Contacts of the helix formed by residues 302 - 328 (chain F) in PDB entry 6M04


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 ASP 302 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300F  ASP*     3.9    12.9    -      -       +      +
    301F  SER*     1.3    79.7    -      -       -      +
    303F  LEU*     1.3    75.9    +      -       +      +
    306F  LYS*     2.8    38.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 303 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186F  TYR*     5.7     1.3    -      -       -      +
    188F  LYS*     5.2    15.7    -      -       +      +
    189F  THR*     4.0    32.5    -      -       +      +
    192F  LYS*     4.4    15.9    -      -       +      +
    300F  ASP*     6.0     0.2    -      -       -      +
    302F  ASP*     1.3    90.8    -      -       +      +
    304F  ILE*     1.3    60.8    +      -       -      +
    306F  LYS*     4.7     0.9    -      -       -      -
    307F  LEU*     2.9    44.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 304 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183F  TRP*     4.0    22.1    +      -       +      +
    189F  THR*     5.8     2.5    -      -       -      -
    192F  LYS*     6.3     3.1    -      -       +      -
    193F  VAL*     6.1     4.7    -      -       +      -
    300F  ASP      5.2     7.2    -      -       -      +
    301F  SER*     5.3     3.4    -      -       -      -
    303F  LEU*     1.3    78.6    -      -       -      +
    305F  TYR*     1.3    61.9    +      -       +      +
    307F  LEU*     3.4     6.3    +      -       -      +
    308F  TYR*     3.0    28.4    +      -       +      +
    417F  ALA*     5.1     8.3    -      -       +      -
    418F  PHE*     4.9    18.6    -      -       +      +
    419F  LEU*     3.7    46.2    -      -       +      +
    422F  MET*     5.7     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 305 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    301F  SER*     3.2    33.1    +      -       -      +
    302F  ASP      3.9     0.6    +      -       -      -
    303F  LEU      3.4     0.2    -      -       -      -
    304F  ILE*     1.3    83.3    -      -       +      +
    306F  LYS*     1.3    66.3    +      -       +      +
    308F  TYR*     3.3    16.3    +      +       -      +
    309F  VAL*     3.0    50.8    +      -       +      +
    387F  LEU      6.1     0.2    -      -       -      -
    388F  PHE*     3.2    37.0    +      +       -      -
    392F  LEU*     5.2     5.8    -      -       -      -
    393F  LYS*     4.4    18.6    -      -       +      -
    418F  PHE*     4.4    35.0    -      +       +      -
----------------------------------------------------------
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Residues in contact with LYS 306 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    302F  ASP*     2.8    24.9    +      -       -      +
    303F  LEU*     4.0     2.0    -      -       -      +
    305F  TYR*     1.3    86.4    -      -       +      +
    307F  LEU*     1.3    62.4    +      -       +      +
    309F  VAL*     3.3    18.3    +      -       +      +
    310F  VAL*     2.9    31.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 307 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182F  PHE*     5.3     4.3    -      -       +      +
    183F  TRP*     3.3    40.4    -      -       +      +
    186F  TYR*     3.3    37.0    -      -       +      +
    189F  THR*     4.5    14.1    -      -       +      +
    303F  LEU*     2.9    34.7    +      -       +      +
    304F  ILE*     3.8     3.6    -      -       -      +
    306F  LYS*     1.3    80.1    -      -       +      +
    308F  TYR*     1.3    60.1    +      -       -      +
    310F  VAL*     3.3    14.3    -      -       +      +
    311F  GLN*     2.9    32.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 308 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24F  TRP*     4.6    14.3    -      +       -      -
    183F  TRP*     3.3    21.0    -      +       +      +
    304F  ILE*     3.0    15.1    +      -       +      +
    305F  TYR*     3.4    19.1    -      +       +      +
    307F  LEU*     1.3    77.3    -      -       -      +
    309F  VAL*     1.3    71.0    +      -       +      +
    311F  GLN*     3.3     8.3    +      -       +      +
    312F  THR*     3.1    27.8    +      -       -      -
    384F  LEU*     3.4    35.7    +      -       +      +
    387F  LEU*     3.3    45.1    -      -       +      +
    388F  PHE*     4.4    13.5    -      +       +      -
    418F  PHE*     4.5    22.4    -      +       +      -
    422F  MET*     6.2     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 309 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305F  TYR*     3.0    48.1    +      -       +      +
    306F  LYS*     3.3    21.1    +      -       +      +
    307F  LEU      3.3     0.2    -      -       -      -
    308F  TYR*     1.3    80.0    -      -       +      +
    310F  VAL*     1.3    60.2    +      -       -      +
    312F  THR*     3.2     8.0    +      -       -      +
    313F  VAL*     2.9    38.8    +      -       +      +
    388F  PHE*     4.3    22.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 310 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182F  PHE*     3.7    30.1    -      -       +      -
    306F  LYS*     2.9    20.3    +      -       +      +
    307F  LEU*     3.3    24.0    -      -       +      +
    309F  VAL*     1.3    74.7    -      -       -      +
    311F  GLN*     1.3    60.2    +      -       -      +
