Contacts of the helix formed by residues 351 - 377 (chain A) in PDB entry 4FE1


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 SER 351 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    347A  VAL*     3.1    17.1    +      -       -      +
    348A  LEU      4.8     0.5    -      -       -      +
    349A  THR      3.8     0.4    -      -       -      -
    350A  THR*     1.3    81.6    -      -       -      +
    352A  TRP*     1.3    61.5    +      -       -      +
    354A  ALA*     3.3    16.7    +      -       -      +
    355A  GLN*     3.5    16.6    +      -       -      +
    415A  PHE*     3.1    24.3    -      -       -      -
    419A  ASP*     2.6    37.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 352 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65A  LEU*     3.9    21.8    -      -       +      +
     68A  ILE*     4.3     5.2    -      -       +      -
     69A  SER*     3.0    41.2    +      -       -      +
     72A  ILE*     3.4    48.5    -      -       +      +
     73A  PHE*     5.6     0.4    -      -       -      -
     76A  HIS*     4.8     8.3    -      +       -      -
    190A  PHE*     4.3    21.8    -      +       +      -
    350A  THR      5.4     1.3    -      -       -      -
    351A  SER*     1.3    70.2    +      -       -      +
    353A  HIS*     1.3    64.7    +      -       +      +
    355A  GLN*     3.2    16.1    +      -       +      +
    356A  LEU*     2.9    28.4    +      -       -      +
    419A  ASP*     4.2     2.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 353 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  ASP*     5.7     1.1    -      -       -      -
     59A  ASP*     2.9    34.6    +      -       -      -
    351A  SER*     3.3     0.8    +      -       -      -
    352A  TRP*     1.3    83.5    -      -       +      +
    354A  ALA*     1.3    56.6    +      -       -      +
    356A  LEU*     3.4     7.8    +      -       +      +
    357A  ALA*     2.9    24.6    +      -       -      +
    411A  HIS*     3.2    51.6    +      +       -      +
    414A  ILE*     3.4    32.3    -      -       +      +
    415A  PHE*     3.9     8.1    -      -       -      +
    418A  ARG*     4.3     6.3    +      -       -      -
    419A  ASP*     3.8    22.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 354 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    347A  VAL*     4.2     9.0    -      -       +      +
    348A  LEU*     3.6    20.0    -      -       +      -
    351A  SER*     3.3    25.2    +      -       -      +
    352A  TRP      3.2     0.2    -      -       -      -
    353A  HIS*     1.3    73.4    -      -       -      +
    355A  GLN*     1.3    66.4    +      -       -      +
    357A  ALA*     3.2     8.5    +      -       -      +
    358A  ILE*     3.1    26.5    +      -       -      +
    415A  PHE*     3.8    21.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 355 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    193A  VAL*     5.0     9.3    -      -       -      +
    348A  LEU*     2.7    49.5    +      -       +      +
    351A  SER      3.5     9.4    +      -       -      +
    352A  TRP*     3.2    20.3    +      -       +      +
    354A  ALA*     1.3    78.8    -      -       -      +
    356A  LEU*     1.3    58.2    +      -       -      +
    358A  ILE*     3.3     5.0    +      -       -      +
    359A  ASN*     2.9    55.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 356 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    352A  TRP      2.9    16.5    +      -       -      +
    353A  HIS*     3.7     7.4    -      -       +      +
    355A  GLN*     1.3    77.7    -      -       -      +
    357A  ALA*     1.3    61.3    +      -       -      +
    359A  ASN*     4.6     6.7    -      -       +      +
    360A  LEU*     2.9    56.0    +      -       +      +
    411A  HIS*     3.2    41.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 357 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    353A  HIS      2.9    14.0    +      -       -      +
    354A  ALA*     3.2    12.1    +      -       -      +
    356A  LEU*     1.3    76.6    -      -       -      +
    358A  ILE*     1.3    65.3    +      -       +      +
    361A  ALA*     3.0    22.4    +      -       -      +
    408A  GLY*     3.2    32.8    -      -       -      +
    411A  HIS*     4.2     2.0    -      -       -      +
    412A  GLY*     3.5    20.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 358 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348A  LEU*     3.6    42.2    -      -       +      -
    354A  ALA      3.1     6.6    +      -       -      +
    355A  GLN*     3.7     8.7    -      -       -      +
    357A  ALA*     1.3    81.8    -      -       +      +
    359A  ASN*     1.3    73.3    +      -       -      +
    361A  ALA*     3.1     8.5    +      -       -      +
    362A  MET*     3.0    33.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 359 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    355A  GLN*     2.9    41.3    +      -       -      +
    356A  LEU*     4.3     7.6    -      -       +      +
    358A  ILE*     1.3    83.6    -      -       -      +
    360A  LEU*     1.3    57.5    +      -       -      +
    362A  MET*     3.6     4.2    +      -       -      +
    363A  MET*     2.9    38.6    +      -       +      +
----------------------------------------------------------
