Efficient analysis of mammalian polysomes in cells and tissues using Ribo Mega-SEC

We describe Ribo Mega-SEC, a powerful approach for the separation and biochemical analysis of mammalian polysomes and ribosomal subunits using Size Exclusion Chromatography and uHPLC. Using extracts from either cells, or tissues, polysomes can be separated within 15 min from sample injection to frac...

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Bibliographic Details
Published in:eLife 2018-08, Vol.7
Main Authors: Yoshikawa, Harunori, Larance, Mark, Harney, Dylan J, Sundaramoorthy, Ramasubramanian, Ly, Tony, Owen-Hughes, Tom, Lamond, Angus I
Format: Article
Language:English
Subjects:
Amino Acids - chemistry
Amino Acids - genetics
Animals
Biochemistry and Chemical Biology
Cell Line
Chromatography, High Pressure Liquid
Humans
mammalian cells/ tissues
Mice
mouse liver tissue
MS-based proteomics
Polyribosomes - chemistry
Polyribosomes - genetics
polysome profile
Protein Biosynthesis
Proteomics
ribosome
Ribosomes - chemistry
Ribosomes - genetics
size exclusion chromatography (SEC)
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Summary:We describe Ribo Mega-SEC, a powerful approach for the separation and biochemical analysis of mammalian polysomes and ribosomal subunits using Size Exclusion Chromatography and uHPLC. Using extracts from either cells, or tissues, polysomes can be separated within 15 min from sample injection to fraction collection. Ribo Mega-SEC shows translating ribosomes exist predominantly in polysome complexes in human cell lines and mouse liver tissue. Changes in polysomes are easily quantified between treatments, such as the cellular response to amino acid starvation. Ribo Mega-SEC is shown to provide an efficient, convenient and highly reproducible method for studying functional translation complexes. We show that Ribo Mega-SEC is readily combined with high-throughput MS-based proteomics to characterize proteins associated with polysomes and ribosomal subunits. It also facilitates isolation of complexes for electron microscopy and structural studies.
ISSN:2050-084X
2050-084X
DOI:10.7554/eLife.36530