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Related Experiment Video

Updated: May 7, 2026

Eukaryotic Polyribosome Profile Analysis

Published on: June 15, 2010

Analysis of polysomes from bacteria.

Daoming Qin¹, Kurt Fredrick

¹Ohio State Biochemistry Program, The Ohio State University, Columbus, OH, USA.

Methods in Enzymology

|September 17, 2013

Summary

This summary is machine-generated.

This study presents a straightforward method for analyzing polysomes, which are complexes of ribosomes translating mRNA. This technique offers a snapshot of cellular translation activity and aids in studying gene expression and protein synthesis.

Keywords:

Cell lysates Polysomes Pump gradients Sedimentation Sucrose gradients

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Last Updated: May 7, 2026

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Published on: June 15, 2010

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Published on: April 8, 2018

Analysis of Translation Initiation During Stress Conditions by Polysome Profiling

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Published on: May 19, 2014

Area of Science:

Molecular Biology
Genetics
Biochemistry

Background:

Actively translating cells form polysomes, complexes of multiple ribosomes on a single mRNA molecule.
Polysomes sediment faster than single ribosomes or ribosomal subunits through sucrose gradients.
Polysome profiling provides a snapshot of cellular translation activity.

Purpose of the Study:

To describe a simple and convenient method for preparing and analyzing polysomes from Escherichia coli.
To provide insights into factors influencing ribosome density on mRNA for accurate polysome profile interpretation.
To facilitate the study of translation dynamics and associated cellular components.

Main Methods:

Preparation of bacterial lysates.
Resolution of ribosomal fractions using sucrose gradient sedimentation.
Analysis of the resulting polysome profile.

Main Results:

Demonstrated a straightforward method for polysome preparation and analysis in E. coli.
Highlighted the utility of polysome profiling for studying translation and gene expression.
Provided a framework for interpreting polysome profiles in the context of ribosome density.

Conclusions:

The described method is generally applicable to many bacteria.
Polysome analysis is a valuable tool for understanding translation regulation.
Interpretation of polysome profiles requires consideration of ribosome density parameters.