CACNB2

Calcium channel, voltage-dependent, beta 2 subunit

PDB rendering based on 1t0h.

Available structures

Ortholog search: PDBe, RCSB

List of PDB id codes
1t0h, 1t0j

Identifiers

Symbols

CACNB2 ; CACNLB2; CAVB2; MYSB

External IDs

OMIM: 600003 MGI: 894644 HomoloGene: 75191 GeneCards: CACNB2 Gene

Gene ontology
Molecular function	• voltage-gated calcium channel activity • calcium channel activity • protein binding • high voltage-gated calcium channel activity
Cellular component	• integral component of plasma membrane • voltage-gated calcium channel complex • sarcolemma
Biological process	• transport • synaptic transmission • axon guidance • neuromuscular junction development • visual perception • regulation of ion transmembrane transport • positive regulation of calcium ion transport • calcium ion import
Sources: Amigo / QuickGO

RNA expression pattern

More reference expression data

Orthologs

Species

Human

Mouse

RefSeq (mRNA)

RefSeq (protein)

Location (UCSC)

Chr 10:
18.43 – 18.83 Mb

Chr 2:
14.6 – 14.99 Mb

PubMed search

Voltage-dependent L-type calcium channel subunit beta-2 is a protein that in humans is encoded by the CACNB2 gene.^[1]^[2]^[3]

Clinical significance

Mutation in the CACNB2 gene are associated with Brugada syndrome, autism, attention deficit-hyperactivity disorder (ADHD), bipolar disorder, major depressive disorder, and schizophrenia.^[4]

References

↑ Taviaux S, Williams ME, Harpold MM, Nargeot J, Lory P (Sep 1997). "Assignment of human genes for beta 2 and beta 4 subunits of voltage-dependent Ca2+ channels to chromosomes 10p12 and 2q22-q23". Hum Genet 100 (2): 151–4. doi:10.1007/PL00008704. PMID 9254841.
↑ Rosenfeld MR, Wong E, Dalmau J, Manley G, Posner JB, Sher E, Furneaux HM (Jun 1993). "Cloning and characterization of a Lambert-Eaton myasthenic syndrome antigen". Ann Neurol 33 (1): 113–20. doi:10.1002/ana.410330126. PMID 8494331.
↑ "Entrez Gene: CACNB2 calcium channel, voltage-dependent, beta 2 subunit".
↑ "Identification of risk loci with shared effects on five major psychiatric disorders: A genome-wide analysis". The Lancet 381 (9875): 1371–9. 2013. doi:10.1016/S0140-6736(12)62129-1. PMC 3714010. PMID 23453885.

External links

GeneReviews/NIH/NCBI/UW entry on Brugada syndrome
CACNB2 protein, human at the US National Library of Medicine Medical Subject Headings (MeSH)

PDB gallery

1t0h: Crystal structure of the Rattus norvegicus voltage gated calcium channel beta subunit isoform 2a

1t0j: Crystal structure of a complex between voltage-gated calcium channel beta2a subunit and a peptide of the alpha1c subunit

Membrane transport protein: ion channels (TC 1A)

Ca²⁺: Calcium channel

Ligand-gated	Inositol trisphosphate receptor 1 2 3 Ryanodine receptor 1 2 3

Voltage-gated	L-type/Ca_vα 1.1 1.2 1.3 1.4 N-type/Ca_vα2.2 P-type/Ca_vα 2.1 Q-type/Ca_vα2.1 R-type/Ca_vα2.3 T-type/Ca_vα 3.1 3.2 3.3 α₂δ-subunits 1 2 β-subunits β1 β2 β3 β4 γ-subunits γ1 γ2 γ3 γ4 Cation channels of sperm 1 2 3 4 Two-pore channel 1 2

Na⁺: Sodium channel

Constitutively active	Epithelial sodium channel α β γ δ

Proton-gated	Amiloride-sensitive cation channel 1 2 3 4

Voltage-gated	Na_vα 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 7A Na_vβ 1 2 3 4

K⁺: Potassium channel

Calcium-activated	BK channel α1 β1 β2 β3 β4 SK channel SK1 SK2 SK3 IK channel IK1 K_Ca 1.1 2.1 2.2 2.3 3.1 4.1 4.2 5.1

Inward-rectifier	K_ATP K_ir 1.1 2.1 2.2 2.3 2.4 2.6 GIRK/K_ir 3.1 3.2 3.3 3.4 K_ir 4.1 4.2 5.1 6.1 6.2 7.1

Tandem pore domain	K2P 1 2 3 4 5 6 7 9 10 12 13 15 16 17 18

Voltage-gated	K_vα1-6 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 2.1 2.2 3.1 3.2 3.3 3.4 4.1 4.2 4.3 5.1 6.1 6.2 6.3 6.4 K_vα7-12 7.1 7.2 7.3 7.4 7.5 8.1 8.2 9.1 9.2 9.3 10.1 10.2 11.1/hERG 11.2 11.3 12.1 12.2 12.3 K_vβ 1 2 3 KCNIP 1 2 3 4 minK/ISK minK/ISK-like MiRP 1 2 3 Shaker gene

Miscellaneous

Cl⁻: Chloride channel	Calcium-activated chloride channels Anoctamin ANO1 Bestrophin 1 2 Chloride Channel Accessory 1 2 3 4 CFTR CLCN 1 2 3 4 5 6 7 KA KB CLIC 1 2 3 4 5 6 L1 CLNS 1A 1B

H⁺: Proton channel	HVCN1

M⁺: CNG cation channel	α 1 2 3 4 β 1 2 3 HCN FC 1 2 3 4

M⁺: TRP cation channel	TRPA (1) TRPC 1 2 3 4 4AP 5 6 7 TRPM 1 2 3 4 5 6 7 8 TRPML 1 2 3 TRPN TRPP 1 2 TRPV 1 2 3 4 5 6

H₂O (+ solutes): Porin	Aquaporin 0 1 2 3 4 5 6 7 8 9 Voltage-dependent anion channel 1 2 3 General bacterial porin family

Cytoplasm: Gap junction	Connexin: A GJA1 GJA3 GJA4 GJA5 GJA8 GJA9 GJA10 B GJB1 GJB2 GJB3 GJB4 GJB5 GJB6 GJB7 C GJC1 GJC2 GJC3 D GJD2 GJD3 GJD4) Innexin

By gating mechanism

Ion channel class	Ligand-gated Light-gated Voltage-gated Stretch-activated

see also disorders

Index of cells

Description	Structure nucleus chromosome genetics Organelles peroxisome cytoskeleton centrosome epithelia cilia mitochondria Membranes proteins cell adhesions Membrane transport ion channels vesicular transport solute carrier ABC transporters ATPase oxidoreduction-driven

Disease	Structural peroxisome cytoskeleton cilia mitochondria nucleus scleroprotein Membrane channelopathy solute carrier ATPase ABC transporters other extracellular ligands cell surface receptors intracellular signalling Vesicular transport Pore-forming toxins

CACNB2

Clinical significance

See also

References

Further reading

External links