Squalene-hopene cyclase, EC:5.4.99.17, catalyses the cyclisation of squalene into hopene in bacteria. This reaction is part of a cationic cyclisation cascade, which is homologous to a key step in cholesterol biosynthesis. This family is the C-terminal half of the molecule.

1: The structure of the membrane protein squalene-hopene cyclase at 2.0 A resolution. Wendt KU, Lenhart A, Schulz GE; J Mol Biol. 1999;286:175-187. PMID:9931258

2: Binding structures and potencies of oxidosqualene cyclase inhibitors with the homologous squalene-hopene cyclase. Lenhart A, Reinert DJ, Aebi JD, Dehmlow H, Morand OH, Schulz GE; J Med Chem. 2003;46:2083-2092. PMID:12747780

3: Subcellular localization of oxidosqualene cyclases from Arabidopsis thaliana, Trypanosoma cruzi, and Pneumocystis carinii expressed in yeast. Milla P, Viola F, Oliaro Bosso S, Rocco F, Cattel L, Joubert BM, LeClair RJ, Matsuda SP, Balliano G; Lipids. 2002;37:1171-1176. PMID:12617471