Contacts of the helix formed by residues 396 - 425 (chain A) in PDB entry 2YPT


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 PHE 396 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    359A  CYS*     3.3    54.7    -      -       +      -
    362A  LEU*     3.6    32.1    -      -       +      -
    363A  PHE      4.0     0.7    -      -       -      -
    366A  LEU*     4.4     8.5    -      -       +      -
    391A  ILE*     2.9    42.6    +      -       +      +
    392A  PHE*     3.6    22.2    -      +       -      +
    394A  PHE      3.4     0.2    -      -       -      -
    395A  ILE*     1.3    78.5    -      -       +      +
    397A  SER*     1.4    54.6    +      -       -      +
    398A  PRO*     3.4     2.0    -      -       -      -
    399A  TYR*     2.9    17.8    +      +       +      +
    400A  ASN*     2.8    52.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 397 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23A  VAL*     5.7     1.7    -      -       -      +
     26A  PHE*     3.8    17.3    -      -       -      -
     27A  SER*     5.1     7.1    +      -       -      -
    393A  GLN      2.9    25.5    +      -       -      -
    394A  PHE*     3.0    18.8    +      -       -      +
    395A  ILE      3.3     0.2    -      -       -      -
    396A  PHE*     1.4    73.7    -      -       -      +
    398A  PRO*     1.4    66.5    -      -       -      +
    400A  ASN*     3.3    10.9    +      -       -      +
    401A  GLU*     3.0    28.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 398 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26A  PHE*     3.5    34.1    -      -       +      -
    394A  PHE      4.4     1.8    -      -       -      +
    395A  ILE      3.4    17.3    -      -       -      +
    396A  PHE      3.5     0.4    -      -       -      -
    397A  SER*     1.4    91.1    -      -       -      +
    399A  TYR*     1.4    61.7    +      -       +      +
    401A  GLU*     3.4     2.6    +      -       -      +
    402A  VAL*     3.2    29.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 399 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    355A  ASN*     2.8    38.0    +      -       -      -
    358A  LEU*     3.6    32.4    -      -       +      +
    359A  CYS*     3.7    17.9    -      -       -      -
    362A  LEU*     6.2     3.6    -      -       +      -
    396A  PHE*     2.9    19.5    +      +       +      +
    398A  PRO*     1.4    76.7    -      -       +      +
    400A  ASN*     1.3    75.8    -      -       -      +
    402A  VAL*     3.2     7.4    +      -       +      +
    403A  LEU*     2.9    57.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 400 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    355A  ASN*     5.1     0.7    -      -       -      +
    359A  CYS*     4.7     5.2    -      -       -      -
    392A  PHE      3.0    27.5    +      -       -      +
    393A  GLN*     4.8     3.0    +      -       -      +
    396A  PHE*     2.8    31.5    +      -       -      +
    397A  SER*     3.6     9.3    -      -       -      +
    399A  TYR*     1.3    90.8    -      -       -      +
    401A  GLU*     1.4    53.5    +      -       +      +
    403A  LEU*     4.0     7.3    -      -       -      +
    404A  SER*     2.8    37.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 401 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26A  PHE*     4.3    15.9    -      -       +      -
     30A  VAL*     3.8    27.8    -      -       +      +
     34A  GLU*     4.0    10.2    -      -       -      +
    397A  SER*     3.0    19.5    +      -       -      +
    398A  PRO      3.7     5.2    -      -       -      +
    400A  ASN*     1.4    74.0    -      -       +      +
    402A  VAL*     1.4    63.3    +      -       +      +
    404A  SER*     3.7     7.9    +      -       -      -
    405A  PHE*     3.2    22.2    +      -       -      +
    455A  TRP*     3.7    30.5    +      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 402 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26A  PHE*     6.5     0.2    -      -       +      -
    398A  PRO      3.2    18.3    +      -       -      +
    399A  TYR*     3.2     8.0    +      -       +      +
    401A  GLU*     1.4    73.8    -      -       +      +
    403A  LEU*     1.4    59.5    -      -       -      +
    405A  PHE*     3.1     8.9    +      -       +      +
    406A  CYS*     2.9    46.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 403 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    351A  ILE*     5.3     7.2    -      -       +      -
    355A  ASN*     3.4    35.4    -      -       +      +
    399A  TYR*     2.9    47.4    +      -       +      +
