3CGZ

Crystal Structure of Salmonella Sensor Kinase PhoQ catalytic domain

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.234 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 

Literature

The Hsp90 inhibitor radicicol interacts with the ATP-binding pocket of bacterial sensor kinase PhoQ.

Guarnieri, M.T., Zhang, L., Shen, J., Zhao, R.

(2008) J.Mol.Biol. 379: 82-93

  • DOI: 10.1016/j.jmb.2008.03.036
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • Sensor kinases in the bacterial two-component system share a unique ATP-binding Bergerat fold with the GHL (gyrase, Hsp90, and MutL) family of proteins. We demonstrated that selected GHL inhibitors bind to the catalytic domain of sensor kinase PhoQ ( ...

    Sensor kinases in the bacterial two-component system share a unique ATP-binding Bergerat fold with the GHL (gyrase, Hsp90, and MutL) family of proteins. We demonstrated that selected GHL inhibitors bind to the catalytic domain of sensor kinase PhoQ (PhoQcat) using NMR chemical shift perturbation experiments. Using crystallographic approaches, we show that radicicol (an Hsp90 inhibitor) binds and interacts specifically with residues in the ATP-binding pocket of PhoQ. The interaction between radicicol and PhoQcat demonstrates significant similarities as well as differences compared to AMPPNP (a non-hydrolyzable ATP analog) bound to PhoQcat and radicicol bound to Hsp90. Our results suggest that GHL inhibitors may be useful lead compounds for developing sensor kinase inhibitors.

    Organizational Affiliation: 

    Department of Biochemistry and Molecular Genetics, University of Colorado Denver Anschutz Medical Campus, Aurora, CO 80045, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Virulence sensor histidine kinase phoQ
A, B, C
157Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)Mutation(s): 0 
Gene Names: phoQ (phoZ)
EC: 2.7.13.3, 3.1.3.-
Find proteins for P0DM80 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Go to UniProtKB:  P0DM80
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.234 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 88.121α = 90.00
b = 64.287β = 119.58
c = 85.945γ = 90.00
Software Package:
Software NamePurpose
d*TREKdata scaling
PDB_EXTRACTdata extraction
CNSrefinement
d*TREKdata reduction
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-05-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance