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Title: DHAD variants and methods of screening

Patent ·
OSTI ID:1345383

Methods of screening for dihydroxy-acid dehydratase (DHAD) variants that display increased DHAD activity are disclosed, along with DHAD variants identified by these methods. Such enzymes can result in increased production of compounds from DHAD requiring biosynthetic pathways. Also disclosed are isolated nucleic acids encoding the DHAD variants, recombinant host cells comprising the isolated nucleic acid molecules, and methods of producing butanol.

Research Organization:
Butamax Advanced Biofuels LLC Wilmington, DE (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AR0000006
Assignee:
Butamax Advanced Biofuels LLC
Patent Number(s):
9,580,705
Application Number:
14/207,823
OSTI ID:
1345383
Resource Relation:
Patent File Date: 2014 Mar 13
Country of Publication:
United States
Language:
English

References (109)

Process for amplifying nucleic acid sequences patent July 1987
Nucleic acid coding for an .alpha.-acetolactate synthase from lactococcus and its applications patent July 1997
Method for the fermentative production of D-pantothenic acid using Coryneform bacteria patent January 2001
Nucleic acid and amino acid sequences relating to Streptococcus pneumoniae for diagnostics and therapeutics patent March 2004
Solvent tolerant microorganisms and methods of isolation patent June 2009
Solvent tolerant microorganisms and methods of isolation patent February 2010
Fermentive production of four carbon alcohols patent December 2010
Fermentive production of isobutanol using highly active ketol-acid reductoisomerase enzymes patent March 2011
Treatment of biomass to obtain fermentable sugars patent April 2011
Fermentive production of four carbon alcohols patent August 2011
Solvent tolerant microorganisms patent September 2011
Methods of increasing dihydroxy acid dehydratase activity to improve production of fuels, chemicals, and amino acids patent September 2011
Methods of increasing dihydroxy acid dehydratase activity to improve production of fuels, chemicals, and amino acids patent December 2011
Ketol-acid reductoisomerase using NADH patent March 2012
Fermentive production of four carbon alcohols patent May 2012
Butanol dehydrogenase enzyme from the bacterium Achromobacter xylosoxidans patent May 2012
Production of 2-butanol and 2-butanone employing aminobutanol phosphate phospholyase patent June 2012
Ketol-acid reductoisomerase using NADH patent July 2012
Cytosolic isobutanol pathway localization for the production of isobutanol patent July 2012
Recombinant yeast host cell with Fe-S cluster proteins and methods of using thereof patent August 2012
Fermentive production of four carbon alcohols patent September 2012
Methods of increasing dihydroxy acid dehydratase activity to improve production of fuels, chemicals, and amino acids patent September 2012
Fermentive production of four carbon alcohols patent October 2012
Production of four carbon alcohols using improved strain patent February 2013
Yeast strain for production of four carbon alcohols patent March 2013
Enhanced pyruvate to 2,3-butanediol conversion in lactic acid bacteria patent June 2013
Yeast with increased butanol tolerance involving high osmolarity/glycerol response pathway patent June 2013
Increased production of isobutanol in yeast with reduced mitochondrial amino acid biosynthesis patent June 2013
Strain comprising increased expression of a CFA coding region for butanol production patent August 2013
Yeast with increased butanol tolerance involving filamentous growth response patent October 2013
Yeast with increased butanol tolerance involving a multidrug efflux pump gene patent December 2013
Method for producing butanol using extractive fermentation with electrolyte addition patent December 2013
Enhanced dihydroxy-acid dehydratase activity in lactic acid bacteria patent January 2014
Expression of hexose kinase in recombinant host cells patent January 2014
Strain for butanol production with increased membrane unsaturated trans fatty acids patent February 2014
Enhanced pyruvate to acetolactate conversion in yeast patent March 2014
Butanol dehydrogenase enzyme from the bacterium Achromobacter xylosoxidans patent April 2014
Fermentive production of four carbon alcohols patent May 2014
Alcohol dehydrogenases (ADH) useful for fermentive production of lower alkyl alcohols patent July 2014
Increased production of isobutanol in yeast with reduced mitochondrial amino acid biosynthesis patent July 2014
Yeast with increased butanol tolerance involving cell wall integrity pathway patent August 2014
Production of isobutanol in yeast mitochondria patent September 2014
Method for producing butanol using two-phase extractive fermentation patent September 2014
Fermentive production of four carbon alcohols patent September 2014
Recombinant host cells comprising phosphoketolases patent October 2014
Fermentive production of four carbon alcohols patent November 2014
Engineering resistance to aliphatic alcohols patent December 2014
Ketol-acid reductoisomerase using NADH patent December 2014
Yeast strain for production of four carbon alcohols patent January 2015
Production of isobutanol by a microorganism with enhanced acetolactate synthase activity patent February 2015
Ketol-acid reductoisomerase using NADH patent February 2015
Fermentive production of four carbon alcohols patent February 2015
Identification and use of bacterial [2Fe-2S] dihydroxy-acid dehydratases patent February 2015
Enhanced pyruvate to acetolactate conversion in yeast patent February 2015
Recombinant host cell comprising a diol dehydratase patent February 2015
Method for producing butanol using extractive fermentation with electrolyte addition patent March 2015
