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Related Concept Videos

Types of RNA01:20

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Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
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Types of RNA01:23

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Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
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Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...
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Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying...
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lncRNA - Long Non-coding RNAs02:39

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In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
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Chromatin Isolation by RNA Purification ChIRP
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Activating the Chromatin by Noncoding RNAs.

Nihay Laham-Karam1, Pia Laitinen1, Tiia A Turunen1

  • 11 A.I. Virtanen Institute, University of Eastern Finland , Kuopio, Finland .

Antioxidants & Redox Signaling
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Summary
This summary is machine-generated.

Noncoding RNAs (ncRNAs) are crucial regulators of gene activation, influencing transcription through various mechanisms. Further research into their precise roles and interactions is vital for therapeutic applications.

Keywords:
chromatinlncRNAmiRNAnoncoding RNApiRNAsiRNAtranscriptional activation

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Area of Science:

  • Molecular Biology
  • Genetics
  • Epigenetics

Background:

  • Recent discoveries reveal a vast landscape of noncoding RNAs (ncRNAs).
  • ncRNAs play significant regulatory roles in gene expression, including gene activation.
  • These molecules are involved in both transcriptional and posttranscriptional regulation.

Purpose of the Study:

  • To highlight the emerging role of various ncRNAs in gene activation.
  • To discuss the association of ncRNAs with epigenetic modifications and transcription factors.
  • To underscore the potential of ncRNAs in transcriptional regulation and therapeutic development.

Main Methods:

  • Literature review of recent advances in ncRNA research.
  • Analysis of studies implicating different ncRNA types in gene activation.
  • Examination of ncRNA interactions with chromatin and transcriptional machinery.

Main Results:

  • Multiple ncRNA types, including enhancer RNA (eRNA), small RNA (sRNA), long-noncoding RNA (lncRNA), microRNA (miRNA), and PIWI-associated RNA (piRNA), are implicated in gene activation.
  • ncRNAs often correlate with histone modifications indicative of open chromatin.
  • ncRNAs can recruit key transcriptional factors like RNA polymerase II and modulate chromatin structure.

Conclusions:

  • ncRNAs are key players in gene activation, acting through diverse mechanisms.
  • While the field is advancing, detailed mechanisms of action for specific ncRNAs require further elucidation.
  • Understanding these pathways offers potential for novel research and therapeutic strategies.