    400A  ASN*     4.0     7.0    -      -       -      +
    402A  VAL*     1.4    77.1    -      -       -      +
    404A  SER*     1.4    56.4    +      -       -      +
    406A  CYS*     3.3     8.7    +      -       +      +
    407A  LEU*     2.9    52.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 404 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    400A  ASN*     2.8    23.2    +      -       -      +
    401A  GLU*     3.8    11.0    -      -       -      -
    402A  VAL      3.3     0.2    -      -       -      -
    403A  LEU*     1.4    74.0    -      -       -      +
    405A  PHE*     1.4    55.9    -      -       -      +
    407A  LEU*     3.5     8.4    +      -       -      +
    408A  THR*     2.7    37.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 405 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    401A  GLU      3.2    13.1    +      -       -      +
    402A  VAL*     3.1    12.4    +      -       +      +
    404A  SER*     1.4    71.7    -      -       -      +
    406A  CYS*     1.3    67.4    +      -       -      +
    408A  THR*     3.3     7.4    +      -       -      -
    409A  VAL*     3.1    47.3    +      -       +      +
    454A  MET*     3.3    45.3    -      -       +      -
    455A  TRP*     3.5    52.0    -      +       +      +
----------------------------------------------------------
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Residues in contact with CYS 406 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    402A  VAL*     2.9    32.2    +      -       -      +
    403A  LEU*     3.6    11.7    -      -       +      +
    405A  PHE*     1.3    84.5    -      -       -      +
    407A  LEU*     1.3    57.0    +      -       +      +
    409A  VAL*     3.4     9.5    +      -       -      +
    410A  LEU*     3.0    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 407 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348A  ASN*     4.8    10.8    -      -       -      +
    351A  ILE*     3.8    39.5    -      -       +      -
    403A  LEU*     2.9    49.4    +      -       +      +
    404A  SER*     3.9     7.4    -      -       -      +
    405A  PHE      3.3     0.2    -      -       -      -
    406A  CYS*     1.3    73.1    -      -       +      +
    408A  THR*     1.4    59.4    +      -       -      +
    410A  LEU*     3.7    10.0    -      -       +      +
    411A  SER*     2.9    27.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 408 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    404A  SER*     2.7    22.9    +      -       -      -
    405A  PHE*     3.3     9.7    +      -       -      -
    407A  LEU*     1.4    72.4    -      -       -      +
    409A  VAL*     1.4    63.3    +      -       -      +
    411A  SER*     3.4     7.7    +      -       -      -
    412A  ARG*     3.2    34.1    +      -       -      +
    454A  MET      4.5     0.9    -      -       -      +
    455A  TRP      3.9    13.5    +      -       -      +
    456A  HIS      3.5    17.9    +      -       -      +
    457A  TYR      3.4    23.6    -      -       -      +
    458A  SER*     4.0     6.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 409 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405A  PHE*     3.1    43.5    +      -       +      +
    406A  CYS*     3.6    10.5    -      -       -      +
    408A  THR*     1.4    75.3    -      -       -      +
    410A  LEU*     1.4    60.7    +      -       -      +
    412A  ARG*     3.4    32.4    +      -       -      +
    413A  ARG*     3.3    20.2    +      -       +      +
    454A  MET*     4.6     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 410 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348A  ASN*     6.0     1.6    -      -       -      +
    351A  ILE*     5.9     6.1    -      -       +      -
    406A  CYS      3.0    17.9    +      -       -      +
    407A  LEU*     3.7    14.8    -      -       +      +
    409A  VAL*     1.4    74.8    -      -       -      +
    411A  SER*     1.4    53.3    +      -       -      +
    413A  ARG*     3.2     9.5    +      -       -      +
    414A  PHE*     2.8    35.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 411 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    407A  LEU      2.9    18.3    +      -       -      -
    408A  THR*     3.5     8.5    -      -       -      -
    409A  VAL      3.4     0.2    -      -       -      -
    410A  LEU*     1.4    76.0    -      -       -      +
    412A  ARG*     1.4    54.9    +      -       -      +
    414A  PHE*     3.4     8.6    +      -       -      +
    415A  GLU*     3.0    32.9    +      -       -      +
    458A  SER*     2.8    33.5    +      -       -      -
