title: Isolation and posttranscriptional modification analysis of native BC1 RNA from mouse brain.
abstract: We present a simple and general affinity method, based on size fractionation and nucleic acid complementarity, to isolate sufficient amounts of native RNA molecules for further physicochemical studies, such as modification state of nucleotides. In the case presented here, we purified four micrograms of dendritic neuronal BC1 RNA from 130 grams of mouse brain (initially yielding a total of 200 mg RNA). Directly combined liquid chromatography-electrospray ionization mass spectrometry (LC/MS) analysis revealed no base or sugar backbone modifications in native BC1 RNA, despite earlier indications that C-54 could be methylated in vitro (Cm5, position 54).
authors.affiliation: Institute of Experimental Pathology (ZMBE), University of Münster, Münster, Germany.
authors.forename: Timofey S
authors.initials: TS
authors.lastname: Rozhdestvensky
authors.forename: Pamela F
authors.initials: PF
authors.lastname: Crain
authors.forename: Jürgen
authors.initials: J
authors.lastname: Brosius
mesh_terms: D000818:Animals; D001483:Base Sequence; D002853:Chromatography, Liquid; D017931:DNA Primers; D004591:Electrophoresis, Polyacrylamide Gel; D006367:HeLa Cells; D006801:Humans; D051379:Mice; D012323:RNA Processing, Post-Transcriptional; D020733:RNA, Small Cytoplasmic / Q000302:isolation & purification* / Q000378:metabolism; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: C117734:BC1 RNA; D017931:DNA Primers; D020733:RNA, Small Cytoplasmic