Contacts of the helix formed by residues 403 - 426 (chain D) in PDB entry 7REQ


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 TYR 403 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55C  TYR*     5.2     7.8    -      +       -      -
     61C  LEU*     3.6    42.6    +      -       +      +
     72C  HIS*     5.8     0.2    -      +       -      -
    404C  SER*     3.1    34.9    +      -       -      +
    405C  GLY*     3.5    20.6    -      -       -      -
     76D  TYR*     3.8    23.6    -      -       +      -
     77D  ARG      3.5    24.2    -      -       -      +
     78D  PRO*     3.6    33.6    -      -       +      +
     80D  ASP*     3.9     4.9    -      -       -      +
     81D  ALA*     3.9    16.2    -      -       +      -
    401D  GLY      3.1     9.6    +      -       -      -
    402D  SER*     1.3    70.1    -      -       -      +
    404D  TYR*     1.3    62.0    +      -       -      +
    406D  GLU*     4.1     0.2    -      -       -      -
    407D  SER*     3.0    26.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 404 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    395C  GLY      4.5     1.1    +      -       -      -
    398C  ARG*     2.9    39.6    +      -       +      +
    399C  VAL*     3.5    30.2    -      -       +      +
    402C  PRO*     3.6    33.1    +      -       +      +
    404C  SER      4.8     0.2    +      -       -      -
     72D  ILE*     4.0    11.4    -      -       +      -
     76D  TYR*     3.4    37.9    -      +       +      +
    291D  PHE*     3.5    39.4    -      +       +      +
    402D  SER*     3.4     0.6    +      -       -      -
    403D  TYR*     1.3    79.8    -      -       -      +
    405D  VAL*     1.3    56.6    +      -       +      +
    407D  SER*     3.6     1.4    -      -       -      -
    408D  LEU*     2.9    43.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 405 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    403C  TRP*     5.4     0.4    -      -       +      -
    291D  PHE*     3.7    35.9    -      -       +      +
    294D  ILE*     3.8    25.1    -      -       +      -
    295D  ALA*     4.7     5.8    -      -       +      +
    298D  ARG*     3.9    13.0    -      -       -      +
    399D  ALA*     4.1    17.5    -      -       +      +
    402D  SER*     3.2    25.5    +      -       -      +
    404D  TYR*     1.3    73.9    -      -       +      +
    406D  GLU*     1.3    61.3    +      -       -      +
    408D  LEU*     4.1     5.3    -      -       -      +
    409D  THR*     2.7    43.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 406 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80D  ASP      4.2     1.3    -      -       -      -
     81D  ALA*     3.9    10.3    -      -       +      -
     82D  PRO*     3.9    35.6    -      -       +      +
     85D  LEU*     4.2     8.0    -      -       -      +
     94D  THR*     4.6     4.3    -      -       -      +
    298D  ARG*     2.8    41.5    +      -       -      +
    399D  ALA      5.0     0.4    -      -       -      -
    400D  GLY*     3.6     1.1    -      -       -      -
    401D  GLY*     2.8    33.9    +      -       -      -
    402D  SER      2.9    25.0    +      -       -      +
    403D  TYR      4.1     0.4    -      -       -      +
    405D  VAL*     1.3    70.7    -      -       -      +
    407D  SER*     1.3    64.1    +      -       -      +
    409D  THR*     3.5     2.6    +      -       -      -
    410D  ARG*     3.3    21.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 407 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76D  TYR*     3.3    31.4    -      -       -      -
     80D  ASP*     3.6    20.3    +      -       -      +
    403D  TYR      3.0    19.5    +      -       -      -
    404D  TYR      3.6     0.7    -      -       -      -
    406D  GLU*     1.3    76.2    -      -       -      +
    408D  LEU*     1.3    56.2    +      -       -      +
    410D  ARG*     3.3     6.2    +      -       -      +
    411D  SER*     3.0    32.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 408 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398C  ARG*     4.7     0.7    -      -       -      +
     70D  ILE*     3.9    27.6    -      -       +      -
     71D  ASP      5.5     0.4    -      -       -      +
