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Last Updated: September 30, 2020

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Patent: 5,698,421

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Summary for Patent: 5,698,421
Title: Ribonucleoprotein particles for cleaving double-stranded DNA and inserting an RNA/DNA molecule into the cleavage site
Abstract:The present invention provides new methods, employing a nucleotide integrase, for cleaving double-stranded and single stranded DNA substrates at specific sites and for attaching nucleic acid molecules to the cleaved DNA substrates. One method uses a nucleotide integrase to cleave one strand of a double-stranded DNA and to concomitantly attach a nucleic acid molecule to the cleaved strand. Another method uses a nucleotide integrase to cleave both strands of a double-stranded DNA substrate and to attach a nucleic acid molecule to one strand of the DNA substrate. Another method uses a nucleotide integrase to cleave both strands of a double-stranded DNA substrate and to attach an RNA molecule to one strand of the substrate and for attaching a cDNA to the other strand of the substrate. Another method cleaves single stranded DNA with the concomitant insertion of a nucleic acid molecule at the cleavage point. The nucleotide integrase comprises an RNP particle which comprises a group II intron RNA bound to a group II intron encoded protein. The present invention also relates to purified and reconstituted RNP particles and reconstituted RNP that cleave DNA substrates.
Inventor(s): Lambowitz; Alan M. (Columbus, OH), Zimmerly; Steven (Columbus, OH), Yang; Jian (Columbus, OH), Guo; Huatao (Columbus, OH)
Assignee: The Ohio State Research Foundation (Columbus, OH)
Application Number:08/526,964
Patent Claims:see list of patent claims

Details for Patent 5,698,421

Applicant Tradename Biologic Ingredient Dosage Form BLA Number Approval Date Patent No. Assignee Estimated Patent Expiration Status Orphan Source
Schering INTRON A interferon alfa-2b VIAL 103132 001 1986-06-04   Start Trial The Ohio State Research Foundation (Columbus, OH) 2039-02-26 RX search
Schering INTRON A interferon alfa-2b VIAL 103132 002 1986-06-04   Start Trial The Ohio State Research Foundation (Columbus, OH) 2039-02-26 RX search
Schering INTRON A interferon alfa-2b VIAL 103132 003 1986-06-04   Start Trial The Ohio State Research Foundation (Columbus, OH) 2039-02-26 RX search
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Number >Approval Date >Patent No. >Assignee >Estimated Patent Expiration >Status >Orphan >Source

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