2146 results about "Biosynthesis" patented technology

Plants, particularly cereal plants, which have improved ability to synthesise starch at elevated or lowered temperatures and / or to synthesise starch with an altered fine structure are produced by inserting into the genome of the plant (i) a gene(s) encoding a form of an enzyme of the starch or glycogen biosynthetic pathway, particularly soluble starch synthase and / or branching enzyme and / or glycogen synthase, which display an activity which continues to increase over a temperature range over which the activity would normally be expected to decrease, and / or (ii) a gene(s) encoding sense and anti-sense constructs of enzymes of the starch biosynthetic pathway, particularly soluble starch synthase and / or branching enzyme and / or glycogen synthase, which alters the natural ratios of expression of the said enzymes or inserts enzymes with special structural characteristics which alter the natural branching pattern in starch.

Thiazolo-, oxazolo- and selenazolo[4,5-c]quinolin-4-amines and analogs thereof are described including methods of manufacture and the use of novel intermediates. The compounds are immunomodulators and induce cytokine biosynthesis, including interferon and / or tumor biosynthesis, necrosis factor, and inhibit the T-helper-type 2 immune response. The compounds are further useful in the treatment of viral and neoplastic diseases.

The instant invention describes methods of separating or preferentially synthesizing dimers which are linked via at least one interchain disulfide linkage from dimers which are not linked via at least one interchain disulfide linkage from a mixture comprising the two types of polypeptide dimers. These forms can be separated from each other using hydrophobic interaction chromatography. In addition, the invention pertains to connecting peptides that result in the preferential biosynthesis of dimers that are linked via at least one interchain disulfide linkage or that are not linked via at least one interchain disulfide linkage. The invention also pertains to compositions in which a majority of the dimers are linked via at least one interchain disulfide linkage or are not linked via at least one interchain disulfide linkage. The invention still further pertains to novel binding molecules, e.g., comprising connecting peptides of the invention.

Methods for the fermentive production of four carbon alcohols are provided. Specifically, butanol, preferably 2-butanol is produced by the fermentive growth of a recombinant bacteria expressing a 2-butanol biosynthetic pathway. The recombinant microorganisms and methods of the invention can also be adapted to produce 2-butanone, an intermediate in the 2-butanol biosynthetic pathways disclosed herein.

A conjugate of formula A-L-P, in which:A represents a glycosylated / galactosylated peptide that binds to a cell-surface receptor,L represents a bifunctional linker, which does not comprise a naturally occurring amino acid and is covalently bonded to A and P in a regiospecific manner, andP represents a monomer, homopolymer or heteropolymer comprising at least one nucleotide or an analogue thereof, which inhibits the intracellular biosynthesis of nucleotides or nucleic acids in a sequence-independent manner,wherein either or both of the covalent bond between A and L and the covalent bond between L and P can be cleaved intracellularly; a composition comprising such a conjugate; and a method of inhibiting abnormal cellular proliferation in a mammal; and a method of inhibiting replication of a virus in a mammal.

The invention provides a non-naturally occurring microorganism comprising one or more gene disruptions, the one or more gene disruptions occurring in genes encoding an enzyme obligatory to coupling 1,4-butanediol production to growth of the microorganism when the gene disruption reduces an activity of the enzyme, whereby the one or more gene disruptions confers stable growth-coupled production of 1,4-butanediol onto the non-naturally occurring microorganism. The microorganism can further comprise a gene encoding an enzyme in a 1,4-butanediol (BDO) biosynthetic pathway. The invention additionally relates to methods of using microorganisms to produce BDO.

The present invention provides methods and compositions relating to generating plants having increased levels of oil and protein. This invention further provides recombinant expression cassettes, host cells, transgenic plants and genetically altered plants. The invention further provides isolated polynucleotides and their encoded proteins that are involved in phenylpropanoid biosynthesis.

