1ush
From Proteopedia
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[[Category: udp-sugar hydrolase]] | [[Category: udp-sugar hydrolase]] | ||
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Revision as of 15:05, 5 November 2007
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5'-NUCLEOTIDASE FROM E. COLI
Overview
The crystal structure of 5'-nucleotidase (5'-NT) from E. coli, also known, as UDP-sugar hydrolase, has been determined at 1.7 A resolution. Two zinc, ions are present in the active site, which is located in a cleft between, two domains. The dimetal center and a catalytic Asp-His dyad are the main, players in the catalytic mechanism. Structure-based sequence comparisons, show that the structure also provides a model for animal 5'-NTs, which, together with other ectonucleotidases terminate the action of nucleotides, as extracellular signaling substances in the nervous system.
About this Structure
1USH is a Single protein structure of sequence from Escherichia coli with ZN, CO3 and SO4 as ligands. Active as 5'-nucleotidase, with EC number 3.1.3.5 Structure known Active Site: ZNB. Full crystallographic information is available from OCA.
Reference
X-ray structure of the Escherichia coli periplasmic 5'-nucleotidase containing a dimetal catalytic site., Knofel T, Strater N, Nat Struct Biol. 1999 May;6(5):448-53. PMID:10331872
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