title: Site-specific biotinylation of RNA molecules by transcription using unnatural base pairs.
abstract: Direct site-specific biotinylation of RNA molecules was achieved by specific transcription mediated by unnatural base pairs. Unnatural base pairs between 2-amino-6-(2-thienyl)purine (denoted by s) and 2-oxo(1H)pyridine (denoted by y), or 2-amino-6-(2-thiazolyl)purine (denoted as v) and y specifically function in T7 transcription. Using these unnatural base pairs, the substrate of biotinylated-y (Bio-yTP) was selectively incorporated into RNA, opposite s or v in the DNA templates, by T7 RNA polymerase. This method was applied to the immobilization of an RNA aptamer on sensor chips, and the aptamer accurately recognized its target protein. This direct site-specific biotinylation will provide a tool for RNA-based biotechnologies.
authors.affiliation: Research Center for Advanced Science and Technology, The University of Tokyo 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan.
authors.forename: Kei
authors.initials: K
authors.lastname: Moriyama
authors.forename: Michiko
authors.initials: M
authors.lastname: Kimoto
authors.forename: Tsuneo
authors.initials: T
authors.lastname: Mitsui
authors.forename: Shigeyuki
authors.initials: S
authors.lastname: Yokoyama
authors.forename: Ichiro
authors.initials: I
authors.lastname: Hirao
mesh_terms: D020029:Base Pairing; D001710:Biotin / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry / Q000378:metabolism; D019921:Biotinylation; D012321:DNA-Directed RNA Polymerases / Q000378:metabolism; D009705:Nucleosides / Q000138:chemical synthesis / Q000737:chemistry* / Q000378:metabolism; D009843:Oligoribonucleotides / Q000737:chemistry*; D011685:Purine Nucleotides / Q000737:chemistry; D011687:Purines / Q000737:chemistry; D011728:Pyridones / Q000737:chemistry; D012313:RNA / Q000096:biosynthesis / Q000737:chemistry*; D020349:Surface Plasmon Resonance; D013698:Templates, Genetic; D014158:Transcription, Genetic; D014764:Viral Proteins / Q000378:metabolism
chemical_list: C435686:2-amino-6-(2-thienyl)purine; C503404:4-(3-(biotinamido)propynyl)-2-oxo(1H)pyridin-3-ylribofuranosyl triphosphate; D009705:Nucleosides; D009843:Oligoribonucleotides; D011685:Purine Nucleotides; D011687:Purines; D011728:Pyridones; D014764:Viral Proteins; D012313:RNA; D001710:Biotin; C062210:bacteriophage T7 RNA polymerase; D012321:DNA-Directed RNA Polymerases