Enhanced pyruvate to acetolactate conversion in yeast patent March 2015
Fermentive production of four carbon alcohols patent March 2015
Treatment of biomass to obtain fermentable sugars patent-application February 2007
Fermentive Production Of Four Carbon Alcohols patent-application July 2008
Identification and use of Bacterial [2FE-2S] Dihydroxy-acid Dehydratases patent-application April 2010
Enhanced Iron-sulfur Cluster Formation for Increased Dihydroxy-Acid Dehydratase Activity in Lactic Acid Bacteria patent-application April 2010
Carbon Pathway Optimized Production Hosts for the Production of Isobutanol patent-application May 2010
Organic Acid Production by Fungal Cells patent-application February 2011
Cytosolic Isobutanol Pathway Localization for the Production of Isobutanol patent-application March 2011
Bacterial Strains for Butanol Production patent-application August 2011
Fermentive Production of Isobutanol Using Highly Effective Ketol-acid Reductoisomerase Enzymes patent-application October 2011
Engineering Resistance to Aliphatic Alcohols patent-application March 2012
Fermentive Production of Four Carbon Alcohols patent-application August 2012
Lignocellulosic Hydrolysates as Feedstocks for Isobutanol Fermentation patent-application February 2013
Acetate Supplementation of Medium for Butanologens patent-application September 2013
Host Cells and Methods for Production of Isobutanol patent-application January 2014
Host Cells and Methods for Production of Isobutanol patent-application January 2014
Activity of FE-S Cluster Requiring Proteins patent-application February 2014
Dhad Variants for Butanol Production patent-application July 2014
Analysis of a 108-kb Region of the Saccharopolyspora spinosa Genome Covering the Obscurin Polyketide Synthase Locus journal April 2004
An Investigation of the Metabolism of Valine to Isobutyl Alcohol in Saccharomyces cerevisiae journal October 1998
New insights and novel developments in clostridial acetone/butanol/isopropanol fermentation journal June 1998
Involvement of branched-chain amino acid aminotransferases in the production of fusel alcohols during fermentation in yeast journal April 2001
Studies on the Active Site of Dihydroxy-acid Dehydratase journal December 1993
pAM401-Based Shuttle Vectors That Enable Overexpression of Promoterless Genes and One-Step Purification of Tag Fusion Proteins Directly from Enterococcus faecalis journal March 2001
Branched-chain amino acid biosynthesis genes in Lactococcus lactis subsp. lactis. journal October 1992
Technologies for butanol recovery integrated with fermentations journal March 1992
Engineering hybrid genes without the use of restriction enzymes: gene splicing by overlap extension journal April 1989
Catalytic Promiscuity in Dihydroxy-Acid Dehydratase from the Thermoacidophilic Archaeon Sulfolobus solfataricus journal March 2006
New thermosensitive plasmid for gram-positive bacteria. journal September 1992
High- and low-copy-number Lactococcus shuttle cloning vectors with features for clone screening journal December 1993
Cloning of theILV2, ILV3 andILV5 genes of Saccharomyces cerevisiae journal January 1984
Plasmid vectors for Gram-positive bacteria switching from high to low copy number journal January 1996
A synthetic promoter library for constitutive gene expression in Lactobacillus plantarum journal April 2006
Electron spin relaxation of iron-sulphur proteins studied by microwave power saturation journal December 1978
Sequences of versatile broad-host-range vectors of the RK2 family journal July 2003
Melamine Deaminase and Atrazine Chlorohydrolase: 98 Percent Identical but Functionally Different journal April 2001
Plasmid p256 from Lactobacillus plantarum represents a new type of replicon in lactic acid bacteria, and contains a toxin-antitoxin-like plasmid maintenance system journal February 2005
Analysis of the Conjugal Transfer System of the Pheromone- Independent Highly Transferable Enterococcus Plasmid pMG1: Identification of a tra Gene (traA) Up-Regulated during Conjugation journal October 2002
CLUSTAL W: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choice journal January 1994
Functional Analysis of Three Plasmids from Lactobacillus plantarum journal March 2005
Identification and Characterization of l-Arabonate Dehydratase, l-2-Keto-3-deoxyarabonate Dehydratase, and l-Arabinolactonase Involved in an Alternative Pathway of l-Arabinose Metabolism: Novel Evolutionary Insight into Sugar Metabolism journal September 2006
Heterologous protein production in yeast book January 1992
Industrial production of heterologous proteins by fed-batch cultures of the yeast Saccharomyces cereuisiae journal December 1994
Semi-rational approaches to engineering enzyme activity: combining the benefits of directed evolution and rational design journal August 2005
Cloning of the dihydroxyacid dehydratase-encoding gene (ILV3) from Saccharomyces cerevisiae journal December 1993
Disentangling the perturbational effects of amino acid substitutions in the DNA-binding domain of p53 journal February 1999
Iron Acquisition and Transcriptional Regulation journal October 2009
Iron−Sulfur Cluster Biosynthesis: Functional Characterization of the N- and C-Terminal Domains of Human NFU journal February 2009
Codon usage tabulated from international DNA sequence databases: status for the year 2000 journal January 2000
Glutaredoxins Grx3 and Grx4 regulate nuclear localisation of Aft1 and the oxidative stress response in Saccharomyces cerevisiae journal November 2006
New integration vector using a cellulase gene as a screening marker for Lactobacillus journal July 2003
Transformation of Lactobacillus plantarum by electroporation with in vitro modified plasmid DNA journal December 2004

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