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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  LEU*     2.9    46.7    +      -       +      +
    359A  ASN*     1.3    74.7    -      -       -      +
    361A  ALA*     1.3    66.9    +      -       -      +
    363A  MET*     4.4     3.8    -      -       +      -
    364A  GLY      3.0    19.9    +      -       -      -
    404A  LEU*     3.3    59.0    -      -       +      +
    407A  GLY*     3.7    23.1    -      -       -      +
    408A  GLY*     3.5     6.5    -      -       -      +
    411A  HIS*     4.1     6.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 361 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    357A  ALA      3.0    18.7    +      -       -      +
    358A  ILE*     3.5     6.5    -      -       -      +
    360A  LEU*     1.3    76.4    -      -       -      +
    362A  MET*     1.3    64.4    +      -       +      +
    364A  GLY*     3.9     0.7    -      -       -      -
    365A  SER*     3.0    33.3    +      -       -      -
    405A  VAL*     4.1    19.6    -      -       +      +
    408A  GLY*     4.0     6.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 362 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    358A  ILE*     3.0    29.1    +      -       +      +
    359A  ASN*     4.1     4.7    -      -       -      +
    361A  ALA*     1.3    81.5    -      -       +      +
    363A  MET*     1.3    59.4    +      -       -      +
    365A  SER*     3.8     9.8    -      -       -      -
    366A  LEU*     2.9    32.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 363 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    359A  ASN*     2.9    29.9    +      -       +      +
    360A  LEU*     3.8     5.8    -      -       +      +
    362A  MET*     1.3    75.8    -      -       -      +
    364A  GLY*     1.3    58.1    +      -       -      +
    366A  LEU*     3.3    18.5    +      -       +      +
    367A  SER*     2.9    27.6    +      -       -      -
    404A  LEU*     3.8    22.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 364 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    360A  LEU      3.0    12.5    +      -       -      -
    361A  ALA      3.9     0.9    -      -       -      -
    363A  MET*     1.3    74.1    -      -       -      +
    365A  SER*     1.3    64.2    +      -       -      +
    367A  SER      3.1     2.3    +      -       -      -
    368A  ILE*     3.0    30.1    +      -       -      +
    401A  GLY*     3.2    18.2    -      -       -      -
    404A  LEU*     3.5    23.6    -      -       -      +
    405A  VAL*     3.9     3.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 365 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    361A  ALA      3.0    18.7    +      -       -      -
    362A  MET*     3.8    13.8    -      -       -      -
    363A  MET      3.4     0.2    -      -       -      -
    364A  GLY*     1.3    75.5    -      -       -      +
    366A  LEU*     1.3    57.8    +      -       -      +
    368A  ILE*     3.2    12.0    +      -       -      +
    369A  ILE*     3.0    40.0    +      -       -      +
    405A  VAL*     3.9     8.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 366 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    362A  MET      2.9    18.5    +      -       -      +
    363A  MET*     3.4    21.3    -      -       +      +
    365A  SER*     1.3    77.5    -      -       -      +
    367A  SER*     1.3    57.2    +      -       -      +
    369A  ILE*     3.0    22.3    +      -       +      +
    370A  VAL*     2.9    43.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 367 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    363A  MET*     2.9    14.4    +      -       -      -
    364A  GLY*     3.1     9.1    +      -       -      -
    366A  LEU*     1.3    76.0    -      -       -      +
    368A  ILE*     1.3    57.7    +      -       -      +
    370A  VAL*     3.3    10.3    +      -       -      +
    371A  ALA      3.0    21.5    +      -       -      -
    397A  HIS*     2.5    46.4    +      -       -      +
    400A  ILE*     3.8    12.2    -      -       -      +
    401A  GLY*     3.5    12.0    +      -       -      -
    404A  LEU*     5.5     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 368 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    364A  GLY      3.0    28.2    +      -       -      +
    365A  SER*     3.5    11.0    -      -       -      +
    366A  LEU      3.1     0.2    -      -       -      -
    367A  SER*     1.3    73.6    -      -       -      +
    369A  ILE*     1.3    70.7    +      -       +      +
    371A  ALA*     3.0     5.5    +      -       -      +
    372A  GLN*     3.0    25.9    +      -       +      +
    397A  HIS      4.4     0.7    -      -       -      -
    398A  MET*     3.7    38.1    -      -       +      +
    401A  GLY*     3.6    26.2    -      -       -      +
    402A  GLY*     4.0     3.4    -      -       -      +
    405A  VAL*     4.2     7.9    -      -       +      -
    606A  ILE*     5.2     4.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 369 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    365A  SER*     3.0    28.0    +      -       -      +
    366A  LEU*     3.4    22.2    -      -       +      +
    368A  ILE*     1.3    79.8    -      -       +      +
    370A  VAL*     1.3    58.2    +      -       +      +
    372A  GLN*     3.3     6.1    +      -       -      +
