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EC 5.3.2.7 Details
EC number
5.3.2.7
Accepted name
ascopyrone tautomerase
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
Other name(s)
ascopyrone isomerase,
ascopyrone intramolecular oxidoreductase,
1,5-anhydro-D-glycero-hex-3-en-2-ulose tautomerase,
APM tautomerase,
ascopyrone P tautomerase,
APTM
Systematic name
1,5-anhydro-4-deoxy-D-glycero-hex-3-en-2-ulose Δ3-Δ1-isomerase
Comment
This enzyme catalyses one of the steps in the anhydrofructose pathway, which leads to the degradation of glycogen and starch via 1,5-anhydro-D-fructose [1,2]. The other enzymes involved in this pathway are EC 4.2.1.110 (aldos-2-ulose dehydratase), EC 4.2.1.111 (1,5-anhydro-D-fructose dehydratase) and EC 4.2.2.13 [exo-(1→4)-α-D-glucan lyase]. Ascopyrone P is an anti-oxidant [2].
History
created 2006 as EC 5.3.3.15, transferred 2012 to EC 5.3.2.7
EC Tree
1.14.11.5 created 1972, deleted 1976