FEATURES

FAMILY

calcium channel alpha-1 subunit (TC 1.A.1.11) family

DESCRIPTION

Also known as CAC1D_HUMAN, CACNA1D, CACH3, CACN4, CACNL1A2, CCHL1A2. Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1D gives rise to L-type calcium currents. Long-lasting (L-type) calcium channels belong to the 'high-voltage activated' (HVA) group. They are blocked by dihydropyridines (DHP), phenylalkylamines, and by benzothiazepines. Voltage-dependent calcium channels are multisubunit complexes, consisting of alpha-1, alpha-2, beta and delta subunits in a 1:1:1:1 ratio. The channel activity is directed by the pore-forming and voltage-sensitive alpha-1 subunit. In many cases, this subunit is sufficient to generate voltage-sensitive calcium channel activity. The auxiliary subunits beta and alpha-2/delta linked by a disulfide bridge regulate the channel activity. Channel activity is further modulated, depending on the presence of specific delta subunit isoforms. Interacts (via IQ domain) with CABP1 and CABP4 in a calcium independent manner (By similarity). Interacts with RIMBP2 (By similarity).

Also known as CAC1D_HUMAN, CACNA1D, CACH3, CACN4, CACNL1A2, CCHL1A2. Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a va ...

EXTERNAL LINKS

CACNA1D

Voltage-dependent L-type calcium channel subunit alpha-1D

CACNA1D

Molecular Synopsis