IUBMB Enzyme Nomenclature


Accepted name: shionone synthase

Reaction: (3S)-2,3-epoxy-2,3-dihydrosqualene = shionone

For diagram of reaction click here.

Systematic name: (3S)-2,3-epoxy-2,3-dihydrosqualene mutase (cyclizing, shionone-forming)

Comments: The enzyme gives traces of four other triterpenoids

Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number:


1. Sawai, S., Uchiyama, H., Mizuno, S., Aoki, T., Akashi, T., Ayabe, S. and Takahashi, T. Molecular characterization of an oxidosqualene cyclase that yields shionone, a unique tetracyclic triterpene ketone of Aster tataricus. FEBS Lett. 585 (2011) 1031-1036. [PMID: 21377465]

[EC created 2011]

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