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Related Concept Videos

Types of RNA01:20

Types of RNA

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.
RNA Performs Diverse...
Types of RNA01:23

Types of RNA

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.
RNA...
Translational Regulation01:29

Translational Regulation

Translational regulation in prokaryotes ensures efficient protein synthesis by controlling ribosome access to mRNA. This regulation is mediated by secondary RNA structures, including translational riboswitches, RNA thermometers, and small RNAs (sRNAs), which respond to intracellular and environmental signals to modulate gene expression.Translational RiboswitchesRiboswitches in the leader region of mRNAs can regulate translation by altering the accessibility of the Shine-Dalgarno (SD) sequence,...
Experimental RNAi02:15

Experimental RNAi

RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the addition of a...
RNA Polymerase II Accessory Proteins02:36

RNA Polymerase II Accessory Proteins

Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...

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Designer RNA-binding proteins: New tools for manipulating the transcriptome.

Aleksandra Filipovska1, Oliver Rackham

  • 1Western Australian Institute for Medical Research and Centre for Medical Research, The University of Western Australia, Perth, Australia.

RNA Biology
|September 24, 2011
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Summary
This summary is machine-generated.

Researchers expanded the RNA recognition code for Pumilio and FBF homology (PUF) proteins. This allows designing programmable RNA-binding proteins to study gene expression and develop future therapeutics.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • Post-transcriptional regulation is crucial for cellular processes and development in eukaryotes.
  • Current tools for studying RNA are limited in scope and application.
  • Pumilio and FBF homology (PUF) proteins play significant roles in RNA regulation.

Purpose of the Study:

  • To expand the RNA recognition capabilities of PUF proteins.
  • To enable the design of novel RNA-binding proteins with programmable specificities.
  • To advance the understanding of RNA-mediated gene expression control.

Main Methods:

  • Elucidation of the RNA recognition code for PUF proteins.
  • Protein engineering and design principles for targeted RNA binding.
  • Functional characterization of engineered RNA-binding proteins.

Main Results:

  • Successfully expanded the RNA recognition code of PUF proteins.
  • Demonstrated the ability to design proteins with programmable RNA-binding specificities.
  • Established a foundation for creating custom RNA-binding proteins.

Conclusions:

  • The expanded RNA recognition code facilitates the design of novel RNA-binding proteins.
  • Programmable RNA-binding proteins can be used to elucidate RNA-mediated gene regulation mechanisms.
  • This approach holds potential for developing future RNA-targeted therapeutics.