title: Targeted gene walking polymerase chain reaction.
abstract: We describe a modification of a polymerase chain reaction method called 'targeted gene walking' that can be used for the amplification of unknown DNA sequences adjacent to a short stretch of known sequence by using the combination of a single, targeted sequence specific PCR primer with a second, nonspecific 'walking' primer. This technique can replace conventional cloning and screening methods with a single step PCR protocol to greatly expedite the isolation of sequences either upstream or downstream from a known sequence. A number of potential applications are discussed, including its utility as an alternative to cloning and screening for new genes or cDNAs, as a method for searching for polymorphic sites, restriction endonuclease or regulatory regions, and its adaptation to rapidly sequence DNA of lengthy unknown regions that are contiguous to known genes.
authors.affiliation: Department of Pathology, University of Washington, Seattle 98195.
authors.forename: J D
authors.initials: JD
authors.lastname: Parker
authors.forename: P S
authors.initials: PS
authors.lastname: Rabinovitch
authors.forename: G C
authors.initials: GC
authors.lastname: Burmer
mesh_terms: D001345:Autoradiography; D001483:Base Sequence; D004247:DNA / Q000235:genetics*; D006367:HeLa Cells; D006801:Humans; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction / Q000379:methods*; D013698:Templates, Genetic
chemical_list: D004247:DNA