Contacts of the helix formed by residues 475 - 504 (chain A) in PDB entry 2O8C


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 475 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    471A  LYS      4.1     2.6    +      -       -      -
    472A  PRO      3.6     2.1    -      -       -      +
    474A  PHE*     1.3    89.6    -      -       +      +
    476A  PRO*     1.3    73.2    -      -       -      +
    477A  ASN*     3.4    24.2    +      -       -      +
    478A  LEU*     3.1    35.1    +      -       +      +
    479A  SER*     2.9    29.0    +      -       -      -
    573A  ALA*     5.6     1.2    -      -       -      +
    577A  ILE*     4.3    13.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 476 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    474A  PHE      3.5     9.4    -      -       -      +
    475A  ASP*     1.3    92.2    -      -       -      +
    477A  ASN*     1.3    60.5    +      -       +      +
    479A  SER*     2.8    23.0    +      -       -      +
    480A  GLU*     3.5    14.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 477 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    475A  ASP*     3.1    18.4    +      -       -      +
    476A  PRO*     1.3    82.7    -      -       +      +
    478A  LEU*     1.3    59.6    +      -       -      +
    480A  GLU*     3.6     5.2    +      -       -      +
    481A  LEU*     3.1    32.2    +      -       -      +
    573A  ALA*     4.8    15.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 478 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    470A  VAL*     4.8     5.8    -      -       +      -
    471A  LYS      4.3    13.0    -      -       -      +
    472A  PRO*     4.0     8.1    -      -       +      +
    475A  ASP*     3.1    32.3    +      -       +      +
    477A  ASN*     1.3    78.3    -      -       -      +
    479A  SER*     1.3    60.2    +      -       -      +
    481A  LEU*     3.7     8.4    -      -       +      +
    482A  ARG*     3.0    31.2    +      -       -      +
    570A  TYR*     3.7    42.6    +      -       +      +
    573A  ALA*     3.9    27.4    -      -       +      -
    574A  GLN*     4.6    13.9    -      -       +      +
    577A  ILE*     4.3    15.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 479 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    472A  PRO      3.4    19.7    +      -       -      -
    473A  SER*     4.9     5.4    -      -       -      -
    475A  ASP      2.9     9.3    +      -       -      -
    476A  PRO*     2.8    28.5    +      -       -      +
    478A  LEU*     1.3    77.7    -      -       -      +
    480A  GLU*     1.3    58.9    +      -       -      +
    482A  ARG*     3.4    16.6    +      -       -      +
    483A  GLU*     3.3    22.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 480 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    476A  PRO      3.5    13.5    +      -       -      +
    477A  ASN*     4.1     4.1    -      -       -      +
    478A  LEU      3.3     0.2    -      -       -      -
    479A  SER*     1.3    79.2    +      -       -      +
    481A  LEU*     1.3    64.9    +      -       -      +
    482A  ARG      3.3     0.4    -      -       -      -
    483A  GLU*     3.3    30.3    +      -       -      +
    484A  ILE*     3.4    18.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 481 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    477A  ASN*     3.1    27.4    +      -       -      +
    478A  LEU*     3.9    11.2    -      -       +      +
    479A  SER      3.4     0.2    -      -       -      -
    480A  GLU*     1.3    78.5    -      -       -      +
    482A  ARG*     1.3    61.2    +      -       -      +
    484A  ILE*     3.4    21.0    +      -       +      +
    485A  MET*     3.2    24.1    +      -       +      +
    566A  ASN*     4.1    30.3    -      -       +      +
    569A  GLU*     4.5    16.2    -      -       +      +
    570A  TYR*     3.6    43.5    -      -       +      +
    573A  ALA*     5.8     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 482 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    472A  PRO*     3.8    28.1    +      -       +      +
    478A  LEU      3.0    15.7    +      -       -      +
    479A  SER*     3.4    17.8    +      -       -      +
    481A  LEU*     1.3    74.1    -      -       -      +
