Lupeol synthase (EC 5.4.99.41, LUPI, BPW, RcLUS) is an enzyme with systematic name (3S)-2,3-epoxy-2,3-dihydrosqualene mutase (cyclizing, lupeol-forming).
[1][2][3][4][5][6][7] This enzyme catalyses the following chemical reaction Also forms some beta-amyrin.