Contacts of the helix formed by residues 501 - 526 (chain A) in PDB entry 6S1M


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 501 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    500A  GLY*     1.3    82.9    -      -       -      +
    502A  ASP*     1.3    64.6    +      -       -      +
    503A  GLN*     4.4     6.3    -      -       +      +
    504A  THR*     2.5    33.5    +      -       +      +
    505A  ARG*     3.3    24.5    -      -       -      +
     51D  GLN*     3.8    21.5    +      -       -      +
     54D  LEU*     3.9    23.6    +      -       -      +
     55D  ALA*     4.2    14.5    -      -       -      +
     56D  TRP*     5.5     8.6    -      -       +      -
----------------------------------------------------------
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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
----------------------------------------------------------
    359A  PRO*     3.5    23.0    -      -       +      +
    360A  CYS*     4.1    15.0    -      -       -      +
    361A  ALA*     3.9    10.0    +      -       -      +
    501A  ASN*     1.3    75.0    -      -       -      +
    503A  GLN*     1.3    82.2    +      -       -      +
    504A  THR      3.4     0.9    -      -       -      -
    505A  ARG*     3.8    13.3    -      -       -      +
    506A  ARG*     3.0    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 503 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    361A  ALA*     4.1    18.7    -      -       +      +
    501A  ASN*     3.5     4.2    -      -       +      +
    502A  ASP*     1.3    99.3    +      -       -      +
    504A  THR*     1.3    60.0    +      -       +      +
    506A  ARG*     3.3    14.9    +      -       -      +
    507A  ARG*     3.0    26.5    +      -       -      +
     83B  CYS*     5.8     4.6    -      -       -      -
    139B  LEU*     4.1    38.6    -      -       +      +
     56D  TRP*     4.2    29.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 504 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    497A  LEU*     3.3    42.7    +      -       +      +
    500A  GLY      4.1     0.2    -      -       -      -
    501A  ASN*     2.5    42.1    +      -       +      +
    503A  GLN*     1.3    76.9    -      -       +      +
    505A  ARG*     1.3    54.1    +      -       -      -
    507A  ARG*     3.2     8.3    +      -       -      +
    508A  LEU*     3.0    27.0    +      -       -      +
     54D  LEU*     4.3    35.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 505 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    336A  GLN*     3.6    14.2    +      -       -      +
    356A  THR*     6.2     2.5    -      -       -      -
    358A  ARG*     3.4    54.5    -      -       -      +
    359A  PRO*     3.1    33.2    +      -       -      +
    360A  CYS*     4.0    12.1    -      -       +      -
    497A  LEU      3.8    12.3    -      -       -      +
    498A  GLN*     3.1    37.2    +      -       +      +
    499A  ASN      4.9     0.4    -      -       -      -
    500A  GLY      4.3     9.1    +      -       -      +
    501A  ASN*     3.3    31.5    +      -       -      +
    502A  ASP*     3.8    10.9    -      -       -      +
    503A  GLN      3.3     0.2    -      -       -      -
    504A  THR*     1.3    72.4    +      -       -      +
    506A  ARG*     1.3    60.3    +      -       -      +
    508A  LEU*     3.3    10.5    +      -       +      +
    509A  ALA*     2.9    25.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 506 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    360A  CYS*     3.8     8.2    -      -       -      -
    361A  ALA*     3.5    34.5    -      -       +      +
    362A  PRO      3.2    18.8    +      -       -      -
    363A  ILE*     3.9    17.4    -      -       +      +
    364A  LEU      5.6     0.8    -      -       -      +
    502A  ASP      3.0    18.7    +      -       -      +
    503A  GLN*     3.5    16.4    +      -       -      +
    504A  THR      3.3     0.4    -      -       -      -
    505A  ARG*     1.3    76.0    -      -       -      +
    507A  ARG*     1.3    64.0    +      -       -      +
    509A  ALA*     3.3     4.1    +      -       -      +
    510A  VAL*     3.0    45.3    +      -       -      +
    139B  LEU*     4.3    15.8    +      -       -      +
    140B  GLN*     4.1    30.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 507 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    497A  LEU*     4.9    19.4    -      -       +      +
    503A  GLN      3.0    13.3    +      -       -      +
    504A  THR*     3.4    10.8    -      -       -      +
    506A  ARG*     1.3    81.0    -      -       -      +
    508A  LEU*     1.3    63.1    +      -       -      +
