{Reference Type}: Journal Article {Title}: Toward a consensus on the operation of receptor-induced calcium entry signals. {Author}: Gill DL;Patterson RL; {Journal}: Sci STKE {Volume}: 2004 {Issue}: 243 {Year}: Jul 2004 20 暂无{DOI}: 10.1126/stke.2432004pe39 {Abstract}: Receptor-induced Ca2+ signals involve both Ca2+ release from intracellular stores and extracellular Ca2+ entry across the plasma membrane. The channels mediating Ca2+ entry and the mechanisms controlling their function remain largely a mystery. Here we critically assess current views on the Ca2+ entry process and consider certain modifications to the widely held hypothesis that Ca2+ store emptying is the fundamental trigger for receptor-induced Ca2+ entry channels. Under physiological conditions, receptor-induced store depletion may be quite limited. A number of distinct channel activities appear to mediate receptor-induced Ca2+ entry, and their activation is observed to occur through quite diverse coupling processes.