Contacts of the helix formed by residues 434 - 461 (chain r) in PDB entry 6QX2


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with THR 434 (chain r).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    431r  ARG*     3.4    22.2    +      -       -      +
    432r  ARG      3.4     0.6    -      -       -      -
    433r  LEU*     1.3    81.4    -      -       -      +
    435r  GLY*     1.3    63.3    -      -       -      +
    436r  LEU*     4.2     1.2    +      -       -      +
    437r  GLU*     3.5    13.2    +      -       -      +
    438r  ARG*     3.2    21.7    +      -       -      +
    398t  ILE*     3.7    18.2    -      -       +      +
    401t  SER      3.3    11.2    -      -       -      +
    402t  ASP      3.7     8.2    +      -       -      -
    403t  THR*     3.7    18.6    -      -       -      +
    404t  ASP*     3.4    18.1    +      -       -      +
    407t  ALA*     4.2    12.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 435 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    434r  THR*     1.3    67.5    -      -       -      +
    436r  LEU*     1.3    63.3    +      -       -      -
    437r  GLU      3.4     0.5    +      -       -      -
    438r  ARG*     3.4    34.2    +      -       -      +
    439r  ASP*     3.4    19.9    +      -       -      +
    401t  SER      3.0     8.4    +      -       -      -
    402t  ASP*     2.9    22.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 436 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    434r  THR*     4.2     2.0    +      -       -      +
    435r  GLY*     1.3    73.2    -      -       -      +
    437r  GLU*     1.3    57.5    +      -       +      +
    439r  ASP*     3.4    14.8    +      -       +      +
    440r  LYS*     3.0    33.0    +      -       +      +
    402t  ASP*     2.8    20.1    +      -       +      +
    403t  THR*     4.3    19.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 437 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    431r  ARG*     3.7    21.6    -      -       +      +
    432r  ARG*     3.5    43.8    +      -       -      +
    434r  THR*     3.7    13.6    +      -       -      +
    435r  GLY      3.2     0.8    -      -       -      -
    436r  LEU*     1.3    78.4    -      -       +      +
    438r  ARG*     1.3    62.5    +      -       -      +
    440r  LYS*     2.6    36.0    +      -       -      +
    441r  ILE*     3.2    27.8    +      -       -      +
    404t  ASP*     4.8     6.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 438 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    388r  LEU*     3.8    41.9    -      -       +      +
    432r  ARG      4.4     5.6    -      -       -      +
    433r  LEU*     3.0    26.7    +      -       -      +
    434r  THR      3.2    21.9    +      -       -      +
    435r  GLY*     3.4    22.0    +      -       -      +
    436r  LEU      3.4     0.2    -      -       -      -
    437r  GLU*     1.3    76.1    -      -       -      +
    439r  ASP*     1.3    63.8    +      -       -      +
    441r  ILE*     3.5     5.2    +      -       -      +
    442r  GLU*     3.3    21.3    +      -       -      +
    399t  ARG*     3.5    23.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 439 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    435r  GLY      3.4    16.1    -      -       -      +
    436r  LEU*     3.4    17.7    +      -       +      +
    437r  GLU      3.3     0.4    -      -       -      -
    438r  ARG*     1.3    77.6    +      -       -      +
    440r  LYS*     1.3    54.4    +      -       -      +
    442r  GLU*     3.1     6.8    +      -       -      +
    443r  ALA*     2.9    36.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 440 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    436r  LEU*     3.0    21.3    +      -       +      +
    437r  GLU*     2.6    43.0    +      -       -      +
    439r  ASP*     1.3    76.1    -      -       -      +
    441r  ILE*     1.3    55.8    +      -       +      +
    443r  ALA*     3.6     7.8    -      -       -      +
    444r  GLU*     3.1    28.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 441 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    377r  ARG*     6.0     0.2    -      -       -      +
    381r  LEU*     4.0    25.5    -      -       +      +
    384r  LEU*     4.2    23.3    -      -       +      -
    385r  ARG*     4.1    24.2    -      -       +      -
    388r  LEU*     3.5    28.7    -      -       +      -
    428r  MET*     5.2     1.3    -      -       -      -
    432r  ARG*     4.6    22.2    -      -       +      +
    437r  GLU*     3.2    22.8    +      -       -      +
    438r  ARG*     3.7     8.1    -      -       -      +
    439r  ASP      3.2     0.4    -      -       -      -
    440r  LYS*     1.3    74.6    -      -       +      +
    442r  GLU*     1.3    60.4    +      -       -      +
    444r  GLU*     3.5    11.3    +      -       -      +
    445r  TYR*     3.0    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 442 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    385r  ARG*     3.3    39.2    +      -       +      +
    438r  ARG      3.3     9.2    +      -       -      +
    439r  ASP*     3.1     9.2    +      -       -      +
    441r  ILE*     1.3    78.4    -      -       +      +