     72D  ILE*     4.0    15.0    -      -       +      -
     76D  TYR*     5.3     3.3    -      -       -      +
    291D  PHE*     3.9    25.4    -      -       +      +
    292D  LEU*     3.7    29.6    -      -       +      +
    295D  ALA*     3.8    10.8    -      -       +      -
    404D  TYR*     2.9    45.9    +      -       +      +
    405D  VAL*     4.1     2.7    -      -       -      +
    407D  SER*     1.3    72.5    -      -       -      +
    409D  THR*     1.3    54.9    +      -       -      +
    411D  SER*     3.8     5.9    -      -       -      -
    412D  LEU*     2.9    31.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 409 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94D  THR*     4.0    10.1    -      -       +      -
    295D  ALA*     3.6    23.9    -      -       -      +
    298D  ARG*     2.9    32.0    +      -       +      +
    299D  ALA*     3.3    33.8    -      -       -      +
    302D  GLU*     4.2     7.2    -      -       -      +
    405D  VAL      2.7    22.4    +      -       -      -
    406D  GLU*     3.6     4.7    -      -       -      +
    408D  LEU*     1.3    73.3    -      -       -      +
    410D  ARG*     1.3    56.9    +      -       -      +
    412D  LEU*     4.7     0.2    -      -       -      -
    413D  ALA*     2.9    25.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 410 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12C  LEU*     3.9    15.9    -      -       -      +
     13C  GLY      2.8    32.3    +      -       -      +
     14C  ASN*     4.2    11.8    -      -       -      +
     15C  ALA*     4.4     1.4    -      -       -      +
    302D  GLU*     2.9    30.1    +      -       -      +
    406D  GLU      3.3    10.0    +      -       -      +
    407D  SER*     3.7     9.6    -      -       -      +
    409D  THR*     1.3    76.7    -      -       -      +
    411D  SER*     1.3    57.5    +      -       -      +
    413D  ALA*     3.3     3.5    +      -       -      -
    414D  ASP*     2.9    62.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 411 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70D  ILE*     4.2    23.5    -      -       -      +
     71D  ASP      5.5     2.2    +      -       -      -
    407D  SER*     3.0    24.1    +      -       -      -
    408D  LEU*     3.4     9.1    +      -       -      -
    410D  ARG*     1.3    75.8    -      -       -      +
    412D  LEU*     1.3    55.8    +      -       -      +
    414D  ASP*     4.0     5.6    -      -       -      +
    415D  ALA*     3.1    30.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 412 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70D  ILE*     4.0    25.6    -      -       +      -
    248D  ASP*     4.2    18.4    -      -       +      -
    249D  VAL*     4.3     8.4    -      -       +      +
    252D  LEU*     4.1     6.7    -      -       +      -
    292D  LEU*     3.7    29.8    -      -       +      +
    295D  ALA*     3.7    14.4    -      -       +      -
    296D  ARG*     3.5    35.7    -      -       +      +
    299D  ALA*     4.2     7.4    -      -       +      -
    408D  LEU*     2.9    16.7    +      -       +      +
    409D  THR      3.9     3.1    -      -       -      +
    411D  SER*     1.3    70.7    -      -       -      +
    413D  ALA*     1.3    65.1    +      -       -      +
    415D  ALA*     4.8     2.9    -      -       -      -
    416D  ALA*     2.9    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 413 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12C  LEU*     3.9    20.1    -      -       +      +
    252D  LEU*     4.6     3.6    -      -       -      -
    256D  LEU*     5.8     0.2    -      -       -      +
    299D  ALA*     3.8    23.3    -      -       +      +
    302D  GLU*     4.4    12.8    -      -       +      +
    303D  ALA*     5.3     5.9    -      -       +      +
    409D  THR      2.9    22.7    +      -       -      +
    410D  ARG*     3.3     6.9    +      -       -      +
    412D  LEU*     1.3    72.6    -      -       -      +
    414D  ASP*     1.3    56.1    +      -       -      +
    416D  ALA*     3.7     0.9    -      -       -      +
    417D  TRP*     2.8    32.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 414 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12C  LEU*     3.3     9.2    -      -       -      +
