Contacts of the helix formed by residues 334 - 362 (chain A) in PDB entry 3RFU


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 ARG 334 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148A  MET*     6.3     2.5    -      -       -      -
    205A  GLU*     3.6    27.1    +      -       -      -
    209A  ARG*     3.0    50.5    -      -       -      +
    332A  ILE*     4.2    11.0    +      -       +      +
    333A  GLN*     1.3    76.1    +      -       -      +
    335A  LEU*     1.3    67.0    +      -       -      +
    336A  ALA*     3.3     9.3    +      -       +      +
    337A  ASP*     3.4    32.9    +      -       -      +
    338A  THR*     3.6    14.0    +      -       -      +
    390A  THR*     5.6    10.0    -      -       +      +
    412A  GLU*     5.1     5.2    +      -       -      -
    415A  GLU*     5.0    10.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 335 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333A  GLN      4.9     5.2    -      -       -      +
    334A  ARG*     1.3    74.0    -      -       -      +
    336A  ALA*     1.3    59.3    +      -       -      +
    338A  THR*     2.7    24.1    +      -       +      +
    339A  VAL*     2.8    20.0    -      -       +      +
    390A  THR*     5.8     1.1    +      -       -      +
    675A  MET*     3.9    29.4    -      -       +      -
    678A  ILE*     4.2    18.2    -      -       +      -
    679A  ARG*     3.9    23.3    -      -       +      +
    682A  LEU*     3.9    14.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 336 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148A  MET*     4.6    18.2    -      -       +      -
    334A  ARG*     3.2     6.4    -      -       +      +
    335A  LEU*     1.3    79.7    -      -       -      +
    337A  ASP*     1.3    61.8    +      -       -      +
    339A  VAL*     3.2     8.4    -      -       -      +
    340A  SER*     2.7    38.8    +      -       -      +
    386A  LEU*     5.0     7.2    -      -       +      +
    390A  THR*     4.5    12.8    +      -       -      +
    682A  LEU*     4.2    20.8    -      -       +      +
    686A  PHE*     6.1     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 337 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146A  LEU      3.3    15.0    -      -       -      +
    147A  ASN*     3.4    22.1    +      -       +      +
    148A  MET*     3.4    36.9    +      -       -      +
    149A  PHE*     5.5     2.7    -      -       -      -
    333A  GLN*     4.5    11.0    -      -       -      +
    334A  ARG*     3.4    33.7    +      -       -      +
    335A  LEU      3.3     0.4    -      -       -      -
    336A  ALA*     1.3    78.2    -      -       -      +
    338A  THR*     1.3    58.1    +      -       -      +
    341A  GLY      3.0    18.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 338 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146A  LEU      5.3     0.2    -      -       -      -
    333A  GLN*     3.8    29.4    -      -       +      +
    334A  ARG      3.6     6.5    +      -       -      +
    335A  LEU*     2.7    30.9    +      -       -      +
    337A  ASP*     1.3    75.3    -      -       -      +
    339A  VAL*     1.3    57.9    +      -       -      +
    340A  SER      3.1     0.9    -      -       -      -
    341A  GLY*     2.7    22.3    +      -       -      -
    342A  TRP*     3.1    12.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 339 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    335A  LEU      2.8    24.9    -      -       -      +
    336A  ALA*     3.2    18.2    -      -       -      +
    338A  THR*     1.3    77.2    +      -       -      +
    340A  SER*     1.3    56.9    +      -       -      +
    342A  TRP*     3.4    11.1    +      -       +      +
    343A  PHE*     3.0    26.6    +      -       +      +
    682A  LEU*     4.5    11.4    -      -       +      -
    686A  PHE*     4.0    32.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 340 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147A  ASN      3.8     3.4    -      -       -      -
    148A  MET*     3.7    29.7    -      -       -      -
    151A  LEU*     4.3     9.9    -      -       -      -
    336A  ALA      2.7    23.4    +      -       -      -
    339A  VAL*     1.3    74.0    -      -       -      +
    341A  GLY*     1.3    63.9    +      -       -      +
    343A  PHE*     3.9     7.9    -      -       -      -
    344A  VAL*     2.9    34.0    +      -       -      +
    386A  LEU*     3.8     9.7    -      -       -      +
    686A  PHE*     3.7    17.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 341 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146A  LEU*     3.4    36.7    +      -       -      +
    337A  ASP      3.0     7.2    +      -       -      -
    338A  THR*     2.7    12.7    +      -       -      -
    340A  SER*     1.3    79.1    -      -       -      +
    342A  TRP*     1.3    54.3    +      -       -      -
    345A  PRO*     3.1    22.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 342 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    338A  THR      3.1     8.6    +      -       -      +
    339A  VAL*     3.8    11.2    -      -       +      +
    341A  GLY*     1.3    75.3    -      -       -      +
    343A  PHE*     1.3    82.8    +      +       +      +
    345A  PRO*     2.9    17.9    -      -       +      +
    346A  ALA*     3.1    34.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 343 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151A  LEU*     3.3    26.7    -      -       +      -