    483A  GLU*     1.3    66.6    +      -       -      +
    484A  ILE      3.3     0.2    -      -       -      -
    485A  MET*     3.2    13.1    +      -       +      +
    486A  ASN*     2.8    55.4    +      -       -      +
    570A  TYR*     4.6    12.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 483 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    479A  SER      3.3    18.4    -      -       -      +
    480A  GLU*     3.3    20.6    +      -       -      +
    481A  LEU      3.2     0.4    -      -       -      -
    482A  ARG*     1.3    87.3    +      -       +      +
    484A  ILE*     1.3    56.9    +      -       +      +
    486A  ASN*     3.6     6.7    -      -       -      +
    487A  ASP*     2.6    49.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 484 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    480A  GLU*     3.4    22.9    -      -       +      +
    481A  LEU*     3.6    23.3    -      -       +      +
    482A  ARG      3.3     0.4    -      -       -      -
    483A  GLU*     1.3    75.4    -      -       +      +
    485A  MET*     1.3    62.9    +      -       -      +
    487A  ASP*     4.4     4.4    -      -       -      +
    488A  LEU*     3.1    43.4    +      -       +      +
    566A  ASN*     3.4    24.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 485 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    481A  LEU*     3.2    19.7    -      -       +      +
    482A  ARG*     3.2    14.3    +      -       +      +
    484A  ILE*     1.3    78.9    -      -       -      +
    486A  ASN*     1.3    59.4    +      -       -      +
    489A  GLU*     3.6    16.5    +      -       -      +
    563A  TYR*     3.6    54.9    +      -       +      +
    566A  ASN*     3.7    35.0    -      -       -      +
    567A  LYS*     3.9    22.7    -      -       +      +
    570A  TYR*     5.2     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 486 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    482A  ARG*     2.8    33.8    +      -       -      +
    483A  GLU*     3.2     8.1    +      -       -      +
    485A  MET*     1.3    75.8    -      -       -      +
    487A  ASP*     1.3    66.1    +      -       -      +
    489A  GLU*     3.2    17.3    +      -       -      +
    490A  LYS*     3.2    38.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 487 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    483A  GLU*     2.6    32.9    +      -       -      +
    484A  ILE*     4.4     4.0    -      -       -      +
    486A  ASN*     1.3    73.2    +      -       -      +
    488A  LEU*     1.3    66.6    +      -       +      +
    490A  LYS*     3.3    33.7    +      -       +      +
    491A  LYS*     3.2    29.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 488 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    484A  ILE*     3.1    39.0    +      -       +      +
    485A  MET      4.3     0.7    -      -       -      +
    486A  ASN      3.3     0.2    -      -       -      -
    487A  ASP*     1.3    78.1    -      -       +      +
    489A  GLU*     1.3    56.8    +      -       -      +
    491A  LYS*     3.1    18.6    +      -       +      +
    492A  MET*     2.9    34.8    +      -       +      +
    559A  LEU*     3.8    34.2    -      -       +      +
    562A  GLU*     5.1     9.4    -      -       +      +
    563A  TYR*     3.6    45.3    -      -       +      +
    566A  ASN*     4.6     4.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 489 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    485A  MET      3.6    11.4    +      -       -      +
    486A  ASN*     3.2    14.7    +      -       -      +
    488A  LEU*     1.3    75.1    -      -       -      +
    490A  LYS*     1.3    63.7    +      -       -      +
    492A  MET*     3.4    18.1    +      -       -      +
    493A  GLN*     3.4    23.6    +      -       -      +
    521A  TYR*     5.8     7.2    -      -       +      +
    563A  TYR*     5.2     5.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 490 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    486A  ASN*     3.2    37.6    +      -       -      +
    487A  ASP*     3.4    29.4    +      -       -      +
    488A  LEU      3.2     0.4    -      -       -      -
    489A  GLU*     1.3    77.6    -      -       -      +
