Contacts of the helix formed by residues 398 - 424 (chain B) in PDB entry 5YGP


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 GLU 398 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    368B  ASN*     4.0    15.8    -      -       -      +
    396B  LEU*     3.3     5.1    +      -       -      +
    397B  ARG*     1.3   120.9    +      -       -      +
    399B  ALA*     1.3    61.1    +      -       -      +
    400B  GLU*     3.2    29.2    -      -       +      +
    401B  ILE*     3.2    23.4    +      -       +      +
    402B  GLU*     2.9    32.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 399 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    346B  THR*     5.2     3.8    -      -       -      +
    397B  ARG      4.4     0.6    +      -       -      -
    398B  GLU*     1.3    73.9    -      -       -      +
    400B  GLU*     1.3    63.0    +      -       -      +
    402B  GLU*     3.7    14.6    +      -       -      +
    403B  ALA*     2.8    31.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 400 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    339B  ALA      5.4     1.0    -      -       -      +
    342B  TYR*     3.7    38.5    -      -       -      +
    343B  ALA*     3.8    13.4    +      -       +      +
    346B  THR*     3.0    34.8    +      -       -      +
    364B  ALA*     5.3     0.3    -      -       -      +
    365B  ALA*     6.2     0.2    -      -       -      -
    368B  ASN*     2.4    47.7    +      -       +      +
    372B  ALA*     4.8     1.8    -      -       -      +
    398B  GLU*     3.2    17.6    -      -       +      +
    399B  ALA*     1.3    81.8    +      -       -      +
    401B  ILE*     1.3    63.4    +      -       -      +
    403B  ALA*     3.8     1.5    +      -       -      -
    404B  VAL*     3.8    15.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 401 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    368B  ASN*     3.7    46.2    -      -       +      +
    371B  ALA*     4.4     4.9    -      -       +      -
    372B  ALA*     4.2    17.3    -      -       +      -
    375B  LEU*     4.3     7.0    -      -       +      -
    396B  LEU*     3.6    44.6    -      -       +      +
    398B  GLU*     3.2    29.5    +      -       +      +
    399B  ALA      3.2     0.2    -      -       -      -
    400B  GLU*     1.3    75.3    -      -       +      +
    402B  GLU*     1.3    65.2    +      -       -      +
    403B  ALA      3.2     0.4    -      -       -      -
    404B  VAL*     3.2     5.5    +      -       -      +
    405B  GLU*     3.0    29.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 402 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    396B  LEU      4.2    14.7    -      -       -      +
    397B  ARG      4.8     3.8    -      -       -      +
    398B  GLU      2.9    25.3    +      -       -      +
    399B  ALA*     3.2    15.5    +      -       -      +
    401B  ILE*     1.3    75.1    -      -       -      +
    403B  ALA*     1.3    59.9    +      -       -      +
    405B  GLU*     3.2    22.0    +      -       -      +
    406B  VAL*     2.9    37.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 403 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342B  TYR*     3.6    38.4    -      -       +      -
    399B  ALA      2.8    16.9    +      -       -      +
    400B  GLU*     3.9     3.1    -      -       -      +
    401B  ILE      3.2     0.2    -      -       -      -
    402B  GLU*     1.3    76.2    -      -       -      +
    404B  VAL*     1.3    61.0    +      -       -      +
    406B  VAL*     3.3     7.4    +      -       -      +
    407B  GLU*     3.0    30.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 404 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    338B  SER*     4.2     1.1    -      -       -      -
    339B  ALA*     3.6    40.8    -      -       +      +
    342B  TYR*     4.2     9.9    -      -       +      -
    372B  ALA*     3.7    27.8    -      -       +      +
    375B  LEU*     3.8    14.4    -      -       +      -
    376B  TYR*     4.1    13.9    -      -       +      +
    400B  GLU      3.8     4.4    +      -       -      +
    401B  ILE      3.2     8.5    +      -       -      +
    403B  ALA*     1.3    74.9    -      -       -      +
    405B  GLU*     1.3    66.1    +      -       -      +
    407B  GLU*     3.2     6.8    +      -       -      +
    408B  ILE*     3.0    37.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 405 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    375B  LEU*     3.7    16.6    -      -       +      +
    387B  TRP*     2.8    32.4    +      -       -      +
    388B  LYS*     4.1     2.8    +      -       -      +
