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Related Concept Videos

Bacterial Protein Maturation01:26

Bacterial Protein Maturation

Bacterial protein maturation is a tightly regulated process that ensures newly synthesized polypeptides achieve correct functional conformations. This maturation involves a series of modifications, folding events, and quality control steps, often assisted by specialized chaperone proteins.N-Terminal ModificationsThe maturation of bacterial polypeptides begins cotranslationally as the polypeptide exits the ribosome. The first amino acid, N-formylmethionine (fMet), is typically modified at the...
Improving Translational Accuracy02:07

Improving Translational Accuracy

Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
Ribosomal RNA Synthesis02:53

Ribosomal RNA Synthesis

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.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Ribosomal RNA Synthesis02:53

Ribosomal RNA Synthesis

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.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Ribosomes01:27

Ribosomes

Ribosomes translate genetic information encoded by messenger RNA (mRNA) into proteins. Both prokaryotic and eukaryotic cells have ribosomes. Cells that synthesize large quantities of protein—such as secretory cells in the human pancreas—can contain millions of ribosomes.
Ribosome Structure and Assembly
Ribosomes are composed of ribosomal RNA (rRNA) and proteins. In eukaryotes, rRNA is transcribed from genes in the nucleolus—a part of the nucleus that specializes in ribosome production. Within...
Ribosomes01:27

Ribosomes

Ribosomes translate genetic information encoded by messenger RNA (mRNA) into proteins. Both prokaryotic and eukaryotic cells have ribosomes. Cells that synthesize large quantities of protein—such as secretory cells in the human pancreas—can contain millions of ribosomes.
Ribosome Structure and Assembly
Ribosomes are composed of ribosomal RNA (rRNA) and proteins. In eukaryotes, rRNA is transcribed from genes in the nucleolus—a part of the nucleus that specializes in ribosome production. Within...

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Related Experiment Video

Updated: May 14, 2026

Global Identification of Co-Translational Interaction Networks by Selective Ribosome Profiling
06:58

Global Identification of Co-Translational Interaction Networks by Selective Ribosome Profiling

Published on: October 7, 2021

Quality control mechanisms during ribosome maturation.

Katrin Karbstein1

  • 1Department of Cancer Biology, The Scripps Research Institute, 130 Scripps Way #2C2, Jupiter, FL 33458, USA. kkarbst@scripps.edu

Trends in Cell Biology
|February 5, 2013
PubMed
Summary

Ribosome quality control ensures accurate protein synthesis and cellular health. This review details mechanisms that survey nascent ribosomes for functionality, preventing errors and disease.

Area of Science:

  • Molecular Biology
  • Cellular Biology
  • Genetics

Background:

  • Protein synthesis relies on accurate ribosome function.
  • Ribosome integrity is crucial for faithful genetic information transfer.
  • Defects in ribosome assembly or function are linked to disease, including cancer.

Purpose of the Study:

  • To review known quality control mechanisms for nascent ribosomes.
  • To highlight the importance of ribosome integrity in cellular function and disease prevention.

Main Methods:

  • Literature review of studies on ribosome biogenesis and quality control.
  • Analysis of mechanisms involving inter-site communication on ribosomes.
  • Examination of the consequences of ribosome dysfunction.

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Genome-wide Quantification of Translation in Budding Yeast by Ribosome Profiling
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Genome-wide Quantification of Translation in Budding Yeast by Ribosome Profiling

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Eukaryotic Polyribosome Profile Analysis

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Related Experiment Videos

Last Updated: May 14, 2026

Global Identification of Co-Translational Interaction Networks by Selective Ribosome Profiling
06:58

Global Identification of Co-Translational Interaction Networks by Selective Ribosome Profiling

Published on: October 7, 2021

Genome-wide Quantification of Translation in Budding Yeast by Ribosome Profiling
12:57

Genome-wide Quantification of Translation in Budding Yeast by Ribosome Profiling

Published on: December 21, 2017

Eukaryotic Polyribosome Profile Analysis
09:16

Eukaryotic Polyribosome Profile Analysis

Published on: June 15, 2010

Main Results:

  • Quality control ensures the faithful transmission of genetic information.
  • Ribosome structure integrity is vital for many quality control mechanisms.
  • Haploinsufficiency of ribosomal proteins can lead to cancer predisposition.
  • Inactive ribosomes are degraded with bound mRNA to prevent errors.

Conclusions:

  • Robust quality control mechanisms survey nascent ribosomes for functionality.
  • These mechanisms are essential for maintaining cellular health and preventing disease.
  • Understanding these processes is key to addressing ribosome-related disorders.