Accepted name: friedelin synthase
Reaction: (3S)-2,3-epoxy-2,3-dihydrosqualene = friedelin
Systematic name: (3S)-2,3-epoxy-2,3-dihydrosqualene mutase (cyclizing, friedelin-forming)
Comments: The enzyme from Kalanchoe daigremontiana also gives traces of other triterpenoids.
1.  Wang, Z., Yeats, T., Han, H. and Jetter, R. Cloning and characterization of oxidosqualene cyclases from Kalanchoe daigremontiana: enzymes catalyzing up to 10 rearrangement steps yielding friedelin and other triterpenoids. J. Biol. Chem. 285 (2010) 29703–29712. [PMID: 20610397]
[EC created 2011]