Contacts of the helix formed by residues 436 - 463 (chain B) in PDB entry 5XA0


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

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

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with SER 436 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    435B  VAL*     1.4    80.7    -      -       -      +
    437B  PRO*     1.3    60.2    -      -       -      +
    438B  ALA*     3.3    15.6    +      -       -      +
    439B  GLU*     3.7    10.5    +      -       -      +
    440B  VAL*     4.2     4.5    +      -       -      +
    441B  ARG*     3.1    13.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 437 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129B  ASN*     6.1     2.2    -      -       -      +
    436B  SER*     1.3    71.1    -      -       -      +
    438B  ALA*     1.3    52.5    +      -       -      +
    441B  ARG*     1.9    56.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 438 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    436B  SER*     3.3     9.1    +      -       -      +
    437B  PRO*     1.3    80.2    -      -       -      +
    439B  GLU*     1.3    51.3    -      -       -      +
    441B  ARG*     2.9    17.0    +      -       -      +
    442B  ASP*     2.1    29.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 439 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    276B  THR*     4.9    12.1    -      -       -      +
    278B  SER*     5.2     9.7    -      -       -      -
    281B  LEU*     6.4     1.3    -      -       -      -
    435B  VAL*     2.6    36.4    -      -       +      +
    436B  SER*     3.7    11.2    +      -       -      +
    438B  ALA*     1.3    72.3    -      -       -      +
    440B  VAL*     1.3    65.5    +      -       +      +
    441B  ARG*     3.0     0.6    -      -       -      +
    442B  ASP*     2.2    40.6    -      -       -      +
    443B  LEU*     2.8    23.9    +      -       +      +
    509B  LEU*     4.5     1.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 440 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127B  LYS*     5.7    16.2    -      -       +      +
    239B  VAL*     4.9     7.0    -      -       +      -
    281B  LEU*     3.4    37.5    -      -       +      -
    435B  VAL*     6.0     2.0    -      -       +      -
    436B  SER      4.2     2.9    +      -       -      +
    439B  GLU*     1.3    78.7    -      -       +      +
    441B  ARG*     1.3   113.8    +      -       -      +
    443B  LEU*     3.0    10.6    +      -       +      +
    444B  ASP*     2.9    24.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 441 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32B  LEU*     3.5    12.1    -      -       +      +
    126B  LEU      5.3     5.2    +      -       -      -
    127B  LYS      5.1    10.8    -      -       -      +
    128B  SER      6.0     0.2    -      -       -      +
    129B  ASN*     4.2    26.6    -      -       +      +
    436B  SER      3.1     6.7    +      -       -      -
    437B  PRO*     1.9    51.9    +      -       -      +
    438B  ALA*     2.9     7.5    +      -       -      +
    439B  GLU      3.0     3.6    -      -       -      +
    440B  VAL*     1.3   131.2    -      -       -      +
    442B  ASP*     1.3    63.9    +      -       -      +
    444B  ASP*     3.0     3.0    +      -       -      -
    445B  PHE*     3.0    18.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 442 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    438B  ALA*     2.1    23.1    -      -       -      +
    439B  GLU*     2.2    30.9    +      -       -      +
    441B  ARG*     1.3    69.4    -      -       -      +
    443B  LEU*     1.3    61.7    +      -       -      +
    445B  PHE*     3.0     7.8    +      -       -      +
    446B  ALA*     2.9    21.5    +      -       -      +
    506B  ARG*     6.0     9.0    -      -       +      -
    509B  LEU*     3.5    12.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 443 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    278B  SER*     2.8    35.0    -      -       -      +
    281B  LEU*     4.8    19.5    -      -       +      -
    439B  GLU*     2.8    27.0    +      -       +      +
    440B  VAL*     3.4    17.0    -      -       +      +
    442B  ASP*     1.3    72.7    -      -       -      +
    444B  ASP*     1.3    64.2    +      -       -      +
    446B  ALA*     3.2     3.6    +      -       -      +
    447B  ASN*     3.0    25.7    +      -       -      +
    509B  LEU*     2.8    54.8    -      -       +      +
    513B  GLN*     5.6     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 444 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32B  LEU*     3.1    33.4    -      -       +      +
    127B  LYS*     5.6     4.9    -      -       +      +
    440B  VAL*     2.9    17.8    +      -       +      +
    441B  ARG*     3.5     4.5    -      -       -      +
    443B  LEU*     1.3    78.3    -      -       -      +
    445B  PHE*     1.3    56.4    +      -       -      +
    447B  ASN*     3.8     5.1    -      -       -      +
    448B  ASP*     2.8    31.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 445 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32B  LEU*     3.0    57.8    -      -       +      +
     33B  VAL*     2.9    34.4    -      -       +      +
    130B  LYS*     5.1     5.6    -      -       -      -
