Contacts of the helix formed by residues 441 - 466 (chain A) in PDB entry 1UN0


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 ASP 441 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    401A  LYS*     3.3    38.0    +      -       -      +
    439A  ILE*     3.2    11.2    +      -       +      +
    440A  ALA*     1.3    78.2    -      -       -      +
    442A  ASN*     1.3    65.1    +      -       -      +
    443A  ARG*     2.7    29.1    +      -       -      +
    444A  ILE*     3.5    15.7    +      -       +      +
    445A  ILE*     3.2    25.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 442 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    440A  ALA      5.7     0.3    -      -       -      -
    441A  ASP*     1.3    72.7    +      -       -      +
    443A  ARG*     1.3    66.5    +      -       -      +
    445A  ILE*     3.9    13.5    -      -       -      +
    446A  GLU*     3.2    25.6    +      -       -      +
    492A  ASN*     3.1    34.4    +      -       -      +
    493A  GLU*     4.4    13.9    +      -       -      +
    494A  ASN*     4.7    16.4    -      -       +      +
    497A  ILE*     3.7    10.4    -      -       +      +
    525A  ALA*     5.1     3.5    -      -       -      +
    526A  GLY*     5.5     5.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 443 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405A  TRP*     3.6    39.6    -      -       +      +
    441A  ASP*     2.7    23.1    +      -       -      +
    442A  ASN*     1.3    75.2    -      -       -      +
    444A  ILE*     1.3    60.2    +      -       +      +
    446A  GLU*     3.5    17.7    +      -       -      +
    447A  VAL*     3.3    27.0    +      -       -      +
     38C  ARG*     5.4     3.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 444 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    401A  LYS*     3.6    35.9    -      -       +      +
    404A  CYS*     3.9     4.7    -      -       +      -
    405A  TRP*     3.3    39.3    -      -       +      +
    436A  LEU*     3.5    31.9    -      -       +      +
    439A  ILE*     4.1    14.8    -      -       +      -
    441A  ASP*     3.4    21.4    +      -       -      +
    443A  ARG*     1.3    76.3    -      -       +      +
    445A  ILE*     1.3    55.8    +      -       -      +
    446A  GLU      3.1     2.2    -      -       -      -
    447A  VAL*     3.2     5.3    +      -       +      +
    448A  THR*     2.8    40.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 445 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    436A  LEU      5.4     0.2    -      -       -      -
    437A  LEU*     3.2    41.8    -      -       +      +
    439A  ILE*     3.5    20.4    -      -       +      +
    440A  ALA*     5.5     0.2    -      -       -      -
    441A  ASP      3.2    16.6    +      -       -      +
    442A  ASN*     3.9    21.1    -      -       -      +
    443A  ARG      3.5     0.2    -      -       -      -
    444A  ILE*     1.3    75.3    -      -       -      +
    446A  GLU*     1.3    58.0    +      -       -      +
    448A  THR*     3.2     7.4    +      -       -      -
    449A  LEU*     2.9    31.4    +      -       +      +
    489A  CYS*     4.1    10.1    -      -       -      -
    492A  ASN*     4.4     5.6    -      -       -      +
    497A  ILE*     3.8    27.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 446 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    442A  ASN      3.2    15.9    +      -       -      +
    443A  ARG*     3.5    18.3    +      -       -      +
    444A  ILE      3.1     0.2    -      -       -      -
    445A  ILE*     1.3    79.3    -      -       -      +
    447A  VAL*     1.3    64.8    +      -       +      +
    449A  LEU*     3.1     8.1    +      -       -      +
    450A  ASP*     3.0    31.1    +      -       -      +
    494A  ASN*     4.8     7.4    +      -       -      +
    496A  LYS*     3.2    33.2    +      -       +      +
    497A  ILE*     3.5    22.4    -      -       +      +
    500A  LYS*     4.0    15.9    -      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    404A  CYS*     4.2    13.5    -      -       -      +
    405A  TRP*     3.2    57.7    -      -       +      +
    408A  SER*     2.8    46.7    +      -       -      +
    409A  ASN*     5.3     0.4    -      -       -      +
    443A  ARG*     3.3    15.0    +      -       -      +