    410D  ARG*     2.9    63.0    +      -       -      +
    411D  SER*     4.0     4.7    -      -       -      +
    413D  ALA*     1.3    71.4    -      -       -      +
    415D  ALA*     1.4    61.7    +      -       -      +
    417D  TRP*     3.4     6.7    +      -       -      +
    418D  LYS*     3.1    24.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 415 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68D  ASP      6.1     0.2    -      -       -      +
     70D  ILE*     3.9    21.8    -      -       +      -
    249D  VAL*     3.6    21.2    -      -       +      +
    411D  SER      3.1    18.3    +      -       -      +
    412D  LEU      4.2     1.3    -      -       -      +
    414D  ASP*     1.4    76.4    -      -       -      +
    416D  ALA*     1.3    61.6    +      -       -      +
    418D  LYS*     3.7     8.4    +      -       -      +
    419D  GLU*     3.3    17.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 416 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249D  VAL*     3.8    12.3    -      -       +      +
    252D  LEU*     3.5    31.0    -      -       +      -
    253D  ALA*     3.3    25.7    -      -       -      +
    256D  LEU*     4.8     4.5    -      -       +      -
    412D  LEU      2.9    18.8    +      -       -      +
    413D  ALA*     4.0     1.6    -      -       -      +
    415D  ALA*     1.3    73.9    -      -       -      +
    417D  TRP*     1.3    57.8    +      -       -      +
    419D  GLU      3.3     0.7    +      -       -      -
    420D  PHE*     2.9    28.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 417 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7C  PHE*     4.2    10.8    -      +       -      -
     10C  VAL*     2.9    36.4    +      -       +      -
     11C  ASP*     4.0    12.6    -      -       -      -
     12C  LEU*     3.5    39.3    -      -       +      +
    256D  LEU*     4.5     2.8    -      -       +      +
    303D  ALA*     3.7    32.8    -      -       +      -
    306D  ARG*     3.8    17.5    -      -       +      -
    307D  ILE*     4.0    11.2    -      -       +      -
    413D  ALA      2.8    23.0    +      -       -      +
    414D  ASP*     3.4     9.4    +      -       -      +
    416D  ALA*     1.3    68.8    -      -       -      +
    418D  LYS*     1.3    55.4    +      -       -      +
    420D  PHE*     3.1    36.1    +      +       -      +
    421D  GLN*     2.9    52.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 418 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    414D  ASP      3.1    16.7    +      -       -      +
    415D  ALA*     3.7     8.7    -      -       -      +
    416D  ALA      3.4     0.2    -      -       -      -
    417D  TRP*     1.3    74.6    -      -       -      +
    419D  GLU*     1.3    61.3    +      -       -      +
    421D  GLN*     3.4    17.4    +      -       -      +
    422D  GLU*     3.2    26.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 419 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249D  VAL*     4.8     6.7    -      -       +      -
    250D  ALA*     5.0     6.3    -      -       +      -
    253D  ALA*     3.5    23.8    -      -       +      -
    254D  TRP*     2.8    26.9    +      -       +      +
    415D  ALA      3.3    12.5    +      -       -      +
    416D  ALA*     3.3     0.6    +      -       -      -
    418D  LYS*     1.3    77.7    -      -       -      +
    420D  PHE*     1.3    59.9    +      -       -      +
    422D  GLU*     3.3     8.8    +      -       -      +
    423D  VAL*     3.2    22.7    +      -       -      +
    437D  HIS*     2.7    36.5    +      -       -      -
    441D  VAL*     4.1    10.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 420 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7C  PHE*     3.5    40.2    -      +       +      -
    253D  ALA*     3.9    14.0    -      -       -      +
    256D  LEU*     3.9     9.2    -      -       +      -
    257D  ALA*     3.5    36.6    -      -       +      -
    260D  ALA*     3.8    11.0    -      -       +      -
    307D  ILE*     3.7    27.4    -      -       +      -
    416D  ALA      2.9    17.9    +      -       -      +