    491A  LYS*     1.3    61.3    +      -       +      +
    492A  MET      3.3     0.2    -      -       -      -
    493A  GLN*     3.7    10.9    +      -       -      +
    494A  SER*     3.6    17.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 491 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    487A  ASP*     3.2    17.9    +      -       -      +
    488A  LEU*     3.1    22.7    +      -       +      +
    490A  LYS*     1.3    78.7    -      -       +      +
    492A  MET*     1.3    62.3    +      -       -      +
    494A  SER*     2.7    26.1    +      -       -      +
    495A  THR*     3.2    17.3    +      -       +      +
    559A  LEU*     5.1    12.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 492 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    488A  LEU*     2.9    24.4    +      -       +      +
    489A  GLU*     3.5    15.9    -      -       -      +
    490A  LYS      3.3     0.4    -      -       -      -
    491A  LYS*     1.3    78.8    -      -       -      +
    493A  GLN*     1.3    61.7    +      -       +      +
    495A  THR*     2.6    23.0    +      -       -      +
    496A  LEU*     3.3    14.9    +      -       -      +
    513A  LEU*     3.6    29.3    -      -       +      +
    521A  TYR*     3.8    40.4    -      -       +      -
    523A  PHE*     5.8     0.2    -      -       +      -
    556A  LEU*     3.8    25.8    -      -       +      -
    559A  LEU*     3.8    31.4    -      -       -      +
    560A  ASN*     6.4     1.3    -      -       -      -
    563A  TYR*     6.2     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 493 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    489A  GLU*     3.4    16.8    +      -       -      +
    490A  LYS*     4.0    11.0    -      -       -      +
    491A  LYS      3.3     0.2    -      -       -      -
    492A  MET*     1.3    77.4    -      -       +      +
    494A  SER*     1.3    61.4    +      -       -      +
    495A  THR      3.3     0.2    -      -       -      -
    496A  LEU*     3.4    26.8    +      -       +      +
    497A  ILE*     3.4    25.4    -      -       +      +
    513A  LEU*     5.6     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 494 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    490A  LYS      3.6    10.0    +      -       -      -
    491A  LYS*     2.7    31.2    +      -       -      +
    493A  GLN*     1.3    79.1    -      -       -      +
    495A  THR*     1.3    60.7    +      -       -      +
    496A  LEU      3.2     0.4    -      -       -      -
    497A  ILE*     3.7     7.5    +      -       -      +
    498A  SER*     3.2    25.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 495 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    491A  LYS*     3.2    12.9    +      -       +      +
    492A  MET*     2.6    33.3    +      -       -      +
    494A  SER*     1.3    80.3    +      -       -      +
    496A  LEU*     1.3    59.1    +      -       -      +
    498A  SER*     3.8     7.4    -      -       -      -
    499A  ALA*     3.0    29.3    +      -       -      +
    523A  PHE*     4.3    16.7    -      -       -      -
    553A  ASN*     5.6     6.7    +      -       -      +
    555A  LYS*     4.4    27.1    -      -       +      -
    556A  LEU*     5.6     4.1    -      -       +      +
    559A  LEU*     5.0     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 496 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    492A  MET      3.3    13.1    +      -       -      +
    493A  GLN*     3.4    27.4    -      -       +      +
    494A  SER      3.2     0.4    -      -       -      -
    495A  THR*     1.3    76.9    -      -       -      +
    497A  ILE*     1.3    61.3    +      -       +      +
    499A  ALA*     3.3     4.4    +      -       -      +
    500A  ALA*     2.9    26.9    +      -       -      +
    507A  PRO*     5.2     8.6    -      -       +      +
    508A  GLY*     5.8     4.7    -      -       -      +
    511A  ILE*     4.2    24.3    -      -       +      +
    512A  LYS*     4.3     4.0    -      -       -      +
    513A  LEU*     3.8    35.7    -      -       +      +
    523A  PHE*     3.7    31.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 497 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    493A  GLN*     3.4    18.5    +      -       +      +
    494A  SER*     3.7     6.5    +      -       -      +
