Contacts of the helix formed by residues 349 - 371 (chain A) in PDB entry 3VF1


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 THR 349 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348A  ASP*     1.3    80.1    -      -       -      +
    350A  GLU*     1.3    60.5    +      -       -      +
    351A  TRP*     3.9     5.2    +      -       -      +
    352A  ASP*     3.1    31.1    +      -       -      +
    353A  TRP*     3.0    26.3    +      -       -      +
    586A  GLY*     4.6    17.5    -      -       -      +
    588A  SER      5.1     1.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 350 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348A  ASP      5.5     1.1    -      -       -      +
    349A  THR*     1.3    74.2    -      -       -      +
    351A  TRP*     1.3    66.3    +      -       +      +
    353A  TRP*     3.4     8.1    +      -       -      +
    354A  ILE*     3.1    32.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 351 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    210A  LEU*     4.2    14.6    -      -       +      -
    233A  ARG*     4.5     9.9    -      -       -      -
    349A  THR*     3.3     4.6    +      -       -      +
    350A  GLU*     1.3    77.5    -      -       +      +
    352A  ASP*     1.3    65.0    +      -       -      +
    354A  ILE*     3.3    22.3    +      -       +      +
    355A  MET*     3.0    23.2    +      -       -      +
    588A  SER*     3.4    26.6    -      -       -      +
    589A  ASN*     3.8    11.1    -      -       +      +
    590A  HIS*     3.6    50.1    -      +       +      +
    593A  ILE*     3.6    30.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 352 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    343A  TRP*     3.3    36.4    -      -       +      -
    348A  ASP*     4.2     3.4    -      -       +      +
    349A  THR*     3.1    32.2    +      -       -      +
    351A  TRP*     1.3    77.8    -      -       -      +
    353A  TRP*     1.3    56.8    +      -       -      +
    355A  MET*     3.1     4.3    +      -       -      +
    356A  ALA*     2.9    28.9    +      -       -      +
    584A  GLU      5.1     0.9    -      -       -      +
    585A  LYS*     3.5     4.9    -      -       -      +
    586A  GLY*     2.7    26.5    +      -       -      -
    587A  LYS      3.9     0.2    +      -       -      -
    588A  SER*     2.7    43.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 353 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235A  ASP*     3.1    26.6    +      -       -      -
    327A  PRO*     3.7    30.7    -      -       +      -
    329A  ALA      4.0    12.1    -      -       -      -
    330A  ILE*     3.8    28.9    -      -       +      -
    343A  TRP*     3.7    22.0    -      -       +      -
    344A  THR      3.9     8.3    -      -       -      +
    345A  PRO*     3.6    51.7    -      -       +      +
    348A  ASP*     4.8     2.4    -      -       +      +
    349A  THR      3.0    17.2    +      -       -      +
    350A  GLU*     3.7     7.9    -      -       -      +
    351A  TRP      3.3     0.2    -      -       -      -
    352A  ASP*     1.3    75.1    -      -       -      +
    354A  ILE*     1.3    63.5    +      -       +      +
    356A  ALA*     3.3     7.2    +      -       +      +
    357A  LYS*     3.0    47.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 354 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    210A  LEU*     5.4     0.4    -      -       +      -
    232A  TRP*     4.4    18.8    -      -       +      -
    233A  ARG*     4.5    26.5    -      -       +      +
    350A  GLU*     3.1    22.7    +      -       +      +
    351A  TRP*     3.6    28.7    -      -       +      +
    353A  TRP*     1.3    74.5    -      -       +      +
    355A  MET*     1.3    67.4    +      -       -      +
    357A  LYS*     3.3    22.8    +      -       -      +
    358A  LEU*     3.1    32.3    +      -       +      +
    593A  ILE*     3.9    17.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 355 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    343A  TRP*     6.3     0.4    -      -       +      -
    351A  TRP      3.0    14.0    +      -       -      +
    352A  ASP      3.4     8.5    -      -       -      +
    354A  ILE*     1.3    77.2    -      -       -      +
    356A  ALA*     1.3    63.4    +      -       -      +
    358A  LEU*     3.1    22.8    +      -       -      +
    359A  TRP*     3.2    50.0    +      -       +      +
