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Ribosomes

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...

Ribosomes

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 AssemblyRibosomes 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 the...

Ribosomes

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...

Ribosomes

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 AssemblyRibosomes 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 the...

Ribosomal RNA Synthesis

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 Synthesis

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,...

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Related Experiment Video

Updated: Jun 23, 2026

Single Molecule Fluorescence Energy Transfer Study of Ribosome Protein Synthesis

Single Molecule Fluorescence Energy Transfer Study of Ribosome Protein Synthesis

Published on: July 6, 2021

Deconstructing ribosome construction.

Keith Connolly¹, Gloria Culver

¹Departments of Biology and of Biochemistry and Biophysics, University of Rochester, Rochester, NY 14627, USA.

Trends in Biochemical Sciences

|April 21, 2009

Summary

This summary is machine-generated.

Ribosome biogenesis, crucial for all cells, is better understood in vitro than in vivo. Ongoing research uncovers new factors and processes involved in in vivo ribosome subunit maturation.

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Last Updated: Jun 23, 2026

Single Molecule Fluorescence Energy Transfer Study of Ribosome Protein Synthesis

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Published on: February 25, 2011

Area of Science:

Molecular Biology
Cell Biology
Biochemistry

Background:

Ribosome biogenesis is a fundamental cellular process essential for protein synthesis in all living organisms.
While in vitro ribosome assembly is well-studied using advanced techniques like X-ray crystallography, in vivo ribosome biogenesis remains less understood.
Understanding in vivo ribosome biogenesis is critical for comprehending cellular function and dysfunction.

Purpose of the Study:

To investigate the cellular processes and extraribosomal factors involved in in vivo ribosome biogenesis.
To elucidate the roles of specific ribosome biogenesis factors in the maturation of ribosomal subunits.
To advance the comprehensive understanding of ribosome assembly within a living cell.

Main Methods:

Utilizing advanced molecular and cellular biology techniques to study ribosome assembly in vivo.
Employing genetic and biochemical approaches to identify and characterize extraribosomal factors.
Analyzing the maturation pathways of ribosomal subunits through the lens of biogenesis factors.

Main Results:

Identification of numerous extraribosomal factors, including modification enzymes, remodeling enzymes, and GTPases, that participate in ribosome biogenesis.
Elaboration of specific roles for these factors in the maturation of ribosomal subunits.
Gaining insights into the complex interplay of factors governing in vivo ribosome assembly.

Conclusions:

Significant progress has been made in understanding the in vivo ribosome biogenesis pathway.
The study highlights the complexity of ribosome assembly, involving numerous extraribosomal factors.
Further research will continue to refine our knowledge of this fundamental cellular process.