Contacts of the helix formed by residues 640 - 665 (chain A) in PDB entry 5XJY


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 MET 640 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    636A  MET*     2.9    11.3    +      -       +      +
    637A  SER*     3.8    13.2    -      -       -      +
    638A  ARG      3.5     1.2    -      -       -      -
    639A  SER*     1.3    76.7    -      -       -      +
    641A  PRO*     1.3    64.4    -      -       +      +
    642A  LEU      2.9     7.1    +      -       -      -
    643A  PHE*     3.3    39.1    +      -       +      -
    644A  MET*     3.1    40.0    +      -       +      +
    700A  LEU*     5.5     3.8    -      -       +      -
    704A  LEU*     4.7    12.8    -      -       +      -
    709A  LEU*     6.2     0.2    -      -       +      -
    710A  LEU*     3.9    29.2    -      -       +      -
    787A  PHE*     4.4     8.5    -      -       +      -
    791A  CYS*     3.5    34.5    -      -       -      -
    794A  PHE*     5.6     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 641 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    638A  ARG      4.6     1.3    -      -       -      +
    639A  SER*     3.6     4.5    -      -       -      -
    640A  MET*     1.3    90.2    -      -       +      +
    642A  LEU*     1.3    55.0    +      -       -      +
    644A  MET*     4.0     2.7    -      -       +      -
    645A  THR*     2.2    40.9    +      -       -      +
    725A  PHE*     5.9     0.2    -      -       +      -
    758A  TYR*     3.5    33.3    -      -       +      +
    761A  TYR*     3.9    19.1    -      -       +      +
    784A  PRO*     4.8     2.9    -      -       +      +
    787A  PHE*     3.6    33.0    -      -       +      -
    788A  GLY*     4.2    14.6    -      -       -      -
    791A  CYS*     5.2     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 642 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    639A  SER*     3.9    21.5    +      -       -      +
    640A  MET      2.9     3.4    +      -       -      -
    641A  PRO*     1.3    77.7    -      -       -      +
    643A  PHE*     1.3    61.7    +      -       +      +
    645A  THR*     2.8    22.1    +      -       +      +
    646A  LEU*     2.9    13.9    +      -       -      +
    649A  ILE*     5.7     0.2    -      -       -      +
    755A  PHE*     5.9     7.6    -      -       +      -
    758A  TYR*     3.5    37.2    -      -       +      +
    759A  LEU*     6.0     1.1    -      -       +      -
    762A  VAL*     4.8     9.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 643 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35A  ILE*     4.5    14.5    -      -       +      +
     36A  PHE*     3.2    39.0    -      +       +      -
     39A  LEU*     3.6    29.2    -      -       +      -
    636A  MET*     3.6    32.8    -      -       +      -
    639A  SER*     3.2    26.0    -      -       -      -
    640A  MET*     3.5    38.1    -      -       +      -
    642A  LEU*     1.3    77.5    -      -       +      +
    644A  MET*     1.3    63.4    +      -       -      +
    646A  LEU*     3.8    16.7    +      -       +      +
    647A  ALA      4.3     3.3    +      -       -      -
    700A  LEU*     6.0     1.3    -      -       +      -
    704A  LEU*     6.5     0.2    -      -       +      -
    709A  LEU*     5.8     4.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 644 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  PHE*     3.5    25.6    -      -       +      -
    640A  MET*     3.1    43.9    +      -       +      +
    641A  PRO*     4.0     7.4    -      -       +      -
    643A  PHE*     1.3    77.4    -      -       +      +
    645A  THR*     1.3    63.6    +      -       -      +
    646A  LEU      3.3     0.4    +      -       -      -
    647A  ALA*     4.2     2.3    +      -       -      +
    648A  TRP*     4.0    45.4    +      -       +      +
    700A  LEU*     3.8    21.5    -      -       +      -
    722A  LEU*     3.7    36.8    -      -       +      -
    725A  PHE*     5.2     3.3    -      -       +      -
    787A  PHE*     4.1    14.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 645 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    641A  PRO*     2.2    29.2    +      -       -      +
    642A  LEU*     2.8    12.0    +      -       +      +
    644A  MET*     1.3    77.4    -      -       -      +
    646A  LEU*     1.3    49.8    +      -       -      +
    648A  TRP*     3.0     7.5    +      -       -      +
    649A  ILE*     2.7    52.5    +      -       +      +
    725A  PHE*     4.9    12.0    -      -       -      -
    754A  TYR*     3.8    22.1    +      -       +      +
    755A  PHE*     5.4     4.0    -      -       +      -
    758A  TYR*     4.2    27.1    -      -       +      -
    784A  PRO*     5.4     1.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 646 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  TRP*     3.5    24.7    +      -       +      +
     35A  ILE*     3.8    39.9    -      -       +      -
    642A  LEU      2.9    11.8    +      -       -      +
    643A  PHE*     4.1    10.8    -      -       +      +
    644A  MET      3.3     1.2    -      -       -      -
    645A  THR*     1.3    76.1    -      -       -      +
    647A  ALA*     1.3    63.6    +      -       -      +
    649A  ILE*     3.0    38.7    +      -       +      +
    650A  TYR      3.3     4.7    +      -       -      -
    755A  PHE*     5.9     2.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 647 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28A  GLU*     5.3     1.7    -      -       -      +
     31A  TRP*     3.4    14.4    -      -       +      +
     32A  PRO*     3.8    38.1    -      -       +      -
     35A  ILE*     6.0     1.9    -      -       +      +
     36A  PHE*     5.1     5.4    -      -       +      -
    643A  PHE      4.3     6.0    +      -       -      +
    644A  MET      4.2     4.1    +      -       -      +
    645A  THR      3.5     0.2    -      -       -      -
    646A  LEU*     1.3    78.4    -      -       -      +
    648A  TRP*     1.3    72.0    +      -       +      +
    650A  TYR*     3.4     6.8    +      -       -      +
    651A  SER*     2.9    25.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 648 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  PRO*     5.9     0.2    -      -       -      +
    644A  MET*     4.0    30.6    -      -       +      +
    645A  THR      3.0     8.5    +      -       -      +
    647A  ALA*     1.3    93.7    -      -       +      +
    649A  ILE*     1.3    59.8    +      -       -      +
    651A  SER*     3.7     9.9    -      -       -      -
    652A  VAL*     2.9    33.1    +      -       +      +
    693A  LEU*     3.6    28.9    -      -       +      +
    696A  SER*     3.2    28.8    +      -       -      -
    697A  ALA*     4.1    13.9    -      -       +      -
    722A  LEU*     3.7    21.1    -      -       +      -
    725A  PHE*     3.4    39.3    -      +       -      -
    726A  ALA*     3.8    20.0    -      -       +      -
    729A  THR*     3.9    15.9    -      -       +      -
    754A  TYR*     3.4    13.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 649 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    645A  THR*     2.7    24.0    +      -       +      +
    646A  LEU*     3.0    34.7    +      -       +      +
    648A  TRP*     1.3    76.5    -      -       -      +
    650A  TYR*     1.3    63.2    +      -       -      +
    652A  VAL*     4.0     1.7    -      -       -      +
    653A  ALA*     3.0    24.1    +      -       +      +
    751A  GLY*     4.1    23.6    -      -       -      +
    754A  TYR*     3.5    21.1    -      -       +      -
    755A  PHE*     3.5    35.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 650 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24A  GLN*     3.3    39.3    +      -       -      +
     27A  LEU*     3.4    36.3    -      -       +      +
     28A  GLU*     3.3    51.4    -      -       -      -
     31A  TRP*     4.5    14.4    -      -       +      +
    646A  LEU      3.3     7.9    +      -       -      +
    647A  ALA      3.4     8.0    +      -       -      +
    648A  TRP      3.3     0.2    -      -       -      -
    649A  ILE*     1.3    81.3    -      -       -      +
    651A  SER*     1.3    60.5    +      -       -      +
    653A  ALA*     3.3     8.6    +      -       +      +
    654A  VAL*     3.0    37.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 651 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28A  GLU*     2.4    39.6    +      -       -      -
    647A  ALA      2.9    18.0    +      -       -      -
    648A  TRP*     3.8     7.4    -      -       -      -
    649A  ILE      3.3     0.2    -      -       -      -
    650A  TYR*     1.3    74.1    -      -       -      +
    652A  VAL*     1.3    63.9    +      -       -      +
    654A  VAL*     3.2     3.3    +      -       -      +
    655A  ILE*     3.0    26.2    +      -       -      +
    693A  LEU*     3.6    30.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 652 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    648A  TRP*     2.9    21.7    +      -       +      +
    649A  ILE      4.0     2.9    -      -       -      +
    651A  SER*     1.3    75.7    -      -       -      +
    653A  ALA*     1.3    59.6    +      -       -      +
    655A  ILE*     3.3     8.5    -      -       +      +
    656A  ILE*     2.9    31.1    +      -       +      +
    693A  LEU*     6.1     2.9    -      -       +      -
    729A  THR*     3.8    28.5    -      -       +      +
    730A  ILE*     5.9     0.2    -      -       -      -
    733A  CYS*     3.7    27.4    -      -       +      -
    736A  ILE*     4.4    16.2    -      -       +      -
    750A  GLY      4.7     8.7    -      -       -      +
    751A  GLY      5.0     0.2    -      -       -      +
    754A  TYR*     4.1    20.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 653 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    649A  ILE*     3.0    21.2    +      -       +      +
    650A  TYR*     3.5    11.4    -      -       +      +
    652A  VAL*     1.3    78.3    -      -       -      +
    654A  VAL*     1.3    64.0    +      -       +      +
    656A  ILE*     3.3    11.0    -      -       -      +
    657A  LYS*     3.0    24.7    +      -       -      +
    747A  ALA*     4.1    20.3    -      -       -      +
    751A  GLY*     5.2    10.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 654 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  ARG*     3.9    26.0    +      -       +      +
     21A  GLN*     5.6     1.6    -      -       -      +
     24A  GLN*     4.5    22.4    -      -       +      +
     28A  GLU*     4.4     7.6    -      -       +      +
    650A  TYR*     3.0    50.2    +      -       +      +
    651A  SER      3.2     6.5    +      -       -      +
    653A  ALA*     1.3    77.8    -      -       +      +
    655A  ILE*     1.3    57.6    +      -       -      +
    657A  LYS*     3.2    14.9    +      -       -      +
    658A  GLY*     3.0    24.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 655 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  ARG*     3.4    24.9    -      -       -      +
    651A  SER      3.0    17.8    +      -       -      +
    652A  VAL*     3.3    11.7    -      -       +      +
    654A  VAL*     1.3    77.3    -      -       -      +
    656A  ILE*     1.3    60.5    +      -       -      +
    658A  GLY      3.2     1.6    +      -       -      +
    659A  ILE*     3.0    27.1    +      -       +      +
    685A  TRP*     3.9    26.0    -      -       +      +
    689A  SER*     3.3    39.5    -      -       -      +
    693A  LEU*     5.8     3.8    -      -       +      -
    730A  ILE*     5.8     2.0    -      -       +      -
    733A  CYS*     3.6    18.6    -      -       +      -
    734A  PHE*     4.9    13.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 656 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    652A  VAL*     2.9    22.8    +      -       +      +
    653A  ALA*     3.3    13.5    -      -       -      +
    655A  ILE*     1.3    75.2    -      -       -      +
    657A  LYS*     1.3    67.5    +      -       -      +
    659A  ILE*     3.9     4.2    -      -       -      +
    660A  VAL*     3.1    27.9    +      -       +      +
    733A  CYS*     3.7     8.5    -      -       -      +
    736A  ILE*     3.6    46.9    -      -       +      +
    737A  SER*     3.5    23.6    -      -       -      +
    740A  PHE*     4.8     6.7    -      -       +      -
    746A  ALA*     4.1    25.1    -      -       +      +
    747A  ALA*     4.6     0.2    -      -       -      -
    750A  GLY*     4.5    11.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 657 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21A  GLN*     5.0    10.7    -      -       -      +
     24A  GLN*     4.5    24.8    -      -       -      +
    653A  ALA      3.0    20.4    +      -       -      +
    654A  VAL*     3.2    13.0    +      -       -      +
    656A  ILE*     1.3    73.6    -      -       -      +
    658A  GLY*     1.3    54.1    +      -       -      +
    660A  VAL*     4.3     4.4    -      -       -      +
    661A  TYR*     2.7    46.9    +      -       +      +
    743A  ALA*     4.6     8.5    -      -       +      +
    744A  ASN*     4.3    10.8    -      -       -      +
    747A  ALA*     3.7    28.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 658 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  PHE*     6.0     1.9    -      -       -      -
     18A  ARG*     5.8     2.2    -      -       -      -
    654A  VAL      3.0    14.2    +      -       -      -
    655A  ILE*     3.2     5.5    +      -       -      -
    657A  LYS*     1.3    77.2    -      -       -      +
    659A  ILE*     1.3    61.8    +      -       -      +
    661A  TYR*     3.5     4.7    -      -       -      +
    662A  GLU*     3.1    26.7    +      -       -      +
    685A  TRP*     4.1    19.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 659 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    655A  ILE*     3.0    17.9    +      -       +      +
    656A  ILE*     3.3     1.8    +      -       -      +
    658A  GLY*     1.3    77.2    -      -       -      +
    660A  VAL*     1.3    61.3    +      -       +      +
    662A  GLU*     3.3    11.8    +      -       -      +
