SCN1B

SCN1B
Identifiers
Aliases	SCN1B, ATFB13, BRGDA5, GEFSP1, sodium voltage-gated channel beta subunit 1, EIEE52, DEE52
External IDs	OMIM: 600235 MGI: 98247 HomoloGene: 810 GeneCards: SCN1B
Gene location (Human) Chr. Chromosome 19 (human) Band 19q13.11 Start 35,030,470 bp End 35,040,449 bp
Gene location (Mouse) Chr. Chromosome 7 (mouse) Band 7 B1|7 19.3 cM Start 30,815,949 bp End 30,826,428 bp
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in gastrocnemius muscle skeletal muscle tissue dorsolateral prefrontal cortex Brodmann area 9 superior frontal gyrus prefrontal cortex putamen caudate nucleus hippocampus proper substantia nigra Top expressed in superior frontal gyrus cerebellar cortex extensor digitorum longus muscle triceps brachii muscle temporal muscle sternocleidomastoid muscle entorhinal cortex digastric muscle lip tibialis anterior muscle More reference expression data BioGPS More reference expression data
Gene ontology Molecular function sodium channel activity voltage-gated ion channel activity voltage-gated sodium channel activity involved in Purkinje myocyte action potential voltage-gated sodium channel activity involved in cardiac muscle cell action potential voltage-gated sodium channel activity sodium channel regulator activity sodium channel inhibitor activity protein binding transmembrane transporter binding Cellular component integral component of membrane membrane sodium channel complex extracellular region voltage-gated sodium channel complex node of Ranvier intercalated disc T-tubule plasma membrane Biological process membrane depolarization during Purkinje myocyte cell action potential cardiac muscle contraction regulation of sodium ion transport sodium ion transport regulation of atrial cardiac muscle cell membrane depolarization membrane depolarization regulation of ion transmembrane transport cardiac muscle cell action potential involved in contraction ion transport cell adhesion regulation of sodium ion transmembrane transporter activity positive regulation of sodium ion transport response to pyrethroid regulation of heart rate by cardiac conduction chemical synaptic transmission corticospinal neuron axon guidance neuronal action potential propagation axon guidance cardiac conduction regulation of ventricular cardiac muscle cell membrane repolarization sodium ion transmembrane transport locomotion positive regulation of neuron projection development membrane depolarization during cardiac muscle cell action potential Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 6324 20266 Ensembl ENSG00000105711 ENSMUSG00000019194 UniProt Q07699 P97952 RefSeq (mRNA) NM_001037 NM_199037 NM_001321605 NM_011322 RefSeq (protein) NP_001028 NP_001308534 NP_950238 NP_035452 NP_001389263 Location (UCSC) Chr 19: 35.03 – 35.04 Mb Chr 7: 30.82 – 30.83 Mb PubMed search
Wikidata
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Sodium channel subunit beta-1 is a protein that in humans is encoded by the SCN1B gene.

Voltage-gated sodium channels are essential for the generation and propagation of action potentials in striated muscle and neuronal tissues. Biochemically, they consist of a large alpha subunit and 1 or 2 smaller beta subunits, such as SCN1B. The alpha subunit alone can exhibit all the functional attributes of a voltage-gated Na+ channel, but requires a beta-1 subunit for normal inactivation kinetics.[supplied by OMIM]

Clinical significance

Mutation in the SCN1B gene are associated with disorders such as Brugada syndrome, Dravet Syndrome, and GEFS.

