摘要:
The present invention features improved methods for the enhanced production of pantoate and pantothenate utilizing microorganisms having modified pantothenate biosynthetic enzyme activities and having modified methylenetetrahydrofolate (MTF) biosynthetic enzyme activities. In particular, the invention features methods for enhancing production of desired products by increasing levels of a key intermediate, ketopantoate, by increasing enzymes or substrates that contribute directly or indirectly to its synthesis. Recombinant microorganisms and conditions for culturing same are also featured. Also featured are compositions produced by such microorganisms.
摘要:
The present invention features improved methods for the enhanced production of pantoate and pantothenate utilizing microorganisms having modified pantothenate biosynthetic enzyme activities and having modified methylenetetrahydrofolate (MTF) biosynthetic enzyme activities. In particular, the invention features methods for enhancing production of desired products by increasing levels of a key intermediate, ketopantoate, by increasing enzymes or substrates that contribute directly or indirectly to its synthesis. Recombinant microorganisms and conditions for culturing same are also are featured. Also featured are compositions produced by such microorganisms.
摘要:
The present invention features methods for the identification of compounds and compositions useful as antibiotics and antibacterial agents. In particular, the invention features methods for the identification of modulators of a previously unidentified target protein, termed CoaX. High-throughput assay systems are featured as well as assay kits for the identification of CoaX modulators. Also featured are coaX nucleic acid molecules and purified CoaX proteins, as well as recombinant vectors and microorganisms including the gene, coaX.
摘要:
The present invention features methods of producing panto-compounds (e.g., pantothenate) using microorganisms in which the pantothenate biosynthetic pathway and/or the isoleucine-valine biosynthetic pathway and/or the coenzymeA biosynthetic pathway has been manipulated. Methods featuring ketopantoate reductase overexpressing microorganisms as well as aspartate α-decarboxylase overexpressing microorganisms are provided. Methods of producing panto-compounds in a precursor-independent manner and in high yield are described. Recombinant microorganisms, vectors, isolated nucleic acid molecules, genes and gene products useful in practicing the above methodologies are also provided. The present invention also features a previously unidentified microbial pantothenate kinase gene, coaX, as well as methods of producing panto-compounds utilizing microorganisms having modified pantothenate kinase activity. Recombinant microorganisms, vectors, isolated coaX nucleic acid molecules and purified CoaX proteins are featured. Also featured are methods for identifying pantothenate kinase modulators utilizing the recombinant microorganisms and/or purified CoaX proteins of the present invention.
摘要:
The present invention relates to novel compounds which are derivatives of acidic phallotoxins and correspond to the formula: ##STR1## (NBD-acid phallotoxins) their preparation, and their use in fluorescent staining of F-actin.
摘要:
There is provided herein a system and method for generating downhole electricity from wells or similar apertures that penetrate sufficiently deep into the subsurface to allow liquid water to be converted to steam. In the preferred embodiment, a well that reaches to a point in the subsurface where the ambient temperature at depth is significantly above the boiling point of water (i.e., greater than 212° F.) will be used, said steam providing the force necessary to turn the blades of a turbine which, in turn, provides rotational force a downhole generator, thereby resulting in the generation of electricity.
摘要:
The present invention features improved methods for the enhanced production of pantoate and pantothenate utilizing microorganisms having modified pantothenate biosynthetic enzyme activities and having modified methylenetetrahydrofolate (MTF) biosynthetic enzyme activities. In particular, the invention features methods for enhancing production of desired products by increasing levels of a key intermediate, ketopantoate, by increasing enzymes or substrates that contribute directly or indirectly to its synthesis. Recombinant microorganisms and conditions for culturing same are also are featured. Also featured are compositions produced by such microorganisms.
摘要:
The present invention relates to novel compounds which are derivatives of acidic phallotoxins and correspond to the formula: ##STR1## (NBD-acid phallotoxins) their preparation, and their use in fluorescent staining of F-actin.
摘要:
A method is disclosed for the increased production of biotin and the biotin precursor dethiobiotin using a bacterium that produces a lysine-utilizing DAPA aminotransferase. The method involves the use of a bacterium that is either grown in the presence of lysine or deregulated for lysine biosynthesis.
摘要:
The present invention features methods of producing B6 vitamers that involve culturing an organism overexpressing an enzyme that catalyzes a step in the biosynthesis of a B6 vitamer under conditions such that a B6 vitamer is produced. The present invention further features methods of producing B6 vitamers that involve culturing recombinant microorganisms having increased activity of at least one B6 vitamer biosynthetic enzyme, e.g., YaaD or YaaE, or a homologue thereof, or Epd, PdxA, PdxJ, PdxF, PdxB, PdxH, and/or Dxs, or a homologue thereof.