4DLP

Crystal structure of methionyl-tRNA synthetase MetRS from Brucella melitensis bound to selenomethionine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Brucella melitensis Methionyl-tRNA-Synthetase (MetRS), a Potential Drug Target for Brucellosis.

Ojo, K.K.Ranade, R.M.Zhang, Z.Dranow, D.M.Myers, J.B.Choi, R.Nakazawa Hewitt, S.Edwards, T.E.Davies, D.R.Lorimer, D.Boyle, S.M.Barrett, L.K.Buckner, F.S.Fan, E.Van Voorhis, W.C.

(2016) Plos One 11: e0160350-e0160350

  • DOI: 10.1371/journal.pone.0160350
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • We investigated Brucella melitensis methionyl-tRNA-synthetase (BmMetRS) with molecular, structural and phenotypic methods to learn if BmMetRS is a promising target for brucellosis drug development. Recombinant BmMetRS was expressed, purified from wil ...

    We investigated Brucella melitensis methionyl-tRNA-synthetase (BmMetRS) with molecular, structural and phenotypic methods to learn if BmMetRS is a promising target for brucellosis drug development. Recombinant BmMetRS was expressed, purified from wild type Brucella melitensis biovar Abortus 2308 strain ATCC/CRP #DD-156 and screened by a thermal melt assay against a focused library of one hundred previously classified methionyl-tRNA-synthetase inhibitors of the blood stage form of Trypanosoma brucei. Three compounds showed appreciable shift of denaturation temperature and were selected for further studies on inhibition of the recombinant enzyme activity and cell viability against wild type B. melitensis strain 16M. BmMetRS protein complexed with these three inhibitors resolved into three-dimensional crystal structures and was analyzed. All three selected methionyl-tRNA-synthetase compounds inhibit recombinant BmMetRS enzymatic functions in an aminoacylation assay at varying concentrations. Furthermore, growth inhibition of B. melitensis strain 16M by the compounds was shown. Inhibitor-BmMetRS crystal structure models were used to illustrate the molecular basis of the enzyme inhibition. Our current data suggests that BmMetRS is a promising target for brucellosis drug development. However, further studies are needed to optimize lead compound potency, efficacy and safety as well as determine the pharmacokinetics, optimal dosage, and duration for effective treatment.


    Organizational Affiliation

    Beryllium, Bainbridge Island, Washington, United States of America.,Center for Emerging and Re-emerging Infectious Diseases (CERID), Department of Medicine, Division of Allergy and Infectious Diseases, University of Washington, Seattle, Washington, United States of America.,Department of Biochemistry, University of Washington, Seattle, Washington, United States of America.,Center for Molecular Medicine and Infectious Diseases, Department of Biomedical Sciences and Pathobiology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, United States of America.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Aminoacyl-tRNA synthetase, class I:Aminoacyl-tRNA synthetase, class Ia:Methionyl-tRNA synthetase, class Ia
A, B, C
536Brucella abortus (strain 2308)Mutation(s): 0 
Gene Names: metG
EC: 6.1.1.10
Find proteins for Q2YQ76 (Brucella abortus (strain 2308))
Go to UniProtKB:  Q2YQ76
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MSE
Query on MSE

Download SDF File 
Download CCD File 
A, B, C
SELENOMETHIONINE
C5 H11 N O2 Se
RJFAYQIBOAGBLC-BYPYZUCNSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 116.250α = 90.00
b = 77.620β = 119.67
c = 116.270γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-02-15
    Type: Initial release
  • Version 1.1: 2016-08-17
    Type: Database references