    663A  LYS*     2.9    29.4    +      -       +      +
    668A  LYS*     5.6     4.5    -      -       +      +
    682A  TRP*     4.6    20.2    -      -       +      -
    685A  TRP*     3.4    50.5    -      -       +      +
    733A  CYS*     6.4     0.4    -      -       -      -
    734A  PHE*     4.1    20.0    -      -       +      -
    737A  SER*     3.2    29.2    -      -       -      +
    738A  THR*     6.0     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 660 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    656A  ILE*     3.1    15.8    +      -       +      +
    657A  LYS*     4.3     2.0    -      -       -      +
    659A  ILE*     1.3    76.3    -      -       +      +
    661A  TYR*     1.3    61.8    +      -       -      +
    663A  LYS*     3.5    13.7    -      -       +      +
    664A  GLU*     2.9    27.2    +      -       -      +
    737A  SER*     3.4    32.1    -      -       -      +
    740A  PHE*     4.0    25.4    -      -       +      +
    741A  SER      5.8     1.1    -      -       -      -
    742A  ARG      3.9    13.4    +      -       -      +
    743A  ALA*     4.0    12.1    +      -       -      +
    746A  ALA*     3.6    23.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 661 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  PHE*     5.9    10.1    -      +       -      -
    657A  LYS*     2.7    31.1    +      -       +      +
    658A  GLY*     3.5     7.6    -      -       -      +
    660A  VAL*     1.3    78.0    -      -       -      +
    662A  GLU*     1.3    68.6    +      -       +      +
    664A  GLU*     3.2    34.2    +      -       -      +
    665A  ALA*     3.5    12.5    +      -       +      +
    667A  LEU*     5.8     5.2    -      -       +      -
    743A  ALA*     4.6    13.2    -      -       +      -
    986A  ASP*     3.3    32.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 662 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  LYS*     4.9     7.2    +      -       -      +
     17A  PHE*     5.2     7.0    -      -       +      -
    658A  GLY      3.1    14.8    +      -       -      +
    659A  ILE*     3.5    10.6    -      -       -      +
    661A  TYR*     1.3    82.9    -      -       +      +
    663A  LYS*     1.3    62.7    +      -       -      +
    665A  ALA*     4.3     2.9    -      -       -      +
    666A  ARG      3.6     0.2    +      -       -      -
    667A  LEU*     3.0    52.4    +      -       +      +
    668A  LYS*     3.2    43.7    +      -       -      +
    681A  LEU*     6.1     0.6    -      -       -      +
    685A  TRP*     3.6    35.6    +      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 663 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    659A  ILE*     2.9    21.7    +      -       +      +
    660A  VAL*     3.7    14.4    -      -       +      +
    661A  TYR      3.1     0.4    -      -       -      -
    662A  GLU*     1.3    78.5    -      -       -      +
    664A  GLU*     1.3    64.6    +      -       -      +
    666A  ARG*     3.4    13.7    +      -       -      +
    668A  LYS*     4.8    24.7    -      -       +      +
    669A  GLU*     4.5    15.7    -      -       -      +
    737A  SER      5.6     1.3    -      -       -      +
    738A  THR*     3.5    32.4    +      -       -      +
    739A  LEU      5.7     0.2    -      -       -      -
    740A  PHE      4.3    17.9    +      -       -      +
    741A  SER*     6.2     0.4    -      -       -      +
    846A  PHE*     5.6     8.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 664 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    660A  VAL      2.9    13.0    +      -       -      +
    661A  TYR*     3.2    21.1    +      -       -      +
    663A  LYS*     1.3    76.6    -      -       -      +
    665A  ALA*     1.3    61.1    +      -       +      +
    666A  ARG*     3.1    19.2    +      -       -      +
    741A  SER      5.4    11.0    -      -       -      +
    742A  ARG*     5.5     4.5    -      -       -      +
    743A  ALA*     3.4    34.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 665 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    661A  TYR*     3.5    17.6    +      -       +      +
    662A  GLU*     4.3     0.4    +      -       -      -
    664A  GLU*     1.3    78.7    -      -       +      +
    666A  ARG*     1.3    70.2    +      -       -      +
    667A  LEU*     3.3    17.2    +      -       +      +
    981A  HIS*     4.8     6.4    -      -       -      +
    982A  ASN      4.7    12.9    -      -       -      +
    983A  VAL*     5.5     0.7    -      -       -      -
    986A  ASP*     6.3     2.7    -      -       +      -
----------------------------------------------------------
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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