    391B  VAL*     3.4    49.9    -      -       +      +
    394B  LEU*     4.3     6.4    -      -       -      +
    396B  LEU*     4.3    12.2    -      -       -      +
    401B  ILE*     3.0    27.7    +      -       -      +
    402B  GLU*     3.5    25.0    -      -       -      +
    404B  VAL*     1.3    77.7    -      -       -      +
    406B  VAL*     1.3    57.0    +      -       +      +
    408B  ILE      3.6     0.2    +      -       -      -
    409B  GLY*     3.0    11.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 406 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    388B  LYS*     4.3    17.4    +      -       -      +
    402B  GLU*     2.9    23.5    +      -       +      +
    403B  ALA*     3.7     7.0    -      -       -      +
    405B  GLU*     1.3    76.2    -      -       +      +
    407B  GLU*     1.3    65.7    +      -       -      +
    409B  GLY*     3.1     2.4    +      -       -      -
    410B  ARG*     3.0    56.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 407 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45B  GLU      5.4     1.2    -      -       -      +
     46B  GLU*     5.1     4.9    -      -       -      +
     49B  PRO*     4.5    10.2    -      -       -      +
     67B  ARG*     4.0    13.6    +      -       -      -
    338B  SER*     5.3     5.6    -      -       -      +
    342B  TYR*     2.4    36.5    +      -       +      -
    376B  TYR*     5.2     5.8    -      -       -      +
    403B  ALA      3.0    22.7    +      -       -      +
    404B  VAL*     3.2     6.7    +      -       -      +
    406B  VAL*     1.3    77.7    -      -       -      +
    408B  ILE*     1.3    59.0    +      -       +      +
    410B  ARG*     3.0    36.0    +      -       -      +
    411B  PHE*     2.9    46.1    +      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 408 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    375B  LEU*     3.7    42.8    -      -       +      +
    376B  TYR*     3.9    29.6    -      -       +      +
    379B  MET*     3.7    27.6    -      -       +      -
    387B  TRP*     3.5    28.3    -      -       +      -
    404B  VAL*     3.0    27.3    +      -       +      +
    407B  GLU*     1.3    75.7    -      -       +      +
    409B  GLY*     1.3    58.2    +      -       -      +
    411B  PHE*     3.3     8.3    +      -       +      +
    412B  ARG*     2.9    32.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 409 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    387B  TRP*     3.6    23.3    -      -       -      +
    388B  LYS*     4.5     6.3    -      -       -      -
    405B  GLU      3.0    12.8    +      -       -      -
    406B  VAL      3.1     5.1    +      -       -      -
    408B  ILE*     1.3    78.3    -      -       -      +
    410B  ARG*     1.3    56.9    +      -       -      +
    412B  ARG*     3.5     6.6    +      -       -      +
    413B  ASP*     3.1    33.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 410 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46B  GLU*     3.7    26.5    +      -       -      +
     49B  PRO*     3.3    32.6    -      -       +      +
     50B  GLN*     3.4    47.9    +      -       +      +
    406B  VAL*     3.0    39.2    +      -       +      +
    407B  GLU*     3.0    28.8    +      -       -      +
    409B  GLY*     1.3    74.8    -      -       -      +
    411B  PHE*     1.3    64.9    +      -       -      +
    413B  ASP*     3.4    12.2    +      -       -      +
    414B  GLN*     3.2    18.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 411 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49B  PRO*     3.7    26.2    -      -       +      -
     70B  GLY*     4.0    19.3    -      -       -      -
     71B  TYR*     3.9    31.9    -      +       -      -
     74B  SER*     3.4    26.9    -      -       -      +
     76B  LEU*     4.1    14.5    -      -       +      +
    376B  TYR*     4.8    15.9    -      +       -      -
    379B  MET*     3.9    13.9    -      -       +      -
    407B  GLU*     2.9    30.6    +      -       +      -
    408B  ILE*     3.3    10.7    +      -       -      +
    410B  ARG*     1.3    74.0    -      -       -      +
    412B  ARG*     1.3    64.5    +      -       -      +
    414B  GLN*     3.4     5.2    +      -       -      +
    415B  GLN*     3.2    29.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 412 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    379B  MET*     2.7    38.8    +      -       +      +
    382B  VAL*     3.1    24.9    +      -       -      +
    383B  PRO      3.0    28.3    +      -       -      -
    384B  ALA*     4.1     1.2    -      -       -      +
