The present invention generally relates to the microbiological industry, and specifically to the production of L-serine using genetically modified bacteria. The present invention provides genetically modified microorganisms, such as bacteria, wherein the expression of genes encoding for enzymes involved in the degradation of L-serine is attenuated, such as by inactivation, which makes them particularly suitable for the production of L-serine at higher yield. The present invention also provides means by which the microorganism, and more particularly a bacterium, can be made tolerant towards higher concentrations of serine. The present invention also provides methods for the production of L-serine or L-serine derivative using such genetically modified microorganisms.

Compositions for a phage particle are disclosed. The phage particle is non-replicating and includes at least one heterologous nucleic acid sequence that is capable of being expressed in a target bacteria. The expressed heterologous nucleic acid sequence is non-lethal to the target bacteria.

The present invention relates to a cell for producing acyl glycinates wherein the cell is genetically modified to comprise at least a first genetic mutation that increases the expression relative to the wild type cell of an amino acid-N-acyl-transferase, at least a second genetic mutation that increases the expression relative to the wild type cell of an acyl-CoA synthetase, and at least a third genetic mutation that decreases the expression relative to the wild type cell of at least one enzyme selected from the group consisting of an enzyme of the glycine cleavage system, glycine hydroxymethyltransferase (GlyA) and threonine aldolase (LtaE).

Provided is a method for synthesizing a flavonoid compound. The method comprises providing a recombinant prokaryotic cell, wherein, in the prokaryotic cell, the transmembrane protein rhodanese Ygap of Escherichia coli is up-regulated or a target gene or target gene combination selected from the following groups is down-regulated: pyrB, accC, accB, purC, glyA, tktA, fabB, leuD, leuC, glpC, folK and leuA. Also provided are a prokaryotic cell for synthesizing a flavonoid compound and the use thereof, and the use of a kit and a regulation and control reagent. The present disclosure achieves significant improvement in the yield of the flavonoid compound.

Provided herein are genetically modified host cells, compositions, and methods for improved production of vanillin and/or glucovanillin. The host cells, compositions, and methods described herein provide an efficient route for the heterologous production of vanillin and/or glucovanillin and any compound that can be synthesized or biosynthesized from either or both.

The present invention provides a genetically engineered pantoic acid-producing strain having or having an enhanced NADH-dependent acetohydroxy acid reductoisomerase, a method for producing the strain, a method for producing D-pantoic acid using the strain, and use thereof in production of D-pantoic acid.

The present disclosure provides an isolated mammalian cell comprising a reduced or eliminated expression of Serine Hydroxymethyltransferase 2 (SHMT2). Further provided are methods for preparing such cells and methods for using such cells for the production of recombinant proteins.

The present invention relates to a genetically engineered microorganism expressing (i) formate tetrahydrofolate (THF) ligase, methenyi-THF cyclohydrolase and methylene-THF dehydrogenase, (ii) the enzymes of the glycine cleavage system (GCS), (iii) serine deaminase and serine hydroxymethyltransferase (SHMT), (iv) an enzyme increasing the availability of NADPH, and (v) optionally formate dehydrogenase (FDH), and wherein the genetically engineered microorganism has been genetically engineered to express at least one of the enzymes of (i) to (v), wheren said enzyme is not expressed by the corresponding microorganism that has been used to prepare the genetically engineered microorganism, and wherein the enzymes of (i) to (v) are genomically expressed.

The present disclosure provides a method for producing a methyl compound using glycine, serine, or an organic raw material.