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Related Concept Videos

Transducer Mechanism: Nuclear Receptors01:31

Transducer Mechanism: Nuclear Receptors

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Nuclear receptors, or NRs, are unique transcription factors that regulate gene transcription and affect the cellular pathways involved in reproduction, development, or metabolism. Their ability to be stimulated by small lipophilic ligands and control vital cellular processes makes them ideal drug targets. Nearly 10-15% of currently prescribed drugs target these receptors.
About 48 different soluble family members of nuclear receptors are identified that can be divided into two main classes:
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Regulation of Nuclear Protein Sorting01:45

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Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
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NF-κB-dependent Signaling Pathway02:26

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The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
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Additional Subnuclear Structures02:10

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The eukaryotic nucleus is a double membrane-bound organelle that contains nearly all of the cell’s genetic material in the form of chromosomes. It is rightly called the “brain” of the cell as it shoulders the responsibility of responding to various physiological processes, stress, altered metabolic conditions, and other cellular signals. 
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Role of Neurotransmitters in Memory01:23

Role of Neurotransmitters in Memory

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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
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Co-activators and Co-repressors02:04

Co-activators and Co-repressors

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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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Related Experiment Video

Updated: Dec 23, 2025

Production of Nurr-1 Specific Polyclonal Antibodies Free of Cross-reactivity Against Its Close Homologs, Nor1 and Nur77
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Nuclear receptor binding factor 2 (NRBF2) is required for learning and memory.

Xiaosen Ouyang1, Israr Ahmad1, Michelle S Johnson1

  • 1Department of Pathology and Center for Free Radical Biology, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.

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Nuclear receptor binding factor-2 (NRBF2) deficiency causes significant learning and memory impairments in mice. This study reveals NRBF2

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Area of Science:

  • Neuroscience and Molecular Biology
  • Cognitive function and neurodegenerative disease mechanisms

Background:

  • Alzheimer's disease incidence is rising, highlighting the need to understand cognitive deficit mechanisms.
  • Nuclear receptor binding factor-2 (NRBF2) influences transcriptional and autophagic activities, both crucial for neuronal function.

Purpose of the Study:

  • To investigate the role of NRBF2 in learning and memory.
  • To determine if NRBF2 deficiency leads to cognitive deficits.

Main Methods:

  • Development of a novel mouse model with nervous system-specific knockout of the Nrbf2 gene.
  • Comprehensive behavioral assessments to evaluate learning and memory.
  • Analysis of autophagic flux in primary neurons and brain tissue.
  • RNA sequencing (RNAseq) to identify gene expression changes.

Main Results:

  • NRBF2 knockout in the nervous system resulted in significant learning and memory deficits.
  • Autophagic flux was not notably impaired in primary neurons or brain tissue.
  • RNAseq revealed altered expression of genes critical for neuronal function.

Conclusions:

  • NRBF2 plays a crucial role in regulating learning and memory processes.
  • The cognitive deficits observed are not primarily due to impaired autophagy but rather altered gene expression.
  • NRBF2's involvement suggests new regulatory mechanisms in cognition, involving retinoic acid receptors, protein folding, and quality control.