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Department of Biological and Chemical Sciences, Wells College, Aurora, New York 13026,1 Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 148532
Received 2 August 2006/ Accepted 21 December 2006
The thioquinolobactin siderophore from Pseudomonas fluorescens ATCC 17400 utilizes a variation of the sulfur transfer chemistry found in thiamine and molydobterin biosynthesis. A JAMM motif protein cleaves the C-terminal amino acid residues following a diglycine moiety on a small sulfur carrier protein, and the modified C terminus is activated and sulfurylated, forming a thiocarboxylate.
Published ahead of print on 5 January 2007.
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