5gul

Publication Abstract from PubMed

We report the three-dimensional structure of cyclolavandulyl diphosphate (CLPP) synthase (CLDS), which consecutively catalyzes the condensation of two molecules of dimethylallyl diphosphate (DMAPP) followed by cyclization to form a cyclic monoterpene, CLPP. The structures of apo-CLDS and CLDS in complex with Tris, pyrophosphate, and Mg(2+) ion were refined at 2.00 A resolution and 1.73 A resolution, respectively. CLDS adopts a typical fold for cis-prenyl synthases and forms a homo-dimeric structure. An in vitro reaction using a regiospecifically (2) H-substituted DMAPP substrate revealed the intramolecular proton transfer mechanism of the CLDS reaction. The CLDS structure and structure-based mutagenesis provide mechanistic insights into this unprecedented terpene synthase. The combination of structural and mechanistic insights advances the knowledge of intricate terpene synthase-catalyzed reactions.

Structure and Mechanism of the Monoterpene Cyclolavandulyl Diphosphate Synthase that Catalyzes Consecutive Condensation and Cyclization.,Tomita T, Kobayashi M, Karita Y, Yasuno Y, Shinada T, Nishiyama M, Kuzuyama T Angew Chem Int Ed Engl. 2017 Nov 20;56(47):14913-14917. doi:, 10.1002/anie.201708474. Epub 2017 Oct 11. PMID:28922556^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.