17.4    +      -       -      +
    447A  VAL*     3.4    24.0    -      -       +      +
    449A  SER*     1.3    76.3    -      -       -      +
    451A  ALA*     1.4    55.8    +      -       -      +
    453A  VAL*     3.1    10.0    +      -       -      +
    454A  LEU*     2.9    37.6    +      -       +      +
    520A  CYS*     4.3     4.0    -      -       -      -
    531A  ALA*     4.4    14.4    -      -       -      -
    534A  VAL*     3.7    35.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 451 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    447A  VAL      3.0     7.1    +      -       -      +
    448A  TYR      3.1    10.3    +      -       -      +
    450A  MET*     1.4    73.0    -      -       -      +
    452A  LEU*     1.3    60.3    +      -       -      +
    454A  LEU*     3.4     8.3    +      -       -      +
    455A  TRP*     3.0    26.7    +      -       -      +
    517A  LEU*     3.4    37.4    -      -       -      +
    520A  CYS*     3.6    17.9    -      -       +      -
    521A  TRP*     3.8    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 452 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    423A  ARG      3.8     9.0    -      -       -      +
    424A  TYR*     3.7    34.8    -      -       +      +
    448A  TYR*     3.3    41.2    +      -       +      +
    449A  SER*     3.1     7.5    +      -       -      +
    451A  ALA*     1.3    76.0    -      -       -      +
    453A  VAL*     1.4    57.2    +      -       -      +
    455A  TRP*     3.2    10.2    +      -       -      +
    456A  GLU*     3.0    31.8    +      -       -      +
    473A  PRO*     4.0    12.5    -      -       +      +
    474A  PHE*     4.1    11.4    -      -       +      -
    497A  ARG*     5.3     0.2    -      -       -      -
    498A  PRO*     3.8    34.1    -      -       +      -
    521A  TRP*     3.9    10.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 453 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333A  LEU*     3.6    29.2    -      -       +      -
    354A  LEU*     3.6    15.5    -      -       +      -
    380A  LEU*     4.6     1.3    -      -       +      -
    381A  LYS*     3.8    15.5    -      -       -      +
    382A  SER*     3.7    24.7    -      -       -      +
    385A  ILE*     3.6    17.3    -      -       +      -
    424A  TYR*     4.0     2.0    -      -       +      -
    449A  SER      3.2    13.4    +      -       -      +
    450A  MET*     3.1    10.1    +      -       -      +
    452A  LEU*     1.4    76.8    -      -       -      +
    454A  LEU*     1.3    55.7    +      -       -      +
    456A  GLU*     3.1    14.4    +      -       -      +
    457A  MET*     3.0    27.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 454 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    347A  LEU*     4.7     1.6    -      -       +      +
    351A  GLY*     3.7    33.0    -      -       -      +
    354A  LEU*     4.4     8.5    -      -       +      -
    355A  ALA*     6.2     0.7    -      -       +      -
    450A  MET*     2.9    36.7    +      -       +      +
    451A  ALA*     3.7    10.1    -      -       -      +
    452A  LEU      3.4     0.2    -      -       -      -
    453A  VAL*     1.3    71.4    -      -       -      +
    455A  TRP*     1.4    61.3    +      -       -      +
    457A  MET*     3.4    13.6    +      -       +      +
    458A  THR*     2.8    33.7    +      -       -      +
    513A  VAL*     5.2     4.0    -      -       +      +
    516A  THR*     5.6     1.3    -      -       +      -
    517A  LEU*     4.0    21.5    -      -       +      +
    520A  CYS*     5.7     0.7    -      -       -      -
    534A  VAL*     4.2    20.9    -      -       +      -
    538A  PHE*     3.8    17.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 455 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    451A  ALA      3.0    14.0    +      -       -      +
    452A  LEU*     3.2     8.9    +      -       -      +
    454A  LEU*     1.4    75.1    -      -       -      +
    456A  GLU*     1.4    84.6    +      -       +      +
