Contacts of the helix formed by residues 681 - 706 (chain A) in PDB entry 4MS0


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 LEU 681 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    476A  HIS*     5.1    16.7    +      -       +      +
    680A  LYS*     1.3    75.0    -      -       -      +
    682A  TRP*     1.3    69.1    +      -       -      +
    683A  PRO*     3.4     2.9    -      -       +      -
    684A  VAL*     2.8    20.3    +      -       +      +
    685A  THR*     3.0     9.6    +      -       -      -
    727B  LEU*     3.7    33.2    -      -       +      -
    763B  GLU*     4.2    28.7    -      -       +      +
    766B  ILE*     4.3    24.0    -      -       +      -
    767B  ARG*     4.1    26.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 682 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    680A  LYS      3.6     2.2    +      -       -      -
    681A  LEU*     1.3    70.0    -      -       -      +
    683A  PRO*     1.3    68.9    -      -       +      +
    685A  THR*     3.1    12.1    +      -       +      -
    686A  LYS*     2.7    51.7    +      -       +      +
    758A  ASN*     3.3    35.5    +      -       -      +
    761A  GLN*     3.5    40.8    +      -       +      +
    762A  TRP*     3.5    57.0    -      +       -      -
    765A  VAL*     4.1    17.3    -      -       +      -
    770A  GLU*     5.1     4.1    +      -       +      +
    721B  GLU*     5.2     2.8    +      -       -      -
    724B  GLN*     3.4    35.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 683 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    681A  LEU*     3.4    12.1    -      -       +      -
    682A  TRP*     1.3    99.6    -      -       +      +
    684A  VAL*     1.3    56.2    +      -       +      +
    686A  LYS*     3.8     6.4    -      -       +      +
    687A  LEU*     3.0    36.7    +      -       -      +
    724B  GLN*     3.2    39.7    -      -       +      +
    727B  LEU*     4.0    16.4    -      -       +      -
    728B  GLY*     3.7    25.8    -      -       -      +
    766B  ILE*     5.3     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 684 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    478A  ASP*     3.5    44.0    -      -       +      +
    680A  LYS*     3.6    24.9    -      -       +      -
    681A  LEU*     2.8    19.3    +      -       +      +
    683A  PRO*     1.3    69.1    -      -       -      +
    685A  THR*     1.3    66.3    +      -       -      +
    687A  LEU*     3.4     8.0    +      -       -      +
    688A  THR*     3.1    33.4    +      -       -      +
    727B  LEU*     4.4    14.4    -      -       +      -
    731B  ASN*     4.0    16.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 685 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    677A  SER*     2.8    28.6    +      -       -      +
    678A  VAL*     4.3     1.8    -      -       +      -
    680A  LYS      3.2    10.6    +      -       -      -
    681A  LEU      3.0     3.4    +      -       -      -
    682A  TRP*     3.4    17.9    -      -       +      -
    684A  VAL*     1.3    74.9    -      -       -      +
    686A  LYS*     1.3    65.4    +      -       -      +
    688A  THR*     3.5     4.5    +      -       -      -
    689A  ALA*     3.1    22.5    +      -       +      +
    730A  TYR*     3.5    25.1    -      -       -      +
    758A  ASN*     2.8    32.8    +      -       -      +
    762A  TRP*     4.6     2.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 686 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    682A  TRP*     2.7    42.7    +      -       +      +
    683A  PRO*     3.8     7.2    -      -       +      +
    685A  THR*     1.3    73.6    -      -       -      +
    687A  LEU*     1.3    65.0    +      -       +      +
    689A  ALA*     3.3    14.9    +      -       +      +
    690A  ASN*     3.3    33.0    +      -       -      +
    762A  TRP*     3.8    33.2    -      -       +      -
    765A  VAL*     5.4     1.3    -      -       -      -
    770A  GLU*     3.8    21.5    +      -       -      -
    773A  THR*     5.0    16.2    -      -       -      -
    774A  TRP      6.1     1.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 687 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    683A  PRO      3.0    25.3    +      -       -      +
    684A  VAL*     3.7     6.3    -      -       -      +
    685A  THR      3.3     0.2    -      -       -      -
