2a8x

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{{STRUCTURE_2a8x| PDB=2a8x | SCENE= }}
{{STRUCTURE_2a8x| PDB=2a8x | SCENE= }}
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'''Crystal Structure of Lipoamide Dehydrogenase from Mycobacterium tuberculosis'''
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===Crystal Structure of Lipoamide Dehydrogenase from Mycobacterium tuberculosis===
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==Overview==
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We report the 2.4 A crystal structure for lipoamide dehydrogenase encoded by lpdC from Mycobacterium tuberculosis. Based on the Lpd structure and sequence alignment between bacterial and eukaryotic Lpd sequences, we generated single point mutations in Lpd and assayed the resulting proteins for their ability to catalyze lipoamide reduction/oxidation alone and in complex with other proteins that participate in pyruvate dehydrogenase and peroxidase activities. The results suggest that amino acid residues conserved in mycobacterial species but not conserved in eukaryotic Lpd family members modulate either or both activities and include Arg-93, His-98, Lys-103, and His-386. In addition, Arg-93 and His-386 are involved in forming both "open" and "closed" active site conformations, suggesting that these residues play a role in dynamically regulating Lpd function. Taken together, these data suggest protein surfaces that should be considered while developing strategies for inhibiting this enzyme.
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(as it appears on PubMed at http://www.pubmed.gov), where 16093239 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16093239}}
==About this Structure==
==About this Structure==
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[[Category: Mycobacterium tuberculosis]]
[[Category: Mycobacterium tuberculosis]]
[[Category: Pyruvate dehydrogenase]]
[[Category: Pyruvate dehydrogenase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 13:52:08 2008''

Revision as of 10:52, 27 July 2008

Template:STRUCTURE 2a8x

Crystal Structure of Lipoamide Dehydrogenase from Mycobacterium tuberculosis

Template:ABSTRACT PUBMED 16093239

About this Structure

2A8X is a Single protein structure of sequence from Mycobacterium tuberculosis. Full crystallographic information is available from OCA.

Reference

Crystal structure and functional analysis of lipoamide dehydrogenase from Mycobacterium tuberculosis., Rajashankar KR, Bryk R, Kniewel R, Buglino JA, Nathan CF, Lima CD, J Biol Chem. 2005 Oct 7;280(40):33977-83. Epub 2005 Aug 10. PMID:16093239

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