... Authors Journal compilation ª 2006 FEBS 959 Identification of b-amyrin and sophoradiol 24-hydroxylase by expressed sequence tag mining and functional expression assay Masaaki Shibuya1, Masaki Hoshino1, ... range of structural diversity produced by a sequence of biosynthetic reactions. Cyclization of oxidosqualene is the ini-tial origin of structural diversity of skeletons in their biosynthesis, and ... b,24-diol and soyasapogenol B, respectively, by GC-MS. Co -expression of CYP93E1 and b-amyrin synthase in S. cerevisiae yielded olean-12-ene-3b,24-diol. Thisis the first identification of triterpene...