    577A  MET*     5.4     1.6    -      -       -      -
    582A  PRO*     4.1    22.0    -      -       +      -
    588A  SER*     3.7    18.4    -      -       -      +
    592A  VAL*     4.0    19.1    -      -       +      -
    593A  ILE*     3.4    39.2    -      -       +      +
    596A  SER*     4.4    13.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 356 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    330A  ILE*     3.8    23.3    -      -       +      +
    332A  LEU*     4.2     9.6    -      -       -      +
    343A  TRP*     3.8    38.6    -      -       +      -
    352A  ASP      2.9    13.0    +      -       -      +
    353A  TRP*     3.6    11.0    -      -       +      +
    355A  MET*     1.3    78.1    -      -       -      +
    357A  LYS*     1.3    61.8    +      -       -      +
    359A  TRP*     3.3     5.2    +      -       -      +
    360A  LEU*     3.2    16.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 357 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232A  TRP*     5.0     2.8    +      -       -      -
    233A  ARG*     3.2    25.9    +      -       -      +
    234A  ASP      4.8     0.2    -      -       -      -
    235A  ASP*     2.8    24.3    +      -       -      +
    238A  PHE*     3.5    39.8    -      -       +      +
    330A  ILE*     3.9    11.0    -      -       +      -
    353A  TRP*     3.0    57.5    +      -       +      +
    354A  ILE*     3.6    20.6    -      -       -      +
    355A  MET      3.2     0.2    -      -       -      -
    356A  ALA*     1.3    74.6    -      -       -      +
    358A  LEU*     1.3    64.3    +      -       +      +
    360A  LEU*     3.2     3.6    +      -       -      +
    361A  ARG*     3.1    26.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 358 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232A  TRP*     3.9    17.5    -      -       +      -
    354A  ILE*     3.1    32.2    +      -       +      +
    355A  MET*     3.1    14.1    +      -       -      +
    357A  LYS*     1.3    76.7    -      -       +      +
    359A  TRP*     1.3    57.5    +      -       +      +
    361A  ARG*     3.4     4.1    +      -       +      +
    362A  CYS*     3.0    27.5    +      -       -      +
    571A  PRO*     3.2    32.5    -      -       +      +
    574A  PRO*     3.7    17.0    -      -       +      +
    577A  MET*     3.9    14.8    -      -       +      -
    593A  ILE*     3.7    29.6    -      -       +      -
    597A  LEU*     4.3    11.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 359 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309A  TYR*     3.9    15.9    -      -       +      -
    310A  ILE*     3.9    17.5    -      -       +      +
    311A  THR*     3.7    26.0    +      -       +      +
    313A  PRO*     4.3     4.1    -      -       -      +
    332A  LEU*     3.7    26.5    -      -       +      -
    355A  MET*     3.2    51.0    +      -       +      +
    356A  ALA      3.8     2.0    -      -       -      +
    357A  LYS      3.2     0.4    -      -       -      -
    358A  LEU*     1.3    75.9    -      -       -      +
    360A  LEU*     1.3    63.7    +      -       -      +
    362A  CYS*     3.7     5.0    -      -       +      +
    363A  ALA*     3.3    20.8    +      -       -      +
    577A  MET*     3.2    39.9    -      -       +      +
    579A  GLN      3.1    28.5    -      -       -      -
    580A  PRO      3.7     1.3    +      -       -      -
    581A  PRO*     3.5    34.0    -      -       +      +
    582A  PRO*     4.5     4.7    -      -       +      -
    596A  SER*     4.6     4.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 360 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238A  PHE*     4.1    11.9    -      -       +      -
    242A  PHE*     4.0    22.7    -      -       +      -
    290A  THR*     4.0     5.8    -      -       -      +
    292A  TYR*     3.9    18.1    -      -       +      -
    313A  PRO*     3.8    28.7    -      -       +      -
    314A  LEU      4.3     1.1    -      -       -      +
    315A  GLY*     4.0    23.8    -      -       -      +
    317A  PHE*     4.2     7.2    -      -       +      -
    327A  PRO*     5.8     0.4    -      -       +      -
    330A  ILE*     3.9    24.9    -      -       +      -
    332A  LEU*     5.1     0.4    -      -       -      +
    356A  ALA      3.2    11.5    +      -       -      +
    357A  LYS      3.2     9.5    +      -       -      +
    359A  TRP*     1.3    75.0    -      -       -      +
    361A  ARG*     1.3    63.7    +      -       -      +
