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2gq3

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{{STRUCTURE_2gq3| PDB=2gq3 | SCENE= }}
{{STRUCTURE_2gq3| PDB=2gq3 | SCENE= }}
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'''mycobacterium tuberculosis malate synthase in complex with magnesium, malate, and coenzyme A'''
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===mycobacterium tuberculosis malate synthase in complex with magnesium, malate, and coenzyme A===
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==Overview==
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Enzymes of the glyoxylate shunt have been implicated as virulence factors in several pathogenic organisms, notably Mycobacterium tuberculosis and Candida albicans. Malate synthase has thus emerged as a promising target for design of anti-microbial agents. For this effort, it is essential to have reliable models for enzyme:substrate complexes. A 2.7 Angstroms resolution crystal structure for M. tuberculosis malate synthase in the ternary complex with magnesium, malate, and coenzyme A has been previously described. However, some unusual aspects of malate and Mg(++) binding prompted an independent determination of the structure at 2.3 Angstroms resolution, in the presence of saturating concentrations of malate. The electron density map of the complex reveals the position and conformation of coenzyme A to be unchanged from that found in the previous study. However, the coordination of Mg(++) and orientation of bound malate within the active site are different. The revised position of bound malate is consistent with a reaction mechanism that does not require reorientation of the electrophilic substrate during the catalytic cycle, while the revised Mg(++) coordination is octahedral, as expected. The results should be useful in the design of malate synthase inhibitors.
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(as it appears on PubMed at http://www.pubmed.gov), where 16877713 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16877713}}
==About this Structure==
==About this Structure==
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[[Category: Coenzyme some]]
[[Category: Coenzyme some]]
[[Category: Tim barrel]]
[[Category: Tim barrel]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 05:23:30 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 06:40:00 2008''

Revision as of 03:40, 28 July 2008

Image:2gq3.png

Template:STRUCTURE 2gq3

mycobacterium tuberculosis malate synthase in complex with magnesium, malate, and coenzyme A

Template:ABSTRACT PUBMED 16877713

About this Structure

2GQ3 is a Single protein structure of sequence from Mycobacterium tuberculosis. Full crystallographic information is available from OCA.

Reference

The product complex of M. tuberculosis malate synthase revisited., Anstrom DM, Remington SJ, Protein Sci. 2006 Aug;15(8):2002-7. PMID:16877713

Page seeded by OCA on Mon Jul 28 06:40:00 2008

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