EP0001929A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Plasmid for transforming bacterial host to render it capable of polypeptide expression
Assignee: Genentech Inc
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Filing: 1978-11-06
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Granted: —
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Expires: 1998-11-06
Abstract
Abstract Recombinant microbial cloning vehicles comprising heterologous DNA coding for the expression of mammalian hormones (e.g., somatostatin) and other polypeptides, in- duding plasmids suited for the transformation of bacterial hosts are prepared. The latter incorporate a regulon homologous to the host in its untransformed state, in reading phase with the structural gene for the heterologous DNA.
Inventors
- 👤 Keiichi Itakura
- 👤 Arthur Dale Riggs
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 08:04
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/575; C07K14/62; C12; C12N; C12N15/00; C07K2319/00; C07K2319/70; C07K2319/71
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
74 words
A recombinant plasmid suited for transformation of a hactexial host and use therein as a cloning vehicle, characterised in that the plasmid comprises: a) A regulon homologous to the bacterial host in its untransformed state; and by In reading phase with the regulon, a DNA insert coding for the amino acid sequence of a heterologous polypeptide, such that bacteria transformed by the plasmid are capable of expressing said amino acid sequence in recoverable form.
Claim 2
Dependent Claim
7 words
A bacterial plasmid according to claim 1.
Claim 3
Dependent Claim
22 words
A plasmid according to claim 2 whose regulon is essentially identical to a regulon ordinarily present in the bacterial host's chromosomal DNA.
Claim 4
Dependent Claim
33 words
A plasmid according to claim 2 wherein the regulon comprises the promoter - operator system of an operon selected from the group consisting of E. coli. lac operon and E. coli. tryptophan operon.
Claim 5
Dependent Claim
22 words
A plasmid according to any one of the preceding claims wherein the heterologous polypeptide is a mammalian hormone or an intermediate therefor.
Claim 6
Dependent Claim
38 words
A plasmid according to claim 5 wherein the heterologous polypeptide is human preproinsulin, human proinsulin, the A chain of human insulin, the B chain of human insulin, human or bovine growth hormone, leutinizing hormone, ACTH or pancreatic polypeptide.
Claim 7
Dependent Claim
14 words
A plasmid according to claim 5 wherein the heterologous polypeptide is a mammalian hormone.
Claim 8
Dependent Claim
12 words
A plasmid according to claim 5 wherein the heterologous polypeptide is somatostatin.
Claim 9
Dependent Claim
21 words
A plasmid according to claim 8 wherein the regulon comprises the promoter - operator system of the E. coli. lac operon.
Claim 10
Dependent Claim
29 words
A plasmid according to any one of the preceding claims for use in the transformation of a bacterial host to render said host capable of expressing a heterologous polypeptide.
References Cited (Backward Citations)
No citation records indexed.
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