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 
  • R-Value Observed: 0.199 

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:  
    4DLP, 4PY2, 5K0S, 5K0T

  • 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 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 ...

    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

    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.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Aminoacyl-tRNA synthetase, class I:Aminoacyl-tRNA synthetase, class Ia:Methionyl-tRNA synthetase, class IaA, B, C536Brucella abortus 2308Mutation(s): 0 
Gene Names: BAB1_1014metG
EC: 6.1.1.10
UniProt
Find proteins for Q2YQ76 (Brucella abortus (strain 2308))
Explore Q2YQ76 
Go to UniProtKB:  Q2YQ76
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MSE (Subject of Investigation/LOI)
Query on MSE

Download Ideal Coordinates CCD File 
D [auth A], E [auth B], F [auth C]SELENOMETHIONINE
C5 H11 N O2 Se
RJFAYQIBOAGBLC-BYPYZUCNSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 116.25α = 90
b = 77.62β = 119.67
c = 116.27γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

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