The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 1998
Filed:
Sep. 09, 1996
Sagami Chemical Research Center, Tokyo, JP;
Abstract
A cloning vector plasmid suitable for preparing cDNA banks is disclosed. The cloning vector plasmid of the present invention comprises, in the order mentioned from upstream to downstream unless otherwise specified, a promoter PR1 acting in mammalian cells; a unique restriction enzyme site RE1 rarely existing in eukaryotic DNA and a transcription promoter PR2; a unique restriction enzyme site RE2 generating a 3'-protruding dG tail; a unique arbitrary restriction enzyme site RE3; a unique arbitrary restriction enzyme site RE4 generating a 3'-protruding terminus; a unique restriction enzyme site RE5 rarely existing in eukaryotic DNA and a transcription promoter PR3; and at least one kind of arbitrary restriction enzyme site RE6 generating a 3'-protruding terminus existing at an arbitrary position before the restriction site RE1; and further, at arbitrary positions other than the above-described restriction enzyme sites and promoters, an origin OR1 for replication in mammalian cells, an origin OR2 for replication of a single-stranded phage, an origin OR3 for replication in E. coli, and a selective marker.