    510A  VAL*     3.3     7.0    +      -       -      +
    511A  TYR*     3.1    23.7    +      -       +      +
   1062A  GLN*     3.2    32.9    -      -       -      +
   1064A  SER*     6.2     0.6    -      -       -      -
   1067A  GLU*     4.2    27.7    +      -       -      +
   1068A  ASP*     3.3    14.5    +      -       -      +
   1070A  ILE*     4.3    25.4    -      -       -      +
    102D  TRP*     5.9     0.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 508 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    318A  GLU*     4.7    13.7    -      -       +      +
    335A  ILE*     4.4     8.5    -      -       +      -
    336A  GLN*     3.9    22.7    -      -       -      +
    494A  ILE*     3.8    34.3    -      -       +      +
    497A  LEU*     4.5    22.3    -      -       +      +
    498A  GLN*     4.2    29.6    -      -       +      -
    504A  THR      3.0    12.2    +      -       -      +
    505A  ARG*     3.5     9.6    -      -       -      +
    507A  ARG*     1.3    76.4    -      -       -      +
    509A  ALA*     1.3    56.6    +      -       -      +
    511A  TYR*     3.4    14.2    +      -       +      +
    512A  CYS*     3.0    27.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 509 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    336A  GLN*     3.5    20.6    +      -       -      +
    338A  CYS*     4.3     2.0    -      -       -      -
    354A  ALA*     5.1    10.1    -      -       +      -
    356A  THR*     4.9     9.2    -      -       +      -
    360A  CYS*     4.9     3.1    -      -       -      -
    363A  ILE*     4.0    17.5    -      -       +      -
    368A  VAL*     6.1     1.1    -      -       +      -
    505A  ARG      2.9    16.7    +      -       -      +
    506A  ARG*     3.7     6.7    -      -       -      +
    507A  ARG      3.3     0.2    -      -       -      -
    508A  LEU*     1.3    73.1    -      -       -      +
    510A  VAL*     1.3    61.5    +      -       -      +
    512A  CYS*     3.4     2.5    +      -       -      +
    513A  LEU*     3.0    33.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 510 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    363A  ILE*     3.8    28.9    -      -       +      -
    506A  ARG*     3.0    33.1    +      -       -      +
    507A  ARG*     3.3     7.1    +      -       -      +
    509A  ALA*     1.3    76.3    -      -       -      +
    511A  TYR*     1.3    61.8    +      -       -      +
    513A  LEU*     3.4     7.7    +      -       +      +
    514A  LYS*     3.1    23.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 511 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    318A  GLU*     5.0     9.4    -      -       -      -
    494A  ILE*     5.2    12.8    -      -       +      -
    507A  ARG*     3.1    15.2    +      -       +      +
    508A  LEU*     3.5    19.3    -      -       +      +
    510A  VAL*     1.3    77.9    -      -       -      +
    512A  CYS*     1.3    62.6    +      -       -      +
    514A  LYS*     3.3    10.3    +      -       +      +
    515A  ASP*     3.0    47.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 512 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    316A  ASP*     4.0    21.9    -      -       -      +
    317A  ILE      4.6     0.4    -      -       -      -
    318A  GLU*     3.9    33.9    -      -       +      +
    336A  GLN*     4.1     9.0    -      -       -      +
    338A  CYS*     3.6    28.9    -      -       -      -
    508A  LEU      3.0    16.5    +      -       -      +
    509A  ALA      3.4     4.2    +      -       -      +
    511A  TYR*     1.3    77.1    -      -       -      +
    513A  LEU*     1.3    57.2    +      -       -      +
    515A  ASP*     3.3     7.8    +      -       -      +
    516A  ALA*     2.9    26.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 513 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    338A  CYS*     4.3    14.1    -      -       +      -
    340A  LEU*     3.3    32.0    -      -       +      +
    352A  ARG*     4.1    17.3    -      -       +      +
    353A  LEU      4.4    12.1    -      -       -      +
    354A  ALA*     4.3    16.2    -      -       +      -
    363A  ILE*     4.6    16.6    -      -       +      -
    366A  ALA*     4.5    17.7    -      -       +      -
    509A  ALA      3.0    19.7    +      -       -      +
    510A  VAL*     3.8     6.7    -      -       +      +
    512A  CYS*     1.3    74.4    -      -       -      +
    514A  LYS*     1.3    59.5    +      -       -      +
    516A  ALA*     3.4     4.4    +      -       -      +
    517A  TYR*     3.0    29.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 514 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    510A  VAL*     3.1    15.1    +      -       +      +
