Host cells that are engineered to produce benzylisoquinoline alkaloid (BIAs) precursors, such as norcoclaurine (NC) and norlaudanosoline (NL), are provided. The host cells may have one or more engineered modifications selected from: a feedback inhibition alleviating mutation in a enzyme gene; a transcriptional modulation modification of a biosynthetic enzyme gene; an inactivating mutation in an enzyme; and a heterologous coding sequence. Also provided are methods of producing a BIA of interest or a precursor thereof using the host cells and compositions, e.g., kits, systems etc., that find use in methods of the invention.

This invention involves to Bacillus licheniformis JSC-69 for producing the 5-HTP, deposited as CGMCC NO: 13533; and a method for the producing 5-HTP using Bacillus licheniformis. Bacillus licheniformis JSC-69 said in this invention produces 5-HTP using tryptophan as the substrate, and the transformation efficiency is 95%˜100%.

This invention involves to Bacillus licheniformis JSC-69 for producing the 5-HTP, deposited as CGMCC NO: 13533; and a method for the producing 5-HTP using Bacillus licheniformis. Bacillus licheniformis JSC-69 said in this invention produces 5-HTP using tryptophan as the substrate, and the transformation efficiency is 95%˜100%.

By substituting biomass with a surface-active substance in a fermentation broth containing amino acid before spray-drying, granulated animal feed additives with improved product specifications were obtained.

By substituting biomass with a surface-active substance in a fermentation broth containing amino acid before spray-drying, granulated animal feed additives with improved product specifications were obtained.

The present invention provides engineered tyrosine ammonia-lyase (TAL) polypeptides and compositions thereof. In some embodiments, the engineered TAL polypeptides have been optimized to provide enhanced catalytic activity while reducing sensitivity to proteolysis and increasing tolerance to acidic pH levels. The invention also provides methods for utilization of the compositions comprising the engineered TAL polypeptides for therapeutic and industrial purposes.

Provided herein are biocatalysts and systems thereof for pterin-dependent enzymes and pathways and methods of making and using the same. Provided herein in some embodiments are biocatalysts having a pterin source and a pterin-dependent enzymatic pathway biologically coupled to the pterin source. Tetrahydrobiopterin (referred to herein as BH4 or BH 4) can be the pterin source. The BH4 can be synthesized by a tetrahydrobiopterin synthesis pathway. The tetrahydrobiopterin synthesis pathway can include a GTP cyclohydrase; a pyruvoyl tetrahydropterin synthase; a sepiapterin reductase, and/or any combination thereof. The biocatalyst can further contain a pterin-dependent enzymatic pathway. The pterin-dependent enzymatic pathway can be amino acid mono-oxygenase, phenylalanine hydroxylase, tryptophan hydroxylase, tyrosine hydroxylase, nitric oxide synthase, alkylglycerol monooxygenase, and/or any combination thereof.

Aspects of the invention relate to methods of producing small molecules for industrial application using natural organisms and engineered organisms.

The present invention provides engineered tyrosine ammonia-lyase (TAL) polypeptides and compositions thereof. In some embodiments, the engineered TAL polypeptides have been optimized to provide enhanced catalytic activity while reducing sensitivity to proteolysis and increasing tolerance to acidic pH levels. The invention also provides methods for utilization of the compositions comprising the engineered TAL polypeptides for therapeutic and industrial purposes.

The present invention generally relates to the microbiological industry, and specifically to the production of L-serine or L-serine derivatives 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.