    417D  TRP*     3.3    36.6    -      +       -      +
    419D  GLU*     1.3    70.5    -      -       -      +
    421D  GLN*     1.3    61.6    +      -       +      +
    423D  VAL*     3.2     7.6    +      -       -      +
    424D  GLU*     3.1    32.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 421 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7C  PHE      3.4    15.9    +      -       -      +
      8C  ASP*     3.4    34.5    +      -       -      +
      9C  SER*     4.3     1.6    -      -       -      +
     10C  VAL      2.6    30.7    +      -       -      +
     11C  ASP*     4.7     4.2    +      -       -      +
    417D  TRP*     2.9    32.7    +      -       +      +
    418D  LYS*     3.5    21.7    -      -       -      +
    420D  PHE*     1.3    72.2    -      -       +      +
    422D  GLU*     1.3    58.5    +      -       -      +
    424D  GLU*     3.3     3.5    +      -       -      -
    425D  LYS*     3.0    24.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 422 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418D  LYS*     3.2    19.5    +      -       +      +
    419D  GLU*     3.3    19.5    +      -       -      +
    421D  GLN*     1.3    74.6    -      -       -      +
    423D  VAL*     1.3    64.2    +      -       -      +
    425D  LYS*     3.6    16.4    +      -       -      +
    426D  LEU*     3.2    30.4    +      -       +      +
    437D  HIS*     4.8     9.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 423 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254D  TRP*     3.8    18.4    -      -       +      +
    257D  ALA*     3.6    21.3    -      -       +      -
    419D  GLU*     3.2    31.0    +      -       -      +
    420D  PHE      3.2     8.3    +      -       -      +
    422D  GLU*     1.3    73.7    -      -       -      +
    424D  GLU*     1.3    60.4    +      -       +      +
    426D  LEU*     3.4    18.8    +      -       -      +
    427D  GLY      3.5     0.7    +      -       -      -
    428D  GLY*     2.9    20.9    +      -       -      +
    429D  MET*     3.6    33.2    -      -       -      +
    432D  ALA*     4.2     6.0    -      -       +      +
    437D  HIS*     3.9    12.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 424 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6C  ARG*     3.7    11.4    +      -       -      -
      7C  PHE*     2.7    32.3    +      -       +      -
      8C  ASP*     3.7    23.2    -      -       +      +
    257D  ALA*     5.0     3.1    -      -       -      +
    260D  ALA*     4.3     2.4    -      -       -      +
    264D  ARG*     2.7    46.7    +      -       -      -
    420D  PHE*     3.1    36.5    +      -       +      +
    421D  GLN      3.5     9.2    -      -       -      +
    423D  VAL*     1.3    75.3    -      -       +      +
    425D  LYS*     1.3    58.0    +      -       -      +
    427D  GLY*     3.3    11.8    +      -       -      -
    428D  GLY*     3.7    13.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 425 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8C  ASP*     3.8    21.0    -      -       +      +
    421D  GLN      3.0    17.4    +      -       -      +
    422D  GLU*     3.8    22.2    -      -       -      +
    423D  VAL      3.4     0.4    -      -       -      -
    424D  GLU*     1.3    72.3    -      -       -      +
    426D  LEU*     1.3    59.2    +      -       +      +
    427D  GLY      3.4     0.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 426 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    422D  GLU*     3.2    17.0    -      -       +      +
    423D  VAL*     3.4    10.5    +      -       -      +
    424D  GLU      3.4     0.6    -      -       -      -
    425D  LYS*     1.3    74.5    -      -       +      +
    427D  GLY*     1.3    56.6    +      -       -      +
    428D  GLY      5.0     1.8    -      -       -      +
    431D  LYS*     3.9    17.4    -      -       +      +
    432D  ALA*     4.9     6.7    -      -       +      +
    435D  THR*     5.5     2.2    -      -       -      +
    437D  HIS*     3.6    44.4    -      -       +      +
----------------------------------------------------------
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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