    443r  ALA*     1.3    63.5    +      -       -      +
    445r  TYR*     3.3     4.2    +      -       +      +
    446r  ASN*     2.8    58.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 443 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    439r  ASP      2.9    17.5    +      -       -      +
    440r  LYS*     3.6    10.1    -      -       -      +
    442r  GLU*     1.3    76.5    -      -       -      +
    444r  GLU*     1.3    61.6    +      -       -      +
    446r  ASN*     3.3     5.7    +      -       -      +
    447r  GLU*     3.2    23.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 444 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    377r  ARG*     2.9    46.5    +      -       -      +
    381r  LEU*     3.7    12.3    -      -       +      +
    440r  LYS      3.1    16.4    +      -       -      +
    441r  ILE*     3.7     7.2    -      -       -      +
    443r  ALA*     1.3    76.5    -      -       -      +
    445r  TYR*     1.3    58.1    +      -       -      +
    447r  GLU*     3.6     5.9    +      -       -      +
    448r  LEU*     3.1    33.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 445 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    378r  ALA*     3.6    29.4    -      -       +      -
    381r  LEU*     3.6    28.2    -      -       +      +
    382r  GLU*     2.8    33.5    +      -       +      +
    385r  ARG*     3.7    41.7    +      -       -      -
    441r  ILE      3.0    17.7    +      -       -      +
    442r  GLU*     3.6     6.3    -      -       -      +
    443r  ALA      3.2     0.2    -      -       -      -
    444r  GLU*     1.3    76.5    -      -       -      +
    446r  ASN*     1.3    68.1    +      -       -      +
    448r  LEU*     3.4     5.0    -      -       +      +
    449r  LEU*     3.2    55.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 446 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    385r  ARG*     5.6     0.2    +      -       -      -
    442r  GLU*     2.8    53.9    +      -       -      +
    443r  ALA*     3.9     5.3    -      -       -      +
    445r  TYR*     1.3    80.2    -      -       -      +
    447r  GLU*     1.3    64.3    +      -       -      +
    449r  LEU*     3.2    21.5    +      -       -      +
    450r  ASN*     3.3    20.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 447 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    443r  ALA      3.2    15.7    +      -       -      +
    444r  GLU*     3.9     6.7    -      -       -      +
    446r  ASN*     1.3    74.6    -      -       -      +
    448r  LEU*     1.3    56.7    -      -       -      +
    450r  ASN*     3.3    12.9    +      -       -      +
    451r  TYR*     2.9    29.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 448 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    374r  ALA*     3.5    37.9    -      -       +      +
    377r  ARG*     3.4    31.9    -      -       +      -
    378r  ALA*     3.7    19.7    -      -       +      +
    381r  LEU*     3.8    17.3    -      -       +      -
    444r  GLU*     3.1    22.0    +      -       +      +
    445r  TYR*     3.4     7.6    -      -       -      +
    446r  ASN      3.2     0.2    -      -       -      -
    447r  GLU*     1.3    76.3    -      -       -      +
    449r  LEU*     1.3    51.6    +      -       -      +
    451r  TYR*     3.3    13.3    +      -       +      +
    452r  ILE*     2.8    44.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 449 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    378r  ALA*     5.1     3.4    -      -       +      -
    382r  GLU*     5.2     1.6    -      -       -      +
    445r  TYR*     3.2    57.9    +      -       +      +
    446r  ASN*     3.2    16.3    +      -       -      +
    448r  LEU*     1.3    74.0    -      -       -      +
    450r  ASN*     1.3    66.8    +      -       -      +
    452r  ILE*     3.4    17.1    +      -       +      +
    453r  SER*     3.2    22.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 450 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    446r  ASN      3.3    14.4    +      -       -      +
    447r  GLU*     3.3    11.9    +      -       -      +
    449r  LEU*     1.3    77.3    -      -       -      +
    451r  TYR*     1.3    57.6    +      -       -      +
    453r  SER*     3.2     9.7    +      -       -      -
    454r  GLU*     3.0    42.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 451 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    370r  ASN*     3.2    34.5    +      -       +      +
    374r  ALA*     4.2    19.1    -      -       +      -
    447r  GLU      2.9    14.3    +      -       -      +
    448r  LEU*     3.5    15.5    -      -       +      +
    450r  ASN*     1.3    73.1    -      -       -      +
    452r  ILE*     1.3    63.4    +      -       -      +
    454r  GLU*     3.2    21.1    +      -       +      +
    455r  LEU*     2.9    62.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 452 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    371r  LEU*     3.7    15.7    -      -       +      +
    374r  ALA*     3.8    29.6    -      -       +      +
    375r  LYS*     4.2    16.8    -      -       +      -
    378r  ALA*     4.0    27.8    -      -       +      -
    448r  LEU*     2.8    28.7    +      -       +      +
