alexa Insights into RNA biology from an atlas of mammalian mRNA-binding proteins.
Genetics

Genetics

Molecular Biology: Open Access

Author(s): Castello A, Fischer B, Eichelbaum K, Horos R, Beckmann BM, , Castello A, Fischer B, Eichelbaum K, Horos R, Beckmann BM,

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Abstract RNA-binding proteins (RBPs) determine RNA fate from synthesis to decay. Employing two complementary protocols for covalent UV crosslinking of RBPs to RNA, we describe a systematic, unbiased, and comprehensive approach, termed "interactome capture," to define the mRNA interactome of proliferating human HeLa cells. We identify 860 proteins that qualify as RBPs by biochemical and statistical criteria, adding more than 300 RBPs to those previously known and shedding light on RBPs in disease, RNA-binding enzymes of intermediary metabolism, RNA-binding kinases, and RNA-binding architectures. Unexpectedly, we find that many proteins of the HeLa mRNA interactome are highly intrinsically disordered and enriched in short repetitive amino acid motifs. Interactome capture is broadly applicable to study mRNA interactome composition and dynamics in varied biological settings. Copyright © 2012 Elsevier Inc. All rights reserved. This article was published in Cell and referenced in Molecular Biology: Open Access

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