Contacts of the helix formed by residues 597 - 621 (chain B) in PDB entry 5VOT


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 597 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    543B  VAL*     3.2    20.3    -      -       -      +
    595B  SER*     2.7    16.6    +      -       -      -
    596B  LEU*     1.3    80.6    -      -       -      +
    598B  GLY*     1.3    63.2    +      -       -      -
    599B  ARG      3.0     1.6    -      -       -      -
    600B  ILE*     2.7    39.0    +      -       -      +
    601B  VAL      3.8     0.7    +      -       -      -
    806C  ALA*     4.5     7.2    -      -       -      +
    809C  VAL*     3.6    30.3    -      -       -      -
    810C  ALA*     4.3     9.7    -      -       -      +
    814C  PHE*     4.4     6.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 598 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    540B  LEU*     4.4    10.3    -      -       -      +
    543B  VAL*     4.3     8.7    -      -       -      -
    593B  PRO*     4.2    11.1    -      -       -      +
    595B  SER*     2.4    26.5    +      -       -      -
    597B  SER*     1.3    67.5    +      -       -      +
    599B  ARG*     1.3    55.1    +      -       -      -
    600B  ILE      3.0     0.4    -      -       -      -
    601B  VAL*     2.8    35.8    +      -       -      +
    602B  GLY*     2.9    12.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 599 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    593B  PRO*     4.2    12.6    -      -       +      +
    594B  ARG*     6.0     0.4    -      -       -      -
    595B  SER*     4.0     3.0    +      -       -      +
    596B  LEU*     4.8     4.5    -      -       -      +
    597B  SER*     3.0     3.1    -      -       -      +
    598B  GLY*     1.3    75.9    -      -       -      +
    600B  ILE*     1.3    57.9    +      -       +      +
    603B  GLY*     2.9    23.4    +      -       -      -
    574C  PHE*     4.0    26.2    -      -       +      -
    578C  TRP*     3.1    46.1    -      -       +      -
    581C  LEU*     5.2     0.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 600 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    596B  LEU      5.1     3.8    -      -       -      +
    597B  SER*     2.7    28.6    +      -       -      +
    599B  ARG*     1.3    71.6    -      -       +      +
    601B  VAL*     1.3    65.1    +      -       -      +
    603B  GLY*     3.1     1.4    +      -       -      -
    604B  VAL*     2.9    28.7    +      -       +      +
    802C  GLY*     4.4    15.7    -      -       -      +
    805C  LEU*     4.2    27.1    -      -       +      -
    806C  ALA*     4.5     6.1    -      -       +      -
    809C  VAL*     4.3    25.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 601 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    536B  VAL*     3.8    27.8    -      -       +      +
    539B  VAL*     5.1     8.1    -      -       +      -
    540B  LEU*     3.8    35.9    -      -       +      +
    543B  VAL*     5.3     3.4    -      -       +      -
    598B  GLY*     2.8    24.8    +      -       -      +
    600B  ILE*     1.3    72.1    -      -       -      +
    602B  GLY*     1.3    64.3    +      -       -      +
    604B  VAL*     3.1     9.8    -      -       -      +
    605B  TRP*     2.9    24.3    +      -       -      +
    802C  GLY      5.6     0.7    -      -       -      +
    803C  LEU*     5.2    10.1    -      -       +      -
    806C  ALA*     3.8    25.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 602 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    540B  LEU*     5.2     1.4    -      -       -      +
    579B  PHE*     5.0    17.7    -      -       -      -
    593B  PRO*     5.3     4.7    -      -       -      +
    598B  GLY      2.9    11.4    +      -       -      -
    599B  ARG*     4.0     2.0    -      -       -      -
    601B  VAL*     1.3    78.5    -      -       -      +
    603B  GLY*     1.3    62.7    +      -       -      +
    605B  TRP*     3.7     5.7    -      -       -      +
    606B  TRP*     2.9    40.1    +      -       -      -
    578C  TRP*     4.7     6.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 603 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    599B  ARG      2.9    16.3    +      -       -      -
    600B  ILE*     3.1     4.0    +      -       -      -
    602B  GLY*     1.3    74.8    -      -       -      +
    604B  VAL*     1.3    64.6    +      -       -      +
    606B  TRP*     2.9    11.8    +      -       -      +
    607B  PHE*     2.9    22.5    +      -       -      +
    578C  TRP*     4.3     1.0    -      -       -      -
    581C  LEU*     4.1    23.6    -      -       -      -
    585C  MET*     5.8     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 604 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    536B  VAL*     6.3     0.2    -      -       +      -
