Contacts of the helix formed by residues 754 - 779 (chain C) in PDB entry 4OQB


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 ASN 754 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    716C  VAL*     5.1     0.3    -      -       -      +
    720C  VAL*     4.0     9.7    -      -       -      +
    751C  LEU      5.3     0.2    -      -       -      +
    752C  LEU      4.8     0.7    -      -       -      -
    753C  ASN*     1.3   101.8    +      -       -      +
    755C  ALA*     1.3    62.3    +      -       -      +
    756C  ASP*     3.2    21.7    -      -       -      +
    757C  SER*     3.0    26.3    +      -       -      +
    758C  VAL*     3.5    10.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 755 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    717C  GLN*     6.3     1.8    -      -       +      -
    720C  VAL*     4.5    13.1    -      -       +      +
    754C  ASN*     1.3    73.7    -      -       -      +
    756C  ASP*     1.3    59.0    +      -       -      +
    757C  SER      3.5     0.4    -      -       -      -
    758C  VAL*     3.2    13.1    -      -       -      +
    759C  GLN      3.8     1.2    +      -       -      -
    887C  THR*     3.2    34.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 756 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    754C  ASN*     3.2    18.7    -      -       -      +
    755C  ALA*     1.3    73.9    -      -       +      +
    757C  SER*     1.3    64.9    +      -       -      +
    758C  VAL      3.4     0.7    -      -       -      -
    759C  GLN*     3.5    19.8    -      -       -      +
    760C  ALA*     2.8    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 757 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    751C  LEU      5.2     1.8    -      -       -      -
    752C  LEU*     4.0    19.0    -      -       -      +
    753C  ASN      3.9     6.3    +      -       -      -
    754C  ASN*     3.0    40.0    +      -       -      -
    756C  ASP*     1.3    80.6    +      -       -      +
    758C  VAL*     1.3    66.9    +      -       -      +
    760C  ALA*     3.3     7.3    +      -       -      +
    761C  LYS*     3.0    33.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 758 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    713C  LEU*     3.5    47.3    -      -       +      +
    716C  VAL*     4.8     9.4    -      -       +      -
    717C  GLN*     4.5    15.7    -      -       +      +
    752C  LEU*     5.1     3.5    -      -       +      +
    754C  ASN      3.5    14.6    -      -       -      +
    755C  ALA*     3.2    24.0    -      -       -      +
    757C  SER*     1.3    77.9    +      -       -      +
    759C  GLN*     1.3    52.5    +      -       -      +
    761C  LYS*     3.3     2.5    +      -       -      +
    762C  VAL*     2.7    32.7    +      -       -      +
    885C  PRO*     4.1    17.7    -      -       +      -
    887C  THR*     4.3    10.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 759 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    755C  ALA      4.0     4.7    -      -       -      +
    756C  ASP*     3.4    26.2    +      -       -      +
    757C  SER      3.3     0.4    -      -       -      -
    758C  VAL*     1.3    82.0    -      -       -      +
    760C  ALA*     1.3    58.4    +      -       -      +
    762C  VAL*     3.3     8.2    +      -       +      +
    763C  GLU*     2.9    32.6    +      -       +      +
    887C  THR*     4.0    14.2    -      -       +      +
    888C  GLY*     3.3    37.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 760 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    689C  TYR*     3.8    13.4    -      -       +      -
    756C  ASP      2.8    18.4    +      -       -      +
    757C  SER*     3.5     9.2    -      -       -      +
    758C  VAL      3.3     0.4    -      -       -      -
    759C  GLN*     1.3    77.2    -      -       -      +
    761C  LYS*     1.3    64.5    +      -       +      +
    763C  GLU*     3.5    11.4    +      -       -      +
    764C  MET*     3.1    24.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 761 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    689C  TYR*     4.4     6.1    -      -       -      -
    690C  GLU*     5.0     6.6    +      -       -      -
    713C  LEU*     3.5    23.6    -      -       +      +
    736C  PHE*     4.0    11.9    -      -       +      -
