Inhibition of a multiproduct terpene synthase from Medicago truncatula by 3-bromoprenyl diphosphates. Issue 16 (25th March 2015)

• Record Type: Journal Article
• Authors: Vattekkatte, Abith; Gatto, Nathalie; Schulze, Eva; Brandt, Wolfgang; Boland, Wilhelm
• Is Part Of: Organic & biomolecular chemistry. Volume 13:Issue 16(2015)
• Page Start: 4776
• Page End: 4784
• Publication Date: 2015-03-25
• Subjects: Chemistry, Organic -- Periodicals; Bioorganic chemistry -- Periodicals; Chemistry, Physical organic -- Periodicals; 547
• DOI: 10.1039/c5ob00506j
• Languages: English
• ISSNs: 1477-0520

Abstract

Abstract : 3-Bromo prenyl analogues bind to the active site and act as competitive inhibitors for terpene cyclases and -synthases. Abstract : The multiproduct sesquiterpene synthase MtTPS5 from Medicago truncatula catalyzes the conversion of farnesyl diphosphate (FDP) into a complex mixture of 27 terpenoids. 3-Bromo substrate analogues of geranyl diphosphate (3-BrGDP) and farnesyl diphosphate (3-BrFDP) were evaluated as substrates of MTPS5 enzyme. Kinetic studies demonstrated that these compounds were highly potent competitive inhibitors of the MtTPS5 enzyme with fast binding and slow reversibility. Since there is a lack of knowledge about the crystal structure of multiproduct terpene synthases, these molecules might be ideal candidates for obtaining a co-crystal structure with multiproduct terpene synthases. Due to the structural and mechanistic similarity between various terpene synthases we expect these 3-bromo isoprenoids to be ideal probes for crystal structure studies.