Contacts of the helix formed by residues 389 - 412 (chain A) in PDB entry 2E4Y


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 LYS 389 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  ARG*     4.4     5.1    -      -       -      +
     68A  ARG*     3.5    17.0    -      -       -      +
    171A  TYR*     3.8     8.1    -      -       +      +
    172A  ALA*     3.4    34.1    -      -       +      -
    174A  THR*     5.6     0.2    -      -       -      -
    301A  ASP*     3.2    23.1    +      -       -      +
    324A  GLU*     2.7    35.5    +      -       -      +
    325A  LEU*     4.1    19.7    -      -       +      -
    387A  GLU*     3.1    15.6    +      -       -      +
    388A  SER*     1.3    74.2    -      -       -      +
    390A  ILE*     1.3    67.7    +      -       -      +
    391A  MET      2.9     3.4    -      -       -      -
    392A  PHE*     2.6    33.5    +      -       +      +
    393A  VAL*     3.2     9.9    +      -       +      +
   1001A  52A      3.8    12.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 390 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67A  GLN*     3.4    27.4    -      -       +      +
     68A  ARG*     3.4    45.5    -      -       +      +
     71A  ALA*     3.8    18.4    -      -       +      -
    330A  VAL*     4.8     1.8    -      -       +      -
    333A  PHE*     4.0    17.5    -      -       +      -
    386A  GLN*     3.5    22.0    -      -       +      +
    387A  GLU*     3.2    23.1    +      -       +      +
    389A  LYS*     1.3    75.5    -      -       -      +
    391A  MET*     1.3    64.2    +      -       -      +
    393A  VAL*     3.1    15.0    +      -       +      +
    394A  VAL*     3.2    17.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 391 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    326A  ALA      3.7     4.0    -      -       -      +
    327A  SER*     3.3    34.3    -      -       -      -
    328A  HIS*     3.3    41.5    -      -       -      +
    329A  PRO*     5.7     0.4    -      -       +      -
    330A  VAL*     4.0    20.1    -      -       +      +
    386A  GLN*     4.7     1.2    +      -       -      -
    388A  SER      4.2     2.1    +      -       -      +
    389A  LYS      2.7     4.2    +      -       -      -
    390A  ILE*     1.3    75.6    -      -       -      +
    392A  PHE*     1.3    86.0    +      -       +      +
    394A  VAL*     3.1     4.7    +      -       -      +
    395A  ASN*     3.0    44.5    +      -       -      +
    441A  THR*     6.2     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 392 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    171A  TYR*     3.2    20.4    -      -       -      +
    190A  THR*     2.9    36.5    +      -       -      +
    191A  VAL*     3.3    15.3    -      -       +      -
    192A  PRO*     5.3     2.0    -      -       +      -
    325A  LEU*     3.6    32.5    -      -       +      -
    326A  ALA      3.7     8.5    -      -       -      -
    327A  SER*     3.5    20.2    -      -       -      -
    388A  SER      4.2     0.9    -      -       -      -
    389A  LYS*     2.6    37.0    +      -       +      +
    391A  MET*     1.3    89.8    -      -       +      +
    393A  VAL*     1.3    65.1    +      -       -      +
    395A  ASN*     3.9     6.1    -      -       -      +
    396A  ALA*     2.9    26.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 393 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45A  PHE*     4.4     7.9    -      -       +      -
     68A  ARG*     3.7    43.3    -      -       +      +
     71A  ALA*     3.9    11.2    -      -       +      -
     72A  MET*     4.0    15.7    -      -       +      +
    146A  ILE*     5.4     0.4    -      -       +      -
    171A  TYR*     3.4    35.4    -      -       +      -
    389A  LYS      3.9     7.2    -      -       -      +
    390A  ILE*     3.1    12.5    +      -       -      +
    392A  PHE*     1.3    77.9    -      -       -      +
    394A  VAL*     1.3    64.2    +      -       -      +
    396A  ALA*     3.0    13.3    +      -       -      +
    397A  VAL*     3.1    17.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 394 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71A  ALA*     4.4    22.9    -      -       +      +
     74A  PHE*     4.5    10.8    -      -       +      -
     75A  ALA*     4.2    11.2    -      -       +      -
    330A  VAL*     4.5    13.2    -      -       +      -
    333A  PHE*     5.6     0.4    -      -       +      -
