A Photocrosslinking-Based RNA Chemical Proteomics Approach to Profile m6 A-Regulated Protein-RNA Interactions.

TitleA Photocrosslinking-Based RNA Chemical Proteomics Approach to Profile m6 A-Regulated Protein-RNA Interactions.
Publication TypeJournal Article
Year of Publication2018
AuthorsA Arguello, E, Srikumar, T, Kleiner, RE
JournalCurr Protoc Nucleic Acid Chem
Volume75
Issue1
Paginatione69
Date Published2018 Dec
ISSN1934-9289
Abstract

Post-transcriptional modifications play an important role in RNA biology. In particular, the addition of small chemical groups to the nucleobases of mRNA can affect how modified transcripts are processed in the cell, thereby impacting gene expression programs. In order to study the molecular mechanisms underlying these modifications, it is necessary to characterize their 'readers', that is, proteins that directly bind to these modifications to mediate their functional consequences; this is a major challenge because we lack approaches to precisely manipulate RNA chemistry in the cell and because protein-modified RNA interactions can be low affinity. In this unit, we describe in detail a photocrosslinking-based RNA chemical proteomics approach to profile the protein-modified RNA interactome modulated by N6 -methyladenosine (m6 A), the most abundant internal modification in eukaryotic mRNA. First, we present protocols for the synthesis and characterization of short, diazirine-containing synthetic RNA probes, followed by a description of their use in mass spectrometry-based proteomics with HeLa cell lysate and a short commentary on data analysis and result interpretation.

DOI10.1002/cpnc.69
Alternate JournalCurr Protoc Nucleic Acid Chem
PubMed ID30408339
Grant ListDFS #21-16 / / Damon Runyon Cancer Research Foundation / United States
/ / Sidney Kimmel Foundation /
/ / Department of Chemistry at Princeton University /