CACNB2

Voltage-dependent L-type calcium channel subunit beta-2 is a protein that in humans is encoded by the CACNB2 gene.[5][6][7]

CACNB2
Identifiers
Aliases	CACNB2, CACNLB2, CAVB2, MYSB, calcium voltage-gated channel auxiliary subunit beta 2, CAB2
External IDs	OMIM: 600003 MGI: 894644 HomoloGene: 75191 GeneCards: CACNB2
Gene location (Human) Chr. Chromosome 10 (human)[1] Band 10p12.33-p12.31 Start 18,140,677 bp[1] End 18,543,557 bp[1]
Gene location (Mouse) Chr. Chromosome 2 (mouse)[2] Band 2 A2|2 10.7 cM Start 14,603,088 bp[2] End 14,987,908 bp[2]
RNA expression pattern More reference expression data
Gene ontology Molecular function • calcium channel activity • voltage-gated ion channel activity • high voltage-gated calcium channel activity • GO:0001948 protein binding • voltage-gated calcium channel activity involved in AV node cell action potential • voltage-gated calcium channel activity • voltage-gated calcium channel activity involved in cardiac muscle cell action potential • actin filament binding • voltage-gated calcium channel activity involved in positive regulation of presynaptic cytosolic calcium levels Cellular component • L-type voltage-gated calcium channel complex • membrane • cell membrane • integral component of plasma membrane • sarcolemma • voltage-gated calcium channel complex • photoreceptor ribbon synapse • presynapse Biological process • regulation of voltage-gated calcium channel activity • calcium ion import • regulation of ion transmembrane transport • ion transport • neuromuscular junction development • calcium ion transmembrane transport • calcium ion transport • visual perception • positive regulation of calcium ion transport • chemical synaptic transmission • positive regulation of high voltage-gated calcium channel activity • regulation of heart rate by cardiac conduction • membrane depolarization during atrial cardiac muscle cell action potential • membrane depolarization during AV node cell action potential • positive regulation of calcium ion transmembrane transport via high voltage-gated calcium channel • protein localization to plasma membrane • positive regulation of presynaptic cytosolic calcium concentration • induction of synaptic vesicle exocytosis by positive regulation of presynaptic cytosolic calcium ion concentration • cardiac conduction Sources:Amigo / QuickGO
Orthologs
Species	Human	Mouse
Entrez	783	12296
Ensembl	ENSG00000165995	ENSMUSG00000057914
UniProt	Q08289	Q8CC27
RefSeq (mRNA)	NM_000724 NM_001167945 NM_201570 NM_201571 NM_201572 NM_201590 NM_201593 NM_201596 NM_201597 NM_001330060	NM_001252533 NM_023116 NM_001309519
RefSeq (protein)	NP_000715 NP_001161417 NP_001316989 NP_963864 NP_963865 NP_963866 NP_963884 NP_963887 NP_963890 NP_963891	NP_001239462 NP_001296448 NP_075605
Location (UCSC)	Chr 10: 18.14 – 18.54 Mb	Chr 2: 14.6 – 14.99 Mb
PubMed search	[3]	[4]
Wikidata
View/Edit Human View/Edit Mouse

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.[8]

See also

• Voltage-dependent calcium channel

References

1. GRCh38: Ensembl release 89: ENSG00000165995 - Ensembl, May 2017
2. GRCm38: Ensembl release 89: ENSMUSG00000057914 - Ensembl, May 2017
3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
5. 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.
6. 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.
7. "Entrez Gene: CACNB2 calcium channel, voltage-dependent, beta 2 subunit".
8. "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.

