Provided herein are compositions and methods for producing milk proteins in plants, which allow for safe, sustainable and humane production of milk proteins for commercial use, such as use in food compositions. The disclosure provides recombinant fusion proteins comprising a milk protein, or fragment thereof and a structured mammalian, avian, plant, or fungal protein, or fragment thereof. The disclosure also provides methods for producing the recombinant fusions proteins, and food compositions comprising the same.

This disclosure provides for methods and compositions for the expression and secretion of heme-containing polypeptides.

The present invention relates to cellobiohydrolase variants and carbohydrate binding module variants. The present invention also relates to polynucleotides encoding the variants; nucleic acid constructs, vectors, and host cells comprising the polynucleotides; and methods of using the variants.

The present invention provides a plant expressing a target protein, a method of preparing the same and a method of preparing a composition for oral administration of a biopharmaceutical using the same. A target protein expression system using plant cells according to the present invention solves conventional problems in plant cell culture, provides a method of producing a large quantity of target proteins including a biopharmaceutical protein and allowing a target protein to have a resistance to a protease present in a digestive organ, and therefore is very effective to enable commercialization of plant-derived biopharmaceuticals.

The present invention relates to methods of synthesizing long-chain polyunsaturated fatty acids, especially eicosapentaenoic acid, docosapentaenoic acid and docosahexaenoic acid, in recombinant cells such as yeast or plant cells. Also provided are recombinant cells or plants which produce long-chain polyunsaturated fatty acids. Furthermore, the present invention relates to a group of new enzymes which possess desaturase or elongase activity that can be used in methods of synthesizing long-chain polyunsaturated fatty acids. In particular, the present invention provides ω3 destaurases, Δ5 elongases and Δ6 desaturases with novel activities. Also provided are methods and DNA constructs for transiently and/or stably transforming cells, particularly plant cells, with multiple genes.

The present invention pertains to a method of expressing a protein of interest, preferably a heterologous protein, in preferably a plant. In a preferred embodiment said plant is a doubled haploid homozygous transgenic Nicotiana tabacum plant silenced for Ntp303. Furthermore, the invention relates to said plant with or without nucleic acid constructs according to the invention. Propagation, harvest and tissue material of said transgenic Nicotiana tabacum plant is also a part of the invention.

The present disclosure relates to methods and constructs for producing heterologous peptides and proteins in plants in a safe and controlled manner. One aspect of the present invention provides a method of producing heterologous protein in a transformed potato plant using an expression cassette comprising a gene coding for a protein or peptide of interest and a marker gene, a nucleotide sequence capable of suppressing patatin expression, along with a nucleotide sequence capable of suppressing CD4B expression, and/or a nucleotide sequence capable of overexpressing P19. Another aspect of the invention provides a method of producing a heterologous protein in a transformed potato plant using an expression cassette comprising a gene coding for a protein or peptide of interest, a marker gene, a transit peptide sequence, and a nucleotide sequence capable of suppressing ADP glucose pyrophosphorylase expression.

Disclosed is a chromatographic method for separating and purifying a recombinant human fibronectin from a genetically engineered rice seed that expresses the human fibronectin. In the method, the genetically engineered rice seed is milled, mixed with an extraction buffer, and then filtered to obtain a crude extract comprising the recombinant human fibronectin; the crude extract comprising the recombinant human fibronectin is subjected to cation exchange chromatography, so as to perform primary separation and purification, thereby obtaining a primary product comprising the recombinant human fibronectin; and the primary product is subjected to anion exchange chromatography so as to perform final separation and purification to obtain the recombinant human fibronectin as a target substance. The method is low cost and easily utilized on an industrial scale. The obtained OsrhFn target substance has a SEC-HPLC purity greater than 95% with excellent bioactivity.

Plant-based, edible vaccines are provided. The vaccines are or are made from plants that are genetically engineered to express antigens of disease-causing microbes, for example, antigens of the MERS-CoV virus, such as the S1 subunit of the spike protein.

The present disclosure describes reproducible methods for the Agrobacterium-mediated production of stable, genetically transformed, fertile tarwi plants (Lupinus mutabilis Sweet) having seed-specific expression of human adenosine deaminase enzyme (hADA) or a functional variant thereof. The method involves slicing a tarwi seed embryo to produce an explant; infecting the explant in co-cultivation medium containing an agrobacterium having a polynucleotide sequence encoding hADA or variant; thereby generating a transformed explant; elongating a transformed shoot from the transformed explant; and regenerating a transformed tarwi plant from the elongated shoot. Seeds and plants so formed are also described herein. Further, methods for the recovery and purification of recombinant hADA, or functional variant from a transformed tarwi plant are described.