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Related Concept Videos

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,...
Improving Translational Accuracy02:07

Improving Translational Accuracy

Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
Improving Translational Accuracy02:07

Improving Translational Accuracy

Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
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...
System of Memory01:23

System of Memory

Memory is categorized into three major systems: sensory memory, short-term memory (STM), and long-term memory (LTM). These systems differ in their capacity and the duration for which they can hold information. Sensory memory captures raw sensory input from the environment, holding it for just a few seconds or less. For example, on hearing a brief, loud sound, like a car horn honking, the sound seems to linger in the mind for a moment even after it stops. This is an instance of sensory memory...
RNA Stability01:53

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Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...

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A Flexible Platform for Monitoring Cerebellum-Dependent Sensory Associative Learning
11:32

A Flexible Platform for Monitoring Cerebellum-Dependent Sensory Associative Learning

Published on: January 19, 2022

Less translational control, more memory.

Graham D Pavitt1

  • 1is at the Faculty of Life Sciences , University of Manchester , Manchester , United Kingdom graham.pavitt@manchester.ac.uk.

Elife
|June 7, 2013
PubMed
Summary
This summary is machine-generated.

A novel small molecule enhances memory in rodents by inhibiting the integrated stress response. This discovery offers new avenues for memory enhancement research.

Keywords:
ATF4HumanMouseRateIF2eIF2Bintegrated stress responsememory consolidationunfolded protein response

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Area of Science:

  • Neuroscience
  • Pharmacology

Background:

  • The integrated stress response (ISR) is a cellular pathway that regulates protein synthesis and can impact cognitive functions.
  • Dysregulation of the ISR has been implicated in various neurological conditions, including memory impairment.

Purpose of the Study:

  • To investigate the role of the ISR in memory formation and retrieval.
  • To determine if inhibiting the ISR using a small molecule can enhance memory performance in rodents.

Main Methods:

  • Rats and mice were treated with a novel small molecule designed to block the ISR.
  • Cognitive performance, specifically memory recall and formation, was assessed using established behavioral tests.

Main Results:

  • Treatment with the small molecule significantly improved memory recall in both rats and mice.
  • Inhibition of the ISR led to enhanced long-term memory consolidation.

Conclusions:

  • Blocking the integrated stress response with a small molecule is a viable strategy for enhancing memory.
  • This finding opens potential therapeutic avenues for memory disorders.