High-resolution profiling of protein occupancy on polyadenylated RNA transcripts

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Abstract

A key prerequisite to understand how gene regulatory processes are controlled by the interplay of RNA-binding proteins and ribonucleoprotein complexes with RNAs is the generation of comprehensive high-resolution maps of protein-RNA interactions. Recent advances in next-generation sequencing technology accelerated the development of various crosslinking and immunoprecipitation (CLIP) approaches to broadly identify RNA regions contacted by RNA-binding proteins. However these methods only consider single RNA-binding proteins and their contact sites, irrespective of the overall cis-regulatory sequence space contacted by other RNA interacting factors. Here we describe the application of protein occupancy profiling, a novel approach that globally displays the RNA contact sites of the poly(A)+ RNA-bound proteome. Protein occupancy profiling enables the generation of transcriptome-wide maps of protein-RNA interactions on polyadenylated transcripts and narrows the sequence search space for transcript regions involved in cis-regulation of gene expression in response to internal or external stimuli, altered cellular programs or disease. © 2013 The Authors.

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Munschauer, M., Schueler, M., Dieterich, C., & Landthaler, M. (2014). High-resolution profiling of protein occupancy on polyadenylated RNA transcripts. Methods, 65(3), 302–309. https://doi.org/10.1016/j.ymeth.2013.09.017

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