    313F  VAL*     3.7    13.7    -      -       +      -
    314F  ILE*     2.9    37.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 311 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25F  ASP*     5.7     0.9    -      -       -      +
    179F  SER      2.7    30.3    +      -       -      +
    180F  SER*     4.2     7.8    +      -       -      +
    182F  PHE*     3.2    19.3    -      -       +      +
    183F  TRP*     3.3    45.7    -      -       +      +
    307F  LEU      2.9    17.6    +      -       -      +
    308F  TYR*     3.3    12.1    +      -       +      +
    310F  VAL*     1.3    76.6    -      -       -      +
    312F  THR*     1.3    56.4    +      -       -      +
    314F  ILE*     3.3     6.4    -      -       -      +
    315F  LYS*     3.0    28.1    +      -       -      +
    384F  LEU*     6.1     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 312 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    308F  TYR*     3.1    18.9    +      -       -      -
    309F  VAL*     3.6    10.0    -      -       -      -
    311F  GLN*     1.3    76.8    -      -       -      +
    313F  VAL*     1.3    62.3    +      -       +      +
    315F  LYS*     3.2    13.6    -      -       -      +
    316F  THR*     2.9    35.4    +      -       -      +
    380F  CYS*     5.8     0.2    -      -       -      -
    381F  LEU*     6.2     0.2    -      -       -      -
    384F  LEU*     3.3    49.6    +      -       +      +
    385F  PHE*     5.0     4.7    -      -       +      +
    388F  PHE*     6.0     3.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 313 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309F  VAL*     2.9    33.5    +      -       +      +
    310F  VAL*     3.5    20.2    -      -       +      +
    312F  THR*     1.3    83.3    -      -       +      +
    314F  ILE*     1.3    62.3    +      -       -      +
    316F  THR*     3.9     7.8    -      -       -      +
    317F  ALA*     2.9    32.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 314 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175F  ILE*     6.1     4.7    -      -       +      -
    176F  LEU*     5.4     0.7    -      -       -      +
    179F  SER*     3.7    35.3    +      -       -      +
    182F  PHE*     3.8    27.6    -      -       +      -
    310F  VAL*     2.9    25.4    +      -       +      +
    311F  GLN*     3.3    14.1    -      -       -      +
    313F  VAL*     1.3    75.5    -      -       +      +
    315F  LYS*     1.3    67.9    +      -       -      +
    317F  ALA*     4.5     4.4    -      -       +      +
    318F  LYS*     3.7    18.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 315 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176F  LEU*     5.6     5.3    -      -       -      +
    179F  SER*     5.9     0.4    -      -       -      -
    311F  GLN      3.0    14.8    +      -       -      +
    312F  THR*     3.2    16.3    -      -       -      +
    314F  ILE*     1.3    78.6    -      -       -      +
    316F  THR*     1.3    84.7    +      -       -      +
    318F  LYS*     3.3     5.1    +      -       -      +
    319F  PHE*     2.9    40.4    +      -       +      +
    376F  TYR*     4.4    22.9    -      -       +      +
    377F  GLY*     4.2     7.9    +      -       -      -
    380F  CYS*     3.5    44.4    -      -       +      -
    381F  LEU*     3.4    36.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 316 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312F  THR*     2.9    21.4    +      -       -      +
    313F  VAL*     3.1     9.4    +      -       -      +
    315F  LYS*     1.3   102.0    +      -       -      +
    317F  ALA*     1.3    57.7    +      -       -      +
    319F  PHE*     3.6     4.0    -      -       +      +
    320F  ILE*     2.9    43.3    +      -       +      +
    381F  LEU*     5.3     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 317 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313F  VAL      2.9    16.6    +      -       -      +
    314F  ILE*     5.0     4.0    -      -       +      -
    316F  THR*     1.3    77.5    -      -       -      +
    318F  LYS*     1.3    57.6    +      -       -      +
    320F  ILE*     4.1     2.0    -      -       -      +
    321F  PHE*     2.9    33.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 318 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172F  HIS*     4.2    19.7    -      -       +      +
    175F  ILE*     5.2    13.2    -      -       +      -
    176F  LEU*     5.3     6.7    -      -       +      -
    314F  ILE*     3.7    18.0    +      -       +      +
    315F  LYS*     3.3     3.4    +      -       -      +
    317F  ALA*     1.3    78.4    -      -       -      +
    319F  PHE*     1.3    58.7    +      -       -      +
    321F  PHE*     4.2     6.3    -      -       -      -
    322F  ILE*     3.0    37.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 319 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172F  HIS*     5.6     0.9    -      -       -      -
    315F  LYS*     2.9    29.2    +      -       +      +
    316F  THR*     3.6     9.6    -      -       +      +
    318F  LYS*     1.3    77.6    -      -       -      +
    320F  ILE*     1.3    83.0    +      -       +      +
    322F  ILE*     3.7     6.0    -      -       -      +
    323F  LEU*     2.9    58.9    +      -       +      +
    373F  ILE*     3.3    35.7    -      -       +      -
    374F  CYS*     4.3     6.1    -      -       -      -
    376F  TYR*     4.8     7.4    -      +       +      -
