Contacts of the helix formed by residues 393 - 416 (chain A) in PDB entry 5L26


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 LEU 393 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    170A  GLU*     4.3    20.4    -      -       +      +
    173A  LEU*     4.5    14.8    -      -       +      -
    174A  PHE*     3.8    35.2    -      -       +      -
    177A  MET*     3.8     7.4    -      -       -      -
    221A  VAL*     5.1     6.1    -      -       +      -
    389A  ASP      3.2    16.8    +      -       -      +
    390A  VAL      3.3     5.3    +      -       -      +
    392A  ARG*     1.3   101.2    -      -       +      +
    394A  GLY*     1.3    63.0    +      -       -      +
    395A  ILE      3.5     1.3    -      -       -      -
    396A  LYS*     4.1    32.5    -      -       +      +
    397A  ALA*     3.0    26.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 394 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    177A  MET*     3.9     7.6    -      -       -      -
    181A  LEU*     4.4     0.9    -      -       -      +
    372A  ILE*     3.6    30.3    -      -       -      +
    390A  VAL      3.3    10.5    +      -       -      -
    391A  ALA      3.6     4.5    +      -       -      -
    392A  ARG      3.1     4.0    -      -       -      -
    393A  LEU*     1.3    78.9    -      -       -      +
    395A  ILE*     1.3    61.7    +      -       -      +
    397A  ALA*     3.4     2.4    +      -       -      +
    398A  VAL*     3.2    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 395 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    369A  LEU*     5.6     9.4    -      -       +      -
    372A  ILE*     3.8    16.1    -      -       +      +
    391A  ALA      5.1     0.4    +      -       -      -
    392A  ARG      4.6     4.2    +      -       -      +
    394A  GLY*     1.3    71.6    -      -       -      +
    396A  LYS*     1.3    69.6    +      -       +      +
    398A  VAL*     3.2     6.6    +      -       +      +
    399A  VAL*     3.1    30.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 396 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  LEU      5.8     4.5    -      -       -      +
     22A  THR*     4.1    23.0    -      -       +      +
    174A  PHE*     3.4    23.6    -      -       +      -
    220A  LEU*     3.7     8.0    -      -       +      +
    221A  VAL*     5.1     6.3    -      -       +      -
    392A  ARG*     5.1     8.9    -      -       -      +
    393A  LEU*     3.6    31.7    +      -       +      +
    394A  GLY      3.4     0.4    -      -       -      -
    395A  ILE*     1.3    79.5    -      -       +      +
    397A  ALA*     1.3    57.7    +      -       -      +
    399A  VAL*     3.3    11.5    +      -       -      +
    400A  ALA*     2.9    22.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 397 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174A  PHE*     3.3    16.4    -      -       +      -
    177A  MET*     3.9    24.0    -      -       +      -
    178A  SER*     4.1     7.7    +      -       -      +
    181A  LEU*     3.4    24.0    -      -       +      +
    393A  LEU      3.0    19.8    +      -       -      +
    394A  GLY      3.7     2.0    -      -       -      +
    396A  LYS*     1.3    74.8    -      -       -      +
    398A  VAL*     1.3    61.7    +      -       -      +
    400A  ALA*     3.2     3.9    +      -       -      +
    401A  GLY*     2.8    24.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 398 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    181A  LEU*     3.6    15.0    -      -       +      -
    328A  VAL*     4.7    12.3    -      -       +      -
    367A  ALA*     3.8    23.6    -      -       -      +
    368A  ASN*     3.4    27.8    -      -       -      +
    369A  LEU*     5.0     6.3    -      -       +      -
    372A  ILE*     3.5    18.2    -      -       +      -
    394A  GLY      3.2    16.3    +      -       -      +
    395A  ILE*     3.2     9.2    +      -       +      +
    397A  ALA*     1.3    72.0    -      -       -      +
    399A  VAL*     1.3    55.0    +      -       +      +
    401A  GLY*     3.2     1.6    +      -       -      +
    402A  SER*     2.7    45.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 399 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16A  ILE*     5.6     1.3    -      -       +      -