    458A  THR*     3.2     3.5    +      -       -      -
    459A  SER*     2.8    48.3    +      -       -      -
    471A  GLU*     3.7    28.0    -      -       +      -
    472A  PRO      4.8     2.9    -      -       -      -
    473A  PRO*     4.1    13.7    -      -       +      -
    474A  PHE      5.8     0.2    -      -       -      -
    498A  PRO*     3.3    31.2    -      -       +      +
    499A  GLU*     3.0    27.8    +      -       +      -
    500A  ILE*     4.0    17.0    -      -       +      -
    504A  TRP*     3.6    19.6    -      +       -      -
    517A  LEU*     3.9    11.6    -      -       +      +
    521A  TRP*     3.7    14.6    -      +       +      -
----------------------------------------------------------
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Residues in contact with GLU 456 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    337A  LEU*     3.5    19.5    -      -       +      +
    382A  SER*     2.7    23.4    +      -       -      -
    424A  TYR*     2.6    34.7    +      -       -      -
    452A  LEU      3.0    13.1    +      -       -      +
    453A  VAL*     3.1    17.4    +      -       -      +
    455A  TRP*     1.4    87.0    -      -       +      +
    457A  MET*     1.3    60.8    +      -       -      +
    459A  SER*     2.8    20.6    +      -       -      -
    460A  ARG*     3.6     5.5    +      -       -      +
    470A  TYR*     2.5    34.2    +      -       +      -
    473A  PRO*     3.6    18.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 457 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333A  LEU*     3.6    34.5    -      -       +      -
    337A  LEU*     3.7    12.3    -      -       +      +
    342A  ILE*     3.6    16.0    -      -       +      +
    347A  LEU*     3.6    15.9    -      -       +      -
    350A  LEU*     3.7    34.1    -      -       +      +
    351A  GLY*     3.8    24.2    -      -       -      -
    354A  LEU*     3.8    22.0    -      -       +      -
    393A  CYS*     3.9     6.1    -      -       -      -
    453A  VAL*     3.0    15.2    +      -       +      +
    454A  LEU*     3.6    16.4    -      -       -      +
    455A  TRP      3.3     0.2    -      -       -      -
    456A  GLU*     1.3    75.9    -      -       -      +
    458A  THR*     1.4    60.4    +      -       -      +
    460A  ARG*     3.2    11.1    +      -       -      +
    461A  CYS*     3.5     8.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 458 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    347A  LEU*     3.9    13.0    -      -       +      +
    454A  LEU      2.8    18.7    +      -       -      -
    455A  TRP*     3.2     6.7    +      -       -      -
    457A  MET*     1.4    74.1    -      -       -      +
    459A  SER*     1.4    57.6    +      -       -      +
    460A  ARG      3.0     5.5    +      -       -      -
    461A  CYS*     3.0    15.8    +      -       -      +
    464A  VAL*     3.6    10.1    -      -       +      +
    504A  TRP*     3.8    26.2    -      -       +      -
    510A  ILE*     3.9    28.9    -      -       +      -
    513A  VAL*     3.3    23.2    -      -       +      +
    514A  CYS*     4.0     9.0    -      -       -      -
    517A  LEU*     4.2     2.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 459 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    455A  TRP*     2.8    37.0    +      -       -      -
    456A  GLU*     2.8    22.0    +      -       -      -
    458A  THR*     1.4    70.4    -      -       -      +
    460A  ARG*     1.3    66.1    +      -       -      +
    461A  CYS      3.6     0.9    -      -       -      -
    464A  VAL*     5.2     1.9    -      -       -      +
    467A  VAL*     3.6    17.0    -      -       -      +
    468A  LYS*     4.4     6.6    +      -       -      +
    470A  TYR*     4.9     5.7    -      -       -      -
    471A  GLU      5.2     1.2    +      -       -      -
    504A  TRP*     3.5    29.5    -      -       -      -
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il