    444A  ILE*     3.2     8.9    +      -       +      +
    446A  GLU*     1.3    78.9    -      -       +      +
    448A  THR*     1.3    58.5    +      -       -      +
    450A  ASP*     3.3     8.8    +      -       -      +
    451A  ALA      3.0    14.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 448 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    404A  CYS*     3.1    21.3    -      -       -      -
    433A  LEU*     3.0    42.1    -      -       +      +
    436A  LEU*     3.5     9.7    -      -       -      +
    437A  LEU*     3.7    19.3    -      -       +      +
    444A  ILE*     2.8    23.8    +      -       -      +
    445A  ILE*     3.4     6.5    -      -       -      -
    447A  VAL*     1.3    72.6    -      -       -      +
    449A  LEU*     1.3    59.3    +      -       -      +
    451A  ALA*     3.4     6.9    +      -       -      +
    452A  LEU*     3.0    28.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 449 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    437A  LEU*     3.4    21.5    -      -       +      -
    445A  ILE*     2.9    23.2    +      -       +      +
    446A  GLU*     3.1     5.8    +      -       -      +
    448A  THR*     1.3    73.2    -      -       -      +
    450A  ASP*     1.3    56.1    +      -       -      +
    452A  LEU*     3.7     4.9    -      -       +      +
    453A  GLU*     2.8    35.5    +      -       -      +
    486A  ILE*     3.8    33.7    -      -       +      -
    489A  CYS*     4.5     4.7    -      -       -      -
    497A  ILE*     3.9    38.1    -      -       +      +
    500A  LYS*     3.8    17.0    -      -       +      -
    501A  ALA*     4.4    12.6    -      -       +      +
    504A  ILE*     3.8    11.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 450 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408A  SER*     4.4     3.8    -      -       -      +
    446A  GLU*     3.0    24.5    +      -       -      +
    447A  VAL*     3.3    12.3    +      -       -      +
    449A  LEU*     1.3    72.7    -      -       -      +
    451A  ALA*     1.3    64.6    +      -       -      +
    453A  GLU*     3.5     8.5    +      -       -      +
    454A  ASN*     3.1    35.9    +      -       -      +
    496A  LYS*     4.4     4.7    +      -       -      -
    500A  LYS*     3.2    30.5    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    407A  ILE*     5.2     0.7    -      -       +      +
    408A  SER*     3.3    32.0    +      -       -      +
    411A  SER*     3.7    14.8    +      -       -      +
    433A  LEU*     4.0    20.6    -      -       +      -
    447A  VAL      3.0     7.3    +      -       -      +
    448A  THR*     3.5    10.3    -      -       -      +
    449A  LEU      3.3     0.2    -      -       -      -
    450A  ASP*     1.3    77.4    -      -       -      +
    452A  LEU*     1.3    63.4    +      -       -      +
    454A  ASN*     3.4     3.5    +      -       -      +
    455A  ILE*     3.1    29.1    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
    430A  ILE*     4.6     4.0    -      -       +      +
    433A  LEU*     4.1    24.5    -      -       +      -
    434A  CYS*     4.2    16.4    -      -       -      -
    437A  LEU*     3.8    29.2    -      -       +      -
    448A  THR*     3.0    30.6    +      -       +      +
    449A  LEU*     3.3     8.0    +      -       -      +
    451A  ALA*     1.3    73.7    -      -       -      +
    453A  GLU*     1.3    60.1    +      -       -      +
    455A  ILE*     3.4    10.9    +      -       +      +
    456A  LEU*     3.0    35.6    +      -       +      +
    477A  ILE*     3.9    24.5    -      -       +      +
    486A  ILE*     4.1    17.9    -      -       +      -
    504A  ILE*     5.1     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 453 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    449A  LEU      2.8    21.4    +      -       -      +
    450A  ASP*     3.8     8.9    -      -       -      +
    452A  LEU*     1.3    71.6    -      -       -      +
    454A  ASN*     1.3    57.1    +      -       -      +
    456A  LEU*     2.8    11.3    +      -       -      +
    457A  LYS*     2.7    61.4    +      -       +      +
    500A  LYS*     3.8    21.8    -      -       -      +
    503A  LYS*     3.0    36.7    +      -       -      +
    504A  ILE*     4.0    18.9    -      -       +      +
