IUBMB Enzyme Nomenclature


Accepted name: β-diketone hydrolase

Reaction: nonane-4,6-dione + H2O = pentan-2-one + butanoate

Other name(s): oxidized PVA hydrolase

Systematic name: nonane-4,6-dione acylhydrolase

Comments: Also acts on the product of the action of EC secondary-alcohol oxidase, on polyvinyl alcohols; involved in the bacterial degradation of polyvinyl alcohol.

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number: 97955-12-9


1. Sakai, K., Hamada, N. and Watanabe, Y. Separation of secondary alcohol oxidase and oxidized poly(vinyl alcohol) hydrolase by hydrophobic and dye-ligand chromatographies. Agric. Biol. Chem. 47 (1983) 153-155.

2. Sakai, K., Hamada, N. and Watanabe, Y. A new enzyme, β-diketone hydrolase: a component of a poly(vinyl alcohol)-degrading enzyme preparation. Agric. Biol. Chem. 49 (1985) 1901-1902.

[EC created 1989]

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