Polypeptides having endopeptidase activity and polynucleotides encoding same
The present invention relates to polypeptides having endopeptidase activity and to methods of producing and using the polypeptides. The invention also relates to methods of making a food protein hydrolysate using a trypsin-like endopeptidase derived from a bacterium.
1. A method of producing a polypeptide having endopeptidase activity, comprising:
(a) providing a recombinant host cell comprising a polynucleotide encoding a polypeptide having endopeptidase activity operably linked to one or more heterologous control sequences that direct expression of the polypeptide, wherein the polypeptide comprises an amino acid sequence that has at least 90% sequence identity to the amino acid sequence of SEQ ID NO: 2;
(b) cultivating the recombinant host cell in a culture medium under conditions conducive for production of the polypeptide; and
(c) recovering the polypeptide from the culture medium.
2. A method of making a protein hydrolysate comprising:
(a) providing a solution comprising protein to be hydrolyzed;
(b) adding to said solution an isolated polypeptide having endopeptidase activity, and wherein the polypeptide comprises an amino acid sequence that has at least 90% sequence identity to the amino acid sequence of SEQ ID NO: 2; and
(c) obtaining the protein hydrolysate.
3. The method of claim 2 , wherein the protein to he hydrolyzed is food protein.
4. The method of claim 1 , wherein the polypeptide having endopeptidase activity has at least 95% sequence identity to the sequence of SEQ ID NO: 2.
5. The method of claim 1 , wherein the polypeptide having endopeptidase activity has at least 97% sequence identity to the sequence of SEQ ID NO: 2.
6. The method of claim 1 , wherein the polypeptide having endopeptidase activity has at least 98% sequence identity to the sequence of SEQ ID NO: 2.
7. The method of claim 1 , wherein the polypeptide having endopeptidase activity has at least 99% sequence identity to the sequence of SEQ ID NO: 2.
8. The method of claim 1 , wherein the polypeptide having endopeptidase activity comprises or consists of the amino acid sequence of SEQ ID NO: 2.
9. The method of claim 3 , wherein the solution comprising food protein is a solution comprising protein material from a plant and/or an animal.
10. The method of claim 2 , wherein the polypeptide having endopeptidase activity has at least 95% sequence identity to the sequence of SEQ ID NO: 2.
11. The method of claim 2 , wherein the polypeptide having endopeptidase activity has at least 97% sequence identity to the sequence of SEQ ID NO: 2.
12. The method of claim 2 , wherein the polypeptide having endopeptidase activity has at least 98% sequence identity to the sequence of SEQ ID NO: 2.
13. The method of claim 2 wherein the polypeptide having endopeptidase activity has at least 99% sequence identity to the sequence of SEQ ID NO: 2.
14. The method of claim 2 wherein the polypeptide having endopeptidase activity comprises or consists of the amino acid sequence of SEQ ID NO: 2.