    441B  ARG      3.0     4.9    +      -       -      +
    442B  ASP*     3.0    10.3    +      -       -      +
    444B  ASP*     1.3    74.3    -      -       -      +
    446B  ALA*     1.3    55.7    +      -       -      +
    449B  ALA*     2.7    38.3    +      -       +      +
    476B  LEU*     6.0     1.3    -      -       +      -
    479B  ASP*     5.3    12.6    -      -       +      -
    483B  PHE*     4.6    29.2    -      +       +      -
----------------------------------------------------------
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Residues in contact with ALA 446 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    442B  ASP      2.9    12.0    +      -       -      +
    443B  LEU      3.4     8.1    -      -       -      +
    445B  PHE*     1.3    75.1    -      -       -      +
    447B  ASN*     1.3    51.8    +      -       -      +
    449B  ALA*     2.9     7.9    +      -       -      +
    450B  SER*     1.9    41.1    +      -       -      -
    509B  LEU*     3.8    15.7    -      -       +      -
    510B  MET*     3.9    10.3    -      -       +      -
    513B  GLN*     2.7    24.7    -      -       -      +
    515B  ILE*     4.4     1.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 447 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    443B  LEU*     3.0    18.1    +      -       -      +
    444B  ASP*     4.1     6.1    -      -       -      +
    446B  ALA*     1.3    73.6    -      -       -      +
    448B  ASP*     1.3    50.2    -      -       -      +
    450B  SER*     3.2     5.8    +      -       -      -
    451B  LYS*     1.8    49.6    +      -       +      +
    513B  GLN*     3.1    31.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 448 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30B  LEU      4.1     0.4    -      -       -      +
     31B  GLY*     2.7    17.3    -      -       -      -
     32B  LEU*     2.6    26.5    +      -       +      +
     33B  VAL*     2.7    23.5    +      -       +      +
     34B  ASP*     2.4    36.8    +      -       -      +
    444B  ASP      2.8    17.7    +      -       -      +
    447B  ASN*     1.3    73.2    -      -       -      +
    449B  ALA*     1.3    49.8    +      -       -      +
    451B  LYS*     2.3    30.3    -      -       +      +
    452B  VAL*     2.7    16.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 449 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33B  VAL*     3.0    16.6    -      -       +      +
    445B  PHE*     2.7    22.8    +      -       +      +
    446B  ALA*     2.9     6.5    +      -       -      +
    448B  ASP*     1.3    73.5    -      -       -      +
    450B  SER*     1.3    47.7    +      -       -      +
    451B  LYS*     2.8     1.1    -      -       -      -
    452B  VAL*     2.5    36.9    +      -       -      +
    453B  LEU*     2.8     8.0    -      -       +      +
    476B  LEU*     4.1     4.9    -      -       +      -
    480B  LEU*     5.9     2.5    -      -       +      -
    483B  PHE*     6.1     4.3    -      -       +      -
    515B  ILE*     2.8    28.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 450 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    446B  ALA      1.9    34.0    +      -       -      -
    447B  ASN*     3.4     5.8    -      -       -      -
    449B  ALA*     1.3    66.2    -      -       -      +
    451B  LYS*     1.3    65.1    +      -       -      -
    453B  LEU*     2.8    32.5    -      -       -      +
    454B  GLY*     2.9     9.0    +      -       -      -
    513B  GLN*     3.1    27.4    -      -       -      +
    515B  ILE*     2.8    23.9    -      -       -      +
    518B  GLN*     3.5     8.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 451 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34B  ASP*     3.3    16.8    -      -       -      +
    447B  ASN*     1.8    44.9    +      -       +      +
    448B  ASP*     2.3    47.5    -      -       -      +
    449B  ALA      2.8     4.4    -      -       -      -
    450B  SER*     1.3    70.1    -      -       -      +
    452B  VAL*     1.4    82.6    +      -       -      +
    454B  GLY*     2.9     3.3    +      -       -      +
    455B  SER*     2.8    25.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 452 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33B  VAL*     2.8    20.0    -      -       +      +
     34B  ASP*     2.6    48.0    -      -       +      +
    448B  ASP*     2.7    11.7    -      -       -      +
    449B  ALA      2.5    33.1    +      -       -      +
    451B  LYS*     1.4    87.7    -      -       -      +
    453B  LEU*     1.3    63.9    +      -       -      +
    455B  SER*     3.4     3.4    +      -       -      -
    456B  ILE*     2.7    34.7    +      -       +      +
    476B  LEU*     3.3    13.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 453 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    449B  ALA*     2.8    24.9    -      -       -      +
    450B  SER*     2.8    13.5    -      -       -      +
    452B  VAL*     1.3    78.1    -      -       +      +
    454B  GLY*     1.3    56.2    +      -       -      +
    456B  ILE*     2.9    10.7    +      -       -      +
    457B  ALA*     2.8    27.1    +      -       -      +
    476B  LEU*     4.2    17.5    -      -       +      -
    515B  ILE*     2.9    35.0    -      -       +      +