    495A  THR      3.5     0.2    -      -       -      -
    496A  LEU*     1.3    75.7    -      -       +      +
    498A  SER*     1.3    64.4    +      -       -      +
    500A  ALA*     3.2    15.9    +      -       +      +
    501A  ARG*     3.4    27.3    +      -       +      +
    507A  PRO*     4.5    23.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 498 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    494A  SER      3.2    20.4    +      -       -      -
    495A  THR*     3.9     8.5    -      -       -      -
    497A  ILE*     1.3    76.9    -      -       -      +
    499A  ALA*     1.3    60.5    +      -       -      +
    501A  ARG*     3.6    16.4    +      -       -      +
    502A  ASP*     3.7    20.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 499 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    495A  THR      3.0    18.9    +      -       -      +
    496A  LEU*     3.6     4.5    -      -       -      +
    498A  SER*     1.3    73.8    -      -       -      +
    500A  ALA*     1.3    62.7    +      -       -      +
    501A  ARG      3.2     2.2    -      -       -      -
    502A  ASP*     4.0     6.9    -      -       -      +
    503A  LEU*     3.3    39.4    +      -       +      +
    511A  ILE*     4.5     4.8    -      -       +      +
    523A  PHE*     4.6    19.3    -      -       +      -
    539A  PHE*     5.1    13.9    -      -       +      -
    551A  PHE*     6.3     0.7    -      -       +      -
    553A  ASN*     5.7     4.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 500 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    496A  LEU      2.9    15.9    +      -       -      +
    497A  ILE*     3.2    15.6    +      -       +      +
    499A  ALA*     1.3    79.0    -      -       -      +
    501A  ARG*     1.3    57.1    -      -       -      +
    504A  GLY*     3.1    24.4    +      -       -      -
    505A  LEU      3.3    27.1    +      -       -      +
    507A  PRO*     4.2    16.6    -      -       +      -
    511A  ILE*     4.8     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 501 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    497A  ILE*     3.4    25.2    +      -       +      +
    498A  SER*     3.8    12.1    -      -       -      +
    499A  ALA      3.2     0.2    -      -       -      -
    500A  ALA*     1.3    77.9    -      -       -      +
    502A  ASP*     1.3    68.6    +      -       -      +
    503A  LEU      3.2     2.4    +      -       -      -
    504A  GLY*     3.8     7.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 502 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    498A  SER*     3.7    18.3    +      -       -      +
    499A  ALA*     3.8     7.4    +      -       -      +
    501A  ARG*     1.3    80.4    -      -       -      +
    503A  LEU*     1.3    68.6    +      -       +      +
    537A  LYS*     5.1    23.7    +      -       +      +
    539A  PHE*     5.5     9.4    -      -       +      -
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Residues in contact with LEU 503 (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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    499A  ALA*     3.3    21.8    +      -       +      +
    501A  ARG      3.2     0.2    -      -       -      -
    502A  ASP*     1.3    86.1    -      -       +      +
    504A  GLY*     1.3    61.2    +      -       -      +
    505A  LEU*     4.5     3.2    -      -       +      +
    511A  ILE*     4.0    23.6    -      -       +      -
    525A  VAL*     5.7     0.2    -      -       +      -
    531A  LYS*     3.8    51.3    -      -       +      +
    532A  VAL*     5.5     5.2    -      -       +      -
    539A  PHE*     4.5    27.1    -      -       +      -
    551A  PHE*     4.3    25.4    -      -       +      -
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Residues in contact with GLY 504 (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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    500A  ALA      3.1    14.0    +      -       -      -
    501A  ARG      3.8     7.1    +      -       -      -
    503A  LEU*     1.3    79.5    -      -       -      +
    505A  LEU*     1.3    69.9    +      -       -      +
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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