    339A  VAL*     3.0    19.1    +      -       +      +
    340A  SER*     3.6     8.1    -      -       -      +
    342A  TRP*     1.3    96.3    -      +       +      +
    344A  VAL*     1.3    64.1    +      -       -      +
    346A  ALA*     2.8    16.0    +      -       +      +
    347A  VAL*     2.9    39.4    +      -       +      +
    381A  ALA*     3.6    32.5    -      -       +      -
    686A  PHE*     3.5    32.1    -      +       +      -
    689A  ASN*     5.8     0.4    -      -       +      -
    690A  VAL*     4.7    27.4    -      -       +      -
    693A  VAL*     5.1     4.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 344 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146A  LEU*     3.6    22.0    -      -       +      -
    147A  ASN      4.6     0.7    -      -       -      +
    150A  THR*     3.5    24.2    -      -       -      +
    151A  LEU*     3.6    34.3    -      -       +      +
    154A  MET*     4.8    10.0    -      -       -      +
    340A  SER      2.9    20.5    +      -       -      +
    343A  PHE*     1.3    72.5    -      -       -      +
    345A  PRO*     1.3    73.9    -      -       +      +
    347A  VAL*     3.5     5.0    +      -       -      +
    348A  ILE*     3.0    40.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 345 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146A  LEU*     3.5    17.3    -      -       +      -
    341A  GLY      3.1    23.6    -      -       -      +
    342A  TRP*     2.9    20.6    -      -       -      +
    344A  VAL*     1.3    91.6    -      -       +      +
    346A  ALA*     1.3    61.9    +      -       -      +
    348A  ILE*     3.3     8.5    +      -       +      +
    349A  LEU*     3.0    22.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 346 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342A  TRP*     3.1    41.2    +      -       +      +
    343A  PHE*     2.8    15.7    +      -       +      +
    345A  PRO*     1.3    75.0    -      -       -      +
    347A  VAL*     1.3    62.2    +      -       +      +
    349A  LEU*     3.1    12.8    +      -       -      +
    350A  VAL*     3.0    26.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 347 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151A  LEU*     5.1     0.4    -      -       +      -
    154A  MET*     5.3     2.0    -      -       +      -
    343A  PHE*     2.9    57.1    +      -       +      +
    344A  VAL*     3.8     6.3    -      -       -      +
    346A  ALA*     1.3    74.7    -      -       +      +
    348A  ILE*     1.3    57.7    +      -       -      +
    350A  VAL*     3.3     9.1    +      -       +      +
    351A  ALA*     3.0    26.3    +      -       -      +
    377A  VAL*     3.8    20.8    -      -       +      +
    378A  LEU*     3.9    14.6    -      -       +      -
    381A  ALA*     3.5    23.6    -      -       +      -
    693A  VAL*     5.3     3.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 348 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154A  MET*     4.5    12.1    -      -       -      -
    344A  VAL*     3.0    33.1    +      -       +      +
    345A  PRO*     3.7     7.4    -      -       +      +
    346A  ALA      3.2     0.2    -      -       -      -
    347A  VAL*     1.3    74.0    -      -       -      +
    349A  LEU*     1.3    68.6    +      -       -      +
    351A  ALA*     3.2     7.6    +      -       +      +
    352A  VAL*     3.0    33.6    +      -       +      +
    378A  LEU*     4.4    15.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 349 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    345A  PRO      3.0    12.9    +      -       -      +
    346A  ALA*     3.3    12.1    -      -       -      +
    348A  ILE*     1.3    79.0    -      -       -      +
    350A  VAL*     1.3    64.6    +      -       +      +
    352A  VAL*     3.4     6.1    +      -       +      +
    353A  LEU*     3.0    55.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 350 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    346A  ALA*     3.0    19.7    +      -       +      +
    347A  VAL*     3.6     9.9    -      -       -      +
    349A  LEU*     1.3    79.5    -      -       +      +
    351A  ALA*     1.3    63.1    +      -       -      +
    353A  LEU*     3.3     9.2    +      -       +      +
    354A  SER*     3.0    30.3    +      -       -      +
    377A  VAL*     3.9    20.2    -      -       +      -
    693A  VAL*     4.6    15.5    -      -       +      -
    694A  PRO*     6.0     0.7    -      -       +      -
    697A  ALA*     4.6     8.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 351 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    347A  VAL      3.0    12.9    +      -       -      +
    348A  ILE*     3.5    12.1    -      -       +      +
    350A  VAL*     1.3    76.4    -      -       -      +
    352A  VAL*     1.3    64.3    +      -       +      +
    354A  SER*     3.1     6.9    +      -       -      -
    355A  PHE*     3.0    20.3    +      -       -      +
    374A  ALA*     3.8    24.2    -      -       +      +
    377A  VAL*     3.4    30.3    -      -       +      -
    378A  LEU*     4.4     8.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 352 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348A  ILE*     3.0    30.4    +      -       +      +
    349A  LEU*     3.9     7.6    -      -       +      +
    351A  ALA*     1.3    76.7    -      -       +      +
