voltage-gated calcium channel L-type Ca2+ channel IMR:0000749 L for long-lasting. Wide distribution, well characterized in heart, smooth and skeltal muscle and some neurones. Highly sensitive to the dihydropyridines, phenylalkylamines and the benzothiazepines. Consists of five subunits, known as alpha1, alpha2, beta, gamma and delta. The delta subunit is linked by disulphide bonds to the alpha2 subunit. molecule_role voltage-dependent L-type calcium channel voltage-gated L-type calcium channel