3n0g

Crystal Structure of Isoprene Synthase from Grey Poplar Leaves (Populus x canescens) in complex with three Mg2+ ions and dimethylallyl-S-thiolodiphosphate

spinqualitylabelsall models 3n0g, resolution 2.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3n0g is a 2 chain structure with sequence from Populus tremula x Populus alba. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.8Å Ligands: DST, MG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function ISPS_POPCN Lyase that catalyzes the formation of isoprene from dimethylallyl diphosphate via a syn-periplanar elimination mechanism in which the diphosphate-leaving group serves as a general base. 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 The X-ray crystal structure of recombinant PcISPS (isoprene synthase from gray poplar hybrid Populusxcanescens) has been determined at 2.7 A resolution, and the structure of its complex with three Mg(2+) and the unreactive substrate analogue dimethylallyl-S-thiolodiphosphate has been determined at 2.8 A resolution. Analysis of these structures suggests that the generation of isoprene from substrate dimethylallyl diphosphate occurs via a syn-periplanar elimination mechanism in which the diphosphate-leaving group serves as a general base. This chemical mechanism is responsible for the annual atmospheric emission of 100 Tg of isoprene by terrestrial plant life. Importantly, the PcISPS structure promises to guide future protein engineering studies, potentially leading to hydrocarbon fuels and products that do not rely on traditional petrochemical sources. Structure of Isoprene Synthase Illuminates the Chemical Mechanism of Teragram Atmospheric Carbon Emission.,Koksal M, Zimmer I, Schnitzler JP, Christianson DW J Mol Biol. 2010 Jul 17. PMID:20624401 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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