Ascopyrone tautomerase

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Ascopyrone tautomerase
EC number
IntEnz IntEnz view
ExPASy NiceZyme view
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

In enzymology, an ascopyrone tautomerase (EC is an enzyme that catalyzes the chemical reaction

1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose 1,5-anhydro-4-deoxy-D-glycero-hex-1-en-3-ulose

Hence, this enzyme has one substrate, 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose, and one product, 1,5-anhydro-4-deoxy-D-glycero-hex-1-en-3-ulose.

The enzyme is involved with the anhydrofructose pathway.[1]

This enzyme belongs to the family of isomerases, specifically those intramolecular oxidoreductases interconverting keto- and enol-groups. The systematic name of this enzyme class is 1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose Delta3-Delta1-isomerase. Other names in common use include ascopyrone isomerase, ascopyrone intramolecular oxidoreductase, 1,5-anhydro-D-glycero-hex-3-en-2-ulose tautomerase, APM tautomerase, ascopyrone P tautomerase, and APTM.

See also[edit]


  • Yu S, Refdahl C, Lundt I (2004). "Enzymatic description of the anhydrofructose pathway of glycogen degradation; I. Identification and purification of anhydrofructose dehydratase, ascopyrone tautomerase and alpha-1,4-glucan lyase in the fungus Anthracobia melaloma". Biochim. Biophys. Acta. 1672 (2): 120&ndash, 9. doi:10.1016/j.bbagen.2004.03.004. PMID 15110094.
  • Yu S, Fiskesund R (2006). "The anhydrofructose pathway and its possible role in stress response and signaling". Biochim. Biophys. Acta. 1760 (9): 1314&ndash, 22. doi:10.1016/j.bbagen.2006.05.007. PMID 16822618.