Claims for Patent: 5,629,205

Summary for Patent: 5,629,205

Title:	Promoters for gene expression
Abstract:	The present invention provides a novel expression system for the production of protein in bacterial hosts. The system utilizes novel promoters that are highly efficient in initializing transcription and therefore enhance protein yield. The promoters comprise the -35 region of the consensus E. coli promoter, the -10 region of the lppP-5 promoter and a spacer between these two regions derived from either the lpp or lacUV5 promoters.
Inventor(s):	Lagosky; Peter A. (Toronto, CA)
Assignee:	Allelix Biopharmaceuticals Inc. (Ontario, CA)
Application Number:	08/445,133
Patent Claims:	1. A recombinant DNA construct which expresses a protein in a bacterial host cell, the construct comprising a coding region for the protein operably linked with a control region comprising a promoter which promotes expression of said protein in the host cell, wherein the promoter comprises a DNA sequence selected from the group consisting of SEQ ID NO:1 and SEQ ID NO:2. 2. The recombinant DNA construct according to claim 1, wherein said promoter comprises the DNA sequence of SEQ ID NO:1. 3. The recombinant DNA construct according to claim 1, wherein said bacterial host cell is an E. coli cell. 4. The recombinant DNA construct according to claim 3, wherein said control region further comprises an operator for regulating expression of the protein. 5. The recombinant DNA construct according to claim 4, wherein the operator is the lac operator. 6. The recombinant DNA construct according to claim 5, wherein the protein is human parathyroid hormone. 7. The recombinant DNA construct according to claim 6, further comprising DNA coding for an OmpA signal peptide in reading frame with the coding region, thereby promoting secretion of the protein to the periplasm of the host cell. 8. The recombinant DNA construct according to claim 3, wherein the control region further comprises a T5 ribosome binding site having the DNA sequence of SEQ ID NO:5. 9. The recombinant DNA construct according to claim 3, wherein the control region comprises the sequence of SEQ ID NO:12. 10. The recombinant DNA construct according to claim 3, wherein the control region comprises the sequence of SEQ ID NO:13. 11. A vector comprising the recombinant DNA construct according to claim 1. 12. A vector comprising the recombinant DNA construct according to claim 4. 13. A vector comprising the recombinant DNA construct according to claim 5. 14. A vector comprising the recombinant DNA construct according to claim 6. 15. A vector comprising the recombinant DNA construct according to claim 7. 16. A vector comprising the recombinant DNA construct according to claim 8. 17. A vector comprising the recombinant DNA construct according to claim 9. 18. A vector comprising the recombinant DNA construct according to claim 10. 19. The vector according to claim 11, further comprising the lacI.sup.q gene. 20. The vector according to claim 11, further comprising the par element.

Details for Patent 5,629,205

Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Nps Pharmaceuticals, Inc.	NATPARA	parathyroid hormone	For Injection	125511	01/23/2015		2039-02-26