    686A  LYS*     1.3    79.5    -      -       +      +
    688A  THR*     1.3    62.1    +      -       -      +
    690A  ASN*     3.2    24.0    +      -       -      +
    691A  ASP*     3.6     9.6    +      -       -      +
    774A  TRP      3.6     7.4    -      -       -      +
    775A  ILE*     3.5    37.7    -      -       +      -
    728B  GLY*     4.0    17.3    -      -       -      +
    731B  ASN*     3.8    29.8    -      -       +      -
    732B  ALA*     4.1     9.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 688 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    524A  TYR*     3.5    29.6    -      -       +      -
    528A  LYS*     5.3     8.4    +      -       -      +
    677A  SER*     3.6    28.0    -      -       -      +
    684A  VAL*     3.1    24.1    +      -       -      +
    685A  THR      3.9     4.0    -      -       -      -
    687A  LEU*     1.3    74.7    -      -       -      +
    689A  ALA*     1.3    63.3    +      -       -      +
    691A  ASP*     2.9    21.7    +      -       +      +
    692A  ILE*     3.0    12.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 689 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    677A  SER*     5.7     0.2    +      -       -      -
    685A  THR*     3.1    14.7    +      -       +      +
    686A  LYS*     3.5    10.8    -      -       +      +
    687A  LEU      3.3     0.4    -      -       -      -
    688A  THR*     1.3    77.8    -      -       -      +
    690A  ASN*     1.3    61.5    +      -       -      +
    692A  ILE*     3.3    13.7    +      -       +      +
    693A  TYR*     3.0    38.3    +      -       +      -
    722A  VAL*     6.2     0.2    -      -       +      -
    726A  GLN*     4.8     7.9    -      -       -      +
    762A  TRP*     4.2    26.0    -      -       +      -
    900A  2ZX      5.8     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 690 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    686A  LYS*     3.3    34.1    +      -       -      +
    687A  LEU*     3.2    20.3    +      -       -      +
    689A  ALA*     1.3    75.8    -      -       -      +
    691A  ASP*     1.3    61.0    +      -       -      +
    693A  TYR*     3.8     4.4    -      -       -      +
    694A  ALA*     2.8    29.9    +      -       -      +
    697A  TRP*     5.3     3.7    -      -       -      -
    775A  ILE*     3.2    32.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 691 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    523A  PRO*     3.3    27.5    -      -       -      +
    524A  TYR*     3.7    18.3    -      -       +      +
    526A  ASN*     5.7     0.2    +      -       -      -
    528A  LYS*     5.0    12.3    +      -       -      +
    687A  LEU      3.6    12.4    +      -       -      +
    688A  THR*     2.9    14.2    +      -       +      +
    690A  ASN*     1.3    77.8    -      -       -      +
    692A  ILE*     1.3    64.9    +      -       -      +
    694A  ALA*     3.3     8.2    +      -       -      +
    695A  GLU*     3.1    19.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 692 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    524A  TYR*     3.5    44.4    -      -       +      +
    677A  SER*     4.3     8.3    -      -       -      +
    688A  THR*     3.0    18.7    +      -       +      +
    689A  ALA*     3.5    16.4    -      -       +      +
    691A  ASP*     1.3    76.2    -      -       -      +
    693A  TYR*     1.3    64.3    +      -       +      +
    695A  GLU*     3.4     4.0    +      -       -      +
    696A  PHE*     3.1    54.5    +      -       +      -
    726A  GLN*     5.9     0.2    -      -       -      +
    900A  2ZX      3.5    47.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 693 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    689A  ALA*     3.0    32.2    +      -       +      +
    690A  ASN*     4.1     3.6    -      -       -      +
    692A  ILE*     1.3    81.9    -      -       +      +
    694A  ALA*     1.3    66.7    +      -       -      +
    696A  PHE*     3.1     7.6    +      +       -      +
    697A  TRP*     2.8    57.8    +      +       +      -
    713A  MET*     3.6    48.4    -      -       +      +
    722A  VAL*     3.5    44.5    +      -       +      +
    725A  GLY*     4.3     4.5    -      -       -      -
    726A  GLN*     3.1    43.9    +      -       +      +
