IUBMB Enzyme Nomenclature


Accepted name: AMP phosphorylase

Reaction: (1) AMP + phosphate = adenine + α-D-ribose 1,5-bisphosphate
(2) CMP + phosphate = cytosine + α-D-ribose 1,5-bisphosphate
(3) UMP + phosphate = uracil + α-D-ribose 1,5-bisphosphate

For diagram of reaction click here.

Other name(s): AMPpase; nucleoside monophosphate phosphorylase; deoA (gene name)

Systematic name: AMP:phosphate α-D-ribosyl 5'-phosphate-transferase

Comments: The enzyme from archaea is involved in AMP metabolism and CO2 fixation through type III RubisCO enzymes. The activity with CMP and UMP requires activation by cAMP [2].

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number:


1. Sato, T., Atomi, H. and Imanaka, T. Archaeal type III RuBisCOs function in a pathway for AMP metabolism. Science 315 (2007) 1003-1006. [PMID: 17303759]

2. Aono, R., Sato, T., Yano, A., Yoshida, S., Nishitani, Y., Miki, K., Imanaka, T. and Atomi, H. Enzymatic characterization of AMP phosphorylase and ribose-1,5-bisphosphate isomerase functioning in an archaeal AMP metabolic pathway. J. Bacteriol. 194 (2012) 6847-6855. [PMID: 23065974]

3. Nishitani, Y., Aono, R., Nakamura, A., Sato, T., Atomi, H., Imanaka, T. and Miki, K. Structure analysis of archaeal AMP phosphorylase reveals two unique modes of dimerization. J. Mol. Biol. (2013) . [PMID: 23659790]

[EC created 2014]

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