Leucine, a dietary amino acid, binds to a specific site on the Cav3.1 ion channel and reduces the voltage needed for the channel to open, which leads to activation of neurons.
Mechanism
Synthesis from 1 study
Leucine from food binds to a specific channel in brain cells that control hunger, making it easier for the channel to open. When it opens, calcium flows in and turns the cell on. These activated cells send signals that stop you from feeling hungry.
Most probable mechanism
When leucine from food enters the brain, it attaches to a specific spot on a calcium channel called Cav3.1 in certain nerve cells. This makes the channel open more easily when the cell is slightly electrically stimulated. Once open, calcium flows into the cell, turning it on. These activated nerve cells send signals that stop hunger and reduce food intake.
Leucine binds to a hydrophobic pocket in the Cav3.1 voltage-gated calcium channel
Binding of leucine reduces the voltage threshold required for Cav3.1 channel opening
Cav3.1 channel opening allows calcium influx into hypothalamic POMC neurons
Calcium influx activates POMC neurons, triggering downstream anorectic signaling
Activated POMC neurons suppress appetite and promote weight loss via central satiety pathways
Evidence from Studies
Supporting (1)
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Cav3.1 is a neuronal leucine sensor that mediates satiety and weight loss in response to dietary protein
Contradicting (0)
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