    390A  ILE*     3.4    18.6    -      -       +      +
    391A  MET*     3.1     7.5    +      -       -      +
    393A  VAL*     1.3    76.2    -      -       -      +
    395A  ASN*     1.3    63.9    +      -       -      +
    397A  VAL*     3.5     1.9    +      -       -      +
    398A  TYR*     3.0    45.7    +      -       +      -
    442A  ALA*     4.3     4.0    -      -       +      -
    444A  PHE*     4.0    20.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 395 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190A  THR*     4.3    11.9    -      -       +      -
    391A  MET*     3.0    33.0    +      -       -      +
    392A  PHE*     4.0     6.8    -      -       -      +
    394A  VAL*     1.3    79.7    -      -       -      +
    396A  ALA*     1.3    57.8    +      -       -      +
    398A  TYR*     3.8     6.0    -      -       -      +
    399A  ALA*     2.8    36.4    +      -       -      +
    439A  GLN*     4.6     1.9    +      -       -      -
    441A  THR*     3.6    23.7    -      -       -      +
    442A  ALA*     4.5     6.0    +      -       -      +
    454A  VAL*     3.2    33.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 396 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146A  ILE*     3.3    20.2    -      -       +      +
    169A  ILE*     3.9    18.8    -      -       +      +
    171A  TYR*     4.1    12.6    -      -       +      -
    190A  THR*     3.6    17.0    -      -       +      +
    392A  PHE      2.9    20.1    +      -       -      +
    393A  VAL      3.1     6.5    -      -       -      +
    395A  ASN*     1.3    78.7    -      -       -      +
    397A  VAL*     1.3    61.6    +      -       -      +
    399A  ALA*     3.3     4.6    -      -       -      +
    400A  MET      3.2    15.4    +      -       -      -
    434A  TYR*     3.9     3.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 397 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  LEU*     4.2    19.2    -      -       +      +
     72A  MET*     4.0    20.0    -      -       +      -
     75A  ALA*     4.1    18.2    -      -       +      -
     76A  ILE*     4.4     9.9    -      -       +      -
     79A  ILE*     4.0    18.4    -      -       +      -
    146A  ILE*     3.6    30.5    -      -       +      -
    393A  VAL*     3.1    14.7    +      -       +      +
    394A  VAL      3.7     5.4    -      -       -      +
    396A  ALA*     1.3    71.7    -      -       -      +
    398A  TYR*     1.3    67.5    +      -       -      +
    399A  ALA      3.1     1.3    -      -       -      -
    400A  MET*     3.0     6.8    +      -       -      +
    401A  ALA*     2.9    19.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 398 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  ALA*     4.1     9.4    -      -       +      -
     78A  GLU*     3.3    28.2    -      -       -      +
     79A  ILE*     3.4    28.3    +      -       +      +
     82A  ASP*     5.1     4.9    +      -       -      +
     85A  LEU*     3.7    24.2    -      -       +      -
    394A  VAL*     3.0    34.3    +      -       +      +
    395A  ASN*     3.8     4.7    -      -       -      +
    397A  VAL*     1.3    74.6    -      -       -      +
    399A  ALA*     1.3    53.6    +      -       -      +
    401A  ALA*     3.0     6.1    +      -       -      +
    402A  HIS*     2.6    48.4    +      -       +      -
    439A  GLN*     3.8    15.5    -      -       -      +
    442A  ALA*     3.7    29.4    -      -       +      -
    443A  PRO*     5.2     5.1    -      -       +      +
    444A  PHE*     3.3    21.6    -      +       -      -
----------------------------------------------------------
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Residues in contact with ALA 399 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190A  THR*     5.2     1.1    -      -       +      -
    395A  ASN      2.8    14.0    +      -       -      +
    396A  ALA*     3.3     9.6    -      -       -      +
    398A  TYR*     1.3    77.0    -      -       -      +
    400A  MET*     1.3    67.2    +      -       -      +
    402A  HIS*     2.9     1.3    +      -       -      +
    403A  ALA*     2.7    23.4    +      -       -      +
    434A  TYR*     3.1    29.7    -      -       +      +
    437A  LYS*     5.0     2.6    -      -       +      +
    439A  GLN*     4.1    13.1    -      -       -      +
    454A  VAL*     4.7     7.6    -      -       +      -
    456A  PHE*     4.0    13.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 400 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  LEU*     3.2    33.2    -      -       +      -
