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1o8u

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{{STRUCTURE_1o8u| PDB=1o8u | SCENE= }}
{{STRUCTURE_1o8u| PDB=1o8u | SCENE= }}
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'''THE 2 ANGSTROM STRUCTURE OF 6-OXO CAMPHOR HYDROLASE: NEW STRUCTURAL DIVERSITY IN THE CROTONASE SUPERFAMILY'''
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===THE 2 ANGSTROM STRUCTURE OF 6-OXO CAMPHOR HYDROLASE: NEW STRUCTURAL DIVERSITY IN THE CROTONASE SUPERFAMILY===
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==Overview==
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6-Oxo camphor hydrolase (OCH) is an enzyme of the crotonase superfamily that catalyzes carbon-carbon bond cleavage in bicyclic beta-diketones via a retro-Claisen reaction (Grogan, G., Roberts, G. A., Bougioukou, D., Turner, N. J., and Flitsch, S. L. (2001) J. Biol. Chem. 276, 12565-12572). The native structure of OCH has been solved at 2.0-A resolution with selenomethionine multiple wave anomalous dispersion and refined to a final R(free) of 19.0. The structure of OCH consists of a dimer of trimers that resembles the "parent" enzyme of the superfamily, enoyl-CoA hydratase. In contrast to enoyl-CoA hydratase, however, two octahedrally coordinated sodium atoms are found at the 3-fold axis of the hexamer of OCH, and the C-terminal helix of OCH does not form a discrete domain. Models of the substrate, 6-oxo camphor, and a proposed enolate intermediate in the putative active site suggest possible mechanistic roles for Glu-244, Asp-154, His-122, His-45, and His-145.
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(as it appears on PubMed at http://www.pubmed.gov), where 12421807 is the PubMed ID number.
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{{ABSTRACT_PUBMED_12421807}}
==About this Structure==
==About this Structure==
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[[Category: Rhodococcuse]]
[[Category: Rhodococcuse]]
[[Category: Terpene metabolism]]
[[Category: Terpene metabolism]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 03:31:54 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 13:07:12 2008''

Revision as of 10:07, 29 July 2008

Template:STRUCTURE 1o8u

THE 2 ANGSTROM STRUCTURE OF 6-OXO CAMPHOR HYDROLASE: NEW STRUCTURAL DIVERSITY IN THE CROTONASE SUPERFAMILY

Template:ABSTRACT PUBMED 12421807

About this Structure

1O8U is a Single protein structure of sequence from Rhodococcus erythropolis. Full crystallographic information is available from OCA.

Reference

The 2-A crystal structure of 6-oxo camphor hydrolase. New structural diversity in the crotonase superfamily., Whittingham JL, Turkenburg JP, Verma CS, Walsh MA, Grogan G, J Biol Chem. 2003 Jan 17;278(3):1744-50. Epub 2002 Nov 5. PMID:12421807

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