     20A  LEU*     4.2    22.7    -      -       +      -
    220A  LEU*     4.8     5.8    -      -       +      -
    395A  ILE*     3.1    24.8    +      -       +      +
    396A  LYS*     3.4    10.1    -      -       -      +
    398A  VAL*     1.3    78.6    -      -       +      +
    400A  ALA*     1.3    55.6    +      -       -      +
    402A  SER*     3.2     7.4    +      -       -      -
    403A  LEU*     2.8    51.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 400 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174A  PHE*     3.9     3.8    -      -       +      -
    178A  SER*     3.4    26.7    -      -       -      +
    213A  GLY*     5.4     1.2    -      -       -      +
    216A  PHE*     3.8    20.2    -      -       +      +
    220A  LEU*     3.7    20.2    -      -       +      +
    396A  LYS      2.9    14.3    +      -       -      +
    397A  ALA      3.3     8.7    -      -       -      +
    399A  VAL*     1.3    77.4    -      -       -      +
    401A  GLY*     1.3    56.9    +      -       -      +
    403A  LEU*     4.7     0.9    -      -       -      -
    404A  SER*     3.1    28.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 401 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178A  SER      4.4     1.7    +      -       -      -
    181A  LEU*     4.2     1.3    -      -       -      -
    182A  ALA*     3.8    27.3    -      -       -      +
    367A  ALA*     3.8     6.1    -      -       -      -
    397A  ALA      2.8    14.5    +      -       -      -
    398A  VAL      3.6     3.4    -      -       -      -
    400A  ALA*     1.3    73.3    -      -       -      +
    402A  SER*     1.3    60.2    +      -       -      +
    404A  SER*     3.4     1.7    +      -       -      -
    405A  ASN*     2.9    39.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 402 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    327A  LYS*     4.4     4.4    +      -       -      +
    328A  VAL*     4.1    19.1    -      -       -      +
    367A  ALA*     3.8     9.8    -      -       -      +
    398A  VAL*     2.7    33.9    +      -       -      +
    399A  VAL*     3.5     8.2    -      -       -      -
    401A  GLY*     1.3    73.6    -      -       -      +
    403A  LEU*     1.3    59.8    +      -       -      +
    405A  ASN*     3.3     8.9    +      -       -      +
    406A  LEU*     2.9    41.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 403 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  LEU*     3.8    32.6    -      -       +      +
     16A  ILE*     4.7    17.5    -      -       +      -
     17A  ALA*     4.0    21.3    -      -       +      +
     20A  LEU*     5.5     0.2    -      -       +      -
    216A  PHE*     3.3    46.9    -      -       +      -
    220A  LEU*     5.1     3.8    -      -       +      -
    399A  VAL*     2.8    40.1    +      -       +      +
    400A  ALA*     4.0     1.6    -      -       -      +
    402A  SER*     1.3    74.6    -      -       -      +
    404A  SER*     1.3    57.5    +      -       -      +
    406A  LEU*     3.8    10.1    -      -       +      +
    407A  MET*     2.9    24.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 404 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  GLN*     3.6     0.9    -      -       -      +
    182A  ALA*     3.5    18.0    -      -       -      +
    208A  MET      4.7     0.3    +      -       -      -
    209A  ALA*     4.1     5.9    +      -       -      -
    212A  GLY*     3.0    34.7    -      -       -      -
    213A  GLY*     3.3     3.0    +      -       -      -
    216A  PHE*     3.6    10.0    -      -       -      -
    400A  ALA      3.1    19.9    +      -       -      -
    401A  GLY      3.6     5.2    -      -       -      -
    402A  SER      3.2     0.2    -      -       -      -
    403A  LEU*     1.3    75.0    -      -       -      +
    405A  ASN*     1.3    65.1    +      -       -      +
    407A  MET*     3.3     3.9    +      -       -      +
    408A  SER*     3.2    25.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 405 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    181A  LEU      4.1     2.2    +      -       -      -
    182A  ALA      3.1    18.0    -      -       -      +
    327A  LYS*     3.4    28.0    -      -       -      +
    361A  PHE      3.7    12.6    -      -       -      +
    362A  ALA*     3.6    19.2    -      -       -      +