    737C  TYR*     3.4    27.3    +      -       -      -
    742C  HIS*     3.7    14.2    +      -       -      +
    744C  PHE*     5.2     0.6    -      -       -      -
    750C  PRO*     5.0     6.7    -      -       -      +
    752C  LEU*     4.1    17.4    -      -       +      +
    757C  SER*     3.0    20.7    +      -       -      +
    758C  VAL      3.8     0.2    -      -       -      +
    760C  ALA*     1.3    78.8    -      -       -      +
    762C  VAL*     1.3    64.1    +      -       -      +
    764C  MET*     3.5    32.8    -      -       +      +
    765C  LEU*     3.3    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 762 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    710C  TYR*     4.2     4.3    -      -       +      -
    713C  LEU*     3.5     8.0    -      -       +      +
    758C  VAL      2.7    20.4    +      -       -      +
    759C  GLN*     3.3    11.0    +      -       +      +
    761C  LYS*     1.3    72.2    -      -       -      +
    763C  GLU*     1.3    63.4    +      -       -      +
    765C  LEU*     3.4     5.5    +      -       -      +
    766C  ASP*     3.0    31.5    +      -       -      +
    885C  PRO*     3.6    31.0    -      -       +      +
    887C  THR      5.5     2.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 763 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    689C  TYR*     3.2    23.8    +      -       -      +
    759C  GLN*     2.9    20.3    +      -       +      +
    760C  ALA*     3.6     9.6    -      -       -      +
    762C  VAL*     1.3    72.3    -      -       -      +
    764C  MET*     1.3    65.3    +      -       -      +
    766C  ASP*     3.3    11.6    +      -       +      +
    767C  ASN*     3.0    36.0    +      -       -      +
    865C  ARG*     4.5     2.6    +      -       -      +
    909C  HIS*     3.3    30.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 764 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    686C  MET*     4.5     1.9    -      -       -      +
    689C  TYR*     3.1    60.0    -      -       +      +
    691C  ILE*     3.6    35.2    -      -       +      -
    736C  PHE*     4.7     0.4    -      -       -      -
    742C  HIS*     3.4    26.9    -      -       -      +
    760C  ALA      3.1    13.0    +      -       -      +
    761C  LYS*     3.5    26.2    -      -       +      +
    763C  GLU*     1.3    76.5    -      -       -      +
    765C  LEU*     1.3    67.2    +      -       +      +
    767C  ASN*     3.2     2.8    +      -       -      +
    768C  LEU*     2.7    39.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 765 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    691C  ILE*     5.8     0.4    -      -       +      -
    706C  ILE*     4.2     9.3    -      -       +      +
    709C  ALA*     3.9    13.7    -      -       +      -
    710C  TYR*     3.4    58.7    +      -       +      +
    713C  LEU*     4.1    10.1    -      -       +      -
    736C  PHE*     3.9     9.4    -      -       +      -
    740C  ILE*     3.5    26.0    -      -       +      -
    761C  LYS      3.3    13.1    +      -       -      +
    762C  VAL      3.4     5.1    +      -       -      +
    764C  MET*     1.3    89.1    -      -       +      +
    766C  ASP*     1.3    57.6    +      -       -      +
    768C  LEU*     3.8    11.2    -      -       +      +
    769C  LEU*     2.9    32.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 766 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    710C  TYR*     2.7    25.1    +      -       -      -
    762C  VAL*     3.0    22.9    +      -       -      +
    763C  GLU*     3.5    12.6    -      -       +      +
    764C  MET      3.3     0.2    -      -       -      -
    765C  LEU*     1.3    77.2    -      -       -      +
    767C  ASN*     1.3    61.2    +      -       -      +
    769C  LEU*     3.6     3.3    +      -       -      +
    770C  ASP*     3.0    30.1    +      -       -      +
    868C  ASN*     5.0     1.8    -      -       -      +
    880C  ALA*     5.5     2.6    -      -       -      +
    881C  PRO*     4.7     9.4    -      -       -      +
    889C  TYR*     4.9     8.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 767 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    686C  MET*     3.5    22.2    -      -       +      -
    689C  TYR*     3.0    21.5    +      -       +      -