See also

• Sodium channel

Further reading

• Hartshorne RP, Catterall WA (1984). "The sodium channel from rat brain. Purification and subunit composition". J. Biol. Chem. 259 (3): 1667–75. doi:10.1016/S0021-9258(17)43460-0. PMID 6319405.
• Makita N, Sloan-Brown K, Weghuis DO, et al. (1995). "Genomic organization and chromosomal assignment of the human voltage-gated Na+ channel beta 1 subunit gene (SCN1B)". Genomics. 23 (3): 628–34. doi:10.1006/geno.1994.1551. PMID 7851891.
• Makita N, Bennett PB, George AL (1994). "Voltage-gated Na+ channel beta 1 subunit mRNA expressed in adult human skeletal muscle, heart, and brain is encoded by a single gene". J. Biol. Chem. 269 (10): 7571–8. doi:10.1016/S0021-9258(17)37325-8. PMID 8125980.
• Wallace RH, Wang DW, Singh R, et al. (1998). "Febrile seizures and generalized epilepsy associated with a mutation in the Na+-channel beta1 subunit gene SCN1B". Nat. Genet. 19 (4): 366–70. doi:10.1038/1252. PMID 9697698. S2CID 20962841.
• Ratcliffe CF, Westenbroek RE, Curtis R, Catterall WA (2001). "Sodium channel beta1 and beta3 subunits associate with neurofascin through their extracellular immunoglobulin-like domain". J. Cell Biol. 154 (2): 427–34. doi:10.1083/jcb.200102086. PMC 2150779. PMID 11470829.
• Fahmi AI, Patel M, Stevens EB, et al. (2002). "The sodium channel beta-subunit SCN3b modulates the kinetics of SCN5a and is expressed heterogeneously in sheep heart". J. Physiol. 537 (Pt 3): 693–700. doi:10.1113/jphysiol.2001.012691. PMC 2278985. PMID 11744748.
• Malhotra JD, Koopmann MC, Kazen-Gillespie KA, et al. (2002). "Structural requirements for interaction of sodium channel beta 1 subunits with ankyrin". J. Biol. Chem. 277 (29): 26681–8. doi:10.1074/jbc.M202354200. PMID 11997395.
• Wallace RH, Scheffer IE, Parasivam G, et al. (2002). "Generalized epilepsy with febrile seizures plus: mutation of the sodium channel subunit SCN1B". Neurology. 58 (9): 1426–9. doi:10.1212/wnl.58.9.1426. PMID 12011299. S2CID 9403148.
• Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. Bibcode:2002PNAS...9916899M. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Meadows LS, Malhotra J, Loukas A, et al. (2003). "Functional and biochemical analysis of a sodium channel beta1 subunit mutation responsible for generalized epilepsy with febrile seizures plus type 1". J. Neurosci. 22 (24): 10699–709. doi:10.1523/JNEUROSCI.22-24-10699.2002. PMC 6758463. PMID 12486163.
• Aronica E, Troost D, Rozemuller AJ, et al. (2003). "Expression and regulation of voltage-gated sodium channel beta1 subunit protein in human gliosis-associated pathologies". Acta Neuropathol. 105 (5): 515–23. doi:10.1007/s00401-003-0677-2. hdl:2027.42/42208. PMID 12677453. S2CID 30847819.
• Audenaert D, Claes L, Ceulemans B, et al. (2004). "A deletion in SCN1B is associated with febrile seizures and early-onset absence epilepsy". Neurology. 61 (6): 854–6. doi:10.1212/01.wnl.0000080362.55784.1c. PMID 14504340. S2CID 20308172.
• Qin N, D'Andrea MR, Lubin ML, et al. (2004). "Molecular cloning and functional expression of the human sodium channel beta1B subunit, a novel splicing variant of the beta1 subunit". Eur. J. Biochem. 270 (23): 4762–70. doi:10.1046/j.1432-1033.2003.03878.x. PMID 14622265.
• McEwen DP, Meadows LS, Chen C, et al. (2004). "Sodium channel beta1 subunit-mediated modulation of Nav1.2 currents and cell surface density is dependent on interactions with contactin and ankyrin". J. Biol. Chem. 279 (16): 16044–9. doi:10.1074/jbc.M400856200. PMID 14761957.
• Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
• Platoshyn O, Remillard CV, Fantozzi I, et al. (2006). "Identification of functional voltage-gated Na(+) channels in cultured human pulmonary artery smooth muscle cells". Pflügers Arch. 451 (2): 380–7. doi:10.1007/s00424-005-1478-3. PMC 1351366. PMID 16052353.
• Thomas EA, Xu R, Petrou S (2007). "Computational analysis of the R85C and R85H epilepsy mutations in Na+ channel beta1 subunits". Neuroscience. 147 (4): 1034–46. doi:10.1016/j.neuroscience.2007.05.010. PMID 17604911. S2CID 24583074.
• Xu R, Thomas EA, Gazina EV, et al. (2007). "Generalized epilepsy with febrile seizures plus-associated sodium channel beta1 subunit mutations severely reduce beta subunit-mediated modulation of sodium channel function". Neuroscience. 148 (1): 164–74. doi:10.1016/j.neuroscience.2007.05.038. PMID 17629415. S2CID 36136731.

External links

• GeneReviews/NIH/NCBI/UW entry on Brugada syndrome
• SCN1B+protein,+human at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

This article incorporates text from the United States National Library of Medicine, which is in the public domain.