EC 3.2.1.2 - β-amylase

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IntEnz Enzyme Nomenclature
EC 3.2.1.2

Names

Accepted name:
β-amylase
Other names:
β amylase
beta-amylase
glycogenase
saccharogen amylase
1,4-α-D-glucan maltohydrolase
Systematic name:
4-α-D-glucan maltohydrolase

Reaction

Comments:

Acts on starch, glycogen and related polysaccharides and oligosaccharides producing β-maltose by an inversion. The term "β" relates to the initial anomeric configuration of the free sugar group released and not to the configuration of the linkage hydrolysed.

Links to other databases

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , NIST 74 , UniPathway
Protein domains and families: PROSITE:PDOC00414
Structural data: CSA , EC2PDB
Gene Ontology: GO:0016161
CAS Registry Number: 9000-91-3
UniProtKB/Swiss-Prot: (22) [show] [UniProt]

References

  1. Balls, A.K., Walden, M.K. and Thompson, R.R.
    A crystalline β-amylase from sweet potatoes.
    J. Biol. Chem. 173: 9-19 (1948).
  2. French, D.
    β-Amylases.
    In: Boyer, P.D., Lardy, H. and Myrbäck, K. (Eds.) The Enzymes, 2nd ed. vol. 4, Academic Press, New York, 1960, 345-368
  3. Manners, D.J.
    Enzymic synthesis and degradation of starch and glycogen.
    Adv. Carbohydr. Chem. 17: 371-430 (1962).

[EC 3.2.1.2 created 1961]