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Acta Crystallogr D Biol Crystallogr. 2003 Jan;59(Pt 1):168-70. Epub 2002 Dec 19.

SseA, a 3-mercaptopyruvate sulfurtransferase from Escherichia coli: crystallization and preliminary crystallographic data.

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  • 1Dipartimento di Fisica, infM, Centro di Eccellenza per la Ricerca Biomedica, Universita' di Genova, Via Dodecaneso 33, 16146 Genova, Italy.

Abstract

SseA, the translation product of the Escherichia coli sseA gene, is a 31 kDa protein endowed with 3-mercaptopyruvate:cyanide sulfurtransferase activity in vitro. As such, SseA is the prototype of a sulfurtransferase subfamily distinguished from the better known rhodanese sulfurtransferases, which display thiosulfate:cyanide sulfurtransferase activity. The physiological role of the two homologous enzyme families, whose catalytic activity is centred on a reactive invariant cysteine, is a matter of debate. In this framework, the forthcoming crystal structure analysis of SseA will be based on the tetragonal crystal form (space group P4(1) or P4(3)) reported here, with unit-cell parameters a = b = 150.2, c = 37.9 A.

PMID:
12499560
[PubMed - indexed for MEDLINE]
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