    144A  GLY*     4.1    20.0    -      -       -      +
    146A  ILE*     4.0     7.2    -      -       +      -
    167A  PRO*     4.3    10.3    -      -       +      +
    169A  ILE*     3.1    31.4    -      -       +      -
    396A  ALA      3.2     4.3    +      -       -      +
    397A  VAL*     3.0    10.2    +      -       -      +
    399A  ALA*     1.3    77.7    -      -       -      +
    401A  ALA*     1.3    57.6    +      -       -      +
    403A  ALA*     3.1    14.5    -      -       +      +
    404A  LEU*     2.9    36.7    +      -       +      +
    430A  LEU*     3.9    29.8    -      -       +      -
    434A  TYR*     3.7     8.2    +      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 401 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79A  ILE*     3.5    33.7    -      -       +      -
     85A  LEU*     4.0    14.0    -      -       +      +
     86A  LEU*     4.1     6.1    -      -       +      +
     91A  LEU*     4.4    13.0    -      -       +      +
    397A  VAL      2.9     7.4    +      -       -      +
    398A  TYR*     3.2     7.9    -      -       -      +
    399A  ALA      2.8     0.6    +      -       -      -
    400A  MET*     1.3    73.0    -      -       -      +
    402A  HIS*     1.3    55.5    +      -       -      +
    403A  ALA      3.0     0.7    -      -       -      -
    404A  LEU*     3.0     8.8    +      -       -      +
    405A  HIS*     2.6    36.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 402 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  TYR      6.2     0.2    -      -       -      -
     85A  LEU*     3.8    30.2    -      -       +      +
    398A  TYR*     2.6    34.8    +      -       +      +
    399A  ALA      3.6     2.5    -      -       -      +
    401A  ALA*     1.3    73.2    -      -       -      +
    403A  ALA*     1.3    63.2    +      -       -      +
    405A  HIS*     3.1    14.5    +      +       -      +
    406A  LYS*     2.9    23.4    +      -       -      +
    437A  LYS*     4.0    18.6    +      -       +      +
    439A  GLN*     3.4    51.8    -      -       +      +
    440A  PHE      5.3     0.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 403 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    399A  ALA      2.7     6.0    +      -       -      +
    400A  MET*     3.1    13.0    -      -       +      +
    402A  HIS*     1.3    75.3    -      -       -      +
    404A  LEU*     1.3    64.7    +      -       -      +
    406A  LYS*     3.0    15.6    +      -       -      +
    407A  MET*     3.1    10.4    +      -       -      +
    430A  LEU*     3.9    19.0    -      -       +      +
    433A  GLU*     4.4    10.4    -      -       -      +
    434A  TYR*     3.3    38.4    -      -       +      -
    437A  LYS*     4.5     5.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 404 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  LEU*     3.4    33.0    -      -       +      -
     41A  LEU*     4.7    11.0    -      -       +      -
     86A  LEU*     4.0    11.2    -      -       +      -
     91A  LEU*     4.4    16.4    -      -       +      -
    143A  ALA*     4.1    20.0    -      -       +      -
    400A  MET*     2.9    22.4    +      -       +      +
    401A  ALA*     3.6     5.8    -      -       -      +
    403A  ALA*     1.3    73.4    -      -       -      +
    405A  HIS*     1.3    54.0    +      -       -      +
    407A  MET*     2.8     8.2    +      -       +      +
    408A  GLN*     2.7    34.3    +      -       -      +
    422A  MET*     4.6     3.1    -      -       -      +
    425A  LEU*     4.4    10.5    -      -       +      -
    430A  LEU*     3.4    37.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 405 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  TYR      3.4    20.2    +      -       -      -
     85A  LEU*     3.5    23.6    -      -       +      -
     86A  LEU*     3.1    35.6    +      -       +      +
     87A  PRO*     4.5     7.6    -      -       +      -
    401A  ALA      2.6    17.4    +      -       -      +
    402A  HIS*     3.3    17.3    -      +       -      +
    404A  LEU*     1.3    72.5    -      -       -      +
    406A  LYS*     1.3    66.0    +      -       -      +
    408A  GLN*     3.3     8.2    -      -       +      +
    409A  ARG*     3.2    48.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 406 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    402A  HIS      2.9    12.0    +      -       -      +
