ID   4.2.2.13
DE   exo-(1->4)-alpha-D-glucan lyase.
AN   alpha-1,4-glucan 1,5-anhydro-D-fructose eliminase.
AN   alpha-1,4-glucan exo-lyase.
AN   alpha-1,4-glucan lyase.
AN   exo-(1,4)-alpha-D-glucan lyase.
AN   exo-alpha-1,4-glucan lyase.
CA   linear alpha-glucan = (n-1) 1,5-anhydro-D-fructose + D-glucose.
CC   -!- Catalyzes the sequential degradation of (1->4)-alpha-D-glucans from
CC       the non-reducing end with the release of 1,5-anhydro-D-fructose.
CC   -!- Thus, for an alpha-glucan containing n (1->4)-linked glucose units,
CC       the final products are 1 glucose plus (n-1) 1,5-anhydro-D-fructose.
CC   -!- Maltose, maltosaccharides and amylose are all completely degraded.
CC   -!- Does not degrade (1->6)-alpha-gucosidic bonds and thus the
CC       degradation of a branched glucan, such as amylopectin or glycogen,
CC       will result in the formation of 1,5-anhydro-D-fructose plus a limit
CC       dextrin.
CC   -!- Other enzymes involved in the anhydrofructose pathway are
CC       EC 4.2.1.110, EC 4.2.1.111 and EC 5.3.2.7.
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