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:
Feb. 16, 1999
Filed:
Jun. 06, 1995
Fred Russell Kramer, Bronx, NY (US);
Eleanor Anne Miele, Brooklyn, NY (US);
Donald Robert Mills, Englewood, NJ (US);
The Trustees of Columbia University in the City of New York, New York, NY (US);
Abstract
This invention provides a method for producing a mutant virus or viroid, or a mutant recombinant RNA molecule comprising a single stranded virus genome or a single stranded viroid genome, a circular virus genome or a circular viroid genome, or a segment of a virus genome or a segment of a viroid genome which comprises incubating a recombinant single-stranded RNA molecule comprising a recognition sequence for the binding of an RNA directed RNA polymerase, a sequence for the initiation of product strand synthesis by the polymerase and a heterologous sequence of interest derived from a different RNA molecule inserted at a specific site in the internal region of the recombinant molecule under appropriate selective conditions and for a sufficient period of time permitting the selection of a mutant population, the heterologous sequence of interest comprising the RNA of the single stranded virus genome or the single stranded viroid genome, the circular virus genome or the circular viroid genome or a segment of the virus genome or a segment of the viroid genome.