    449r  LEU*     3.8    14.6    -      -       +      +
    450r  ASN      3.3     0.4    -      -       -      -
    451r  TYR*     1.3    71.4    -      -       -      +
    453r  SER*     1.3    55.6    +      -       -      +
    455r  LEU*     3.4     4.9    +      -       -      +
    456r  GLU*     3.1    49.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 453 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    449r  LEU      3.2    12.5    +      -       -      -
    450r  ASN*     3.2    11.5    +      -       -      -
    452r  ILE*     1.3    74.9    -      -       -      +
    454r  GLU*     1.3    58.4    +      -       -      +
    456r  GLU*     3.3    14.3    +      -       -      +
    457r  THR*     2.8    35.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 454 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    450r  ASN*     3.0    33.0    +      -       +      +
    451r  TYR*     3.5    24.9    -      -       +      +
    453r  SER*     1.3    74.6    +      -       -      +
    455r  LEU*     1.3    62.6    +      -       +      +
    457r  THR*     3.5    10.6    +      -       -      -
    458r  ILE*     3.4    29.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 455 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    367r  THR*     3.6    29.4    -      -       +      +
    370r  ASN*     3.8     8.3    -      -       +      +
    371r  LEU*     3.5    42.2    -      -       +      +
    374r  ALA*     4.6     1.3    -      -       +      -
    451r  TYR*     2.9    67.3    +      -       +      +
    452r  ILE*     3.6     6.3    -      -       -      +
    454r  GLU*     1.3    74.6    -      -       +      +
    456r  GLU*     1.3    63.6    +      -       -      +
    458r  ILE*     3.2    17.6    +      -       +      +
    459r  LEU*     3.2    20.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 456 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    371r  LEU*     4.0    16.2    -      -       +      -
    375r  LYS*     3.6    22.8    +      -       -      +
    452r  ILE*     3.1    35.9    +      -       -      +
    453r  SER*     3.3    14.2    +      -       -      +
    455r  LEU*     1.3    73.0    -      -       -      +
    457r  THR*     1.3    55.9    +      -       -      +
    459r  LEU*     3.3     7.9    +      -       +      +
    460r  ALA*     2.9    36.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 457 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    453r  SER*     2.8    19.8    +      -       -      -
    454r  GLU*     3.5    11.3    +      -       -      -
    456r  GLU*     1.3    76.7    -      -       -      +
    458r  ILE*     1.3    60.7    +      -       -      +
    460r  ALA*     3.5     6.9    +      -       -      +
    461r  ASP*     3.2    24.5    +      -       +      +
    464r  VAL*     4.1    19.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 458 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    367r  THR*     4.0    18.6    -      -       +      +
    454r  GLU*     3.4    18.8    +      -       +      +
    455r  LEU*     3.2    21.4    +      -       +      +
    457r  THR*     1.3    76.3    -      -       -      +
    459r  LEU*     1.3    63.7    +      -       +      +
    461r  ASP      3.3    18.0    -      -       -      +
    462r  GLU*     4.9     0.2    -      -       -      -
    464r  VAL*     3.7    20.9    -      -       +      -
    465r  LEU*     3.6    43.4    -      -       +      +
    468r  LEU*     3.8    24.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 459 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    364r  ARG*     4.1    22.2    -      -       +      +
    367r  THR*     3.7    21.5    -      -       +      -
    368r  GLN*     3.6    37.9    -      -       +      +
    371r  LEU*     3.6    31.0    -      -       +      -
    455r  LEU      3.2    15.4    +      -       -      +
    456r  GLU*     3.3     6.0    +      -       +      +
    458r  ILE*     1.3    78.3    -      -       +      +
    460r  ALA*     1.3    60.9    +      -       -      +
    461r  ASP      5.0     0.9    -      -       -      -
    462r  GLU*     5.1     1.0    +      -       -      +
    465r  LEU*     5.9     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 460 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    456r  GLU      2.9    18.5    +      -       -      +
    457r  THR*     3.7     8.1    -      -       -      +
    458r  ILE      3.3     0.2    -      -       -      -
    459r  LEU*     1.3    78.0    -      -       -      +
    461r  ASP*     1.3    58.5    +      -       +      +
    462r  GLU      4.1     1.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 461 (chain r). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    457r  THR*     3.2     7.7    +      -       +      +
    458r  ILE      3.3     8.3    -      -       -      +
    460r  ALA*     1.3    77.3    -      -       +      +
    462r  GLU*     1.3    55.4    +      -       -      +
    463r  GLU*     3.2    22.1    +      -       -      +
    464r  VAL*     2.9    50.1    +      -       +      +
    465r  LEU      3.3     8.1    +      -       -      -
----------------------------------------------------------
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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