Calcium channels are membrane proteins that allow for the selective passage of calcium ions into and out of cells. These channels play a crucial role in numerous cellular processes, including muscle contraction, hormone secretion, and neurotransmitter release. Dysregulation of calcium channels has been implicated in various diseases, such as cardiovascular disorders, neurodegenerative diseases, and certain types of cancer. Researchers are studying calcium channels to better understand their structure, function, and regulation, with the ultimate goal of developing novel therapeutic interventions for these diseases.