Gene: CACNA1B (calcium voltage-gated channel subunit alpha1 B) Homo sapiens
Symbol: CACNA1B
Name: calcium voltage-gated channel subunit alpha1 B
Description: 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]
Type: protein-coding
RefSeq Status: REVIEWED
Also known as: BIII; brain calcium channel III; CACNL1A5; CACNN; calcium channel alpha12.2 subunit; calcium channel, L type, alpha-1 polypeptide; calcium channel, N type; calcium channel, voltage-dependent, alpha 1B subunit, N type; calcium channel, voltage-dependent, L type, alpha 1B subunit; calcium channel, voltage-dependent, N type, alpha 1B subunit; Cav2.2; Cav2.2 voltage-gated Ca2+ channel; DYT23; OTTHUMP00000022714; OTTHUMP00000022715; OTTHUMP00000022716; OTTHUMP00000022718; voltage-dependent N-type calcium channel subunit alpha-1B; voltage-gated calcium channel alpha subunit Cav2.2; voltage-gated calcium channel subunit alpha Cav2.2
Allele / Splice: See ClinVar data
Latest Assembly: GRCh38 - Human Genome Assembly GRCh38
Human AssemblyChrPosition (strand)SourceGenome Browsers
GRCh389137,877,789 - 138,124,624 (+)NCBIGRCh38GRCh38hg38GRCh38
GRCh379140,772,241 - 141,019,076 (+)NCBIGRCh37GRCh37hg19GRCh37
Build 369139,892,062 - 140,136,449 (+)NCBINCBI36hg18NCBI36
Build 349138,048,077 - 138,292,468NCBI
Cytogenetic Map9q34.3NCBI
HuRef9110,240,583 - 110,486,666 (+)NCBIHuRef
CHM1_19140,920,972 - 141,166,813 (+)NCBICHM1_1
JBrowse: View Region in Genome Browser (JBrowse)

Disease Annotations
Gene-Chemical Interaction Annotations
Gene Ontology Annotations
Molecular Pathway Annotations
Phenotype Annotations
References - curated
References - uncurated
RGD Disease Portals


Comparative Map Data
Position Markers
miRNA Target Status


Nucleotide Sequences
Protein Sequences
Clinical Variants

Additional Information

External Database Links
Nomenclature History
More on CACNA1B
Alliance Gene
Ensembl Gene
JBrowse: hg19 hg38
HGNC Report
NCBI Genome Data Viewer

RGD Object Information
RGD ID: 1347795
Created: 2005-03-08
Species: Homo sapiens
Last Modified: 2019-02-19
Status: ACTIVE