    377F  GLY*     3.5    33.4    -      -       -      -
    378F  PHE      4.5     1.1    -      -       -      -
    381F  LEU*     5.3     9.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 320 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    316F  THR*     2.9    28.2    +      -       +      +
    317F  ALA*     4.3     2.2    -      -       -      +
    319F  PHE*     1.3   100.5    -      -       +      +
    321F  PHE*     1.3    62.7    +      -       -      +
    323F  LEU*     3.9     8.9    -      -       +      +
    324F  CYS*     3.0    28.4    +      -       +      +
    381F  LEU*     6.1     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 321 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    317F  ALA      2.9    22.7    +      -       -      +
    318F  LYS*     3.7     6.1    -      -       -      +
    320F  ILE*     1.3    78.2    -      -       -      +
    322F  ILE*     1.3    74.0    +      -       +      +
    324F  CYS*     4.0     2.6    -      -       -      +
    325F  TYR*     3.0    51.3    +      +       -      +
----------------------------------------------------------
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Residues in contact with ILE 322 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    168F  LEU*     5.8     6.5    -      -       +      -
    172F  HIS*     3.3    52.9    -      -       +      +
    318F  LYS*     3.0    22.4    +      -       +      +
    319F  PHE*     3.7     5.2    -      -       -      +
    321F  PHE*     1.3    90.8    -      -       +      +
    323F  LEU*     1.3    55.0    +      -       -      +
    325F  TYR*     4.0     9.0    -      -       +      -
    326F  THR*     2.4    45.9    +      -       +      +
    369F  TYR*     4.0    16.2    -      -       +      +
    370F  ILE*     6.2     0.7    -      -       +      -
    373F  ILE*     3.7    25.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 323 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    319F  PHE*     2.9    53.1    +      -       +      +
    320F  ILE*     3.9    10.3    -      -       +      +
    321F  PHE      3.2     0.2    -      -       -      -
    322F  ILE*     1.3    78.4    -      -       +      +
    324F  CYS*     1.3    59.8    +      -       -      +
    326F  THR*     3.5     4.9    +      -       -      -
    327F  ALA*     2.7    38.1    +      -       +      +
    370F  ILE*     5.6    14.4    -      -       +      +
    373F  ILE*     5.5     4.3    -      -       +      -
    374F  CYS*     4.8    17.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 324 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    320F  ILE*     3.0    21.1    +      -       +      +
    321F  PHE*     4.1     2.2    -      -       -      +
    323F  LEU*     1.3    79.8    -      -       +      +
    325F  TYR*     1.3    57.2    +      -       -      +
    327F  ALA*     3.5     5.9    -      -       -      +
    328F  ASN*     2.9    45.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 325 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    160F  TRP*     5.0     6.8    +      -       -      -
    165F  PHE*     5.7     2.0    -      +       -      -
    168F  LEU*     3.7    41.0    -      -       +      +
    321F  PHE*     3.0    39.7    +      +       +      +
    322F  ILE*     3.8     9.4    -      -       +      +
    324F  CYS*     1.3    76.7    -      -       -      +
    326F  THR*     1.3    68.1    +      -       +      +
    328F  ASN*     2.8    21.7    -      -       -      +
    329F  PHE*     3.0    46.0    +      +       -      -
----------------------------------------------------------
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Residues in contact with THR 326 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165F  PHE*     3.8    32.1    -      -       +      -
    168F  LEU*     5.2     4.5    -      -       +      -
    322F  ILE*     2.4    39.5    +      -       +      +
    323F  LEU*     3.5     2.8    +      -       -      -
    325F  TYR*     1.3    81.7    -      -       +      +
    327F  ALA*     1.3    57.1    +      -       -      +
    329F  PHE*     3.1    10.2    +      -       -      +
    330F  VAL*     2.9    30.8    +      -       -      +
    366F  LEU*     4.9     5.2    -      -       -      +
    369F  TYR*     4.4    13.2    -      -       +      +
    370F  ILE*     3.2    26.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 327 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    323F  LEU*     2.7    32.4    +      -       +      +
    324F  CYS*     3.5     7.6    -      -       -      +
    325F  TYR      3.2     0.4    -      -       -      -
    326F  THR*     1.3    76.8    +      -       -      +
    328F  ASN*     1.3    58.6    +      -       -      +
    330F  VAL*     3.1    30.1    +      -       -      +
    331F  ASN      4.6     1.0    +      -       -      -
    370F  ILE*     6.0     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 328 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324F  CYS*     2.9    25.0    +      -       -      +
    325F  TYR*     2.8    30.5    -      -       -      +
    327F  ALA*     1.3    76.1    -      -       -      +
    329F  PHE*     1.3    70.5    +      -       -      +
    330F  VAL      3.5     0.7    -      -       -      -
    331F  ASN      5.3     0.9    -      -       -      -
    332F  ALA*     4.6     8.3    +      -       -      +
----------------------------------------------------------
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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