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Crystal Structure Analysis of the anthranilate phosphoribosyltransferase from Erwinia carotovora at 1.9 resolution (current name, Pectobacterium carotovorum)Crystal Structure Analysis of the anthranilate phosphoribosyltransferase from Erwinia carotovora at 1.9 resolution (current name, Pectobacterium carotovorum)
Structural highlights
FunctionQ8VP84_PECCA Catalyzes the transfer of the phosphoribosyl group of 5-phosphorylribose-1-pyrophosphate (PRPP) to anthranilate to yield N-(5'-phosphoribosyl)-anthranilate (PRA).[HAMAP-Rule:MF_00211][SAAS:SAAS00083122] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe structure of anthranilate phosphoribosyltransferase from the enterobacterium Pectobacterium carotovorum has been solved at 2.4 A in complex with Mn(2+)-pyrophosphate, and at 1.9 A without ligands. The enzyme structure has a novel phosphoribosyltransferase (PRT) fold and displays close homology to the structures of pyrimidine nucleoside phosphorylases. The enzyme is a homodimer with a monomer of 345 residues. Each monomer consists of two subdomains, alpha and alpha/beta, which form a cleft containing the active site. The nature of the active site is inferred from the trapped MnPPi complex and detailed knowledge of the active sites of nucleoside phosphorylases. With the anthranilate (An)PRT structure solved, the structures of all the enzymes required for tryptophan biosynthesis are now known. The crystal structure of anthranilate phosphoribosyltransferase from the enterobacterium Pectobacterium carotovorum.,Kim C, Xuong NH, Edwards S, Madhusudan, Yee MC, Spraggon G, Mills SE FEBS Lett. 2002 Jul 17;523(1-3):239-46. PMID:12123839[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences |
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