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Related Concept Videos

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Prokaryote translation is a complex, highly coordinated process that converts genetic information from mRNA into functional proteins. It involves three stages: initiation, elongation, and termination, each facilitated by specific molecular components.Initiation of TranslationThe process begins with the assembly of the ribosomal subunits and initiation factors on the mRNA. In bacteria, the 30S ribosomal subunit recognizes the Shine-Dalgarno sequence in the mRNA, a conserved region upstream of...
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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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RNA localization in prokaryotes: Where, when, how, and why.

Mikel Irastortza-Olaziregi1, Orna Amster-Choder1

  • 1Department of Microbiology and Molecular Genetics, IMRIC, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel.

Wiley Interdisciplinary Reviews. RNA
|August 28, 2020
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Summary

Prokaryotic transcripts like mRNAs and regulatory RNAs can be localized within cells, influencing their function and fate. This RNA localization is crucial for cellular organization and has potential biotechnological applications.

Keywords:
RNA localizationRNA zipcodeslocal translationsubcellular organization of prokaryotestransertion

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Area of Science:

  • Molecular Biology
  • Microbiology
  • Genetics

Background:

  • Prokaryotic transcripts (rRNAs, tRNAs, mRNAs, regulatory RNAs) are now known to exhibit spatiotemporal regulation.
  • RNA localization patterns can be dynamic and specific, targeting regions like the cytoplasm, inner membrane, or cell poles.
  • Localization can be translation-dependent or independent, with the latter involving sequence-specific RNA targeting.

Purpose of the Study:

  • To review the emerging field of RNA localization in prokaryotes.
  • To highlight the mechanisms and functional consequences of transcript localization.
  • To discuss the implications of RNA localization for cellular organization and biotechnology.

Main Methods:

  • Review of existing literature on prokaryotic RNA localization.
  • Analysis of mechanisms for RNA targeting and localization.
  • Discussion of the impact of localization on RNA fate and function.

Main Results:

  • Prokaryotic transcripts exhibit diverse localization patterns, often correlating with protein localization.
  • RNA localization influences transcript degradation, translation efficiency, and regulatory interactions.
  • Localization contributes to the formation of functional cellular compartments and phase separation.

Conclusions:

  • RNA localization is a key driver of subcellular organization in prokaryotes.
  • Understanding RNA localization provides fundamental insights into cellular complexity.
  • This field holds promise for biotechnological and therapeutic advancements.