CACNA1B gene

calcium voltage-gated channel subunit alpha1 B

The information on this page was automatically extracted from online scientific databases.

From NCBI Gene:

The protein encoded by this gene is the pore-forming subunit of an N-type voltage-dependent calcium channel, which controls neurotransmitter release from neurons. The encoded protein forms a complex with alpha-2, beta, and delta subunits to form the high-voltage activated channel. This channel is sensitive to omega-conotoxin-GVIA and omega-agatoxin-IIIA but insensitive to dihydropyridines. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2011]

From UniProt:

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-1B gives rise to N-type calcium currents. N-type calcium channels belong to the 'high-voltage activated' (HVA) group and are specifically blocked by omega-conotoxin-GVIA (AC P01522) (AC P01522) (By similarity). They are however insensitive to dihydropyridines (DHP). Calcium channels containing alpha-1B subunit may play a role in directed migration of immature neurons.

From NCBI Gene:


From UniProt:

Neurodevelopmental disorder with seizures and non-epileptic hyperkinetic movements (NEDNEH): An autosomal recessive, complex and progressive neurologic disorder characterized by severe neurodevelopmental delay and developmental regression, epileptic encephalopathy, postnatal microcephaly, hypotonia, and non-epileptic hyperkinetic movement disorder, including myoclonus dystonia, choreoathetosis, or generalized dyskinesia. Disease onset in infancy or first years of life. [MIM:618497]

Cytogenetic Location: 9q34.3, which is the long (q) arm of chromosome 9 at position 34.3

Molecular Location: base pairs 137,877,782 to 138,124,619 on chromosome 9 (Homo sapiens Updated Annotation Release 109.20200522, GRCh38.p13) (NCBI)

Cytogenetic Location: 9q34.3, which is the long (q) arm of chromosome 9 at position 34.3
  • BIII
  • CACNL1A5
  • Cav2.2
  • DYT23