Summary
Energy sensors AMPK and mTOR balance catabolism and growth according to nutrient availability.
In depth
AMPK is activated by high AMP/ATP, stimulating catabolism and inhibiting anabolism; metformin and exercise activate it. mTORC1 senses amino acids and growth factors to promote protein synthesis; rapamycin inhibits it and extends lifespan in animals.
AMPK is the energy gauge; mTOR is the nutrient sensor. Their balance determines growth versus conservation. Dysregulation is linked to cancer and diabetes.
Example: metformin activates AMPK.
Frequently asked questions
What is AMPK and mTOR Signalling?
Energy sensors AMPK and mTOR balance catabolism and growth according to nutrient availability.
Which area of biology covers AMPK and mTOR Signalling, and how advanced is it?
AMPK and mTOR Signalling is one of the 53 topics in Metabolism & Bioenergetics. It is rated Advanced, so it suits learners who want specialist depth. Related topics in this area include Gluconeogenesis, Metabolism, Anabolism and Catabolism.
Can you give an example of AMPK and mTOR Signalling?
Fasting increases AMPK activity.
What should I learn before AMPK and mTOR Signalling?
Work through the Beginner topics in Metabolism & Bioenergetics first, such as Metabolism, Anabolism and Catabolism, ATP, then return to AMPK and mTOR Signalling. Advanced topics assume the Intermediate vocabulary.
What topics are related to AMPK and mTOR Signalling?
The closest topics to AMPK and mTOR Signalling are Gluconeogenesis, Metabolism, Anabolism and Catabolism, Ketone Body Metabolism. Comparing them side by side is a good way to see how the ideas connect.
How can I check that I understand AMPK and mTOR Signalling?
Read the summary and the in-depth section, then use the quick check on the interactive lesson for AMPK and mTOR Signalling. To practise the whole of Metabolism & Bioenergetics, use the Metabolism & Bioenergetics quiz.
How is AMPK and mTOR Signalling different from Gluconeogenesis?
AMPK and mTOR Signalling: Energy sensors AMPK and mTOR balance catabolism and growth according to nutrient availability. Gluconeogenesis: Synthesis of glucose from non-carbohydrate precursors such as lactate and amino acids, mainly in the liver. Read both side by side and note what each one explains.
How should I study AMPK and mTOR Signalling step by step?
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Gluconeogenesis and explain the difference aloud. Finally, take the Metabolism & Bioenergetics quiz and come back to this page for any question you miss.