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1gp5

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{{STRUCTURE_1gp5| PDB=1gp5 | SCENE= }}
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'''ANTHOCYANIDIN SYNTHASE FROM ARABIDOPSIS THALIANA COMPLEXED WITH TRANS-DIHYDROQUERCETIN'''
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===ANTHOCYANIDIN SYNTHASE FROM ARABIDOPSIS THALIANA COMPLEXED WITH TRANS-DIHYDROQUERCETIN===
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==Overview==
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Flavonoids are common colorants in plants and have long-established biomedicinal properties. Anthocyanidin synthase (ANS), a 2-oxoglutarate iron-dependent oxygenase, catalyzes the penultimate step in the biosynthesis of the anthocyanin class of flavonoids. The crystal structure of ANS reveals a multicomponent active site containing metal, cosubstrate, and two molecules of a substrate analog (dihydroquercetin). An additional structure obtained after 30 min exposure to dioxygen is consistent with the oxidation of the dihydroquercetin to quercetin and the concomitant decarboxylation of 2-oxoglutarate to succinate. Together with in vitro studies, the crystal structures suggest a mechanism for ANS-catalyzed anthocyanidin formation from the natural leucoanthocyanidin substrates involving stereoselective C-3 hydroxylation. The structure of ANS provides a template for the ubiquitous family of plant nonhaem oxygenases for future engineering and inhibition studies.
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(as it appears on PubMed at http://www.pubmed.gov), where 11796114 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11796114}}
==About this Structure==
==About this Structure==
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[[Category: 2-oxoglutarate dependent dioxygenase]]
[[Category: 2-oxoglutarate dependent dioxygenase]]
[[Category: Flavonoid biosynthesis]]
[[Category: Flavonoid biosynthesis]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 05:37:59 2008''

Revision as of 02:38, 1 July 2008

Image:1gp5.png

Template:STRUCTURE 1gp5

ANTHOCYANIDIN SYNTHASE FROM ARABIDOPSIS THALIANA COMPLEXED WITH TRANS-DIHYDROQUERCETIN

Template:ABSTRACT PUBMED 11796114

About this Structure

1GP5 is a Single protein structure of sequence from Arabidopsis thaliana. Full crystallographic information is available from OCA.

Reference

Structure and mechanism of anthocyanidin synthase from Arabidopsis thaliana., Wilmouth RC, Turnbull JJ, Welford RW, Clifton IJ, Prescott AG, Schofield CJ, Structure. 2002 Jan;10(1):93-103. PMID:11796114

Page seeded by OCA on Tue Jul 1 05:37:59 2008

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