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- W2106552103 abstract "We describe here a mass spectrometry (MS)-based analytical platform of RNA, which combines direct nano-flow reversed-phase liquid chromatography (RPLC) on a spray tip column and a high-resolution LTQ-Orbitrap mass spectrometer. Operating RPLC under a very low flow rate with volatile solvents and MS in the negative mode, we could estimate highly accurate mass values sufficient to predict the nucleotide composition of a approximately 21-nucleotide small interfering RNA, detect post-transcriptional modifications in yeast tRNA, and perform collision-induced dissociation/tandem MS-based structural analysis of nucleolytic fragments of RNA at a sub-femtomole level. Importantly, the method allowed the identification and chemical analysis of small RNAs in ribonucleoprotein (RNP) complex, such as the pre-spliceosomal RNP complex, which was pulled down from cultured cells with a tagged protein cofactor as bait. We have recently developed a unique genome-oriented database search engine, Ariadne, which allows tandem MS-based identification of RNAs in biological samples. Thus, the method presented here has broad potential for automated analysis of RNA; it complements conventional molecular biology-based techniques and is particularly suited for simultaneous analysis of the composition, structure, interaction, and dynamics of RNA and protein components in various cellular RNP complexes." @default.
- W2106552103 created "2016-06-24" @default.
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- W2106552103 date "2009-09-09" @default.
- W2106552103 modified "2023-10-14" @default.
- W2106552103 title "An analytical platform for mass spectrometry-based identification and chemical analysis of RNA in ribonucleoprotein complexes" @default.
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- W2106552103 doi "https://doi.org/10.1093/nar/gkp732" @default.
- W2106552103 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2790879" @default.
- W2106552103 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19740761" @default.
- W2106552103 hasPublicationYear "2009" @default.
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