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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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Unlike eukaryotes, bacteria use a single RNA Polymerase (RNAP) to transcribe all genes. The different subunits of bacterial RNAPhave distinct functions. The multisubunit structure of the bacterial RNAP helps the enzyme to maintain catalytic function, facilitate assembly, interact with DNA and RNA, and self-regulate its activity.
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Single Molecule Fluorescence Energy Transfer Study of Ribosome Protein Synthesis
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Protein Assistants of Small Ribosomal Subunit Biogenesis in Bacteria.

Elena Maksimova1, Olesya Kravchenko1, Alexey Korepanov1

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

Microorganisms
|April 23, 2022
PubMed
Summary
This summary is machine-generated.

Ribosome biogenesis is crucial for cell function. This review details assembly factors like RbfA and YjeQ (RsgA) involved in 30S ribosomal subunit decoding-center folding.

Keywords:
17S rRNA folding30S subunit maturationEraHfqKsgA (RsmA)RbfARimJRimMRimPYjeQ (RsgA)assembly factorscryo-EM (cryo-electron microscopy)ribosome biogenesis

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Area of Science:

  • Molecular Biology
  • Structural Biology
  • Biochemistry

Background:

  • Ribosome biogenesis is a complex, multistage process essential for protein synthesis.
  • Assembly factors, including GTPases and RNA helicases, facilitate rRNA and protein folding and modification.
  • Defects in ribosome assembly lead to growth defects and reduced translational efficiency.

Purpose of the Study:

  • To review the structural and biochemical roles of specific 30S ribosomal subunit assembly factors.
  • To highlight factors involved in the critical decoding-center folding step.

Main Methods:

  • Structural analysis of ribosome assembly factors.
  • Biochemical characterization of factor functions.
  • Review of existing literature on ribosome biogenesis.

Main Results:

  • Identified key assembly factors: RbfA, YjeQ (RsgA), Era, KsgA (RsmA), RimJ, RimM, RimP, and Hfq.
  • These factors are crucial for proper folding and interaction within the 30S ribosomal subunit's decoding center.

Conclusions:

  • The studied factors play essential roles in ensuring the fidelity and efficiency of ribosome assembly.
  • Understanding these factors provides insights into fundamental cellular processes and potential therapeutic targets.