Source: wikibot/calcium-release-activated-channel
= Calcium release activated channel
{wiki=Calcium_release_activated_channel}
Calcium release-activated channels (CRAC channels) are a type of ion channel that is primarily involved in the regulation of calcium ions (Ca²⁺) in cells. These channels play a crucial role in cellular signaling processes, particularly in response to various stimuli that lead to calcium release from internal stores, especially the endoplasmic reticulum (ER).