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 22.214.171.124 (aldos-2-ulose dehydratase), EC 126.96.36.199 (1,5-anhydro-D-fructose dehydratase) and EC 188.8.131.52 [exo-(1->4)-alpha-D-glucan lyase]. Ascopyrone P is an anti-oxidant .
EC 184.108.40.206 created 2006 as EC 220.127.116.11, transferred 2012 to EC 18.104.22.168
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.