    403A  ALA*     3.0     7.4    +      -       -      +
    405A  HIS*     1.3    74.2    -      -       -      +
    407A  MET*     1.3    68.8    +      -       -      +
    408A  GLN      2.8     1.0    +      -       -      -
    409A  ARG*     2.9     6.1    +      -       -      +
    410A  THR*     2.8    35.5    +      -       -      +
    433A  GLU*     3.2    38.0    +      -       +      +
    436A  LEU*     4.1    15.6    +      -       -      +
    437A  LYS*     3.0    37.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 407 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    403A  ALA      3.1     6.7    +      -       -      +
    404A  LEU*     2.8    12.9    +      -       -      +
    406A  LYS*     1.3    74.6    -      -       -      +
    408A  GLN*     1.3    56.8    +      -       -      +
    410A  THR*     4.5     2.7    -      -       -      -
    411A  LEU*     2.8    50.6    +      -       +      +
    422A  MET*     3.4    16.8    -      -       +      +
    425A  LEU*     3.6    31.2    -      -       -      -
    426A  ASP*     4.5     7.0    -      -       +      +
    429A  LYS*     4.2     8.5    -      -       +      -
    430A  LEU*     3.3    49.6    -      -       +      +
    433A  GLU*     3.0    30.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 408 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86A  LEU*     4.2    10.1    -      -       +      -
     87A  PRO*     5.7     3.1    -      -       +      -
     89A  VAL*     4.6     3.7    -      -       +      +
    404A  LEU      2.7    13.4    +      -       -      +
    405A  HIS*     3.3    24.5    -      -       +      +
    406A  LYS      2.8     0.8    +      -       -      -
    407A  MET*     1.3    72.9    -      -       -      +
    409A  ARG*     1.3    65.7    +      -       +      +
    412A  CYS*     2.7    50.2    +      -       -      +
    415A  THR      3.1    27.1    +      -       -      -
    416A  THR*     4.0    13.9    -      -       -      +
    417A  LYS      3.1    23.4    -      -       -      +
    422A  MET*     3.3    25.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 409 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  TYR*     4.9     7.3    +      -       -      +
    405A  HIS*     3.2    35.4    +      -       +      +
    406A  LYS*     2.9     8.9    +      -       -      +
    408A  GLN*     1.3    90.4    -      -       +      +
    410A  THR*     1.3    63.6    +      -       -      +
    412A  CYS      4.5     1.8    -      -       -      +
    413A  PRO*     3.7    20.3    -      -       +      +
    416A  THR*     6.0     4.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 410 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    406A  LYS*     2.8    39.2    +      -       -      +
    407A  MET*     4.1     2.5    -      -       -      -
    409A  ARG*     1.3    76.1    -      -       -      +
    411A  LEU*     1.3    68.9    +      -       +      +
    413A  PRO*     4.1     6.4    -      -       -      +
    433A  GLU*     4.1    10.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 411 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    407A  MET*     2.8    36.2    +      -       +      +
    410A  THR*     1.3    79.5    -      -       +      +
    412A  CYS*     1.3    73.4    +      -       -      +
    413A  PRO*     3.6     6.6    -      -       -      +
    421A  ALA*     3.7    33.1    -      -       +      +
    422A  MET*     3.4    24.7    -      -       +      -
    425A  LEU*     6.5     0.2    -      -       -      -
    433A  GLU*     6.0     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 412 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408A  GLN*     2.7    31.3    +      -       -      +
    409A  ARG*     3.9     2.5    -      -       -      +
    410A  THR      3.3     1.0    -      -       -      -
    411A  LEU*     1.3    88.8    -      -       -      +
    413A  PRO*     1.3    66.1    -      -       -      +
    414A  GLN*     3.3     2.8    +      -       +      -
    415A  THR*     3.2    20.6    +      -       -      +
    417A  LYS      4.7     1.6    -      -       -      +
    419A  CYS*     2.0    53.8    -      -       +      -
    421A  ALA*     3.6    12.3    -      -       -      -
    422A  MET*     4.9     0.2    -      -       -      -
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


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

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  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