    459A  HIS*     4.9     3.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 412 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408A  THR*     3.2    17.4    +      -       -      +
    409A  VAL*     3.5    33.2    -      -       -      +
    410A  LEU      3.3     0.2    -      -       -      -
    411A  SER*     1.4    74.6    -      -       -      +
    413A  ARG*     1.4    58.7    +      -       -      +
    415A  GLU*     3.3     3.8    +      -       -      +
    416A  PHE*     3.1    36.2    +      -       +      -
    453A  SER      3.0    14.3    +      -       -      -
    454A  MET*     2.8    49.2    +      -       -      +
    457A  TYR*     2.7    35.8    +      -       -      +
    458A  SER      3.2    18.1    +      -       -      +
    459A  HIS      4.4     0.4    -      -       -      -
    460A  PRO*     3.9    33.3    -      -       +      +
    461A  PRO*     5.4     2.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 413 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409A  VAL*     3.3    10.5    +      -       +      +
    410A  LEU*     3.2    10.9    +      -       -      +
    412A  ARG*     1.4    78.5    -      -       -      +
    414A  PHE*     1.4    56.1    +      -       -      +
    416A  PHE*     3.5    10.8    +      -       -      +
    417A  GLN*     3.2    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 414 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    339A  HIS*     3.4    12.3    -      -       +      -
    344A  HIS*     3.1    51.9    -      -       +      -
    348A  ASN*     6.1     1.8    -      -       -      +
    410A  LEU      2.8    17.1    +      -       -      +
    411A  SER*     3.6    10.1    -      -       -      +
    413A  ARG*     1.4    75.6    -      -       -      +
    415A  GLU*     1.3    58.1    +      -       -      +
    418A  ALA      3.2    11.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 415 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    335A  HIS*     3.0    25.8    +      -       -      -
    339A  HIS*     2.8    30.8    +      -       -      -
    411A  SER*     3.0    22.2    +      -       -      +
    412A  ARG      3.6     6.3    -      -       -      +
    413A  ARG      3.3     0.2    -      -       -      -
    414A  PHE*     1.3    74.7    -      -       -      +
    416A  PHE*     1.4    59.3    +      -       -      +
    418A  ALA*     3.3     4.0    +      -       -      +
    419A  ASP*     3.0    36.5    +      -       -      +
    458A  SER      4.5     1.1    -      -       -      +
    459A  HIS*     3.2    45.2    +      -       +      +
    460A  PRO*     3.8    15.7    -      -       +      -
    465A  ARG*     3.7     6.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 416 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    412A  ARG*     3.1    26.7    +      -       +      -
    413A  ARG*     3.7    11.2    -      -       -      +
    414A  PHE      3.5     0.2    -      -       -      -
    415A  GLU*     1.4    74.1    -      -       -      +
    417A  GLN*     1.4    57.2    +      -       -      +
    419A  ASP*     3.4     8.8    +      -       +      +
    420A  ALA*     3.0    28.9    +      -       -      +
    460A  PRO*     3.5    30.7    -      -       +      -
    464A  GLU*     3.7    37.5    -      -       +      -
    465A  ARG*     4.1     9.2    -      -       +      -
    468A  ALA*     4.1    19.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 417 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342A  LEU*     3.4    21.4    -      -       +      +
    344A  HIS*     3.6    24.9    -      -       +      +
    413A  ARG      3.2    17.1    +      -       -      +
    415A  GLU      3.3     0.4    -      -       -      -
    416A  PHE*     1.4    74.8    -      -       -      +
    418A  ALA*     1.4    56.2    +      -       -      +
    420A  ALA*     3.4     7.8    +      -       -      +
    421A  PHE*     3.0    22.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 418 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    335A  HIS*     3.4    51.6    -      -       +      +
    338A  GLY*     4.7     0.7    -      -       -      -
    339A  HIS*     3.6    27.4    -      -       +      +
    342A  LEU*     4.1     5.1    -      -       -      +
    344A  HIS*     4.7     0.4    -      -       +      -
    414A  PHE      3.2     3.5    +      -       -      +
    415A  GLU      3.5     3.4    -      -       -      +
    417A  GLN*     1.4    76.6    -      -       -      +
    419A  ASP*     1.4    58.3    +      -       -      +
    420A  ALA      3.4     0.2    -      -       -      -
    421A  PHE*     3.5     8.2    +      -       -      +