    385B  ARG      4.6     2.2    -      -       -      +
    387B  TRP*     3.3    41.9    -      -       -      +
    408B  ILE*     2.9    28.7    +      -       +      +
    409B  GLY*     3.6     6.5    -      -       -      +
    410B  ARG      3.3     0.2    -      -       -      -
    411B  PHE*     1.3    77.1    -      -       -      +
    413B  ASP*     1.3    62.2    +      -       -      +
    415B  GLN*     3.3     5.3    +      -       -      +
    416B  TYR*     3.0    35.6    +      -       +      -
    439B  ARG*     3.0    44.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 413 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409B  GLY      3.1    17.3    +      -       -      +
    410B  ARG*     3.7    15.0    -      -       -      +
    411B  PHE      3.3     0.6    -      -       -      -
    412B  ARG*     1.3    79.7    -      -       -      +
    414B  GLN*     1.3    67.8    +      -       -      +
    416B  TYR*     3.1    15.5    +      -       -      +
    417B  GLU*     2.9    31.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 414 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49B  PRO      3.3    20.9    +      -       -      +
     50B  GLN*     3.0    27.7    +      -       -      +
     52B  ALA*     3.5    18.9    +      -       +      -
     53B  ALA*     2.8    35.6    +      -       +      +
     54B  THR*     3.5    16.8    +      -       -      +
     76B  LEU*     3.8    26.0    -      -       +      -
    410B  ARG*     3.2    10.2    +      -       -      +
    411B  PHE      4.0     2.5    -      -       -      +
    412B  ARG      3.4     0.2    -      -       -      -
    413B  ASP*     1.3    86.9    -      -       -      +
    415B  GLN*     1.3    53.0    +      -       -      +
    417B  GLU*     4.0     3.8    -      -       -      +
    418B  MET*     2.7    31.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 415 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73B  GLN      4.6     1.4    +      -       -      -
     74B  SER*     3.0    42.9    +      -       -      +
     76B  LEU*     5.0     1.3    -      -       +      -
    379B  MET*     3.7    17.6    -      -       -      +
    380B  ASP*     4.3     3.0    +      -       -      +
    411B  PHE      3.2    15.7    +      -       -      +
    412B  ARG      3.7     5.6    -      -       -      +
    413B  ASP      3.2     0.2    -      -       -      -
    414B  GLN*     1.3    76.8    -      -       -      +
    416B  TYR*     1.3    56.4    +      -       -      +
    418B  MET*     3.5     0.9    +      -       -      +
    419B  LEU*     2.9    26.7    +      -       -      +
    432B  ALA*     3.4    27.3    -      -       +      +
    435B  ALA*     3.4    28.5    -      -       -      +
    436B  ALA*     3.7     3.8    -      -       +      +
    439B  ARG*     2.5    34.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 416 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    384B  ALA*     3.2    30.2    -      -       +      +
    385B  ARG*     4.0    33.7    -      -       -      +
    412B  ARG*     3.0    26.6    +      -       +      -
    413B  ASP*     3.1    14.6    +      -       -      +
    415B  GLN*     1.3    76.1    -      -       -      +
    417B  GLU*     1.3    60.5    +      -       +      +
    419B  LEU*     3.2     6.9    +      -       +      +
    420B  LYS*     3.0    35.8    +      -       -      +
    436B  ALA*     3.6    15.5    -      -       +      -
    439B  ARG*     2.4    36.6    +      -       -      -
    440B  MET*     3.4    34.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 417 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53B  ALA*     3.6    20.3    -      -       +      +
     54B  THR*     4.0    22.0    -      -       +      +
    413B  ASP*     2.9    21.4    +      -       +      +
    414B  GLN*     3.3    19.0    +      -       -      +
    416B  TYR*     1.3    76.5    -      -       -      +
    418B  MET*     1.3    58.7    +      -       -      +
    420B  LYS*     3.3    24.8    +      -       -      +
    421B  ARG*     3.0    31.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 418 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52B  ALA      5.4     0.2    -      -       -      -
     53B  ALA*     3.6    20.8    -      -       +      +
     75B  GLY      4.4     2.0    -      -       -      +
     76B  LEU*     4.2    17.0    -      -       +      -
    268B  ASN*     4.3     4.9    -      -       -      +
    269B  ALA*     4.3     7.0    -      -       +      -
    270B  ALA*     3.6    33.7    -      -       +      +
    414B  GLN      2.7    21.2    +      -       -      +
    415B  GLN      3.7     5.6    -      -       -      +
