Product Rearrangement from Altering a Single Residue in the Rice syn-Copalyl Diphosphate Synthase
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Through site-directed mutagenesis targeted at identification of the catalytic base in the rice (Oryza sativa) syn-copalyl diphosphate synthase OsCPS4, changes to a single residue (H501) were found to induce rearrangement rather than immediate deprotonation of the initially formed bicycle, leading to production of the novel compound syn-halimadienyl diphosphate. These mutational results are combined with quantum chemical calculations to provide insight into the underlying reaction mechanism.
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This article is published as Product Rearrangement from Altering a Single Residue in the Rice syn-Copalyl Diphosphate Synthase, Kevin C. Potter, Meirong Jia, Young J. Hong, Dean Tantillo, and Reuben J. Peters, Organic Letters 2016 18 (5), 1060-1063, DOI: 10.1021/acs.orglett.6b00181. Posted with permission.