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Title: Host cells and methods for production of isobutanol

Abstract

Provided herein are recombinant yeast host cells and methods for their use for production of isobutanol. Yeast host cells provided comprise an isobutanol biosynthetic pathway and at least one of reduced or eliminated aldehyde dehydrogenase activity, reduced or eliminated acetolactate reductase activity; or a heterologous polynucleotide encoding a polypeptide having ketol-acid reductoisomerase activity.

Inventors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Butamax Advanced Biofuels LLC, Wilmington, DE (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1351895
Patent Number(s):
9,422,581
Application Number:
13/840,649
Assignee:
Butamax Advanced Biofuels LLC (Wilmington, DE) ARPA-E
DOE Contract Number:
AR0000006
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Mar 15
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; 09 BIOMASS FUELS

Citation Formats

Anthony, Larry Cameron, He, Hongxian, Huang, Lixuan Lisa, Okeefe, Daniel P., Kruckeberg, Arthur Leo, Li, Yougen, Maggio-Hall, Lori Ann, McElvain, Jessica, Nelson, Mark J., Patnaik, Ranjan, and Rothman, Steven Cary. Host cells and methods for production of isobutanol. United States: N. p., 2016. Web.
Anthony, Larry Cameron, He, Hongxian, Huang, Lixuan Lisa, Okeefe, Daniel P., Kruckeberg, Arthur Leo, Li, Yougen, Maggio-Hall, Lori Ann, McElvain, Jessica, Nelson, Mark J., Patnaik, Ranjan, & Rothman, Steven Cary. Host cells and methods for production of isobutanol. United States.
Anthony, Larry Cameron, He, Hongxian, Huang, Lixuan Lisa, Okeefe, Daniel P., Kruckeberg, Arthur Leo, Li, Yougen, Maggio-Hall, Lori Ann, McElvain, Jessica, Nelson, Mark J., Patnaik, Ranjan, and Rothman, Steven Cary. 2016. "Host cells and methods for production of isobutanol". United States. doi:. https://www.osti.gov/servlets/purl/1351895.
@article{osti_1351895,
title = {Host cells and methods for production of isobutanol},
author = {Anthony, Larry Cameron and He, Hongxian and Huang, Lixuan Lisa and Okeefe, Daniel P. and Kruckeberg, Arthur Leo and Li, Yougen and Maggio-Hall, Lori Ann and McElvain, Jessica and Nelson, Mark J. and Patnaik, Ranjan and Rothman, Steven Cary},
abstractNote = {Provided herein are recombinant yeast host cells and methods for their use for production of isobutanol. Yeast host cells provided comprise an isobutanol biosynthetic pathway and at least one of reduced or eliminated aldehyde dehydrogenase activity, reduced or eliminated acetolactate reductase activity; or a heterologous polynucleotide encoding a polypeptide having ketol-acid reductoisomerase activity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month = 8
}

Patent:

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  • Provided herein are recombinant yeast host cells and methods for their use for production of isobutanol. Yeast host cells provided comprise an isobutanol biosynthetic pathway and at least one of reduced or eliminated aldehyde dehydrogenase activity, reduced or eliminated acetolactate reductase activity; or a heterologous polynucleotide encoding a polypeptide having ketol-acid reductoisomerase activity.
  • Provided herein are recombinant yeast host cells and methods for their use for production of isobutanol. Yeast host cells provided comprise an isobutanol biosynthetic pathway and at least one of reduced or eliminated aldehyde dehydrogenase activity, reduced or eliminated acetolactate reductase activity; or a heterologous polynucleotide encoding a polypeptide having ketol-acid reductoisomerase activity.
  • The present invention provides methods for the production of proteins, particularly toxic proteins, in host cells. The invention provides methods which use a fusion protein comprising a chaperonin binding domain in host cells induced or regulated to have increased levels of chaperonin which binds the chaperonin binding domain.
  • The invention provides for a method for producing a 5-carbon alcohol in a genetically modified host cell. In one embodiment, the method comprises culturing a genetically modified host cell which expresses a first enzyme capable of catalyzing the dephosphorylation of an isopentenyl pyrophosphate (IPP) or dimethylallyl diphosphate (DMAPP), such as a Bacillus subtilis phosphatase (YhfR), under a suitable condition so that 5-carbon alcohol is 3-methyl-2-buten-1-ol and/or 3-methyl-3-buten-1-ol is produced. Optionally, the host cell may further comprise a second enzyme capable of reducing a 3-methyl-2-buten-1-ol to 3-methyl-butan-1-ol, such as a reductase.
  • The present disclosure provides artificial heavy metal binding proteins termed chelons by the inventors. These chelons bind cadmium and/or mercuric ions with relatively high affinity. Also disclosed are coding sequences, recombinant DNA molecules and recombinant host cells comprising those recombinant DNA molecules for expression of the chelon proteins. In the recombinant host cells or transgenic plants, the chelons can be used to bind heavy metals taken up from contaminated soil, groundwater or irrigation water and to concentrate and sequester those ions. Recombinant enteric bacteria can be used within the gastrointestinal tracts of animals or humans exposed to toxic metal ionsmore » such as mercury and/or cadmium, where the chelon recombinantly expressed in chosen in accordance with the ion to be rededicated. Alternatively, the chelons can be immobilized to solid supports to bind and concentrate heavy metals from a contaminated aqueous medium including biological fluids.« less