    417B  GLU*     1.3    70.4    -      -       -      +
    419B  LEU*     1.3    64.9    +      -       -      +
    421B  ARG*     3.4     4.3    +      -       -      -
    422B  TRP      3.1    17.3    +      -       -      -
    428B  ALA*     3.3    17.4    -      -       +      +
    429B  GLY      3.3    42.8    -      -       -      +
    432B  ALA*     3.9    10.3    -      -       +      -
    433B  VAL*     3.3     9.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 419 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    415B  GLN      2.9    17.4    +      -       -      +
    416B  TYR*     3.2     8.3    +      -       +      +
    418B  MET*     1.3    75.0    -      -       -      +
    420B  LYS*     1.3    60.3    -      -       -      +
    422B  TRP*     3.2     3.7    +      -       +      -
    423B  ARG*     2.9    67.0    +      -       +      +
    433B  VAL*     3.6    30.9    -      -       +      +
    436B  ALA*     4.4     6.3    -      -       +      -
    437B  LEU*     3.7    21.8    -      -       +      -
    440B  MET*     3.3    33.4    -      -       +      -
    447B  GLU*     4.1     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 420 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    416B  TYR*     3.0    18.1    +      -       -      +
    417B  GLU*     3.3    32.9    +      -       -      +
    419B  LEU*     1.3    77.4    -      -       -      +
    421B  ARG*     1.3    62.5    +      -       +      +
    423B  ARG*     3.3     8.4    +      -       -      +
    424B  GLN*     3.1    55.5    +      -       -      +
    426B  GLN*     5.0     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 421 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4B  GLU      5.6     5.9    -      -       -      +
     53B  ALA      3.4    22.7    +      -       -      +
     54B  THR      4.7     3.0    +      -       -      -
     55B  GLY*     4.1    20.2    -      -       -      +
    270B  ALA*     3.0    38.5    +      -       -      +
    272B  PRO*     5.1     4.9    -      -       -      +
    417B  GLU      3.0    19.8    +      -       -      +
    418B  MET*     3.6    10.1    -      -       -      +
    419B  LEU      3.3     0.2    -      -       -      -
    420B  LYS*     1.3    75.6    -      -       +      +
    422B  TRP*     1.3    62.9    +      -       -      +
    424B  GLN      3.1     6.4    +      -       -      -
    426B  GLN*     2.8    66.8    +      -       +      +
    427B  PRO*     3.2    42.0    +      -       -      +
    428B  ALA*     4.2     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 422 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418B  MET      3.1    10.6    +      -       -      +
    419B  LEU*     3.8     4.7    -      -       +      +
    420B  LYS      3.2     0.2    -      -       -      -
    421B  ARG*     1.3    77.3    -      -       -      +
    423B  ARG*     1.3    74.0    +      -       +      +
    424B  GLN      3.3     0.7    +      -       -      -
    425B  GLN*     3.6    12.0    +      -       -      -
    426B  GLN      3.9     9.6    -      -       -      -
    428B  ALA*     3.6    21.8    -      -       +      -
    430B  LEU*     3.5    30.6    -      -       +      +
    433B  VAL*     3.8    22.0    -      -       +      -
    437B  LEU*     5.2     0.4    -      -       +      -
    447B  GLU*     4.5    13.7    -      -       +      -
    451B  SER*     3.1    44.4    -      -       -      -
    454B  GLN*     4.3    25.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 423 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    419B  LEU*     2.9    45.1    +      -       +      +
    420B  LYS*     3.7     9.6    -      -       -      +
    422B  TRP*     1.3    86.3    -      -       +      +
    424B  GLN*     1.3    63.6    -      -       +      +
    425B  GLN*     3.5    10.1    +      -       -      -
    437B  LEU*     3.8     9.9    -      -       -      +
    440B  MET*     4.6     8.1    -      -       -      -
    444B  GLY*     6.1     0.2    -      -       -      -
    447B  GLU*     2.6    44.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 424 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    420B  LYS*     3.1    44.5    +      -       -      +
    421B  ARG      3.4     1.8    -      -       -      +
    422B  TRP      3.1     1.0    -      -       -      -
    423B  ARG*     1.3    85.4    -      -       +      +
    425B  GLN*     1.3    72.1    +      -       -      +
    426B  GLN*     3.2    26.6    +      -       +      +
----------------------------------------------------------
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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