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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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Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
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[Regulation of Ribosomal Protein Synthesis in Prokaryotes].

A O Mikhaylina1,2, E Y Nikonova1, O S Kostareva1

  • 1Institute of Protein Research, Russian Academy of Sciences, Pushchino, Moscow oblast, 142290 Russia.

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Ribosomal protein synthesis in prokaryotes is tightly regulated. This review explores autoregulation mechanisms like competition, entrapment, and retroregulation, ensuring balanced cellular protein production.

Keywords:
mRNAoperonregulation of genes expressionribosomal proteins

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • Protein synthesis via ribosomes is fundamental to cellular life.
  • Ribosomal protein gene expression is crucial for balancing protein and RNA synthesis during ribosomal biogenesis.
  • Understanding these regulatory processes is key to comprehending cellular function.

Purpose of the Study:

  • To review autoregulation features of ribosomal protein synthesis in prokaryotes.
  • To discuss specific inhibition mechanisms of ribosomal protein synthesis.
  • To provide examples of regulation by individual ribosomal proteins and complexes.

Main Methods:

  • Literature review of prokaryotic ribosomal protein synthesis.
  • Analysis of autoregulation mechanisms including competition, entrapment, and retroregulation.
  • Compilation of examples illustrating regulation by ribosomal proteins and their complexes.

Main Results:

  • Identified and discussed autoregulation mechanisms in prokaryotic ribosomal protein synthesis.
  • Detailed the inhibition of ribosomal protein synthesis encoded by 12 operons.
  • Presented examples of regulation by individual ribosomal proteins and protein complexes.

Conclusions:

  • Autoregulation is a key feature of ribosomal protein synthesis in prokaryotes.
  • Mechanisms like competition, entrapment, and retroregulation ensure efficient and balanced protein production.
  • Individual ribosomal proteins and their complexes play significant roles in this regulatory network.