IUBMB Enzyme Nomenclature

EC 3.2.1.57

Accepted name: isopullulanase

Reaction: Hydrolysis of pullulan to isopanose (6-α-maltosylglucose)

Glossary: pullulan = a linear polymer of (1→6)-linked maltotriose units

Systematic name: pullulan 4-glucanohydrolase (isopanose-forming)

Comments: The enzyme has practically no action on starch. Panose (4-α-isomaltosylglucose) is hydrolysed to isomaltose and glucose. cf. EC 3.2.1.41 (pullulanase) and EC 3.2.1.135 (neopullulanase).

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 37288-43-0

References:

1. Sakano, Y., Masuda, N. and Kobayashi, T. Hydrolysis of pullulan by a novel enzyme from Aspergillus niger. Agric. Biol. Chem. 35 (1971) 971-973.

[EC 3.2.1.57 created 1972]


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