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Related Concept Videos

cAMP-dependent Protein Kinase Pathways01:25

cAMP-dependent Protein Kinase Pathways

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Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...
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Regulation of Metabolism01:19

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Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
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Introduction to Metabolism01:30

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Metabolism encompasses all biochemical reactions in a living organism, facilitating both the breakdown and synthesis of biomolecules. These metabolic processes are categorized into catabolic and anabolic pathways, which operate in a coordinated manner to ensure energy balance and cellular function.Catabolic Pathways and Energy ReleaseCatabolic pathways involve the breakdown of complex macromolecules such as carbohydrates, lipids, and proteins into smaller structures like monosaccharides, fatty...
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Global Regulatory Systems01:28

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Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...
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The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a...
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Glucose Homeostasis: Regulation of Blood Glucose01:02

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Carbohydrates consumed through foods are converted into glucose, a crucial energy source for the body. In the prandial state, high blood glucose levels stimulate the secretion of insulin from the pancreas. Insulin inhibits hepatic glucose production and stimulates glucose uptake and metabolism by muscle and adipose tissue. The excess glucose is converted into glycogen and stored in the liver and muscles.
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Related Experiment Video

Updated: Dec 13, 2025

Isolation of Primary Mouse Hepatocytes for Nascent Protein Synthesis Analysis by Non-radioactive L-azidohomoalanine Labeling Method
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AMPK: keeping the (power)house in order?

Claire Thornton1

  • 1Perinatal Brain Injury Group, Centre for the Developing Brain, Division of Imaging Sciences and Biomedical Engineering, King's College London, St. Thomas' Hospital, London SE1 7EH, U.K.

Neuronal Signaling
|July 28, 2020
PubMed
Summary

Neurons rely on mitochondria for energy. AMP-activated protein kinase (AMPK) may regulate mitochondrial fission, impacting neuronal function and health.

Area of Science:

  • Neuroscience
  • Cellular Biology
  • Metabolism

Background:

  • Neurons are highly energetic cells requiring constant ATP supply from mitochondria.
  • Mitochondria in neurons have specialized roles including ATP production, calcium buffering, and transport.
  • Mitochondrial dynamics are crucial for neuronal health and function.

Purpose of the Study:

  • To explore the role of AMP-activated protein kinase (AMPK) in regulating mitochondrial dynamics in neurons.
  • To understand how AMPK influences mitochondrial fission, biogenesis, and mitophagy in the context of neuronal energy metabolism.

Main Methods:

  • Review of recent studies implicating AMPK in mitochondrial regulation.
  • Analysis of cellular energy-sensing mechanisms.
  • Investigation of mitochondrial dynamics (fission, fusion, biogenesis, mitophagy).
Keywords:
AMP-activated protein kinasefissionmitochondriamitophagyneuron

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Main Results:

  • AMPK, a key energy sensor, is implicated in triggering mitochondrial fission.
  • This regulation by AMPK may balance mitochondrial dynamics, including biogenesis and mitophagy.
  • These processes are vital for maintaining neuronal energy homeostasis.

Conclusions:

  • AMPK plays a significant role in regulating mitochondrial fission in neurons.
  • Proper regulation of mitochondrial dynamics by AMPK is essential for neuronal function and survival.
  • Further research into AMPK's role can offer insights into neurodegenerative diseases.