Patent ID: 8828693

Claim:
A method for producing isopropanol, comprising culturing recombinant yeast into which a heterologous acetoacetyl CoA synthase gene encoding an enzyme that catalyzes a reaction for conversion of acetyl CoA and malonyl CoA to acetoacetyl CoA and an isopropanol-biosynthesis-related gene group associated with a metabolic pathway for synthesis of isopropanol from acetoacetyl CoA are introduced, wherein the acetoacetyl CoA synthase gene is a gene (ORFn gene) obtained from a microorganism of the genus Streptomyces and the isopropanol-biosynthesis-related gene group comprises an isopropanol dehydrogenase gene (pdh gene) from a Clostridium - beijerinckii , thereby obtaining a recombinant yeast expressing the ORFn gene and the pdh gene, and then obtaining isopropanol from the culture product of the recombinant yeast.