Recombinant microorganisms and uses therefor

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United States of America Patent

PATENT NO 9890384
SERIAL NO

13914234

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Abstract

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Carboxydotrophic acetogenic microorganisms do not produce MEK and/or 2-butanol. They lack the biosynthesis pathways to make these products. In addition, they produce the intermediate (R,R)-2,3-butanediol whereas the production of MEK and 2-butanol requires production of the intermediate (R,S)-2,3-butanediol. Nonetheless, the production of MEK and/or 2-butanol can be accomplished using recombinant microorganisms adapted to express or overexpress key enzymes in the MEK and/or 2-butanol biosynthesis pathways. Such microorganisms, such as the carboxydotrophic acetogen Clostridium autoethanogenum, can ferment substrates comprising CO. The overall scheme involves the production of 2-butanol from (R,S)-2,3-butanediol and the conversion of (R)-acetoin to (S)-2,3-butanediol. These steps are involved in the production of both MEK and 2-butanol. Such fermentation methods offer a means of using carbon monoxide from industrial processes which would otherwise be released into the atmosphere and pollute the environment.

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Patent Owner(s)

Patent OwnerAddress
LANZATECH NEW ZEALAND LIMITEDPARNELL AUCKLAND 1052

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Koepke, Michael Auckland, NZ 79 227
Mueller, Alexander Paul Auckland, NZ 13 39
Nagaraju, Shilpa Auckland, NZ 9 27

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