摘要:
The invention provides non-natural microbial organisms containing enzymatic pathways and/or metabolic modifications for enhancing carbon flux through acetyl-CoA, or oxaloacetate and acetyl-CoA. Embodiments of the invention include microbial organisms having a pathway to acetyl-CoA and oxaloacetate that includes phosphoketolase (a PK pathway). The organisms also have either (i) a genetic modification that enhances the activity of the non-phosphotransferase system (non-PTS) for sugar uptake, and/or (ii) a genetic modification(s) to the organism's electron transport chain (ETC) that enhances efficiency of ATP production, that enhances availability of reducing equivalents or both. The microbial organisms can optionally include (iii) a genetic modification that maintains, attenuates, or eliminates the activity of a phosphotransferase system (PTS) for sugar uptake. The enhanced carbon flux through acetyl-CoA and oxaloacetate can be used for production of a bioderived compound, and the microbial organisms can further include a pathway capable of producing the bioderived compound.
摘要:
The present disclosure relates, in some aspects, to cell-free methods and systems for large-scale conversion of methane to isobutanol, comprising combining, in a bioreactor at elevated pressure, methane, oxygen, and cell lysates containing methane monooxygenase, methanol dehydrogenase, and enzymes that catalyze the conversion of formaldehyde to isobutanol, to form a cell-free reaction mixture, and incubating under suitable conditions the cell-free reaction to convert methane to isobutanol.
摘要:
Described herein are inventions in the field of genetic engineering of plants, including combinations of nucleic acid molecules encoding pyruvate kinase subunits to improve agronomic, horticultural, and quality traits. This invention relates generally to the combination of nucleic acid sequences encoding pyruvate kinase proteins that are related to the presence of seed storage compounds in plants. More specifically, the present invention relates to the use of these combinations of these sequences, their order and direction in the combination, and the regulatory elements used to control expression and transcript termination in these combinations in transgenic plants. In particular, the invention is directed to methods for manipulating seed storage compounds in plants and seeds. The invention further relates to methods of using these novel combinations of polypeptides to stimulate plant growth and/or root growth and/or to increase yield and/or composition of seed storage compounds.
摘要:
The present invention relates to a method for identifying and/or characterizing a (poly)peptide comprising: (a) analyzing a peptide map of said (poly)peptide, comprising at least 1 peptide, and its peptide primary structure fingerprint by mass spectrometry; and (b) comparing data obtained in step (a) with a reference (poly)peptide database, said database comprising mass spectrometric data of peptide maps, comprising at least 1 peptide, and of its peptide primary structure fingerprint, of a (poly)peptide or of a variety of (poly)peptides.
摘要:
Provided is a method for producing circular DNA in which a region that is sandwiched by a region Ha and a region Hb in circular double-stranded DNA is substituted with the entirety or a portion of a linear-DNA fragment, wherein the region Hb is located downstream of the region Ha in the circular double-stranded DNA; the linear-DNA fragment is single-stranded or double-stranded linear DNA that has a homologous region that corresponds to the region Ha and a homologous region that corresponds to the region Hb, the latter homologous region being positioned downstream of the former homologous region; and the method comprising: preparing a reaction solution that contains the circular double-stranded DNA, the linear-DNA fragment, and a protein that has RecA-family-recombinase activity, and performing homologous recombination reaction by incubating the reaction solution for a predetermined period of time, thereby producing circular DNA in which the region that is from the region Ha to the region Hb in the circular double-stranded DNA is substituted with the region that is from the homologous region that corresponds to the region Ha to the homologous region that corresponds to the region Hb in the linear-DNA fragment.
摘要:
The present disclosure relates to genetically modified strains of Salmonella, engineered to be tumor navigating and to alter tumor metabolism in the tumor microenvironment. Also provided herein are methods of producing and methods of using such genetically modified Salmonella strains to treat cancer.
摘要:
Nucleic acid agents for reducing or removing infestations of the Varroa destructor mite are described. Compositions comprising the nucleic acid agents and methods for controlling mite infestations using the nucleic acid agents and compositions are also disclosed.
摘要:
Provided are methods for isolating potent extracellular vesicle or exosome populations from mesenchymal stromal cells, and the use of the isolated extracellular vesicles or exosomes in treating vasculopathy, including pulmonary hypertension, bronchopulmonary dysplasia, and disease and conditions associated with mitochondrial dysfunction.
摘要:
The invention relates to a nucleid acid coding for at least one partial sequence of a protein kinase of the mitogenic signalling cascade, whereby the partial sequence codes for a binding site for a glycolysis-catalysing enzyme. The invention further relates to a silent mutation of one such nucleic acid or a nucleic acid hybridising with one such nucleic acid or the silent mutation thereof.