The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 10, 2013
Filed:
Feb. 19, 2009
Gunter Festel, Fürigen, CH;
Eckhard Boles, Darmstadt, DE;
Christian Weber, Kelkheim am Taunus, DE;
Dawid Brat, Frankfurt am Main, DE;
Gunter Festel, Fürigen, CH;
Eckhard Boles, Darmstadt, DE;
Christian Weber, Kelkheim am Taunus, DE;
Dawid Brat, Frankfurt am Main, DE;
Butalco GmbH, Hunenberg/Zug, CH;
Abstract
The invention relates to a yeast cell producing isobutanol, characterized in that the cell has an increased metabolic flow of material from pyruvate and acetolactate, 2,3-dihydroxy isovalerate, 2-ketoisovalerate, isobutyraldehyde to isobutanol, in that at least one of the genes coding the enzymes, which are involved in this conversion, is over-expressed, and without any of said genes being heterologous to said yeast cell, and to a method for the production of isobutanol using yeast cells, comprising the provision of the yeast cells according to the invention, and bringing the yeast cell into contact with a fermentable carbon source.