    364A  CYS      3.0    20.4    -      -       -      +
    365A  GLY*     3.7    10.7    -      -       -      -
    367A  ALA*     3.9     3.2    -      -       -      +
    401A  GLY      2.9    21.4    +      -       -      +
    402A  SER*     3.7     4.2    -      -       -      +
    404A  SER*     1.3    76.2    +      -       -      +
    406A  LEU*     1.3    63.7    +      -       +      +
    408A  SER*     3.4     5.5    +      -       -      -
    409A  ALA*     3.1    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 406 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  LEU*     3.8    27.4    -      -       +      -
    306A  LEU*     3.7    30.1    -      -       +      -
    310A  ILE*     4.1    19.5    -      -       +      +
    324A  ILE*     4.0    34.1    -      -       +      -
    362A  ALA*     4.3     9.4    -      -       +      +
    402A  SER*     2.9    29.6    +      -       -      +
    403A  LEU*     3.8    10.8    -      -       +      +
    405A  ASN*     1.3    75.3    -      -       +      +
    407A  MET*     1.3    60.6    +      -       -      +
    409A  ALA*     3.1     6.2    +      -       -      +
    410A  VAL*     2.9    31.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 407 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  MET*     3.8    38.8    -      -       -      +
     13A  LEU*     3.6    18.8    -      -       +      +
     14A  ILE*     4.0    10.5    -      -       +      -
     36A  PHE*     3.8    22.9    -      -       +      -
     39A  GLN*     3.4    28.3    -      -       -      +
    215A  LEU*     4.6     2.0    -      -       +      -
    216A  PHE*     3.8    26.0    -      -       +      -
    403A  LEU      2.9    17.8    +      -       -      +
    404A  SER      3.5     5.6    -      -       -      +
    406A  LEU*     1.3    77.0    -      -       -      +
    408A  SER*     1.3    61.2    +      -       -      +
    410A  VAL*     3.2     5.4    +      -       -      +
    411A  ILE*     3.1    31.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 408 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39A  GLN*     2.8    21.0    +      -       -      -
    205A  ALA*     5.2     4.1    +      -       -      -
    208A  MET*     3.6    32.5    +      -       -      +
    209A  ALA*     5.6     0.5    -      -       -      -
    361A  PHE*     4.1    17.8    -      -       -      -
    404A  SER*     3.2     9.1    +      -       -      -
    405A  ASN*     3.8     9.3    -      -       -      -
    406A  LEU      3.3     0.2    -      -       -      -
    407A  MET*     1.3    78.1    -      -       -      +
    409A  ALA*     1.3    57.1    +      -       -      +
    411A  ILE*     3.4    10.5    +      -       -      +
    412A  ALA*     2.8    27.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 409 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    310A  ILE*     4.6     4.9    -      -       +      -
    358A  ILE*     3.4    40.7    -      -       +      +
    361A  PHE*     3.7     9.6    -      -       -      +
    362A  ALA*     3.8    14.4    -      -       +      +
    405A  ASN      3.1    14.4    +      -       -      +
    406A  LEU*     3.1    11.2    +      -       -      +
    408A  SER*     1.3    76.0    -      -       -      +
    410A  VAL*     1.3    59.1    +      -       -      +
    412A  ALA*     3.3     4.2    -      -       -      +
    413A  GLY      3.0    22.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 410 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  SER*     3.3    36.5    +      -       -      +
      9A  GLY*     4.5     6.1    -      -       -      -
     10A  MET*     3.6    20.2    -      -       +      +
     13A  LEU*     3.7    15.9    -      -       +      -
    310A  ILE*     3.6    39.5    -      -       +      +
    406A  LEU      2.9    19.9    +      -       -      +
    407A  MET      3.2     6.7    +      -       -      +
    409A  ALA*     1.3    73.8    -      -       -      +
    411A  ILE*     1.3    64.3    +      -       -      +
    413A  GLY*     3.4     2.1    +      -       -      -
    414A  LEU*     3.0    22.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 411 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  MET*     4.1    18.2    -      -       +      -
     36A  PHE*     5.4     1.6    -      -       +      +
     39A  GLN*     3.5    42.2    -      -       +      +
     40A  VAL*     3.7    16.2    -      -       +      +
