1gtt
From Proteopedia
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[[Category: multifunctional enzyme decarboxylase]] | [[Category: multifunctional enzyme decarboxylase]] | ||
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Revision as of 14:13, 5 November 2007
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CRYSTAL STRUCTURE OF HPCE
Overview
The structure of the bifunctional enzyme HpcE (OPET decarboxylase/HHDD, isomerase) from Escherichia coli shows that the protein consists of highly, similar N and C terminal halves. Sequence matches suggest that this fold, is widespread among different species, including man. Many of these, homologues are uncharacterized but apparently connected with the, metabolism of aromatic compounds. The domain shows similar topology to the, C terminal domain of fumarylacetoacetate hydrolase (FAH), a functionally, related enzyme, despite lacking significant overall sequence similarity., HpcE is known to catalyze two rather different reactions, and comparisons, with FAH allow some tentative conclusions to be drawn about the active, sites. Key mutations within the active site apparently allow enzymes with, this fold to carry out a variety chemical processes.
About this Structure
1GTT is a Single protein structure of sequence from Escherichia coli with CA as ligand. Structure known Active Site: CA1. Full crystallographic information is available from OCA.
Reference
The crystal structure of HpcE, a bifunctional decarboxylase/isomerase with a multifunctional fold., Tame JR, Namba K, Dodson EJ, Roper DI, Biochemistry. 2002 Mar 5;41(9):2982-9. PMID:11863436
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