    763C  GLU*     3.0    29.1    +      -       -      +
    764C  MET      3.7     1.3    -      -       -      +
    766C  ASP*     1.3    74.8    -      -       -      +
    768C  LEU*     1.3    65.6    +      -       -      +
    770C  ASP*     3.1    13.5    +      -       -      +
    771C  ILE*     3.2    19.0    +      -       +      +
    865C  ARG*     3.6    28.6    +      -       -      +
    867C  THR*     3.7     4.9    +      -       -      +
    868C  ASN*     3.2    29.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 768 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    686C  MET*     4.0    19.4    -      -       +      -
    691C  ILE*     5.1    22.2    -      -       +      -
    696C  MET*     5.7     9.2    -      -       +      -
    701C  LEU*     5.4     9.6    -      -       +      -
    706C  ILE*     4.2    27.4    -      -       +      -
    740C  ILE*     6.3     2.5    -      -       +      -
    764C  MET*     2.7    24.7    +      -       +      +
    765C  LEU*     3.8    12.8    -      -       +      +
    767C  ASN*     1.3    73.4    -      -       -      +
    769C  LEU*     1.3    65.7    +      -       -      +
    771C  ILE*     3.3     9.7    +      -       +      +
    772C  GLU*     3.3    35.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 769 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    703C  LYS*     3.8    33.9    -      -       +      +
    706C  ILE*     3.7    41.3    -      -       +      -
    710C  TYR*     5.1     6.1    -      -       +      +
    765C  LEU      2.9    17.4    +      -       -      +
    766C  ASP*     3.7     7.2    -      -       -      +
    767C  ASN      3.2     0.2    -      -       -      -
    768C  LEU*     1.3    78.1    -      -       +      +
    770C  ASP*     1.3    60.9    +      -       -      +
    772C  GLU*     3.2     9.8    +      -       +      +
    773C  VAL*     2.9    40.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 770 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    766C  ASP      3.0    16.2    +      -       -      +
    767C  ASN      3.1     8.1    +      -       -      +
    769C  LEU*     1.3    81.6    -      -       -      +
    771C  ILE*     1.3    56.8    +      -       -      +
    773C  VAL*     3.5    11.0    -      -       -      +
    774C  ALA*     2.8    26.9    +      -       -      +
    867C  THR      4.4     7.7    -      -       -      +
    868C  ASN*     3.0    47.9    -      -       -      +
    870C  ALA*     5.2     1.6    -      -       -      +
    871C  GLY*     5.3     5.5    +      -       -      +
    878C  ARG*     3.4    27.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 771 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    679C  VAL*     4.1    13.2    -      -       +      -
    682C  MET*     3.4    34.8    -      -       +      +
    683C  LYS*     5.2     3.6    -      -       +      +
    686C  MET*     3.4    44.4    -      -       +      -
    767C  ASN      3.2    10.9    +      -       -      +
    768C  LEU*     3.6    11.9    -      -       +      +
    769C  LEU      3.2     0.2    -      -       -      -
    770C  ASP*     1.3    75.9    -      -       -      +
    772C  GLU*     1.3    59.6    +      -       +      +
    774C  ALA*     3.2     8.0    +      -       -      +
    775C  TYR*     2.9    49.7    +      -       +      -
    867C  THR*     4.8     7.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 772 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    696C  MET*     3.6    19.8    -      -       -      +
    697C  PRO      4.6     2.4    -      -       -      +
    699C  GLY      4.1     0.2    -      -       -      +
    700C  LYS*     3.7    37.7    -      -       +      +
    701C  LEU*     3.8    11.1    +      -       -      +
    706C  ILE*     6.0     3.1    -      -       +      -
    768C  LEU*     3.3    31.4    +      -       +      +
    769C  LEU*     3.2    12.2    +      -       +      +
    771C  ILE*     1.3    76.3    -      -       +      +
    773C  VAL*     1.3    54.5    +      -       +      +
    775C  TYR*     3.5    21.6    +      -       -      +
    776C  SER*     2.7    35.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 773 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    703C  LYS*     6.2     0.4    -      -       -      -
    769C  LEU*     2.9    38.7    +      -       +      +