    353A  LEU*     1.3    67.3    +      -       +      +
    355A  PHE*     3.0    22.3    +      -       +      +
    356A  ILE*     3.0    28.2    +      -       +      +
    374A  ALA*     5.6     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 353 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    349A  LEU*     3.0    48.1    +      -       +      +
    350A  VAL*     3.8     7.9    -      -       +      +
    352A  VAL*     1.3    78.6    -      -       +      +
    354A  SER*     1.3    58.2    +      -       -      +
    356A  ILE*     3.2    19.2    +      -       +      +
    357A  VAL*     3.0    34.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 354 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    350A  VAL*     3.0    15.3    +      -       -      +
    351A  ALA*     3.4    11.0    -      -       -      -
    353A  LEU*     1.3    77.1    -      -       -      +
    355A  PHE*     1.3    56.8    +      -       -      +
    357A  VAL*     3.8     6.2    -      -       -      +
    358A  TRP*     3.0    37.9    +      -       -      -
    373A  ALA*     4.3    20.4    -      -       -      -
    377A  VAL*     5.5     0.6    -      -       -      +
    697A  ALA*     3.2    34.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 355 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    351A  ALA      3.0    12.1    +      -       -      +
    352A  VAL*     3.0    16.8    +      -       +      +
    354A  SER*     1.3    76.5    -      -       -      +
    356A  ILE*     1.3    59.4    +      -       +      +
    358A  TRP*     4.3     0.2    -      -       -      +
    359A  ALA*     2.8    48.0    +      -       +      +
    367A  LEU*     4.5    21.5    -      -       +      -
    370A  GLY*     3.4    34.7    +      -       -      +
    371A  LEU*     3.5    21.3    -      -       +      -
    374A  ALA*     4.8     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 356 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    352A  VAL*     3.0    29.5    +      -       +      +
    353A  LEU*     3.2    20.8    +      -       +      +
    354A  SER      3.1     0.2    -      -       -      -
    355A  PHE*     1.3    86.3    -      -       +      +
    357A  VAL*     1.3    62.0    +      -       +      +
    359A  ALA*     4.1     4.5    -      -       -      -
    360A  LEU*     3.0    53.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 357 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    353A  LEU*     3.0    22.4    +      -       +      +
    354A  SER*     3.3     7.8    +      -       -      +
    356A  ILE*     1.3    81.7    -      -       +      +
    358A  TRP*     1.3    62.8    +      -       +      +
    360A  LEU*     5.3     0.2    -      -       -      -
    361A  LEU*     3.1    35.7    +      -       +      +
    362A  GLY*     3.1    17.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 358 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    354A  SER*     3.0    27.9    +      -       -      +
    357A  VAL*     1.3    82.1    -      -       +      +
    359A  ALA*     1.3    62.7    +      -       -      +
    362A  GLY*     2.8    41.0    +      -       -      +
    363A  PRO*     5.0     3.1    -      -       +      -
    364A  GLN*     4.2    10.3    -      -       -      -
    367A  LEU*     4.8     9.7    -      -       -      +
    369A  TYR*     3.3    51.3    -      +       +      +
    370A  GLY*     3.5    20.9    -      -       -      +
    373A  ALA*     3.8    19.9    -      -       +      +
    697A  ALA      3.2    24.8    +      -       -      -
    698A  GLY*     4.7    12.2    +      -       -      -
    701A  TYR*     3.3    40.8    -      +       -      -
    706A  LEU*     6.0     0.4    -      -       +      -
    707A  LEU*     4.8     7.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 359 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    355A  PHE*     2.8    41.6    +      -       +      +
    356A  ILE*     4.0     5.6    -      -       -      +
    357A  VAL      3.3     0.2    -      -       -      -
    358A  TRP*     1.3    81.4    -      -       -      +
    360A  LEU*     1.3    70.8    +      -       +      +
    362A  GLY      4.5     0.3    +      -       -      -
    367A  LEU*     4.5    23.0    -      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
    356A  ILE*     3.0    41.3    +      -       +      +
    359A  ALA*     1.3    89.7    -      -       +      +
    361A  LEU*     1.3    63.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 361 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    357A  VAL*     3.1    35.1    +      -       +      +
    360A  LEU*     1.3    81.9    -      -       +      +
    362A  GLY*     1.3    53.4    +      -       -      +
    363A  PRO*     2.7    36.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 362 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    357A  VAL      3.1     3.2    +      -       -      -
    358A  TRP*     2.8    44.3    +      -       -      +
    359A  ALA      4.5     0.4    +      -       -      +
    360A  LEU      3.7     0.6    -      -       -      -
    361A  LEU*     1.3    73.6    -      -       -      +
    363A  PRO*     1.3    60.6    -      -       -      +
    364A  GLN*     2.8    24.9    +      -       -      +
    365A  PRO*     4.5     1.7    -      -       -      +
    367A  LEU*     6.1     0.5    -      -       -      -
----------------------------------------------------------
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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