Voltage-sensitive Ca2+ channels area large family of related heterooligomer
s that couple cell excitability to intracellular signalling. Recent studies
on mice carrying Ca2+ channel mutations, or in which Ca2+ channel subunits
have been deleted, have provided important information about the roles car
ried out by these molecules in cardiovascular function, pain, epilepsy, mig
raine and deafness, in addition to further defining how Ca2+ channels regul
ate the physiology of excitable cells.