A scaled-up multi-coaxial fiber bioreactor, and variations of this bioreactor. The device is characterized by a hollow housing and an array of from about 20 to about 400 modules of hollow fibers, where each module includes at least three coaxial semipermeable hollow fibers. The innermost fiber provides a boundary for an innermost compartment which is connected to inlet and outlet ports. Arranged coaxially around the central hollow fiber are several other hollow fibers with their respective compartments, each compartment defined by a respective annular space between adjacent fibers and each including inlet and outlet ports. An outermost compartment for permitting integral aeration is the space between the outer side of the outermost fibers and the inner side of the housing, and has inlet and outlet ports. The hollow housing has inlet and outlet manifolds and flow distributors for each of the compartments. In a preferred embodiment the bioreactor is used as an extracorporeal liver. Liver cells, are introduced into one or more annular compartments and media and aeration are provided in others. Plasma from an ailing patient is introduced into another compartment for biotransformation of blood-borne toxins and biosynthesis of proteins, lipids, and other metabolic products.

Cells are rendered sensitive to stimulation by introducing into a non-photoreceptor cell nucleic acid sequences encoding at least an opsin gene product, an arrestin gene product, and the alpha subunit of the heterotrimeric G protein of the Gq family. The introduced sequences are expressed by the cell to yield at least the opsin gene product, the arrestin gene product, and the alpha subunit of the heterotrimeric G protein of the Gq family. Retinal or a derivative thereof capable of bonding with the opsin gene product to form a rhodopsin is provided to the cell. The cell is then irradiated with light having a wavelength capable of converting the rhodopsin to metarhodopsin. The conversion of rhodopsin to metarhodopsin triggers a cascade of intracellular responses within the cell resulting in an increased intracellular concentration of IP3 and calcium ions.

The present invention relates to the construction and engineering of cells, more particularly microorganisms for producing PUFAs with four or more double bonds from non-fatty acid substrates through heterologous expression of an oxygen requiring pathway. The invention especially involves improvement of the PUFA content in the host organism through fermentation optimization, e.g. decreasing the temperature and / or designing an optimal medium, or through improving the flux towards fatty acids by metabolic engineering, e.g. through over-expression of fatty acid synthases, over-expression of other enzymes involved in biosynthesis of the precursors for PUFAs, or codon optimization of the heterologous genes, or expression of heterologous enzymes involved in the biosynthesis of the precursor for PUFAs.

This invention relates to a recombinant microorganism having improved butanol production capacity and butanol production with the use of such recombinant microorganism with good efficiency. In this invention, the acetoacetyl-CoA synthase gene encoding an enzyme capable of synthesizing acetoacetyl-CoA from malonyl-CoA and acetyl-CoA and a group of genes involved in butanol biosynthesis that enables synthesis of butanol from acetoacetyl-CoA are introduced into a host microorganism.

An object of the present invention is to provide a transformation system for Labyrinthulomycota that allows the elucidation of biosynthetic mechanisms of lipids such as PUFA and carotenoids as well as for the construction of a high production system and the design and development of novel functional lipid molecules by the control of the mechanisms. The present invention provides a method for introducing a transgene into a cell of Labyrinthulomycota, which comprises introducing into a cell of Labyrinthulomycota a recombinant vector comprising a transgene and a nucleotide sequence which is homologous to a part of chromosomal DNA of Labyrinthulomycota and is capable of homologous recombination with the chromosomal DNA, and then inducing homologous recombination in this homologous nucleotide sequence.

The present disclosure identifies methods and compositions for modifying photoautotrophic organisms as hosts, such that the organisms efficiently convert carbon dioxide and light into n-alkanes, and in particular the use of such organisms for the commercial production of n-alkanes and related molecules.

A non-naturally occurring eukaryotic or prokaryotic organism includes one or more gene disruptions occurring in genes encoding enzymes imparting increased fumarate, malate or acrylate production in the organism when the gene disruption reduces an activity of the enzyme. The one or more gene disruptions confers increased production of acrylate onto the organism. Organisms that produce acrylate have an acrylate pathway that at least one exogenous nucleic acid encoding an acrylate pathway enzyme expressed in a sufficient amount to produce acrylate, the acrylate pathway comprising a decarboxylase. Methods of producing fumarate, malate or acrylate include culturing these organisms.