    511A  TYR*     3.3    13.4    +      -       +      +
    513A  LEU*     1.3    73.4    -      -       -      +
    515A  ASP*     1.3    67.9    +      -       -      +
    517A  TYR*     3.2    14.6    +      -       +      +
    518A  LEU*     3.2    40.3    +      -       -      +
    521A  ARG*     3.4    32.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 515 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    316A  ASP*     4.0    22.7    -      -       -      +
    318A  GLU*     4.6     5.0    -      -       -      +
    474A  LEU*     4.7    18.8    -      -       +      +
    511A  TYR*     3.0    43.8    +      -       -      +
    512A  CYS*     3.4     9.4    -      -       -      +
    514A  LYS*     1.3    79.9    -      -       -      +
    516A  ALA*     1.3    61.5    +      -       -      +
    517A  TYR      3.3     0.9    +      -       -      -
    518A  LEU*     3.5     7.2    +      -       -      +
    519A  PRO*     3.3    18.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 516 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    314A  SER*     3.7    24.4    -      -       -      +
    315A  PHE*     4.1     7.2    -      -       -      -
    316A  ASP*     3.9    17.4    -      -       +      +
    338A  CYS      3.7    26.9    -      -       -      +
    340A  LEU*     4.4    13.1    -      -       +      +
    512A  CYS      2.9    16.3    +      -       -      +
    513A  LEU*     3.4     6.7    +      -       -      +
    514A  LYS      3.4     0.2    -      -       -      -
    515A  ASP*     1.3    75.4    -      -       -      +
    517A  TYR*     1.3    59.0    +      -       -      +
    519A  PRO*     4.0     5.6    -      -       -      +
    520A  LEU*     4.9     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 517 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    340A  LEU*     4.3    16.2    -      -       +      -
    342A  LEU*     6.0     0.4    -      -       +      -
    349A  PRO*     4.5    26.0    -      -       +      +
    352A  ARG*     5.2    14.6    -      -       -      +
    513A  LEU      3.0    16.8    +      -       -      +
    514A  LYS*     3.2    17.9    +      -       +      +
    515A  ASP      3.2     0.6    -      -       -      -
    516A  ALA*     1.3    78.9    -      -       -      +
    518A  LEU*     1.3    65.6    +      -       -      +
    519A  PRO      3.5     0.4    -      -       -      -
    520A  LEU*     3.3    34.3    +      -       +      +
    521A  ARG*     3.6    37.9    +      -       +      +
    524A  GLU*     4.8     6.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 518 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    474A  LEU*     3.7    36.1    -      -       +      -
    478A  SER*     3.8    20.2    -      -       -      +
    482A  LEU*     3.7    31.0    -      -       +      -
    484A  GLU*     5.5     4.5    -      -       -      +
    514A  LYS*     3.2    33.8    +      -       -      +
    515A  ASP*     4.0     5.6    -      -       -      +
    517A  TYR*     1.3    76.4    -      -       -      +
    519A  PRO*     1.4    67.7    -      -       +      +
    521A  ARG*     3.3    11.2    +      -       -      +
    522A  LEU*     3.1    24.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 519 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    314A  SER*     5.3     4.3    -      -       -      +
    394A  THR*     5.3     3.8    +      -       -      +
    395A  GLY*     3.9    37.2    -      -       -      +
    396A  TYR*     4.1    17.3    -      -       +      +
    459A  MET*     4.3    13.3    -      -       +      +
    474A  LEU*     5.3     4.7    -      -       +      -
    515A  ASP      3.3    16.6    -      -       -      +
    516A  ALA*     4.0     7.4    -      -       -      +
    517A  TYR      3.7     3.4    -      -       -      -
    518A  LEU*     1.4    85.9    -      -       +      +
    520A  LEU*     1.3    59.6    +      -       -      +
    522A  LEU*     3.4    10.6    +      -       +      +
    523A  LEU*     2.9    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 520 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312A  VAL*     4.1    23.6    -      -       +      +
    314A  SER*     3.2    26.3    +      -       -      +
    340A  LEU*     3.9    34.1    -      -       +      +
    341A  GLY*     5.1     0.4    -      -       -      +
    342A  LEU*     3.8    33.9    -      -       +      -
    349A  PRO*     5.5     1.3    -      -       +      -
    394A  THR*     4.7     0.4    -      -       -      +
    516A  ALA      4.9     0.9    -      -       -      +
    517A  TYR*     3.3    27.6    +      -       +      +
    519A  PRO*     1.3    74.9    -      -       -      +
    521A  ARG*     1.3    61.9    +      -       -      +