    508A  TYR*     4.2    16.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 454 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408A  SER*     4.7     0.8    +      -       -      -
    411A  SER*     3.2    45.8    +      -       -      +
    412A  SER*     3.9     8.3    +      -       -      +
    415A  LEU*     3.7    27.3    -      -       +      +
    421A  ILE*     4.2     3.8    -      -       +      +
    450A  ASP*     3.1    24.8    +      -       -      +
    451A  ALA      3.6     4.5    -      -       -      +
    453A  GLU*     1.3    77.1    -      -       -      +
    455A  ILE*     1.3    60.4    +      -       -      +
    457A  LYS*     3.9    16.8    +      -       -      +
    458A  MET*     3.1    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 455 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    411A  SER*     5.2     2.7    -      -       -      -
    421A  ILE*     4.0    24.9    -      -       +      -
    424A  LEU*     5.6     2.9    -      -       +      -
    425A  VAL*     4.0     9.2    -      -       +      -
    429A  CYS*     4.2    11.2    -      -       -      -
    430A  ILE*     4.1    26.9    -      -       +      -
    433A  LEU*     4.1    20.6    -      -       +      -
    451A  ALA*     3.1    17.2    +      -       +      +
    452A  LEU*     3.6    13.2    -      -       +      +
    454A  ASN*     1.3    77.6    -      -       -      +
    456A  LEU*     1.3    58.5    +      -       -      +
    458A  MET*     3.9     0.5    -      -       -      +
    459A  GLY      3.0    10.4    +      -       -      -
    473A  ASN*     2.7    52.5    +      -       +      +
    477A  ILE*     4.7     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 456 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    452A  LEU*     3.0    22.8    +      -       +      +
    453A  GLU*     2.8     9.2    +      -       -      +
    455A  ILE*     1.3    76.2    -      -       -      +
    457A  LYS*     1.3    53.0    +      -       -      +
    459A  GLY      3.0     1.2    +      -       -      -
    460A  GLU*     2.7    32.6    +      -       -      +
    471A  ASN*     3.2     9.4    +      -       -      +
    473A  ASN*     4.2     1.6    -      -       -      -
    474A  ALA*     3.4    42.8    -      -       +      +
    477A  ILE*     3.8    19.5    -      -       +      -
    486A  ILE*     5.4     0.7    -      -       +      -
    504A  ILE*     3.8    29.8    -      -       +      -
    508A  TYR*     3.8    34.5    -      -       +      -
    509A  PHE*     4.5     5.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 457 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    415A  LEU*     4.3    22.7    -      -       +      +
    453A  GLU*     2.7    53.1    +      -       +      +
    454A  ASN*     3.9    17.6    +      -       -      +
    456A  LEU*     1.3    71.9    -      -       -      +
    458A  MET*     1.3    58.0    +      -       -      +
    460A  GLU*     3.8     2.7    -      -       -      +
    461A  ALA*     3.1    28.4    +      -       -      +
    503A  LYS*     4.3     9.4    -      -       -      +
    508A  TYR*     3.1    23.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 458 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    414A  GLY      4.0    15.3    -      -       -      +
    415A  LEU*     5.2     2.7    -      -       +      -
    418A  PRO*     3.7    20.2    -      -       +      +
    421A  ILE*     3.8    39.9    -      -       +      -
    422A  ARG*     3.6    27.6    -      -       -      +
    454A  ASN      3.1    15.7    +      -       -      +
    455A  ILE      4.0     0.4    -      -       -      +
    457A  LYS*     1.3    77.3    -      -       -      +
    459A  GLY*     1.3    61.5    +      -       -      +
    460A  GLU      3.2     0.2    -      -       -      -
    461A  ALA*     3.9     4.6    -      -       +      +
    462A  ASP*     3.0    49.8    +      -       +      +
    473A  ASN*     4.6     4.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 459 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    455A  ILE      3.0    11.5    +      -       -      -
    456A  LEU      3.0     1.8    +      -       -      -
    458A  MET*     1.3    78.7    -      -       -      +
    460A  GLU*     1.3    59.0    +      -       -      +
    462A  ASP*     3.4     7.3    -      -       -      +
    463A  LYS*     3.3    21.7    +      -       -      +
    471A  ASN*     3.2    24.5    -      -       -      +