    900A  2ZX      5.0     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 694 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    523A  PRO*     4.0    18.0    -      -       +      +
    690A  ASN      2.8    19.9    +      -       -      +
    691A  ASP*     3.3     7.8    +      -       -      +
    693A  TYR*     1.3    75.5    -      -       -      +
    695A  GLU*     1.3    60.8    +      -       -      +
    697A  TRP*     3.6    15.0    +      -       +      +
    698A  ALA*     3.3    22.2    +      -       -      +
    716A  ARG*     4.9     2.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 695 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    522A  VAL*     3.7     7.1    -      -       -      +
    523A  PRO*     4.1    16.5    -      -       +      +
    524A  TYR*     3.2    10.3    +      -       +      +
    525A  HIS*     2.6    56.6    +      -       -      -
    567A  HIS*     3.5     3.3    -      -       -      -
    569A  GLY*     3.2    38.6    -      -       -      +
    691A  ASP      3.1    12.4    +      -       -      +
    692A  ILE      3.7     7.9    -      -       -      +
    694A  ALA*     1.3    74.9    -      -       -      +
    696A  PHE*     1.3    69.1    +      -       +      +
    698A  ALA*     3.4     7.1    +      -       -      +
    699A  GLU*     3.3    18.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 696 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    525A  HIS*     5.6    11.0    -      +       -      -
    571A  SER*     5.7     4.7    -      -       -      -
    692A  ILE*     3.1    46.0    +      -       +      -
    693A  TYR*     3.1    13.7    +      +       -      +
    695A  GLU*     1.3    80.2    -      -       +      +
    697A  TRP*     1.3    58.2    +      -       -      +
    699A  GLU*     2.9    25.2    +      -       -      +
    700A  GLY      2.9    10.9    +      -       -      -
    713A  MET*     3.7    47.6    -      -       +      +
    714A  MET*     3.6    35.8    -      -       +      +
    900A  2ZX      3.7    17.0    -      +       +      -
----------------------------------------------------------
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Residues in contact with TRP 697 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    690A  ASN*     5.3     3.6    -      -       -      -
    693A  TYR*     2.8    48.2    +      +       +      +
    694A  ALA*     4.0    14.6    -      -       +      +
    696A  PHE*     1.3    72.1    -      -       -      +
    698A  ALA*     1.3    57.3    +      -       -      +
    700A  GLY*     3.3     1.2    +      -       -      -
    701A  ASP*     3.0    33.8    +      -       -      +
    712A  PRO      5.2     0.2    +      -       -      -
    713A  MET      3.7    13.4    +      -       -      -
    714A  MET      3.4    13.0    -      -       -      +
    715A  ASP      3.7    12.6    +      -       -      -
    716A  ARG*     3.5    57.2    -      -       +      +
    719A  LYS*     3.6    44.8    -      -       +      +
    722A  VAL*     4.4    10.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 698 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    523A  PRO*     6.2     1.8    -      -       +      -
    569A  GLY      6.1     0.2    -      -       -      +
    570A  PHE*     5.6     0.9    -      -       -      -
    694A  ALA      3.3    15.7    +      -       -      +
    695A  GLU*     3.7     7.0    -      -       -      +
    696A  PHE      3.2     0.4    -      -       -      -
    697A  TRP*     1.3    75.3    -      -       -      +
    699A  GLU*     1.3    66.0    +      -       -      +
    701A  ASP*     3.4     7.0    +      -       -      +
    702A  GLU*     3.3    26.0    +      -       -      +
    716A  ARG*     3.7     9.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 699 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    569A  GLY      3.9     9.4    +      -       -      +
    570A  PHE*     3.6    14.9    -      -       +      -
    571A  SER*     2.5    50.3    +      -       -      -
    573A  SER*     4.8     0.9    -      -       -      -
    574A  TYR*     3.3    28.6    +      -       +      +
    695A  GLU      3.3    10.4    +      -       -      +
    696A  PHE*     2.9    14.9    +      -       -      +
    698A  ALA*     1.3    75.2    -      -       -      +
    700A  GLY*     1.3    66.3    +      -       -      +
    702A  GLU*     2.9    15.6    +      -       -      +
    703A  MET*     3.0    16.8    +      -       +      +
