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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 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...

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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A role for the ribosome in development.

¹John Innes Centre, Norwich Research Park, Colney, Norwich NR47UH, UK. mary.byrne@bbsrc.ac.uk

Trends in Plant Science

|September 1, 2009

Summary

The ribosome, essential for protein synthesis, plays a regulatory role in plant development. Recent studies highlight its involvement in coordinating cell growth and specialization, with comparisons to animal development revealing unique and shared roles.

Area of Science:

Molecular Biology
Developmental Biology
Genetics

Background:

Multicellular organism development relies on precise regulation of gene expression through various control mechanisms.
The ribosome, the cell's protein synthesis machinery, is increasingly recognized for roles beyond translation.

Purpose of the Study:

To explore the regulatory role of the ribosome in plant development.
To compare ribosomal protein gene content and ribosome's developmental role in plants versus animals.

Main Methods:

Review of recent studies focusing on ribosomal protein genes and ribosome assembly genes in plants.
Comparative analysis of plant and animal ribosomal protein genome content and developmental functions.

Main Results:

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Evidence suggests that the ribosome actively participates in regulating plant development.
Significant divergence in ribosomal protein gene content exists between plants and animals.
Potential functional overlaps in the ribosome's role in development between plants and animals were identified.

Conclusions:

The ribosome is a key regulator in plant development, influencing cell division, growth, and specialization.
Comparative analysis provides insights into the evolution of developmental regulation and the conserved roles of the ribosome.