Recombinant milk proteins
Provided herein are compositions and methods for producing recombinant milk proteins, as well as food compositions comprising the same. In aspects, the recombinant milk proteins of the disclosure are recombinant fusion proteins comprising casein and beta-lactoglobulin.
1. A seed processing composition, comprising:
a) a fusion protein, comprising i) a full-length κ-casein or para-κ-casein component; and ii) a β-lactoglobulin component; and
b) plant seed tissue.
2. The seed processing composition of claim 1 , wherein the plant seed tissue is ground.
3. The seed processing composition of claim 1 , wherein the plant seed tissue is soybean.
4. The seed processing composition of claim 1 , further comprising at least one member selected from the group consisting of: enzyme, protease, chymosin, extractant, solvent, phenol, buffer, additive, salt, protease inhibitor, peptidase inhibitor, osmolyte, and reducing agent.
5. A food composition comprising the seed processing composition of claim 1 .
6. A protein concentrate composition, comprising a protein concentrate of a fusion protein comprising i) a full-length κ-casein or para-κ-casein component, and ii) a β-lactoglobulin component.
7. The protein concentrate composition of claim 6 , wherein there is no plant seed tissue present.
8. The protein concentrate composition of claim 6 , further comprising at least one member selected from the group consisting of: enzyme, protease, chymosin, extractant, solvent, phenol, buffer, additive, salt, protease inhibitor, peptidase inhibitor, osmolyte, and reducing agent.
9. The protein concentrate composition of claim 6 , further comprising chymosin.
10. A food composition comprising the protein concentrate composition of claim 6 .
11. A food composition, comprising: a fusion protein, comprising i) a full-length κ-casein or para-κ-casein component, and ii) a β-lactoglobulin component.
12. The food composition of claim 11 , wherein the food composition comprises the fusion protein comprising the full-length κ-casein component and a β-lactoglobulin component.
13. The food composition of claim 11 , wherein the food composition comprises the fusion protein comprising the para-κ-casein component and a β-lactoglobulin component.
14. The food composition of claim 11 , wherein the food composition is a solid.
15. The food composition of claim 11 , wherein the food composition is a liquid.
16. The food composition of claim 11 , wherein the food composition is a powder.
17. The food composition of claim 11 , wherein the food composition is selected from the group consisting of: cheese, processed cheese product, fermented dairy product, directly acidified counterpart of fermented dairy product, cottage cheese, dressing, frozen dairy product, frozen dessert, dessert, baked good, topping, icing, filling, low-fat spread, dairy-based dry mix, soup, sauce, salad dressing, geriatric nutrition, cream, creamer, analog dairy product, follow-up formula, baby formula, infant formula, milk, dairy beverage, acid dairy drink, smoothie, milk tea, butter, margarine, butter alternative, growing up milk, low-lactose product, low-lactose beverage, medical and clinical nutrition product, protein bar, nutrition bar, sport beverage, confection, meat product, analog meat product, meal replacement beverage, weight management food and beverage, dairy product, cultured buttermilk, sour cream, yogurt, skyr, leben, lassi, kefir, powder containing a milk protein, and low-lactose product.
18. The food composition of claim 11 , wherein the food composition is a dairy product.
19. The food composition of claim 11 , wherein the food composition is an analog dairy product.
20. The food composition of claim 11 , wherein the food composition is a low lactose product.
21. The food composition of claim 11 , wherein the food composition is a milk.
22. The food composition of claim 11 , wherein the food composition is a cheese.
23. The food composition of claim 11 , wherein the food composition is fermented.
24. A method of making a food composition, comprising:
combining a fusion protein, comprising i) a full-length κ-casein or para-κ-casein component, and ii) a β-lactoglobulin component, into a food composition.
25. The method of claim 24 , wherein the food composition is selected from the group consisting of: cheese, processed cheese product, yogurt, fermented dairy product, directly acidified counterpart of fermented dairy product, cottage cheese, dressing, frozen dairy product, frozen dessert, dessert, baked good, topping, icing, filling, low-fat spread, dairy-based dry mix, soup, sauce, salad dressing, geriatric nutrition, cream, creamer, analog dairy product, follow-up formula, baby formula, infant formula, milk, dairy beverage, acid dairy drink, smoothie, milk tea, butter, margarine, butter alternative, growing up milk, low-lactose product, low-lactose beverage, medical and clinical nutrition product, protein bar, nutrition bar, sport beverage, confection, meat product, analog meat product, meal replacement beverage, weight management food and beverage, dairy product, cultured buttermilk, sour cream, yogurt, skyr, leben, lassi, kefir, powder containing a milk protein, and low-lactose product.
26. The method of claim 24 , wherein the food composition is a dairy product.
27. The method of claim 24 , wherein the food composition is a cheese.
28. A food composition made by the method of claim 24 .
29. A method for making a fusion protein, comprising:
(a) transforming a host cell with a vector comprising an expression cassette comprising a nucleic acid molecule encoding the fusion protein, wherein the fusion protein comprises i) a full-length κ-casein or para-κ-casein component, and ii) a β-lactoglobulin component, and
(b) growing the transformed host cell under conditions wherein the fusion protein is expressed.
30. The method of claim 29 , wherein the host cell is selected from the group consisting of plant cells, bacterial cells, fungal cells, and mammalian cells.
31. The method of claim 29 , wherein the host cell is a plant cell.
32. A fusion protein made by the method of claim 29 .