摘要:
Bacterial strains transformed with the pcu genes are useful for the production of para-hydroxybenzoate (PHBA). Applicant has provided the p-cresol utilizing (pcu) and tmoX gene sequences from Pseudomonas mendocina KR-1, the proteins encoded by these sequences, recombinant plasmids containing such sequences, and bacterial host cells containing such plasmids or integrated sequences. Method for the use of these materials to produce PHBA are also disclosed.
摘要:
Sequences of B12-dependent dehydratases with improved reaction kinetics are presented. Use of these B12-dependent dehydratases reduce the rate of the enzyme's suicide inactivation in the presence of glycerol and 1,3-propanediol. The enzymes were created using error-prone PCR and oligonucleotide-directed mutagenesis to target the DhaB1 gene, which encodes the α-subunit of glycerol dehydratase. Mutants with improved reaction kinetics were rapidly identified using high throughput assays.
摘要:
Sequences of B12-dependent dehydratases with improved reaction kinetics are presented. Use of these B12-dependent dehydratases reduce the rate of the enzyme's suicide inactivation in the presence of glycerol and 1,3-propanediol. The enzymes were created using error-prone PCR and oligonucleotide-directed mutagenesis to target the DhaB1 gene, which encodes the α-subunit of glycerol dehydratase. Mutants with improved reaction kinetics were rapidly identified using high throughput assays.
摘要:
Sequences of B12-dependent dehydratases with improved reaction kinetics are presented. Use of these B12-dependent dehydratases reduce the rate of the enzyme's suicide inactivation in the presence of glycerol and 1,3-propanediol. The enzymes were created using error-prone PCR and oligonucleotide-directed mutagenesis to target the DhaB1 gene, which encodes the α-subunit of glycerol dehydratase. Mutants with improved reaction kinetics were rapidly identified using high throughput assays.
摘要:
The invention relates generally to the field of industrial microbiology and butanol production. More specifically, the invention relates methods of reducing 2,3-dihydroxy-2-methyl butyrate (DHMB) in butanol production. DHMB can be reduced by inhibiting the reduction of acetolactate to DHMB, for example, by knocking out enzymes that catalyze the reduction or by removing DHMB during or after fermentation. Yeast strains, compositions, and methods for reducing DHMB and increasing butanol yield are provided.
摘要:
Sequences of B12-dependent dehydratases with improved reaction kinetics are presented. Use of these B12-dependent dehydratases reduce the rate of the enzyme's suicide inactivation in the presence of glycerol and 1,3-propanediol. The enzymes were created using error-prone PCR and oligonucleotide-directed mutagenesis to target the DhaB1 gene, which encodes the α-subunit of glycerol dehydratase. Mutants with improved reaction kinetics were rapidly identified using high throughput assays.
摘要:
Sequences of B12-dependent dehydratases with improved reaction kinetics are presented. Use of these B12-dependent dehydratases reduce the rate of the enzyme's suicide inactivation in the presence of glycerol and 1,3-propanediol. The enzymes were created using error-prone PCR and oligonucleotide-directed mutagenesis to target the DhaB1 gene, which encodes the α-subunit of glycerol dehydratase. Mutants with improved reaction kinetics were rapidly identified using high throughput assays.
摘要:
Sequences of B12-dependent dehydratases with improved reaction kinetics are presented. Use of these B12-dependent dehydratases reduce the rate of the enzyme's suicide inactivation in the presence of glycerol and 1,3-propanediol. The enzymes were created using error-prone PCR and oligonucleotide-directed mutagenesis to target the DhaB1 gene, which encodes the α-subunit of glycerol dehydratase. Mutants with improved reaction kinetics were rapidly identified using high throughput assays.
摘要:
Bacterial strains transformed with the pcu genes are useful for the production of para-hydroxybenzoate (PHBA). Applicant has provided the p-cresol utilizing (pcu) and tmoX gene sequences from Pseudomonas mendocina KR-1, the proteins encoded by these sequences, recombinant plasmids containing such sequences, and bacterial host cells containing such plasmids or integrated sequences. Method for the use of these materials to produce PHBA are also disclosed.
摘要:
Bacterial strains transformed with the pcu genes are useful for the production of para-hydroxybenzoate (PHBA). Applicant has provided the p-cresol utilizing (pcu) and tmoX gene sequences from Pseudomonas mendocina KR-1, the proteins encoded by these sequences, recombinant plasmids containing such sequences, and bacterial host cells containing such plasmids or integrated sequences. Method for the use of these materials to produce PHBA are also disclosed.