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Related Concept Videos

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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.
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Regulated mRNA Transport02:22

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In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing...
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Translational Regulation01:29

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Translational regulation in prokaryotes ensures efficient protein synthesis by controlling ribosome access to mRNA. This regulation is mediated by secondary RNA structures, including translational riboswitches, RNA thermometers, and small RNAs (sRNAs), which respond to intracellular and environmental signals to modulate gene expression.Translational RiboswitchesRiboswitches in the leader region of mRNAs can regulate translation by altering the accessibility of the Shine-Dalgarno (SD) sequence,...
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Regulation of Expression at Multiple Steps01:23

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The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
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RNA-seq03:21

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RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
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Leaky Scanning02:28

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During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R...
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Updated: Oct 7, 2025

Production of Xenopus tropicalis Egg Extracts to Identify Microtubule-associated RNAs
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Transcriptome-scale methods for uncovering subcellular RNA localization mechanisms.

J Matthew Taliaferro1

  • 1Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; RNA Bioscience Initiative, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.

Biochimica Et Biophysica Acta. Molecular Cell Research
|January 9, 2022
PubMed
Summary
This summary is machine-generated.

Understanding RNA transport mechanisms is crucial, as thousands of RNAs localize within cells. New high-throughput sequencing methods enable analyzing thousands of transcripts simultaneously to uncover these RNA localization mechanisms.

Keywords:
Cell fractionationMPRAProximity labelingRNA localizationRNA transport

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Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genomics

Background:

  • Thousands of RNAs are localized to specific subcellular locations across various biological systems.
  • The mechanisms governing the transport of the vast majority of these localized RNAs remain largely unknown.
  • Traditional methods for uncovering RNA transport mechanisms are laborious, focusing on single transcripts.

Purpose of the Study:

  • To explore the potential of recent high-throughput sequencing methods for analyzing RNA localization.
  • To identify commonalities among localized transcripts to understand RNA transport mechanisms.
  • To accelerate the discovery of RNA localization mechanisms.

Main Methods:

  • Profiling subcellular transcriptomes using high-throughput sequencing.
  • Analyzing the localization of thousands of transcripts concurrently.
  • Identifying shared features among multiple localized transcripts.

Main Results:

  • Recent high-throughput sequencing methods allow for the simultaneous analysis of thousands of RNA transcripts.
  • These methods facilitate the identification of commonalities among localized RNAs.
  • This approach has the potential to significantly expand the understanding of RNA localization mechanisms.

Conclusions:

  • High-throughput sequencing of subcellular transcriptomes offers a powerful approach to study RNA localization.
  • Identifying commonalities among localized RNAs can rapidly advance our knowledge of their transport mechanisms.
  • This strategy promises to overcome the limitations of traditional single-transcript analyses.