The Enzyme Database

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EC 2.7.1.169     
Accepted name: pantoate kinase
Reaction: ATP + (R)-pantoate = ADP + (R)-4-phosphopantoate
Other name(s): PoK; TK2141 protein
Systematic name: ATP:(R)-pantoate 4-phosphotransferase
Comments: The conversion of (R)-pantoate to (R)-4′-phosphopantothenate is part of the pathway leading to biosynthesis of 4′-phosphopantetheine, an essential cofactor of coenzyme A and acyl-carrier protein. In bacteria and eukaryotes this conversion is performed by condensation with β-alanine, followed by phosphorylation (EC 6.3.2.1 and EC 2.7.1.33, respectively). In archaea the order of these two steps is reversed, and phosphorylation precedes condensation with β-alanine.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Yokooji, Y., Tomita, H., Atomi, H. and Imanaka, T. Pantoate kinase and phosphopantothenate synthetase, two novel enzymes necessary for CoA biosynthesis in the Archaea. J. Biol. Chem. 284 (2009) 28137–28145. [PMID: 19666462]
[EC 2.7.1.169 created 2011]
 
 


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