    770C  ASP*     3.5    12.6    -      -       -      +
    771C  ILE      3.2     0.2    -      -       -      -
    772C  GLU*     1.3    75.5    -      -       -      +
    774C  ALA*     1.3    64.5    +      -       -      +
    776C  SER*     3.1     8.9    +      -       -      -
    777C  LEU*     3.0    43.5    +      -       +      +
    871C  GLY*     4.4    19.3    -      -       -      -
    874C  SER*     4.7     0.2    -      -       -      +
    875C  GLN*     3.7    26.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 774 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    677C  PHE*     3.9    12.3    -      -       +      -
    679C  VAL*     5.3     6.2    -      -       +      +
    682C  MET*     4.0    21.8    -      -       +      -
    770C  ASP      2.8    18.2    +      -       -      +
    771C  ILE      3.2     6.3    +      -       -      +
    773C  VAL*     1.3    76.7    -      -       -      +
    775C  TYR*     1.3    58.0    +      -       -      +
    777C  LEU*     3.7     4.9    +      -       -      -
    778C  LEU*     3.1    27.7    +      -       -      +
    870C  ALA*     3.9    27.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 775 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    679C  VAL*     3.3    36.0    -      -       +      +
    683C  LYS*     3.2    30.9    +      -       +      +
    697C  PRO*     3.6    20.5    -      -       +      +
    700C  LYS*     6.4     1.6    -      -       +      -
    771C  ILE*     2.9    33.2    +      -       +      -
    772C  GLU*     3.6    24.7    -      -       -      +
    773C  VAL      3.2     0.2    -      -       -      -
    774C  ALA*     1.3    74.6    -      -       -      +
    776C  SER*     1.3    58.3    +      -       -      +
    778C  LEU*     3.2     8.9    +      -       +      -
    779C  ARG*     2.7    80.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 776 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    700C  LYS*     5.8     4.3    -      -       -      +
    772C  GLU      2.7    20.9    +      -       -      -
    773C  VAL*     3.1    13.1    +      -       -      -
    775C  TYR*     1.3    75.9    -      -       -      +
    777C  LEU*     1.3    62.3    +      -       -      +
    779C  ARG*     3.0    22.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 777 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    677C  PHE*     4.1    20.0    -      -       +      -
    773C  VAL*     3.0    42.8    +      -       +      +
    774C  ALA*     3.9     7.6    -      -       -      +
    776C  SER*     1.3    80.1    -      -       -      +
    778C  LEU*     1.3    65.7    +      -       -      +
    779C  ARG      3.4     2.6    +      -       -      -
    780C  GLY*     4.7     0.7    -      -       -      -
    796C  LYS*     3.2    61.5    -      -       +      +
    797C  LEU*     5.8     0.7    -      -       -      -
    798C  LYS*     5.8     0.7    -      -       +      -
    870C  ALA*     5.0     4.9    -      -       +      +
    874C  SER*     4.2    21.1    -      -       -      +
    875C  GLN*     5.6     1.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 778 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    677C  PHE*     4.2    19.5    -      -       +      +
    679C  VAL*     4.1    25.4    -      -       +      -
    774C  ALA      3.1    15.8    +      -       -      +
    775C  TYR*     3.2    12.3    +      -       +      +
    777C  LEU*     1.3    77.8    -      -       -      +
    779C  ARG*     1.3    61.2    +      -       +      +
    780C  GLY      3.3     1.6    +      -       -      -
    793C  ASN*     3.5    31.4    -      -       -      +
    796C  LYS*     2.8    21.7    +      -       -      +
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Residues in contact with ARG 779 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    697C  PRO*     3.3    28.5    +      -       -      +
    698C  LEU*     4.8     5.9    +      -       -      +
    700C  LYS*     3.6    28.7    -      -       -      +
    775C  TYR*     2.7    61.5    +      -       +      +
    776C  SER*     3.0    20.7    -      -       -      +
    777C  LEU      4.0     0.7    -      -       -      -
    778C  LEU*     1.3    73.0    -      -       +      +
    780C  GLY*     1.3    57.5    +      -       -      +
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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