Coenzyme A (CoA-SH) in serum can be hydrolysed by ectonucleotide pyrophosphatases (ENPPs) (Goding et al. 2003), which have pantothenate kinase activity. The products of this are adenosine 3',5'-bismonophosphate (PAP) and 4′-phosphopantetheine (PPANT), which is able to translocate into cells providing an alternative source for intracellular coenzyme A biosynthesis (Srinivasan et al. 2015).
Goding, JW, Slegers, H, Grobben, B
hydrolase activity of 2xENPP1, 2xENPP2, 2xENPP3 [plasma membrane]
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