![]() ![]() Four alpha subunits from the KCNQ2 gene can form a channel. ![]() ![]() Each channel contains four alpha subunits that form the hole (pore) through which potassium ions move. Potassium channels are made up of several protein components (subunits). The M-current ensures that the neuron is not constantly active, or excitable. These channels transmit a particular type of electrical signal called the M-current, which prevents the neuron from continuing to send signals to other neurons. Channels made with the KCNQ2 protein are active in nerve cells (neurons) in the brain, where they transport potassium ions out of cells. The specific function of a potassium channel depends on its protein components and its location in the body. These channels, which transport positively charged atoms (ions) of potassium into and out of cells, play a key role in a cell's ability to generate and transmit electrical signals. The KCNQ2 gene belongs to a large family of genes that provide instructions for making potassium channels. ![]()
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January 2023
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