2q9y

Trichodiene synthase: Complex with Mg, inorganic pyrophosphate, and benzyl triethyl ammonium cation

spinqualitylabelsall models 2q9y, resolution 2.85Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2q9y is a 2 chain structure with sequence from Fusarium sporotrichioides. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.85Å Ligands: BTM, EDO, MG, POP Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function TRI5_FUSSP TS is a member of the terpene cyclase group of enzymes. It catalyzes the isomerization and cyclization of farnesyl pyro-phosphate to form trichodiene, the first cyclic intermediate in the biosynthetic pathway for trichothecenes. It serves to branch trichothecene biosynthesis from the isoprenoid pathway. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Trichodiene synthase is a terpenoid cyclase that catalyzes the cyclization of farnesyl diphosphate (FPP) to form the bicyclic sesquiterpene hydrocarbon trichodiene (89%), at least five sesquiterpene side products (11%), and inorganic pyrophosphate (PP(i)). Incubation of trichodiene synthase with 2-fluorofarnesyl diphosphate or 4-methylfarnesyl diphosphate similarly yields sesquiterpene mixtures despite the electronic effects or steric bulk introduced by substrate derivatization. The versatility of the enzyme is also demonstrated in the 2.85A resolution X-ray crystal structure of the complex with Mg(2+) (3)-PP(i) and the benzyl triethylammonium cation, which is a bulkier mimic of the bisabolyl carbocation intermediate in catalysis. Taken together, these findings show that the active site of trichodiene synthase is sufficiently flexible to accommodate bulkier and electronically-diverse substrates and intermediates, which could indicate additional potential for the biosynthetic utility of this terpenoid cyclase. Exploring biosynthetic diversity with trichodiene synthase.,Vedula LS, Zhao Y, Coates RM, Koyama T, Cane DE, Christianson DW Arch Biochem Biophys. 2007 Oct 15;466(2):260-6. Epub 2007 Jun 28. PMID:17678871 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Trichodiene synthase

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