    518B  GLN*     2.9    34.5    -      -       +      -
    519B  ILE*     4.4     8.5    -      -       +      +
    522B  LEU*     4.0    23.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 454 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    450B  SER      2.9    10.7    +      -       -      -
    451B  LYS*     2.9    10.4    +      -       -      -
    453B  LEU*     1.3    76.6    -      -       -      +
    455B  SER*     1.3    56.0    +      -       -      -
    457B  ALA*     2.9    10.5    +      -       -      +
    458B  GLY*     2.8    24.3    +      -       -      -
    518B  GLN*     4.7    12.6    -      -       -      -
    522B  LEU*     5.9     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 455 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    451B  LYS      2.8    15.8    +      -       -      -
    452B  VAL*     4.3     2.5    -      -       -      -
    454B  GLY*     1.3    69.9    -      -       -      -
    456B  ILE*     1.3    73.7    +      -       -      +
    458B  GLY*     3.3     6.6    +      -       -      +
    459B  LYS*     3.1    24.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 456 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    452B  VAL*     2.7    28.1    +      -       +      +
    453B  LEU*     2.9    12.8    +      -       -      +
    455B  SER*     1.3    76.5    -      -       -      +
    457B  ALA*     1.3    48.8    +      -       -      +
    459B  LYS*     2.4    32.6    +      -       +      +
    460B  LEU*     2.8    28.9    -      -       +      +
    465B  ILE*     4.9     4.0    -      -       +      -
    469B  GLU*     2.9    57.0    -      -       +      +
    472B  SER*     6.4     0.9    -      -       -      -
    473B  VAL*     4.9    22.2    -      -       +      +
    522B  LEU*     5.7     4.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 457 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    453B  LEU      2.8     8.5    +      -       -      +
    454B  GLY*     2.9    15.7    +      -       -      +
    456B  ILE*     1.3    71.8    -      -       -      +
    458B  GLY*     1.3    50.4    -      -       -      +
    459B  LYS      2.7     1.5    +      -       -      -
    460B  LEU*     3.0    21.5    -      -       +      +
    461B  GLU*     3.2     3.1    +      -       -      +
    462B  LYS*     2.0    32.4    +      -       -      -
    522B  LEU*     3.4    31.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 458 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    454B  GLY      2.8    15.2    +      -       -      -
    455B  SER*     3.4     9.4    -      -       -      -
    457B  ALA*     1.3    63.9    -      -       -      +
    459B  LYS*     1.4    52.4    -      -       -      +
    462B  LYS*     1.8    48.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 459 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    455B  SER*     3.1    16.0    +      -       -      +
    456B  ILE*     2.4    26.9    +      -       +      +
    457B  ALA      2.7     0.6    -      -       -      -
    458B  GLY*     1.4    66.7    -      -       -      -
    460B  LEU*     1.4    50.3    +      -       -      -
    462B  LYS*     2.4    30.0    -      -       +      +
    463B  GLY*     2.7    28.0    +      -       -      -
    464B  THR      3.2    10.1    +      -       -      +
    469B  GLU*     3.5    20.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 460 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    456B  ILE*     2.8    58.3    +      -       +      +
    457B  ALA*     3.0    35.2    -      -       +      +
    459B  LYS*     1.4    69.8    -      -       -      +
    461B  GLU*     1.4    66.8    +      -       +      +
    462B  LYS*     2.7     7.9    -      -       -      +
    463B  GLY      3.6    13.4    -      -       -      +
    464B  THR*     5.0     4.0    -      -       -      +
    465B  ILE*     4.7    17.5    -      -       +      -
    469B  GLU*     5.6     0.2    -      -       -      -
    522B  LEU*     3.5    30.1    -      -       +      +
    524B  GLN*     4.6     9.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 461 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    457B  ALA      3.2     4.9    +      -       -      +
    460B  LEU*     1.4    75.9    -      -       +      +
    462B  LYS*     1.4    82.9    +      -       +      +
    524B  GLN*     4.1    31.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 462 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    457B  ALA      2.0    26.7    +      -       -      -
    458B  GLY*     1.8    39.8    +      -       -      +
    459B  LYS*     2.4    43.1    -      -       +      -
    460B  LEU      2.9     0.4    -      -       -      -
    461B  GLU*     1.4    93.3    -      -       -      +
    463B  GLY*     1.3    70.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 463 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    459B  LYS*     2.7    12.8    +      -       -      +
    460B  LEU      3.6    10.2    -      -       -      +
    461B  GLU      3.7     0.2    -      -       -      -
    462B  LYS*     1.3    88.7    -      -       -      +
    464B  THR*     1.3    61.5    +      -       -      -
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


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

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

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