title: Current development in isoprenoid precursor biosynthesis and regulation.
abstract: Isoprenoids are one of the largest classes of natural products and all of them are constructed from two precursors, isopentenyl diphosphate (IPP) and its isomer dimethylallyl diphosphate (DMAPP). For decades, the mevalonic acid (MVA) pathway was proposed to be the only IPP and DMAPP biosynthetic pathway. This review summarizes the newly discovered IPP and DMAPP production pathways since late 1990s, their distribution among different kingdoms, and their roles in secondary metabolite production. These new IPP and DMAPP production pathways include the methylerythritol phosphate (MEP) pathway, a modified MVA pathway, and the 5-methylthioadenosine shunt pathway. Relative to the studies on the MVA pathway, information on the MEP pathway regulation is limited and the mechanistic details of several of its novel transformations remain to be addressed. Current status on both MEP pathway regulation and mechanistic issues is also presented.
authors.affiliation: Division of Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, Austin, TX 78712, United States.
authors.forename: Wei-chen
authors.initials: WC
authors.lastname: Chang
authors.forename: Heng
authors.initials: H
authors.lastname: Song
authors.forename: Hung-wen
authors.initials: HW
authors.lastname: Liu
authors.forename: Pinghua
authors.initials: P
authors.lastname: Liu
mesh_terms: D000818:Animals; D053898:Biosynthetic Pathways; D045782:Hemiterpenes / Q000096:biosynthesis / Q000737:chemistry; D006801:Humans; D008798:Mevalonic Acid / Q000378:metabolism; D009943:Organophosphorus Compounds / Q000737:chemistry; D013729:Terpenes / Q000737:chemistry / Q000378:metabolism*
chemical_list: D045782:Hemiterpenes; D009943:Organophosphorus Compounds; D013729:Terpenes; C004809:isopentenyl pyrophosphate; C043060:3,3-dimethylallyl pyrophosphate; D008798:Mevalonic Acid
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