DOI: 10.1101/480061Nov 27, 2018Paper

Systematic discovery of endogenous human ribonucleoprotein complexes

BioRxiv : the Preprint Server for Biology
Anna L MallamKevin Drew

Abstract

RNA-binding proteins (RBPs) play essential roles in biology and are frequently associated with human disease. While recent studies have systematically identified individual RBPs, their higher order assembly into Ribonucleoprotein (RNP) complexes has not been systematically investigated. Here, we describe a proteomics method for systematic identification of RNP complexes in human cells. We identify 1,428 protein complexes that associate with RNA, indicating that over 20% of known human protein complexes contain RNA. To explore the role of RNA in the assembly of each complex, we identify complexes that dissociate, change composition, or form stable protein-only complexes in the absence of RNA. Importantly, these data also provide specific novel insights into the function of well-studied protein complexes not previously known to associate with RNA, including replication factor C (RFC) and cytokinetic centralspindlin complex. Finally, we use our method to systematically identify cell-type specific RNA-associated proteins in mouse embryonic stem cells. We distribute these data as a resource, rna.MAP (rna.proteincomplexes.org) which provides a comprehensive dataset for the study of RNA-associated protein complexes. Our system thus pr...Continue Reading

Related Concepts

Laboratory mice
RNA
RNA, Viral
RNA-Binding Proteins
Replication Protein C
Proteomics
Molecular Assembly/Self Assembly
Human Embryonic Stem Cells
Protein complex
HNRNPK protein, human

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