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Related Concept Videos

Ribosomes01:27

Ribosomes

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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.
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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.
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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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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.
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Specialized staining techniques play a vital role in microbiology by enabling the visualization of specific bacterial structures that remain undetectable with standard microscopy methods. These techniques not only enhance the structural visualization of bacterial cells but also provide critical insights into their pathogenicity and classification. Additionally, they support diagnostic and research endeavors in microbiology by identifying key bacterial features.Capsule Staining for Virulence...
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Sensory receptors play an integral part in comprehending our external and internal environments. They receive diverse stimuli, converting them into the nervous system's electrochemical signals. This conversion occurs as the stimulus alters the sensory neuron's cell membrane potential, instigating the generation of an action potential. This action potential is subsequently transmitted to the central nervous system (CNS), which integrates with other sensory data or higher cognitive...
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Single Molecule Fluorescence Energy Transfer Study of Ribosome Protein Synthesis
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Approaches for Studying Ribosome Specialization.

Edward Emmott1, Marko Jovanovic2, Nikolai Slavov3

  • 1Department of Bioengineering, Northeastern University, Boston, MA, USA; Barnett Institute for Chemical and Biological Analysis, Northeastern University, Boston, MA, USA.

Trends in Biochemical Sciences
|February 23, 2019
PubMed
Summary
This summary is machine-generated.

Specialized ribosomes, differing from textbook models, exhibit diverse compositions for tailored translation. Advanced techniques like liquid chromatography-tandem mass spectrometry (LC-MS/MS) quantify these ribosomal proteins and monitor protein synthesis.

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Area of Science:

  • Molecular Biology
  • Proteomics
  • Genetics

Background:

  • The traditional view of ribosomes as uniform translational machinery is being challenged.
  • Emerging evidence reveals significant diversity in ribosomal composition.
  • This diversity suggests specialized roles in protein synthesis.

Purpose of the Study:

  • To explore the functional implications of ribosomal diversity.
  • To present advanced methodologies for analyzing ribosomal composition and function.
  • To investigate the regulation of protein synthesis by specialized ribosomes.

Main Methods:

  • Liquid chromatography coupled to tandem mass-spectrometry (LC-MS/MS) for quantifying ribosomal proteins.
  • Top-down and bottom-up LC-MS/MS approaches for protein and peptide analysis.
  • Ribosome profiling (Ribo-Seq) and stable isotope labeling with amino acids in cell culture (SILAC) for monitoring protein synthesis and degradation.

Main Results:

  • Unexpected diversity in ribosomal protein composition has been measured.
  • LC-MS/MS provides high specificity, accuracy, and throughput for ribosomal protein quantification.
  • Multiple methods can assess the regulation of protein synthesis by specialized ribosomes.

Conclusions:

  • Ribosomal composition is more diverse than previously thought, enabling specialized translational functions.
  • Advanced mass spectrometry and sequencing techniques are crucial for studying ribosomal heterogeneity.
  • Understanding specialized ribosomes is key to comprehending the regulation of protein synthesis.