    363A  ALA*     3.4     5.7    +      -       -      +
    364A  ASP*     3.2    19.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 361 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238A  PHE*     3.2    37.0    -      -       +      -
    241A  GLN*     3.8    36.3    +      -       -      +
    242A  PHE*     3.6    32.2    -      -       -      -
    246A  SER      5.9     1.0    -      -       -      +
    357A  LYS      3.1     7.4    +      -       -      +
    358A  LEU*     3.8     2.0    -      -       +      +
    360A  LEU*     1.3    73.6    -      -       -      +
    362A  CYS*     1.3    60.6    +      -       -      +
    364A  ASP*     3.0    25.7    +      -       -      +
    365A  THR*     2.9    32.2    +      -       -      -
    566A  THR*     4.0    13.9    -      -       -      +
    571A  PRO      5.6     0.7    -      -       -      +
    572A  ASN*     3.1    22.8    +      -       -      +
    573A  SER*     3.3    24.1    +      -       -      -
    574A  PRO*     3.8    19.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 362 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    310A  ILE*     3.4    21.5    -      -       +      -
    358A  LEU      3.0    18.1    +      -       -      +
    359A  TRP*     3.7     9.6    -      -       -      +
    360A  LEU      3.3     0.2    -      -       -      -
    361A  ARG*     1.3    76.7    -      -       -      +
    363A  ALA*     1.3    62.9    +      -       -      +
    365A  THR*     3.2     7.6    +      -       -      -
    366A  GLN*     3.0    27.4    +      -       -      -
    574A  PRO*     3.3    27.0    +      -       +      +
    576A  LEU*     3.9    33.0    -      -       -      -
    577A  MET*     4.1    11.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 363 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292A  TYR*     4.2     7.6    -      -       +      -
    295A  LEU*     3.6    27.6    -      -       +      +
    310A  ILE*     3.8     9.5    -      -       +      +
    311A  THR*     4.7     0.4    -      -       -      +
    313A  PRO*     3.5    34.3    -      -       +      -
    359A  TRP      3.3     5.9    +      -       -      +
    360A  LEU      3.5     4.7    -      -       -      +
    361A  ARG      3.2     0.2    -      -       -      -
    362A  CYS*     1.3    78.2    -      -       -      +
    364A  ASP*     1.3    63.9    +      -       -      +
    366A  GLN*     3.2     7.6    +      -       -      +
    367A  TYR*     3.2    19.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 364 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242A  PHE*     4.1     9.0    -      -       +      -
    247A  ASN*     3.0    34.9    +      -       -      +
    250A  VAL*     4.1     3.1    -      -       -      +
    292A  TYR*     2.6    35.9    +      -       -      +
    360A  LEU      3.2     8.3    +      -       -      +
    361A  ARG*     3.0    36.9    +      -       -      +
    363A  ALA*     1.3    79.0    -      -       -      +
    365A  THR*     1.3    58.5    +      -       -      +
    367A  TYR*     3.2     2.3    +      -       -      +
    368A  HIS*     2.8    28.1    +      -       -      +
    567A  TYR*     5.4     0.5    +      -       -      -
    573A  SER*     5.0     1.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 365 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    361A  ARG      2.9     8.5    +      -       -      -
    362A  CYS      3.2     4.5    +      -       -      -
    364A  ASP*     1.3    75.3    -      -       -      +
    366A  GLN*     1.3    66.7    +      -       -      +
    368A  HIS      3.2     0.2    +      -       -      -
    369A  GLN*     3.0    29.0    +      -       +      +
    431A  LEU*     4.1    10.8    -      -       +      -
    567A  TYR*     3.5    30.6    -      -       +      +
    573A  SER*     2.9    24.9    +      -       -      -
    574A  PRO      2.9    26.7    +      -       -      +
    575A  THR*     3.9    18.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 366 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295A  LEU*     4.0    16.8    -      -       +      -
    310A  ILE*     3.9    17.9    -      -       +      -
    362A  CYS*     3.0    25.4    +      -       -      +
    363A  ALA*     3.4     7.6    -      -       -      +
    365A  THR*     1.3    77.9    -      -       -      +
    367A  TYR*     1.3    63.0    +      -       -      +
    370A  MET*     3.3    28.2    +      -       -      +
    431A  LEU*     3.7    14.0    -      -       -      +
