4PH6

Structure of 3-Dehydroquinate Dehydratase from Enterococcus faecalis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.189 

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Literature

Identification of Polyketide Inhibitors Targeting 3-Dehydroquinate Dehydratase in the Shikimate Pathway of Enterococcus faecalis

Cheung, V.W.Xue, B.Hernandez-Valladares, M.Go, M.K.Tung, A.Aguda, A.H.Robinson, R.C.Yew, W.S.

(2014) PLoS One 9: e103598-e103598

  • DOI: 10.1371/journal.pone.0103598
  • Primary Citation of Related Structures:  
    4PH6

  • PubMed Abstract: 
  • Due to the emergence of resistance toward current antibiotics, there is a pressing need to develop the next generation of antibiotics as therapeutics against infectious and opportunistic diseases of microbial origins. The shikimate pathway is exclusive to microbes, plants and fungi, and hence is an attractive and logical target for development of antimicrobial therapeutics ...

    Due to the emergence of resistance toward current antibiotics, there is a pressing need to develop the next generation of antibiotics as therapeutics against infectious and opportunistic diseases of microbial origins. The shikimate pathway is exclusive to microbes, plants and fungi, and hence is an attractive and logical target for development of antimicrobial therapeutics. The Gram-positive commensal microbe, Enterococcus faecalis, is a major human pathogen associated with nosocomial infections and resistance to vancomycin, the "drug of last resort". Here, we report the identification of several polyketide-based inhibitors against the E. faecalis shikimate pathway enzyme, 3-dehydroquinate dehydratase (DHQase). In particular, marein, a flavonoid polyketide, both inhibited DHQase and retarded the growth of Enterococcus faecalis. The purification, crystallization and structural resolution of recombinant DHQase from E. faecalis (at 2.2 Å resolution) are also reported. This study provides a route in the development of polyketide-based antimicrobial inhibitors targeting the shikimate pathway of the human pathogen E. faecalis.


    Organizational Affiliation

    Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore; Synthetic Biology Research Consortium, National University of Singapore, Singapore, Singapore.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
3-dehydroquinate dehydrataseA, B256Enterococcus faecalis V583Mutation(s): 0 
Gene Names: aroDebsDEF_1731
EC: 4.2.1.10
UniProt
Find proteins for P36923 (Enterococcus faecalis (strain ATCC 700802 / V583))
Explore P36923 
Go to UniProtKB:  P36923
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.189 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 42.973α = 108.07
b = 48.288β = 92.86
c = 67.429γ = 111.83
Software Package:
Software NamePurpose
PROTEUM PLUSdata collection
SAINTdata processing
PROTEUM PLUSdata scaling
PHASERphasing
PHENIXrefinement
PHASERmodel building

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-09-17
    Type: Initial release