Yin J, Garen G, Garen C, James MNG. Expression, purification and preliminary crystallographic analysis of Rv3002c, the regulatory subunit of acetolactate synthase (IlvH) from Mycobacterium tuberculosis.
Acta Crystallogr Sect F Struct Biol Cryst Commun 2011;
67:933-6. [PMID:
21821899 DOI:
10.1107/s1744309111021105]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Accepted: 06/01/2011] [Indexed: 11/10/2022]
Abstract
Branched amino-acid biosynthesis is important to bacterial pathogens such as Mycobacterium tuberculosis (Mtb), a microorganism that presently causes more deaths in humans than any other prokaryotic pathogen (http://www.who.int/tb). In this study, the molecular cloning, expression, purification, crystallization and preliminary crystallographic analysis of recombinant IlvH, the small regulatory subunit of acetohydroxylic acid synthase (AHAS) in Mtb, are reported. AHAS carries out the first common reaction in the biosynthesis of valine, leucine and isoleucine. AHAS is an essential enzyme in Mtb and its inactivation leads to a lethal phenotype [Sassetti et al. (2001), Proc. Natl Acad. Sci. USA, 98, 12712-12717]. Thus, inhibitors of AHAS could potentially be developed into novel anti-Mtb therapies.
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