Shionone synthase explained

Shionone synthase
Ec Number:	5.4.99.46

Shionone synthase is an enzyme with systematic name (3S)-2,3-epoxy-2,3-dihydrosqualene mutase (cyclizing, shionone-forming).^[1] This enzyme catalyses the following chemical reaction

(3S)-2,3-epoxy-2,3-dihydrosqualene

\rightleftharpoons shionone

The enzyme gives traces of four other triterpenoids

Notes and References

1. Sawai S, Uchiyama H, Mizuno S, Aoki T, Akashi T, Ayabe S, Takahashi T . Molecular characterization of an oxidosqualene cyclase that yields shionone, a unique tetracyclic triterpene ketone of Aster tataricus . FEBS Letters . 585 . 7 . 1031–6 . April 2011 . 21377465 . 10.1016/j.febslet.2011.02.037 . free .