Publications by authors named "Hickman Y"

Adenosine 5'-phosphosulfate (APS) kinase (ATP:APS 3'-phosphotransferase) catalyzes the ultimate step in the biosynthesis of 3'-phosphoadenosine 5'-phosphosulfate (PAPS), the primary biological sulfuryl donor. APS kinase from Escherichia coli is phosphorylated upon incubation with ATP, yielding a protein that can complete the overall reaction through phosphorylation of APS. Rapid-quench kinetic experiments show that, in the absence of APS, ATP phosphorylates the enzyme with a rate constant of 46 s-1, which is equivalent to the Vmax for the overall APS kinase reaction.

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