    714A  MET*     3.3    24.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 700 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    696A  PHE      2.9     9.9    +      -       -      -
    697A  TRP      3.3     0.6    +      -       -      -
    699A  GLU*     1.3    75.9    -      -       -      +
    701A  ASP*     1.3    62.9    +      -       -      +
    703A  MET*     3.2     7.2    +      -       -      +
    704A  LYS*     3.1    30.3    +      -       -      +
    710A  PRO*     3.8    18.1    -      -       -      +
    714A  MET*     3.3    24.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 701 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    697A  TRP      3.0    21.7    +      -       -      +
    698A  ALA*     3.5    10.9    -      -       -      +
    699A  GLU      3.1     0.4    -      -       -      -
    700A  GLY*     1.3    76.3    -      -       -      +
    702A  GLU*     1.3    63.3    -      -       +      +
    704A  LYS*     3.4    24.6    +      -       -      +
    705A  LYS*     3.5    27.7    +      -       -      +
    714A  MET      5.2     0.2    -      -       -      +
    716A  ARG*     2.7    45.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 702 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    570A  PHE*     4.0    21.5    -      -       +      -
    574A  TYR*     3.8    22.4    +      -       +      +
    698A  ALA      3.5    13.5    -      -       -      +
    699A  GLU      2.9     9.0    +      -       -      +
    701A  ASP*     1.3    76.1    -      -       -      +
    703A  MET*     1.3    65.5    +      -       -      +
    704A  LYS      3.3     0.5    +      -       -      -
    705A  LYS*     3.3    43.3    +      -       -      +
    706A  LEU*     3.5    18.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 703 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    574A  TYR*     4.0    20.2    -      -       +      -
    577A  LYS*     5.4     6.1    -      -       +      -
    578A  PHE*     4.2    17.7    -      -       +      -
    699A  GLU*     3.0    22.1    +      -       -      +
    700A  GLY*     3.2     6.9    +      -       -      +
    702A  GLU*     1.3    77.0    -      -       -      +
    704A  LYS*     1.3    60.2    +      -       -      +
    706A  LEU*     3.1     9.7    +      -       -      +
    707A  GLY      3.3     0.2    +      -       -      -
    708A  ILE*     2.9    58.0    +      -       +      +
    709A  GLN      4.4     0.2    -      -       -      +
    710A  PRO*     3.9    28.7    -      -       +      -
    711A  ILE*     5.1     2.5    -      -       +      +
    714A  MET*     4.4    19.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 704 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    700A  GLY      3.1    19.1    +      -       -      +
    701A  ASP*     3.6    18.7    +      -       -      +
    702A  GLU      3.2     0.4    -      -       -      -
    703A  MET*     1.3    75.6    -      -       -      +
    705A  LYS*     1.3    61.8    +      -       +      +
    707A  GLY*     3.3    12.3    +      -       -      -
    708A  ILE      3.4     6.3    -      -       -      +
    709A  GLN*     4.6    11.7    -      -       -      +
    710A  PRO*     3.7    27.1    -      -       +      -
    715A  ASP*     2.8    31.3    +      -       -      +
    716A  ARG*     4.9     4.0    -      -       -      +
    717A  ASP*     3.3    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 705 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    701A  ASP*     3.5    22.3    +      -       -      +
    702A  GLU*     3.3    38.1    +      -       -      +
    703A  MET      3.3     0.4    -      -       -      -
    704A  LYS*     1.3    77.6    -      -       +      +
    706A  LEU*     1.3    65.8    +      -       +      +
    707A  GLY      3.3     1.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 706 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    574A  TYR*     3.7    23.3    -      -       -      +
    578A  PHE*     3.7    41.8    -      -       +      -
    702A  GLU*     3.5    14.6    +      -       +      +
    703A  MET      3.1     7.1    +      -       -      +
    705A  LYS*     1.3    81.9    -      -       +      +
    707A  GLY*     1.3    60.2    +      -       -      +
    708A  ILE*     3.4    10.7    +      -       -      +
----------------------------------------------------------
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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