Related Experiment Video
Updated: May 19, 2026
09:13
Quantitative Immunofluorescence to Measure Global Localized Translation
Published on: August 22, 2017
Spatial regulation of translation through RNA localization.
F1000 Biology Reports
|August 23, 2012
Summary
RNA localization spatially regulates gene expression by directing messenger RNAs (mRNAs) to specific cellular locations. This review summarizes RNA localization pathways across diverse eukaryotic organisms.
Area of Science:
- Molecular Biology
- Cell Biology
- Genetics
Background:
- Gene expression regulation is crucial for cellular function.
- Post-transcriptional regulation, including RNA localization, offers precise control over protein synthesis.
- Spatial control of protein synthesis is essential in eukaryotic cells.
Purpose of the Study:
- To provide a comprehensive summary of RNA localization mechanisms.
- To highlight conserved and divergent pathways of mRNA transport in eukaryotes.
- To review RNA localization in model organisms and mammalian systems.
Main Methods:
- Literature review of existing research on RNA localization.
- Comparative analysis of RNA localization pathways across species.
- Synthesis of data from Saccharomyces cerevisiae, Xenopus, Drosophila, and mammalian neurons.
Main Results:
- RNA localization is a conserved mechanism across eukaryotes.
- Distinct pathways exist for mRNA targeting in different organisms.
- Specific examples of localized mRNAs and their functions are discussed.
Conclusions:
- RNA localization is a fundamental mechanism for spatial gene expression control.
- Understanding these pathways is key to deciphering cellular organization and function.
- Further research can elucidate the full scope of RNA localization in development and disease.
Related Concept Videos
02:22Regulated mRNA Transport
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 specific...
02:22Regulated mRNA Transport
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 specific...
01:29Translational Regulation
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,...
01:23Regulation of Expression at Multiple Steps
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 addition of a...
02:24Regulation of Expression Occurs at Multiple Steps
Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
02:24Ribosome Profiling
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 helps...
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 helps...