    600B  ILE*     2.9    21.1    +      -       +      +
    601B  VAL*     3.1    22.2    -      -       +      +
    603B  GLY*     1.3    69.9    -      -       -      -
    605B  TRP*     1.3    56.9    +      -       +      +
    607B  PHE*     3.3    10.9    +      -       +      -
    608B  PHE*     2.9    27.8    +      -       +      +
    795C  VAL*     6.6     0.2    -      -       +      -
    798C  ILE*     3.8    18.6    -      -       +      +
    799C  LEU*     3.7    46.0    -      -       +      +
    802C  GLY*     4.8    13.5    -      -       -      -
    803C  LEU*     5.3     3.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 605 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    529B  ILE*     5.1     4.0    -      -       +      -
    532B  ALA*     4.6     4.7    -      -       +      -
    533B  TYR*     4.1    33.4    -      +       +      -
    536B  VAL*     4.1    39.5    -      -       +      -
    579B  PHE*     5.4     5.8    -      +       -      -
    580B  SER*     3.8    10.2    +      -       -      +
    583B  ALA*     3.7    30.5    -      -       +      +
    584B  PHE*     4.0    31.3    -      +       +      +
    601B  VAL*     2.9    20.1    +      -       +      +
    602B  GLY*     3.7     5.6    -      -       -      +
    604B  VAL*     1.3    74.9    -      -       +      +
    606B  TRP*     1.3    71.6    +      +       -      +
    608B  PHE*     3.1    40.4    +      +       +      +
    609B  THR*     2.9    25.5    +      -       -      -
    799C  LEU*     4.5     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 606 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    579B  PHE*     4.5    21.6    -      +       -      -
    583B  ALA*     4.5    22.7    +      -       +      +
    592B  SER*     6.1     2.7    -      -       -      -
    593B  PRO*     6.0     0.7    -      -       +      -
    602B  GLY*     2.9    21.7    +      -       -      -
    603B  GLY*     2.9    12.3    +      -       -      +
    605B  TRP*     1.3    84.7    -      +       -      +
    607B  PHE*     1.3    54.4    +      -       -      +
    609B  THR*     2.6    30.0    +      -       -      -
    610B  LEU*     2.9    13.3    +      -       -      +
    578C  TRP*     3.7    34.8    -      +       -      -
    581C  LEU*     4.6     6.5    -      -       +      -
    582C  GLY*     3.8    29.4    -      -       -      -
    585C  MET*     4.3    24.5    -      -       +      -
    587C  GLN*     3.4    31.9    -      -       +      +
    588C  GLY      5.3     3.1    -      -       -      -
    590C  ASP*     5.3     5.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 607 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    603B  GLY      2.9    12.3    +      -       -      +
    604B  VAL*     3.6    14.4    -      -       +      +
    606B  TRP*     1.3    76.0    -      -       -      +
    608B  PHE*     1.3    58.8    +      -       -      +
    610B  LEU*     4.2    12.6    -      -       +      +
    611B  ILE*     3.8    17.3    +      -       -      +
    517C  PHE*     3.3    42.7    -      +       -      -
    518C  LEU*     5.3     2.9    -      -       +      -
    526C  TRP*     5.1    15.0    -      +       -      -
    584C  PHE*     5.9     1.3    -      +       -      -
    585C  MET*     3.5    30.9    -      -       +      +
    795C  VAL*     4.1    16.4    -      -       +      +
    798C  ILE*     4.8    21.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 608 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    529B  ILE*     4.8    24.0    -      -       +      -
    532B  ALA*     5.2     4.5    -      -       +      -
    584B  PHE*     4.9     4.0    -      +       -      -
    604B  VAL*     2.9    13.2    +      -       +      +
    605B  TRP*     3.3    47.1    -      +       +      +
    606B  TRP      3.0     0.2    -      -       -      -
    607B  PHE*     1.3    75.0    -      -       -      +
    609B  THR*     1.3    68.5    +      -       -      +
    610B  LEU      3.3     0.4    -      -       -      -
    611B  ILE*     3.1     8.0    -      -       -      +
    612B  ILE*     3.0    54.6    +      -       +      +
    792C  VAL*     4.9     5.2    -      -       +      -
    795C  VAL*     3.9    27.3    -      -       +      +
    796C  PHE*     4.2    22.2    -      +       -      -
    799C  LEU*     4.6    17.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 609 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    583B  ALA      4.2     6.6    +      -       -      +
    584B  PHE*     3.2    48.3    -      -       +      +
    585B  MET      5.3     0.7    -      -       -      +
    586B  ARG*     5.8     4.9    -      -       -      +
    605B  TRP*     2.9    18.6    +      -       -      -