    432A  SER*     3.5    13.6    +      -       -      -
    433A  ILE*     3.3    44.9    +      -       +      +
    441A  LEU*     3.7     3.5    -      -       -      +
    575A  THR      2.8    29.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 367 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247A  ASN*     3.6    11.2    -      -       -      +
    249A  GLU*     4.2    15.4    +      -       +      +
    250A  VAL*     3.9    24.0    -      -       +      +
    291A  ASP      5.9     2.0    -      -       -      -
    292A  TYR*     4.2    17.7    -      +       +      -
    294A  ILE*     4.0    24.2    -      -       +      -
    295A  LEU*     5.3     3.1    -      -       +      +
    363A  ALA      3.2     9.2    +      -       -      +
    364A  ASP      3.4     9.2    -      -       -      +
    365A  THR      3.2     0.4    -      -       -      -
    366A  GLN*     1.3    80.5    -      -       -      +
    368A  HIS*     1.3    57.0    +      -       -      +
    371A  ILE*     2.9    55.9    +      -       +      +
    372A  THR*     3.1    26.2    +      -       -      -
    376A  ARG*     5.5     0.2    -      -       -      -
    441A  LEU*     4.5     8.0    -      -       -      +
    445A  HIS*     4.1    17.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 368 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    246A  SER*     2.9    32.3    +      -       -      -
    247A  ASN*     3.7    14.8    -      -       +      +
    364A  ASP*     2.8    20.5    +      -       -      +
    365A  THR*     3.2     1.1    +      -       -      +
    367A  TYR*     1.3    73.3    -      -       -      +
    369A  GLN*     1.3    64.5    +      -       -      +
    372A  THR*     3.3    18.2    +      -       +      -
    373A  HIS*     2.8    35.3    +      -       +      +
    559A  VAL*     2.8    29.5    +      -       +      +
    563A  GLN*     3.5    28.9    -      -       +      -
    567A  TYR*     2.8    29.6    +      +       -      +
----------------------------------------------------------
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Residues in contact with GLN 369 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    365A  THR*     3.0    23.5    +      -       +      +
    366A  GLN      4.2     0.2    -      -       -      +
    368A  HIS*     1.3    80.8    +      -       -      +
    370A  MET*     1.3    62.2    +      -       -      +
    373A  HIS*     3.6    10.7    +      -       -      +
    374A  LEU*     3.2    36.0    +      -       +      +
    427A  ALA*     6.2     0.4    -      -       +      -
    430A  VAL*     6.1     1.3    -      -       +      -
    431A  LEU*     4.1    31.4    -      -       +      -
    563A  GLN*     2.9    28.0    +      -       -      +
    567A  TYR*     3.5    24.2    -      -       -      -
    606A  MET*     3.8    17.0    -      -       +      +
    613A  LEU*     4.5     8.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 370 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    366A  GLN      3.3    15.9    +      -       -      +
    369A  GLN*     1.3    81.7    -      -       -      +
    371A  ILE*     1.3    60.6    +      -       -      +
    374A  LEU*     3.7    23.5    -      -       +      +
    375A  LEU*     3.0    28.1    +      -       -      +
    421A  ILE*     4.9     3.8    -      -       +      -
    427A  ALA*     4.2     7.2    -      -       +      -
    431A  LEU*     3.6    29.8    -      -       +      -
    433A  ILE*     4.0    11.7    -      -       +      -
    438A  GLN*     3.3    44.2    -      -       +      +
    441A  LEU*     4.0    10.1    -      -       +      -
    442A  MET*     3.4    29.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 371 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    294A  ILE*     3.7    30.3    -      -       +      -
    367A  TYR*     2.9    45.7    +      -       +      +
    370A  MET*     1.3    79.1    -      -       -      +
    372A  THR*     1.3    60.0    +      -       -      +
    373A  HIS      3.3     1.3    -      -       -      -
    375A  LEU*     3.8     3.3    +      -       +      -
    376A  ARG*     2.9    48.4    +      -       -      +
    441A  LEU*     3.8    29.8    -      -       +      +
    442A  MET*     4.8     1.8    -      -       -      -
    445A  HIS*     3.7    36.8    -      -       +      +
----------------------------------------------------------
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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