ID 5.4.99.53 DE marneral synthase. CA (S)-2,3-epoxysqualene = marneral. CC -!- Marneral is a triterpenoid formed by Grob fragmentation of the A ring CC of 2,3-epoxy-2,3-dihydrosqualene during cyclization. DR Q9FJV8, PEN5_ARATH ; //