The invention discloses a halomonas strain and application thereof. The halomonas strain is a halomonas sp. TD01 with a preservation number of CGMCC NO.4353. Experiments indicate that the halomonas sp. TD01 can effectively accumulate polyhydroxyalkanoates (PHA) in a mineral medium (MM) and provides a better guarantee for the biosynthesis of the PHA and PHBV (poly(hydroxybutyrate-hydroxyvalerate)). The halomonas strain has the advantages of simple nutrient requirement, no need of sterilization in a fermenting process, capability of continuous implantation and simpleness and easiness in control. Methods for preparing the PHA by using the halomonas sp. TD01 all lower the production cost from varying degrees and increase the yield of the PHA; and the obtained PHA has the molecular weight of above 500kDa and has an industrial application value.

Aspects of the invention relate to methods for the production of difunctional alkanes in host cells. In particular, aspects of the invention describe components of genes associated with the difunctional alkane production from carbohydrate feedstocks in host cells. More specifically, aspects of the invention describe metabolic pathways for the production of adipic acid, aminocaproic acid, caprolactam, and hexamethylenediamine via 2-ketopimelic acid.

This invention provides novel methods of obtaining autologous monoclonal antibodies (AMABs) to self-antigens or homologs thereof. The method involves obtaining a genetically engineered host animal that does not biosynthesize at least one epitope of the antigen and utilizes the lack of self-tolerance of the host to the epitope to produce antibodies specific to the antigen. The invention also encompasses the AMABs produced by the methods. The invention further encompasses methods of isolating cells comprising the use of such AMABs that have specificity for a cell surface antigen.

The instant invention describes methods of separating or preferentially synthesizing dimers which are linked via at least one interchain disulfide linkage from dimers which are not linked via at least one interchain disulfide linkage from a mixture comprising the two types of polypeptide dimers. These forms can be separated from each other using hydrophobic interaction chromatography. In addition, the invention pertains to connecting peptides that result in the preferential biosynthesis of dimers that are linked via at least one interchain disulfide linkage or that are not linked via at least one interchain disulfide linkage. The invention also pertains to compositions in which a majority of the dimers are linked via at least one interchain disulfide linkage or are not linked via at least one interchain disulfide linkage. The invention still further pertains to novel binding molecules, e.g., comprising connecting peptides of the invention.

The invention provides a non-naturally occurring set of microbial organisms. The set of organisms includes: at least a first constituent complementary metabolizing organism (CMO) exhibiting the ability to metabolize a first carbon substrate and having substantially impaired metabolic capacity for a second carbon substrate, and at least a second constituent complementary metabolizing organism (CMO) exhibiting the ability to metabolize the second carbon substrate and having substantially impaired metabolic capacity for the first carbon substrate, wherein a co-culture of the at least first and second CMOs exhibit simultaneous metabolism of a mixture having the first and second carbon substrates compared to either CMO alone. Simultaneous metabolism of a mixture having first and second carbon substrates can include an enhanced rate of metabolism of the first and second substrates compared to either CMO alone. Also provided is a bioprocess for producing a chemical compound. The bioprocess includes co-culturing a non-naturally occurring set of microbial organisms in a mixture having at least a first and a second carbon substrate under conditions sufficient for biosynthesis of a target chemical compound, the set of non-naturally occurring microbial organisms including: at least a first constituent complementary metabolizing organism (CMO) exhibiting the ability to metabolize the first carbon substrate and having substantially impaired metabolic capacity for the second carbon substrate, and at least a second constituent complementary metabolizing organism (CMO) exhibiting the ability to metabolize the second carbon substrate and having substantially impaired metabolic capacity for the first carbon substrate, wherein a co-culture of the at least first and second CMOs exhibit simultaneous metabolism of a mixture having the first and second carbon substrates compared to either CMO alone. Simultaneous metabolism of a mixture having first and second carbon substrates can include an enhanced rate of metabolism of the first and second substrates compared to either CMO alone.

The present disclosure identifies methods and compositions for modifying photoautotrophic organisms, such that the organisms efficiently convert carbon dioxide and light into compounds such as esters and fatty acids. In certain embodiments, the compounds produced are secreted into the medium used to culture the organisms.