Ribosomal Rna Transcription
Ribosomal Rna Transcription - Related Videos
02:53
Ribosomal RNA Synthesis
0 Views •
2020
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,...
02:53
Ribosomal RNA Synthesis
0 Views •
2023
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,...
06:21
Depletion of Ribosomal RNA for Mosquito Gut Metagenomic RNA-seq
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Cited by 20 •
2013
A ribosomal RNA (rRNA) depletion protocol was developed to enrich messenger RNA (mRNA) for RNA-seq of the mosquito gut metatranscriptome. Sample specific rRNA probes, which were used to remove rRNA via subtraction, were created from the mosquito and its gut microbes. Performance of the protocol can result in the removal of approximately 90-99% of rRNA.
13:16
Assessment of DNA Contamination in RNA Samples Based on Ribosomal DNA
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Cited by 26 •
2018
Here, we present a protocol for tracing genomic DNA (gDNA) contamination in RNA samples. The presented method utilizes primers specific for the internal transcribed spacer region (ITS) of ribosomal DNA (rDNA) genes. The method is suited for reliable and sensitive detection of DNA contamination in most eukaryotes and prokaryotes.
10:24
Next-generation Sequencing of 16S Ribosomal RNA Gene Amplicons
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Cited by 119 •
2014
Characterizing microbial community has been a longstanding goal in environmental microbiology. Next-generation sequencing methods now allow for the characterization of microbial communities at an unprecedented depth with minimal cost and labor. We detail here our approach to sequence bacterial 16S ribosomal RNA genes using a benchtop sequencer.
FAQs
Eukaryotic cells assign different rRNA products to distinct polymerases. RNA polymerase I transcribes most rRNA genes in the nucleolus as a precursor, whereas RNA polymerase III produces 5S rRNA. This division separates major transcriptional outputs while allowing the resulting RNAs to enter a coordinated pathway of processing and ribosome assembly.
The initial RNA polymerase I product is a precursor rather than the final functional RNA. Processing converts that transcript into rRNA components that can be assembled with ribosomal proteins. Consequently, transcription alone does not establish ribosome production; successful maturation and assembly determine whether newly synthesized RNA contributes to functional ribosomes and protein synthesis.
Bacteria commonly organize rRNA genes in operons, placing related transcriptional information within a shared genetic arrangement. Eukaryotic cells instead transcribe most rRNA genes in the nucleolus through RNA polymerase I and produce 5S rRNA with RNA polymerase III. This contrast provides a framework for comparing gene organization and transcriptional coordination across cell types.
A complete analysis should follow more than transcript synthesis. It should consider transcription of the rRNA genes, processing of the precursor where applicable, incorporation of rRNA with ribosomal proteins, and formation of ribosomes. Examining these linked stages helps distinguish a change in RNA production from a change in maturation or assembly.
Ribosomal RNA transcription is coordinated with cellular growth demands, so its activity is linked to the cell’s need for protein-producing capacity. Studying this relationship helps explain how cells adjust ribosome production as growth conditions change. It also connects transcriptional regulation with broader questions about cellular proliferation and control of biosynthetic activity.
Because most eukaryotic rRNA transcription occurs in the nucleolus and connects directly to ribosome assembly, it serves as a useful lens for studying nucleolar function. Its relationship to cellular proliferation also makes it relevant to abnormalities associated with disease. Researchers can therefore examine transcription, processing, and assembly as connected features of altered cell behavior.