cca-1 encodes a calcium channel alpha subunit that is homologous to vertebrate T-type calcium channel alpha 1 subunits; CCA-1 is required for regulation of pharyngeal pumping, specifically for the efficient initiation of action potentials in the pharynx in response to excitatory inputs; a CCA-1::GFP fusion protein is expressed strongly in pharyngeal muscle as well as in many neurons, including particular subsets of neurons in the head, pharynx, ventral nerve cord, and anal ganglia.
Predicted to enable low voltage-gated calcium channel activity. Involved in membrane depolarization; positive regulation of action potential; and regulation of nematode pharyngeal pumping. Predicted to be located in neuron projection. Predicted to be part of voltage-gated sodium channel complex. Expressed in several structures, including alimentary muscle; distal tip cell; pharyngeal neurons; serotonergic neurons; and ventral nerve cord. Human ortholog(s) of this gene implicated in several diseases, including cerebellar ataxia type 42; childhood absence epilepsy; and primary hyperaldosteronism. Is an ortholog of human CACNA1I (calcium voltage-gated channel subunit alpha1 I).
AF368920 contains the experimentally derived cDNA sequence. It differs in several regards from the sequence predicted from analysis of cosmid C54D2 (product 5).
Map position created from combination of previous interpolated map position (based on known location of sequence) and allele information. Therefore this is not a genetic map position based on recombination frequencies or genetic experiments. This was done on advice of the CGC.