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Abstract

The present disclosure relates generally to methods, isolated polypeptides and polynucleotides, expression vectors, and host cells for the production of cannabidiolic acid (CBDa), cannabigerolic acid (CBCa), and other phytocannabinoids. A method of producing CBDa, CBCa, and/or other phytocannabinoids in a heterologous host cell having CBDa-producing, CBCa-producing or phytocannabinoid-producing capacity comprises transforming the host cell with a nucleotide encoding a variant CBDa synthase protein having a serine insertion between residues P224 and K225 and one or more other amino acid mutation relative to wild type CBDa synthase, and culturing the transformed host cell to produce CBDa, CBCa, and/or other phytocannabinoids therefrom. The variant CBDa synthase protein has at least 85% sequence identity with the wild type CBDa synthase protein sequence OXC52 according to SEQ ID NO:140, with serine insertion (SEQ ID NO:141). Exemplary variants having good phytocannabinoid production capacity are described.

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First Claim