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Related Concept Videos

Ribosome Profiling02:24

Ribosome Profiling

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Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
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Related Experiment Video

Updated: May 4, 2026

Translating Ribosome Affinity Purification TRAP to Investigate Arabidopsis thaliana Root Development at a Cell Type-Specific Scale
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Translating ribosome affinity purification (TRAP) for cell-specific translation profiling in developing flowers.

Ying Wang1, Yuling Jiao

  • 1State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.

Methods in Molecular Biology (Clifton, N.J.)
|January 8, 2014
PubMed
Summary

This study details translating ribosome affinity purification (TRAP) for isolating cell-specific translating messenger RNAs (mRNAs). TRAP provides a more accurate proteome proxy than standard mRNA isolation methods.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Developmental Biology

Background:

  • Multicellular organism development involves cell differentiation and cell-specific responses to stimuli.
  • Understanding cell-specific gene expression is crucial for studying biological processes.
  • Existing methods for gene expression profiling may not accurately reflect active protein synthesis.

Purpose of the Study:

  • To describe a method for obtaining cell-specific gene expression profiles.
  • To detail the immunopurification of epitope-labeled polysomes and associated RNAs from specific cell types.
  • To highlight the advantages of translating ribosome affinity purification (TRAP) for gene expression analysis.

Main Methods:

  • Translating ribosome affinity purification (TRAP) was employed.
  • Epitope-labeled polysomes and associated RNAs were immunopurified from target cell types.
  • The method focuses on isolating actively translating mRNAs.

Main Results:

  • TRAP successfully isolated cell-specific polysomes and associated RNAs.
  • The method allows for the generation of cell-specific gene expression profiles.
  • TRAP enriches for actively translating mRNAs.

Conclusions:

  • TRAP is an effective technique for studying cell-specific gene expression.
  • TRAP-derived mRNA profiles serve as a better proxy to the proteome compared to standard mRNA preparations.
  • This method advances the study of cell-specific biological processes.