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Related Concept Videos

Catenins01:23

Catenins

Catenins are characterized by multiple binding domains and dynamic structures that allow them to function as linker proteins in cell junction complexes. All catenins, except α-catenin, contain a characteristic protein sequence called the armadillo repeat and are therefore also called armadillo proteins.
Catenins in Cell Junctions
Catenins bind to cell adhesion molecules such as cadherins and link them to different cytoskeletal proteins depending on the type of cell junction. At the adherens...
Role of Neurotransmitters in Memory01:23

Role of Neurotransmitters in Memory

Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
 Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is critical for...
Calmodulin-dependent Signaling01:16

Calmodulin-dependent Signaling

Calmodulin (CaM) is a calcium-binding protein in eukaryotes that controls various calcium-regulated cellular processes. It has four calcium-binding sites that bind calcium to form the calcium-calmodulin ( Ca2+-CaM) complex. GPCR stimulation increases the calcium levels in the cells that bind to CaM and induces a conformational change.
The Ca2+-CaM complex does not have enzymatic activity by itself. Instead, the complex binds downstream target proteins, including membrane proteins or enzymes,...
Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the cerebellum's...
Tension Response at Adherens Junctions01:26

Tension Response at Adherens Junctions

The adherens junctions that anchor cells together are multi-protein complexes that dynamically adapt to mechanical stimuli such as tensile forces and shear stress. Mechanosensory proteins in these junctions can sense such mechanical stimuli and undergo a shift in their conformation, resulting in an altered function — a process called mechanotransduction.
α-Catenin as a Mechanosensory Protein
The α-catenin of adherens junctions is an allosteric protein with three VH (vinculin homology) domains...

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Related Experiment Video

Updated: Jun 30, 2026

Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
07:17

Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans

Published on: June 23, 2022

Beta-catenin is required for memory consolidation.

Kimberly A Maguschak1, Kerry J Ressler

  • 1Department of Psychiatry and Behavioral Sciences, Yerkes National Primate Research Center, Howard Hughes Medical Institute, Emory University, Atlanta, Georgia 30329, USA.

Nature Neuroscience
|September 30, 2008
PubMed
Summary

Beta-catenin is crucial for consolidating fear memories in the adult mouse amygdala. Its role in synaptic remodeling supports long-term memory formation.

Area of Science:

  • Neuroscience
  • Molecular Biology
  • Behavioral Science

Background:

  • Beta-catenin is known to be involved in regulating and remodeling neuronal synapses.
  • Its specific role in adult learning and memory, particularly fear memory, requires further investigation.

Purpose of the Study:

  • To examine beta-catenin expression in the adult mouse brain.
  • To elucidate the role of beta-catenin in amygdala-dependent learning and memory, specifically fear memory consolidation.

Main Methods:

  • Measured beta-catenin mRNA and protein phosphorylation during fear memory consolidation in adult mice.
  • Assessed changes in beta-catenin association with cadherin.
  • Utilized pharmacological enhancement with lithium and genetic manipulation (site-specific deletion of Ctnnb1) in the amygdala.

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Quantifying Subcellular Ubiquitin-proteasome Activity in the Rodent Brain
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Quantifying Subcellular Ubiquitin-proteasome Activity in the Rodent Brain

Published on: May 21, 2019

Related Experiment Videos

Last Updated: Jun 30, 2026

Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
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Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans

Published on: June 23, 2022

Reconstitution Of &#946;-catenin Degradation In Xenopus Egg Extract
09:41

Reconstitution Of β-catenin Degradation In Xenopus Egg Extract

Published on: June 17, 2014

Quantifying Subcellular Ubiquitin-proteasome Activity in the Rodent Brain
09:25

Quantifying Subcellular Ubiquitin-proteasome Activity in the Rodent Brain

Published on: May 21, 2019

Main Results:

  • Observed alterations in beta-catenin mRNA and protein phosphorylation during fear memory consolidation, correlating with changes in cadherin association.
  • Lithium treatment enhanced memory consolidation.
  • Amygdala-specific deletion of Ctnnb1 impaired the transfer of fear learning to long-term memory, while acquisition and expression remained normal.

Conclusions:

  • Beta-catenin is essential for the consolidation of fear memory in the adult amygdala, but not for its acquisition or expression.
  • The findings suggest a broader role for beta-catenin in synaptic remodeling and stabilization necessary for long-term memory.