    422A  ALA*     3.2    19.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 419 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    335A  HIS*     2.8    25.3    +      -       -      +
    415A  GLU      3.0    23.9    +      -       -      +
    416A  PHE*     3.6    11.0    -      -       +      +
    417A  GLN      3.3     0.2    -      -       -      -
    418A  ALA*     1.4    72.8    -      -       -      +
    420A  ALA*     1.4    60.1    +      -       -      +
    422A  ALA*     3.3     8.6    +      -       -      +
    423A  LYS*     3.2    21.3    +      -       -      +
    431A  LEU*     5.9     2.1    -      -       -      +
    435A  LEU*     4.8     6.2    -      -       -      +
    465A  ARG*     3.1    42.9    +      -       -      +
    468A  ALA*     6.1     3.1    -      -       +      -
    469A  LEU*     3.8    31.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 420 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    416A  PHE      3.0    17.3    +      -       -      +
    417A  GLN*     3.5     9.6    -      -       -      +
    419A  ASP*     1.4    74.1    -      -       -      +
    421A  PHE*     1.4    57.9    +      -       -      +
    423A  LYS*     3.4     8.6    +      -       -      +
    424A  LYS*     3.0    26.2    +      -       -      +
    472A  MET*     6.0     1.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 421 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    245A  ILE*     5.4    10.1    -      -       +      -
    334A  GLY      3.4    17.5    -      -       -      -
    337A  LEU*     4.4     7.2    -      -       +      -
    338A  GLY*     3.5    17.7    -      -       -      -
    341A  LYS*     3.7    25.8    -      -       +      -
    342A  LEU*     4.0    23.3    -      -       +      -
    417A  GLN      3.0    14.1    +      -       -      +
    418A  ALA      3.5     9.4    -      -       -      +
    419A  ASP      3.3     0.2    -      -       -      -
    420A  ALA*     1.4    74.6    -      -       -      +
    422A  ALA*     1.4    59.5    +      -       -      +
    424A  LYS*     3.3    11.9    +      -       +      +
    425A  LEU*     3.1    50.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 422 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    331A  ALA      4.2    10.1    -      -       -      +
    334A  GLY*     4.3     2.2    -      -       -      -
    335A  HIS*     4.1    19.1    -      -       +      +
    418A  ALA      3.2    13.5    +      -       -      +
    419A  ASP*     3.3    12.8    +      -       -      +
    421A  PHE*     1.4    74.8    -      -       -      +
    423A  LYS*     1.4    60.4    +      -       -      +
    425A  LEU*     3.3    18.8    +      -       -      +
    427A  LYS*     3.2    28.2    +      -       +      +
    428A  ALA      4.5     2.0    -      -       -      -
    431A  LEU*     4.8    13.7    -      -       +      -
    469A  LEU*     5.3     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 423 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    419A  ASP      3.2    12.6    +      -       -      +
    420A  ALA*     3.6    11.2    -      -       -      +
    421A  PHE      3.3     0.2    -      -       -      -
    422A  ALA*     1.4    74.5    -      -       -      +
    424A  LYS*     1.4    58.1    +      -       -      +
    425A  LEU      3.2     0.4    -      -       -      -
    426A  GLY*     3.1    18.2    +      -       -      -
    428A  ALA*     3.8    25.6    -      -       +      +
    469A  LEU*     4.4     4.7    -      -       +      -
    472A  MET*     3.8    30.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 424 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    420A  ALA      3.0    15.4    +      -       -      +
    421A  PHE*     3.4    19.5    -      -       +      +
    423A  LYS*     1.4    76.5    -      -       -      +
    425A  LEU*     1.4    59.5    +      -       +      +
    426A  GLY      3.3     0.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 425 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244A  SER*     5.7     6.1    -      -       -      +
    245A  ILE*     5.4    10.3    -      -       +      -
    334A  GLY*     3.7    29.4    -      -       -      +
    337A  LEU*     5.7     2.9    -      -       +      -
    421A  PHE*     3.1    47.2    +      -       +      +
    422A  ALA*     3.5     9.6    -      -       -      +
    423A  LYS      3.2     0.6    -      -       -      -
    424A  LYS*     1.4    77.0    -      -       +      +
    426A  GLY*     1.3    58.2    +      -       -      +
    427A  LYS*     3.4    12.9    +      -       +      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


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

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