Further reading

• Williams ME, Feldman DH, McCue AF, et al. (1992). "Structure and functional expression of alpha 1, alpha 2, and beta subunits of a novel human neuronal calcium channel subtype". Neuron. 8 (1): 71–84. doi:10.1016/0896-6273(92)90109-Q. PMID 1309651.
• Brust PF, Simerson S, McCue AF, et al. (1994). "Human neuronal voltage-dependent calcium channels: studies on subunit structure and role in channel assembly". Neuropharmacology. 32 (11): 1089–102. doi:10.1016/0028-3908(93)90004-M. PMID 8107964.
• Hillier LD, Lennon G, Becker M, et al. (1997). "Generation and analysis of 280,000 human expressed sequence tags". Genome Res. 6 (9): 807–28. doi:10.1101/gr.6.9.807. PMID 8889549.
• Volsen SG, Day NC, McCormack AL, et al. (1997). "The expression of voltage-dependent calcium channel beta subunits in human cerebellum". Neuroscience. 80 (1): 161–74. doi:10.1016/S0306-4522(97)00115-2. PMID 9252229.
• Robertson HM, Zumpano KL (1998). "Molecular evolution of an ancient mariner transposon, Hsmar1, in the human genome". Gene. 205 (1–2): 203–17. doi:10.1016/S0378-1119(97)00472-1. PMID 9461395.
• Allen TJ, Mikala G (1998). "Effects of temperature on human L-type cardiac Ca2+ channels expressed in Xenopus oocytes". Pflügers Arch. 436 (2): 238–47. doi:10.1007/s004240050628. PMID 9594024.
• Day NC, Volsen SG, McCormack AL, et al. (1998). "The expression of voltage-dependent calcium channel beta subunits in human hippocampus". Brain Res. Mol. Brain Res. 60 (2): 259–69. doi:10.1016/S0169-328X(98)00186-7. PMID 9757060.
• Brice NL, Dolphin AC (1999). "Differential plasma membrane targeting of voltage-dependent calcium channel subunits expressed in a polarized epithelial cell line". J. Physiol. 515 (3): 685–94. doi:10.1111/j.1469-7793.1999.685ab.x. PMC 2269176. PMID 10066897.
• Gerhardstein BL, Puri TS, Chien AJ, Hosey MM (1999). "Identification of the sites phosphorylated by cyclic AMP-dependent protein kinase on the beta 2 subunit of L-type voltage-dependent calcium channels". Biochemistry. 38 (32): 10361–70. doi:10.1021/bi990896o. PMID 10441130.
• Lie AA, Blümcke I, Volsen SG, et al. (1999). "Distribution of voltage-dependent calcium channel beta subunits in the hippocampus of patients with temporal lobe epilepsy". Neuroscience. 93 (2): 449–56. doi:10.1016/S0306-4522(99)00162-1. PMID 10465427.
• Bünemann M, Gerhardstein BL, Gao T, Hosey MM (1999). "Functional regulation of L-type calcium channels via protein kinase A-mediated phosphorylation of the beta(2) subunit". J. Biol. Chem. 274 (48): 33851–4. doi:10.1074/jbc.274.48.33851. PMID 10567342.
• Yamaguchi H, Okuda M, Mikala G, et al. (2000). "Cloning of the beta(2a) subunit of the voltage-dependent calcium channel from human heart: cooperative effect of alpha(2)/delta and beta(2a) on the membrane expression of the alpha(1C) subunit". Biochem. Biophys. Res. Commun. 267 (1): 156–63. doi:10.1006/bbrc.1999.1926. PMID 10623591.
• Colecraft HM, Alseikhan B, Takahashi SX, et al. (2002). "Novel functional properties of Ca2+ channel β subunits revealed by their expression in adult rat heart cells". J. Physiol. 541 (Pt 2): 435–52. doi:10.1113/jphysiol.2002.018515. PMC 2290333. PMID 12042350.
• Takahashi SX, Mittman S, Colecraft HM (2004). "Distinctive Modulatory Effects of Five Human Auxiliary β2 Subunit Splice Variants on L-Type Calcium Channel Gating". Biophys. J. 84 (5): 3007–21. doi:10.1016/S0006-3495(03)70027-7. PMC 1302863. PMID 12719232.
• Finlin BS, Crump SM, Satin J, Andres DA (2004). "Regulation of voltage-gated calcium channel activity by the Rem and Rad GTPases". Proc. Natl. Acad. Sci. U.S.A. 100 (24): 14469–74. doi:10.1073/pnas.2437756100. PMC 283615. PMID 14623965.
• Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
• Foell JD, Balijepalli RC, Delisle BP, et al. (2004). "Molecular heterogeneity of calcium channel beta-subunits in canine and human heart: evidence for differential subcellular localization". Physiol. Genomics. 17 (2): 183–200. doi:10.1152/physiolgenomics.00207.2003. PMID 14762176.
• Harry JB, Kobrinsky E, Abernethy DR, Soldatov NM (2004). "New short splice variants of the human cardiac Cavbeta2 subunit: redefining the major functional motifs implemented in modulation of the Cav1.2 channel". J. Biol. Chem. 279 (45): 46367–72. doi:10.1074/jbc.M409523200. PMID 15339916.

External links

• GeneReviews/NIH/NCBI/UW entry on Brugada syndrome
• CACNB2+protein,+human at the US National Library of Medicine Medical Subject Headings (MeSH)
• Human CACNB2 genome location and CACNB2 gene details page in the UCSC Genome Browser.