     43A  GLY*     3.8    22.7    -      -       -      -
     44A  ALA      4.3     0.2    -      -       -      +
     47A  LEU*     4.2     0.8    -      -       +      +
    208A  MET*     4.9     3.1    -      -       +      -
    407A  MET*     3.1    20.4    +      -       +      +
    408A  SER*     3.6     9.2    -      -       -      +
    410A  VAL*     1.3    75.1    -      -       -      +
    412A  ALA*     1.3    63.6    +      -       -      +
    414A  LEU*     3.3     5.8    +      -       -      +
    415A  PHE*     3.0    54.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 412 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47A  LEU*     3.8    11.7    -      -       +      -
    208A  MET*     6.2     0.6    -      -       -      +
    357A  ALA*     4.3    10.5    -      -       +      +
    361A  PHE*     3.5    35.9    -      -       +      -
    408A  SER      2.8    14.8    +      -       -      +
    409A  ALA*     3.3    10.8    -      -       -      +
    411A  ILE*     1.3    77.0    -      -       -      +
    413A  GLY*     1.3    52.8    +      -       -      +
    414A  LEU      3.1     0.3    +      -       -      -
    416A  THR*     2.4    43.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 413 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2A  VAL*     4.0     9.9    -      -       -      +
      6A  SER*     4.8     0.9    -      -       -      -
    310A  ILE      5.3     0.9    -      -       -      -
    354A  THR*     3.6    11.4    +      -       -      -
    358A  ILE*     3.6    25.7    -      -       -      +
    409A  ALA      3.0     8.5    +      -       -      -
    410A  VAL      3.4     2.9    +      -       -      -
    412A  ALA*     1.3    78.4    -      -       -      +
    414A  LEU*     1.3    60.7    +      -       -      +
    416A  THR*     3.2     8.3    +      -       -      -
    417A  GLY*     3.2    17.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 414 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      2A  VAL*     4.1     8.0    -      -       +      +
      3A  VAL*     3.7    39.7    -      -       +      +
      6A  SER*     3.5    23.9    +      -       -      +
      7A  LEU*     5.9     3.8    -      -       +      -
     10A  MET*     4.0    20.9    -      -       +      -
     40A  VAL*     5.3     1.3    -      -       +      -
    410A  VAL      3.0    16.9    +      -       -      +
    411A  ILE      3.5     4.5    -      -       -      +
    412A  ALA      3.1     0.2    -      -       -      -
    413A  GLY*     1.3    77.0    -      -       -      +
    415A  PHE*     1.3    88.9    +      -       +      +
    417A  GLY*     3.1    18.4    +      -       -      +
    418A  LEU*     5.8     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 415 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40A  VAL*     3.9    15.0    -      -       +      -
     43A  GLY      4.3     0.2    -      -       -      -
     44A  ALA*     3.5    33.0    -      -       +      -
     47A  LEU*     3.8    33.5    -      -       +      +
     48A  TYR*     3.4    37.5    -      +       +      -
    411A  ILE*     3.0    47.0    +      -       +      +
    414A  LEU*     1.3   100.2    -      -       +      +
    416A  THR*     1.3    59.6    +      -       -      +
    417A  GLY      3.0     5.3    +      -       -      -
    418A  LEU*     3.9    18.0    -      -       -      +
    420A  GLY*     5.5     1.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 416 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47A  LEU*     4.1    21.1    -      -       +      -
    201A  TYR*     4.1    13.2    -      -       +      +
    353A  ASP*     5.3     1.2    -      -       -      +
    354A  THR*     3.8    20.0    +      -       -      -
    357A  ALA*     3.8    27.6    -      -       +      +
    412A  ALA*     2.4    39.2    +      -       +      +
    413A  GLY*     3.2    10.2    +      -       -      -
    415A  PHE*     1.3    71.9    -      -       -      +
    417A  GLY*     1.3    54.2    +      -       -      +
    418A  LEU      3.0    19.1    +      -       -      +
    420A  GLY*     6.2     1.1    -      -       -      +
    421A  ALA      6.0     5.4    -      -       -      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


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

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il