Calcium channel CaV3.3 (a1I) is a low-voltage-activated T-type calcium channel. Such T-type channels are expressed throughout the body. In heart, they may be involved in pacemaker current. In neurons, too, these channels may play a secondary pacemaker role. Three genes encoding T-type Ca2+ channels have been cloned and designated as CaV3.1 (a1G), CaV3.2 (a1H) and CaV3.3 (a1I). While CaV3.1 (a 1G) and CaV3.2 (a1H) are widely expressed in various tissues, CaV3.3 (a1I) is primarily expressed in the central nervous system, where high expression was described in thalamic neurons. The Ca2+ current generated by the CaV3.3 channel displays much slower activation and inactivation compared to the currents produced by CaV3.1 and CaV3.2, suggesting it might play a different role in neuronal excitability.
Membrane; multi-pass membrane protein.
SDS-PAGE - Recombinant Human CACNA1I protein (ab160262)
ab160262 on a 12.5% SDS-PAGE stained with Coomassie Blue.
has not yet been referenced specifically in any publications.
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