    606B  TRP*     2.6    20.1    +      -       -      -
    608B  PHE*     1.3    74.5    -      -       -      +
    610B  LEU*     1.3    65.0    +      -       -      +
    612B  ILE*     3.1     3.9    +      -       -      -
    613B  ILE*     2.9    39.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 610 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    586B  ARG*     4.9    15.7    -      -       -      +
    606B  TRP      2.9    11.7    +      -       -      +
    607B  PHE*     4.2    14.6    -      -       +      +
    608B  PHE      3.3     0.2    -      -       -      -
    609B  THR*     1.3    77.0    -      -       -      +
    611B  ILE*     1.3    57.6    +      -       -      +
    613B  ILE*     4.9     2.2    -      -       -      -
    614B  SER*     2.6    49.7    +      -       -      +
    517C  PHE*     6.2     3.6    -      -       +      -
    526C  TRP*     6.2     3.6    -      -       +      -
    584C  PHE*     5.6     0.9    -      -       +      -
    585C  MET*     4.3    27.4    -      -       +      -
    586C  ARG*     5.3     6.3    -      -       +      +
    613C  ILE*     4.5    34.3    -      -       +      -
    616C  TYR*     5.0    16.2    -      -       +      -
    617C  THR*     5.0     4.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 611 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    607B  PHE      3.8    10.4    +      -       -      +
    608B  PHE      3.1    15.9    -      -       -      +
    610B  LEU*     1.3    81.2    -      -       -      +
    612B  ILE*     1.3    72.5    +      -       +      +
    614B  SER*     4.5     1.3    -      -       -      -
    615B  SER*     2.9    30.1    +      -       -      +
    517C  PHE*     3.5    32.5    -      -       +      +
    616C  TYR*     3.4    27.4    -      -       +      +
    620C  LEU*     4.0    16.2    -      -       +      -
    791C  ASN*     5.0    17.9    -      -       +      +
    795C  VAL*     3.7    28.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 612 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    521B  LEU*     4.2    16.4    -      -       +      +
    526B  TRP*     6.5     0.2    -      -       +      -
    529B  ILE*     4.7    18.6    -      -       +      -
    584B  PHE*     4.3    15.5    -      -       +      -
    608B  PHE*     3.0    56.9    +      -       +      +
    609B  THR      3.1     2.4    +      -       -      +
    611B  ILE*     1.3    88.4    -      -       +      +
    613B  ILE*     1.3    71.2    +      -       +      +
    615B  SER*     3.5     4.5    -      -       -      -
    616B  TYR*     3.0    22.8    +      -       +      +
    791C  ASN*     5.9     2.2    -      -       +      +
    792C  VAL*     5.4    13.5    -      -       +      -
    795C  VAL*     5.0     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 613 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    610A  LEU*     4.8    25.1    -      -       +      -
    614A  SER*     5.9     0.2    -      -       -      +
    584B  PHE*     3.5    43.7    -      -       +      +
    585B  MET*     5.9     1.1    -      -       -      -
    586B  ARG*     2.5    49.4    -      -       +      +
    609B  THR*     2.9    34.0    +      -       +      +
    610B  LEU*     4.5     2.0    -      -       -      +
    612B  ILE*     1.3    74.4    -      -       +      +
    614B  SER*     1.3    59.1    +      -       -      +
    616B  TYR*     3.6     9.4    -      -       +      +
    617B  THR*     2.9    38.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 614 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    586B  ARG*     5.0     3.4    -      -       -      +
    610B  LEU*     2.6    36.5    +      -       -      -
    611B  ILE*     4.1     2.7    -      -       -      -
    613B  ILE*     1.3    82.4    -      -       -      +
    615B  SER*     1.3    65.2    +      -       -      +
    617B  THR*     3.3     4.4    +      -       -      -
    618B  ALA*     2.9    25.5    +      -       -      +
    616C  TYR*     4.8     7.6    -      -       -      -
    617C  THR*     3.2    33.0    -      -       -      +
    620C  LEU*     5.3     3.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 615 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    521B  LEU*     4.7     8.2    -      -       -      +
    611B  ILE*     2.9    28.1    +      -       -      +
    612B  ILE*     3.5     3.8    -      -       -      -
    614B  SER*     1.3    75.4    +      -       -      +
    616B  TYR*     1.3    64.2    +      -       -      +
    618B  ALA*     3.3     3.0    +      -       -      +
    619B  ASN*     2.9    24.0    +      -       -      +
    620C  LEU*     4.3    18.1    -      -       -      +
    624C  LEU*     4.1    19.3    -      -       -      +
    787C  LEU*     5.2     7.3    -      -       -      +
