How insulin helps muscles take in energy
ERK1/2 Mediates Insulin Stimulation of Na,K-ATPase by Phosphorylation of the α-Subunit in Human Skeletal Muscle Cells*
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
ERK1/2, not just PI3K, plays a central role in insulin’s regulation of ion pumps
Most people think insulin acts mainly through the PI3K pathway for metabolic effects. This study shows ERK1/2 is critical for pump regulation — a non-classical route.
Practical Takeaways
Understanding how insulin enhances muscle ion pump activity may inform strategies to support muscle function in insulin-resistant states like type 2 diabetes.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
ERK1/2, not just PI3K, plays a central role in insulin’s regulation of ion pumps
Most people think insulin acts mainly through the PI3K pathway for metabolic effects. This study shows ERK1/2 is critical for pump regulation — a non-classical route.
Practical Takeaways
Understanding how insulin enhances muscle ion pump activity may inform strategies to support muscle function in insulin-resistant states like type 2 diabetes.
Publication
Journal
Journal of Biological Chemistry
Year
2004
Authors
L. Al‐Khalili, O. Kotova, H. Tsuchida, I. Ehrén, E. Feraille, A. Krook, A. Chibalin
Related Content
Claims (5)
When insulin is present, it tells muscle cells to pump more sodium and potassium around, which creates a better environment for the cell to pull in more creatine — a compound that helps muscles store energy.
Insulin helps muscles pull in more creatine by boosting a cellular pump that creates the right conditions for creatine to get inside.
Insulin helps move certain proteins to the surface of human muscle cells and boosts their activity, and this seems to involve a specific cellular signaling process.
When a certain protein in human muscle cells is blocked, insulin can't turn on or move a key cellular pump that helps muscles work properly.
When insulin acts on human muscle cells, it turns on a switch (ERK1/2) that helps modify a specific protein (the sodium-potassium pump) at certain spots—this has been seen in lab tests using drugs and purified enzymes.