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Isoprenoid biosynthesis: manifold chemistry catalyzed by similar enzymes Wendt KU; Schulz GEStructure 1998[Feb]; 6 (2): 127-33Isoprenoids comprise a family of more than 23,000 natural products, among them the precursors of cholesterol and taxol. The structures of three isoprenoid-cyclizing enzymes have recently been determined and here are placed in the greater context of isoprenoid biosynthesis. On the basis of reaction mechanisms, a subdivision into class I and class II enzymes is proposed. The chain folds of these enzymes also appear to fall into the same two distinct classes, suggesting that class I and class II enzymes have evolved separately.|Alkyl and Aryl Transferases/*chemistry[MESH]|Animals[MESH]|Isomerases/*chemistry[MESH]|Models, Chemical[MESH]|Models, Molecular[MESH]|Terpenes/*metabolism[MESH] |