    523A  LEU*     3.2    13.4    +      -       +      +
    524A  GLU*     3.0    35.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 521 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    482A  LEU*     3.7    30.7    -      -       +      +
    514A  LYS*     3.4    23.9    -      -       -      +
    517A  TYR*     3.6    47.7    +      -       +      +
    518A  LEU*     3.3    13.9    +      -       +      +
    520A  LEU*     1.3    78.4    -      -       -      +
    522A  LEU*     1.3    59.3    +      -       -      +
    524A  GLU*     3.5    14.4    +      -       -      +
    525A  ARG*     2.9    64.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 522 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    396A  TYR*     5.1     5.4    -      -       +      -
    459A  MET*     4.5    14.4    -      -       +      -
    463A  LEU*     5.0     9.6    -      -       +      -
    474A  LEU*     4.9    12.1    -      -       +      -
    477A  VAL*     4.5    25.4    -      -       +      +
    478A  SER*     5.5     1.6    -      -       -      +
    481A  PHE*     4.2    23.8    -      -       +      -
    482A  LEU*     4.7    13.2    -      -       +      -
    518A  LEU*     3.1    23.4    +      -       +      +
    519A  PRO*     3.7    11.4    -      -       +      +
    520A  LEU      3.2     0.2    -      -       -      -
    521A  ARG*     1.3    77.9    -      -       -      +
    523A  LEU*     1.3    60.8    +      -       -      +
    525A  ARG*     4.6     3.4    -      -       +      -
    526A  LEU*     3.1    55.2    +      -       +      +
    528A  VAL*     4.4     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 523 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312A  VAL*     4.3    24.7    -      -       +      -
    344A  TRP*     6.4     1.1    -      -       +      -
    392A  VAL*     6.3     0.2    -      -       +      -
    394A  THR*     4.3    17.5    -      -       +      +
    457A  MET*     5.2     7.4    -      -       +      -
    459A  MET*     4.3    14.3    -      -       +      +
    519A  PRO      2.9    16.3    +      -       -      +
    520A  LEU*     3.2    15.7    +      -       +      +
    522A  LEU*     1.3    79.5    -      -       -      +
    524A  GLU*     1.3    62.9    +      -       +      +
    527A  MET*     3.9     1.0    +      -       -      -
    528A  VAL*     3.5    47.1    +      -       +      -
    529A  LEU*     4.0    31.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 524 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342A  LEU*     5.8     6.2    -      -       -      +
    344A  TRP*     5.9     6.3    -      -       +      +
    346A  GLU      5.8     0.3    -      -       -      +
    347A  PRO*     5.2    11.2    -      -       -      +
    517A  TYR*     4.8     6.1    +      -       -      -
    520A  LEU*     3.0    18.1    +      -       -      +
    521A  ARG*     3.5    21.7    +      -       -      +
    523A  LEU*     1.3    77.5    -      -       +      +
    525A  ARG*     1.3    67.5    +      -       -      +
    526A  LEU      3.7     0.2    +      -       -      -
    527A  MET*     3.9    10.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 525 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    481A  PHE*     5.0     5.2    +      -       -      -
    482A  LEU*     3.4    29.9    -      -       -      +
    521A  ARG*     2.9    52.5    +      -       -      +
    522A  LEU*     4.3     4.0    -      -       +      +
    524A  GLU*     1.3    81.5    -      -       +      +
    526A  LEU*     1.3    61.5    +      -       +      +
    527A  MET*     3.2     4.6    +      -       -      +
    681A  LEU*     4.5    13.2    -      -       +      +
    682A  ARG*     2.3    54.7    +      -       -      +
    685A  VAL*     4.8     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 526 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    459A  MET*     4.7     7.6    -      -       +      -
    463A  LEU*     4.5    21.3    -      -       +      -
    467A  TYR*     3.7    26.9    +      -       +      +
    481A  PHE*     4.1    27.1    -      -       +      -
    522A  LEU*     3.1    42.5    +      -       +      +
    524A  GLU      3.5     0.2    -      -       -      -
    525A  ARG*     1.3    78.6    -      -       +      +
    527A  MET*     1.3    69.8    -      -       -      +
    528A  VAL*     3.5    13.1    +      -       +      +
    531A  ASN*     4.7     2.8    +      -       -      -
    681A  LEU*     5.3     4.0    -      -       +      -
    684A  GLN*     4.9     2.0    -      -       -      +
    685A  VAL*     4.2    24.7    -      -       +      +
----------------------------------------------------------
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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