    472A  GLU*     4.7     2.8    +      -       -      +
    473A  ASN*     3.5    18.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 460 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    456A  LEU      2.7    14.9    +      -       -      +
    457A  LYS*     4.0     4.7    -      -       -      +
    459A  GLY*     1.3    70.7    -      -       -      +
    461A  ALA*     1.3    60.7    +      -       -      +
    462A  ASP      3.1     1.8    -      -       -      -
    463A  LYS*     3.0    50.6    +      -       -      +
    464A  GLU*     3.0    36.0    +      -       +      +
    471A  ASN*     3.1    23.9    +      -       -      +
    507A  THR*     4.4     8.5    -      -       +      +
    508A  TYR*     3.4    28.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 461 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    457A  LYS      3.1    20.5    +      -       -      +
    458A  MET*     4.2     5.2    -      -       +      +
    460A  GLU*     1.3    74.8    -      -       -      +
    462A  ASP*     1.3    57.1    +      -       -      +
    464A  GLU*     4.0     7.4    -      -       -      +
    465A  ALA*     3.0    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 462 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    422A  ARG*     3.1    33.5    +      -       -      +
    458A  MET*     3.0    29.5    +      -       +      +
    459A  GLY*     3.4    10.5    -      -       -      +
    460A  GLU      3.1     0.4    -      -       -      -
    461A  ALA*     1.3    79.2    -      -       -      +
    463A  LYS*     1.3    59.8    +      -       -      +
    465A  ALA*     3.7     4.4    +      -       -      +
    466A  ARG*     3.3    55.0    +      -       -      +
    472A  GLU*     5.0     1.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 463 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    459A  GLY      3.3     8.6    +      -       -      +
    460A  GLU*     3.0    49.1    +      -       -      +
    462A  ASP*     1.3    78.5    -      -       -      +
    464A  GLU*     1.3    71.4    +      -       -      +
    465A  ALA      3.3     0.9    -      -       -      -
    466A  ARG*     3.6     2.0    -      -       -      +
    467A  GLY*     3.2     7.4    +      -       -      -
    468A  LEU*     2.8    59.3    +      -       +      +
    469A  ASN*     4.2     9.7    +      -       -      +
    470A  ILE*     3.1    44.5    -      -       -      +
    471A  ASN*     3.6    11.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 464 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    460A  GLU*     3.0    45.1    +      -       +      +
    461A  ALA*     4.5     5.6    -      -       -      +
    463A  LYS*     1.3    88.5    +      -       +      +
    465A  ALA*     1.3    62.8    +      -       -      +
    466A  ARG      3.6     0.3    +      -       -      -
    467A  GLY*     3.9     8.6    +      -       -      +
    468A  LEU      4.7     3.1    -      -       -      +
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Residues in contact with ALA 465 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    461A  ALA      3.0    22.9    +      -       -      +
    462A  ASP*     3.9     6.5    -      -       -      +
    463A  LYS      3.3     0.4    -      -       -      -
    464A  GLU*     1.3    79.3    -      -       -      +
    466A  ARG*     1.3    58.5    +      -       +      +
    467A  GLY      3.7     0.6    +      -       -      -
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Residues in contact with ARG 466 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    462A  ASP*     3.3    36.7    +      -       -      +
    463A  LYS*     3.6     2.4    -      -       -      +
    464A  GLU      3.3     0.2    -      -       -      -
    465A  ALA*     1.3    78.8    -      -       +      +
    467A  GLY*     1.3    57.5    +      -       -      +
    468A  LEU*     2.9    36.8    +      -       +      +
    472A  GLU*     3.4    24.2    +      -       -      -
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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
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  Atomic class           I  II  III   IV   V   VI  VII  VIII
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   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
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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