    791C  ASN*     5.3     4.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 616 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    610A  LEU*     5.1    14.6    -      -       +      -
    611A  ILE*     3.4    25.6    -      -       +      +
    614A  SER*     5.6     1.6    -      -       -      -
    516B  SER      3.9     8.8    +      -       -      -
    517B  PHE      3.1    23.2    +      -       -      -
    520B  PRO*     3.6    27.6    -      -       +      +
    521B  LEU*     3.6    32.9    -      -       +      +
    526B  TRP*     4.5    21.8    -      +       +      -
    612B  ILE*     3.0    10.8    +      -       +      +
    613B  ILE*     3.6    13.0    -      -       +      +
    615B  SER*     1.3    75.6    -      -       -      +
    617B  THR*     1.3    71.5    +      -       -      +
    619B  ASN*     2.9    17.3    +      -       +      +
    620B  LEU*     3.0    33.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 617 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    586A  ARG*     5.8     1.8    -      -       -      +
    610A  LEU*     4.7     4.7    -      -       -      +
    614A  SER*     3.1    39.8    +      -       -      +
    617A  THR*     3.9    17.5    -      -       -      +
    618A  ALA*     4.3     8.0    -      -       +      +
    586B  ARG*     5.2     2.8    +      -       -      -
    613B  ILE*     2.9    24.5    +      -       -      +
    614B  SER*     3.9     4.7    -      -       -      -
    616B  TYR*     1.3    78.5    -      -       -      +
    618B  ALA*     1.3    64.5    +      -       -      +
    620B  LEU*     3.3    17.2    +      -       -      +
    621B  ALA      4.3     1.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 618 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    614B  SER*     2.9    18.3    +      -       -      +
    615B  SER*     3.6     7.4    -      -       -      +
    617B  THR*     1.3    78.7    -      -       -      +
    619B  ASN*     1.3    62.3    +      -       -      +
    620B  LEU      3.5     0.2    +      -       -      -
    621B  ALA*     4.0    10.9    +      -       -      +
    622B  ALA      5.2     0.5    +      -       -      -
    617C  THR*     4.7     4.0    -      -       -      +
    620C  LEU*     4.5     6.3    -      -       +      -
    621C  ALA*     3.6    42.8    -      -       +      +
    624C  LEU*     6.3     1.1    -      -       +      -
    625C  THR*     6.0     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 619 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    520B  PRO*     3.9    25.6    -      -       +      +
    521B  LEU*     4.3     2.9    -      -       +      +
    615B  SER*     2.9    13.6    +      -       -      +
    616B  TYR*     2.9    13.9    +      -       +      +
    618B  ALA*     1.3    78.0    -      -       -      +
    620B  LEU*     1.3    65.3    +      -       -      +
    621B  ALA      3.0     1.9    +      -       -      -
    622B  ALA*     3.6     7.3    +      -       -      +
    623B  PHE*     3.4    16.6    +      -       -      +
    624C  LEU      5.6     2.3    -      -       -      +
    785C  SER*     3.7    24.9    +      -       -      +
    787C  LEU*     4.0    24.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 620 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    611A  ILE*     4.4    11.9    -      -       +      +
    614A  SER*     4.6     5.4    -      -       -      +
    615A  SER*     3.5    49.1    -      -       -      +
    618A  ALA*     3.7     9.0    -      -       +      -
    619A  ASN*     4.7     5.2    -      -       -      +
    516B  SER      6.1     0.2    -      -       -      +
    520B  PRO*     5.8     3.4    -      -       -      -
    616B  TYR*     3.0    37.6    +      -       +      +
    617B  THR*     3.3    13.3    +      -       -      +
    619B  ASN*     1.3    76.8    -      -       -      +
    621B  ALA*     1.3    65.1    +      -       -      +
    623B  PHE*     3.0    28.2    +      -       +      +
    624B  LEU*     4.3    13.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 621 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    618A  ALA*     3.6    41.9    -      -       +      +
    619A  ASN*     4.2    13.5    +      -       -      +
    621A  ALA*     5.6     1.3    -      -       +      -
    622A  ALA*     4.3    16.8    -      -       +      +
    618B  ALA      4.0     9.1    +      -       -      +
    619B  ASN      3.0     3.2    +      -       -      -
    620B  LEU*     1.3    76.8    -      -       -      +
    622B  ALA*     1.3    58.4    +      -       -      +
    623B  PHE      3.0    15.8    -      -       -      +
----------------------------------------------------------
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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