Abstract
T-type Ca2+ channels play many important physiological functions in different tissues; this makes the channels targets for extracellular and intracellular regulation. T-type Ca2+ channels in many non-excitable cells provide an essential mechanism for Ca2+ entry at voltages near the resting membrane potential, which revises the homeostasis of the intracellular Ca2+ concentration to promote cell cycling and cell duplication. Consistent with this function, many of the extracellular signals stimulate the expression of T-type Ca2+ channels. The intracellular signaling pathways regulating the T-type Ca2+ channels are frequently observed in excitable cells. In these cases, the role of T-type Ca2+ current is to modify threshold and the shape of repetitive firing of action potentials. Therefore, intracellular signaling pathways can either up- or downregulate T-type Ca2+ channels. The regulation of the α1H isoform of the T-type Ca2+ channels is frequently located on the intracellular loop between domains II and III.
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Li, M., Wu, S. (2015). Regulation of T-Type Ca2+ Channels by Intercellular and Intracellular Signals. In: Schaffer, S., Li, M. (eds) T-type Calcium Channels in Basic and Clinical Science. Springer, Vienna. https://doi.org/10.1007/978-3-7091-1413-1_2
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