    373A  HIS*     2.9    59.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 370 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    366A  LEU*     2.9    32.9    +      -       +      +
    367A  SER*     3.4    11.2    -      -       -      +
    369A  ILE*     1.3    73.4    -      -       +      +
    371A  ALA*     1.3    60.1    +      -       -      +
    373A  HIS*     4.6     4.3    -      -       -      -
    374A  MET*     2.9    49.5    +      -       +      +
    397A  HIS*     3.5    28.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 371 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    367A  SER      3.0     7.4    +      -       -      +
    368A  ILE      3.0     8.9    +      -       -      +
    370A  VAL*     1.3    80.2    -      -       -      +
    372A  GLN*     1.3    60.8    +      -       -      +
    374A  MET*     4.5     3.6    -      -       -      +
    375A  TYR*     3.6    11.3    +      -       -      -
    393A  LEU      5.1     0.2    -      -       -      -
    394A  PHE*     3.0    50.5    -      -       +      +
    397A  HIS*     3.7    17.9    -      -       +      -
    398A  MET*     3.7    18.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 372 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    368A  ILE*     3.0    21.6    +      -       +      +
    369A  ILE*     3.8     9.9    -      -       -      +
    370A  VAL      3.3     0.2    -      -       -      -
    371A  ALA*     1.3    78.8    -      -       -      +
    373A  HIS*     1.3    67.9    +      -       +      +
    375A  TYR*     2.9    47.5    +      -       -      -
    376A  ALA*     4.2     3.8    +      -       -      +
    394A  PHE*     4.3     9.1    -      -       -      -
    398A  MET*     3.7    20.2    -      -       +      +
    609A  VAL*     5.0     5.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 373 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    369A  ILE*     2.9    42.3    +      -       +      +
    370A  VAL*     4.1     4.3    -      -       -      +
    372A  GLN*     1.3    86.6    -      -       +      +
    374A  MET*     1.3    65.7    +      -       +      +
    375A  TYR      3.4     0.7    +      -       -      -
    376A  ALA*     3.7     0.7    +      -       -      -
    377A  MET*     3.5    46.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 374 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    370A  VAL*     2.9    40.1    +      -       +      +
    371A  ALA*     4.5     2.9    -      -       -      +
    372A  GLN      3.5     0.2    -      -       -      -
    373A  HIS*     1.3    78.2    -      -       +      +
    375A  TYR*     1.3    59.8    +      -       -      +
    378A  PRO*     3.7    20.1    -      -       -      +
    379A  PRO*     3.9    16.5    -      -       +      +
    380A  TYR*     4.3    23.1    -      -       +      -
    383A  LEU*     4.4    10.5    -      -       +      +
    390A  GLN*     3.8    12.3    -      -       -      +
    393A  LEU*     3.6    37.0    -      -       +      -
    397A  HIS*     4.5    13.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 375 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    371A  ALA      3.6    11.2    +      -       -      +
    372A  GLN*     2.9    56.0    +      -       -      -
    373A  HIS      3.3     0.4    -      -       -      -
    374A  MET*     1.3    79.4    -      -       -      +
    376A  ALA*     1.3    76.3    +      -       +      +
    378A  PRO*     4.1     1.0    -      -       -      +
    390A  GLN*     3.4    25.9    +      -       -      +
    394A  PHE*     4.0    12.6    -      +       +      -
    512A  ALA*     5.7     0.2    -      -       -      +
    526A  MET*     3.1    18.9    -      -       -      +
    529A  ILE*     4.0    23.7    -      -       +      +
    613A  PHE*     3.5    36.1    -      +       +      -
    617A  MET*     4.0    16.2    -      -       +      +
    622A  TRP*     6.3     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 376 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285A  LEU*     5.6     0.9    -      -       -      +
    372A  GLN      4.6     3.4    -      -       -      +
    373A  HIS*     3.7     2.3    +      -       -      +
    375A  TYR*     1.3   106.4    -      -       +      +
    377A  MET*     1.3    63.1    +      -       +      +
    378A  PRO*     3.7     5.4    -      -       -      +
    510A  SER*     3.0    26.7    +      -       -      +
    511A  VAL      4.4     2.3    +      -       -      -
    512A  ALA*     3.9    13.0    -      -       +      -
    526A  MET*     3.7    18.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 377 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285A  LEU*     4.7     2.0    -      -       -      -
    292A  LEU*     3.4    28.3    -      -       +      +
    373A  HIS*     3.5    45.4    +      -       +      +
    374A  MET      3.9     2.6    -      -       -      +
    375A  TYR      3.4     0.2    -      -       -      -
    376A  ALA*     1.3    87.3    -      -       +      +
    378A  PRO*     1.3    71.0    -      -       -      +
    379A  PRO*     2.9    12.0    -      -       -      +
    509A  ALA*     3.2    33.2    -      -       -      +
    510A  SER*     3.8    10.3    -      -       -      -
    513A  PHE*     6.0     0.7    -      -       -      -
----------------------------------------------------------
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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