1n8w

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{{STRUCTURE_1n8w| PDB=1n8w | SCENE= }}
{{STRUCTURE_1n8w| PDB=1n8w | SCENE= }}
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'''Biochemical and Structural Studies of Malate Synthase from Mycobacterium tuberculosis'''
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===Biochemical and Structural Studies of Malate Synthase from Mycobacterium tuberculosis===
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==Overview==
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Establishment or maintenance of a persistent infection by Mycobacterium tuberculosis requires the glyoxylate pathway. This is a bypass of the tricarboxylic acid cycle in which isocitrate lyase and malate synthase (GlcB) catalyze the net incorporation of carbon during growth of microorganisms on acetate or fatty acids as the primary carbon source. The glcB gene from M. tuberculosis, which encodes malate synthase, was cloned, and GlcB was expressed in Escherichia coli. The influence of media conditions on expression in M. tuberculosis indicated that this enzyme is regulated differentially to isocitrate lyase. Purified GlcB had K(m) values of 57 and 30 microm for its substrates glyoxylate and acetyl coenzyme A, respectively, and was inhibited by bromopyruvate, oxalate, and phosphoenolpyruvate. The GlcB structure was solved to 2.1-A resolution in the presence of glyoxylate and magnesium. We also report the structure of GlcB in complex with the products of the reaction, coenzyme A and malate, solved to 2.7-A resolution. Coenzyme A binds in a bent conformation, and the details of its interactions are described, together with implications on the enzyme mechanism.
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(as it appears on PubMed at http://www.pubmed.gov), where 12393860 is the PubMed ID number.
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{{ABSTRACT_PUBMED_12393860}}
==About this Structure==
==About this Structure==
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[[Category: Tb structural genomics consortium]]
[[Category: Tb structural genomics consortium]]
[[Category: Tbsgc]]
[[Category: Tbsgc]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 02:14:24 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 11:01:25 2008''

Revision as of 08:01, 28 July 2008

Image:1n8w.png

Template:STRUCTURE 1n8w

Biochemical and Structural Studies of Malate Synthase from Mycobacterium tuberculosis

Template:ABSTRACT PUBMED 12393860

About this Structure

1N8W is a Single protein structure of sequence from Mycobacterium tuberculosis. Full crystallographic information is available from OCA.

Reference

Biochemical and structural studies of malate synthase from Mycobacterium tuberculosis., Smith CV, Huang CC, Miczak A, Russell DG, Sacchettini JC, Honer zu Bentrup K, J Biol Chem. 2003 Jan 17;278(3):1735-43. Epub 2002 Oct 21. PMID:12393860

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