Sodium channel regulatory subunit beta-2

Details

Name
Sodium channel regulatory subunit beta-2
Synonyms
Not Available
Gene Name
SCN2B
UniProtKB Entry
O60939Swiss-Prot
Organism
Humans
NCBI Taxonomy ID
9606
Amino acid sequence
>lcl|BSEQ0012528|Sodium channel regulatory subunit beta-2
MHRDAWLPRPAFSLTGLSLFFSLVPPGRSMEVTVPATLNVLNGSDARLPCTFNSCYTVNH
KQFSLNWTYQECNNCSEEMFLQFRMKIINLKLERFQDRVEFSGNPSKYDVSVMLRNVQPE
DEGIYNCYIMNPPDRHRGHGKIHLQVLMEEPPERDSTVAVIVGASVGGFLAVVILVLMVV
KCVRRKKEQKLSTDDLKTEEEGKTDGEGNPDDGAK
Number of residues
215
Molecular Weight
24325.69
Theoretical pI
6.35
GO Classification
Functions
voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization
Processes
chemical synaptic transmission / gene expression / membrane depolarization during action potential / positive regulation of sodium ion transport / response to heat
Components
plasma membrane / synapse / T-tubule
General Function
Regulatory subunit of multiple voltage-gated sodium (Nav) channels directly mediating the depolarization of excitable membranes (PubMed:19808477, PubMed:23559163, PubMed:26894959, PubMed:30765605, PubMed:30765606, PubMed:35277491, PubMed:36823201). Navs, also called VGSCs (voltage-gated sodium channels) or VDSCs (voltage-dependent sodium channels), operate by switching between closed and open conformations depending on the voltage difference across the membrane. In the open conformation they allow Na(+) ions to selectively pass through the pore, along their electrochemical gradient. The influx of Na+ ions provokes membrane depolarization, initiating the propagation of electrical signals throughout cells and tissues (PubMed:19808477, PubMed:23559163, PubMed:26894959). The accessory beta subunits participate in localization and functional modulation of the Nav channels (PubMed:19808477, PubMed:23559163). Modulates the activity of SCN1A/Nav1.1, SCN2A/Nav1.2, SCN2A/Nav1.3, SCN5A/Nav1.5, SCN8A/Nav1.6, SCN9A/Nav1.7 and SCN10A/Nav1.8 (PubMed:19808477, PubMed:23559163, PubMed:26894959, PubMed:30765605, PubMed:30765606, PubMed:35277491, PubMed:36823201)
Specific Function
sodium channel regulator activity
Pfam Domain Function
Not Available
Signal Regions
1-29
Transmembrane Regions
158-179
Cellular Location
Cell membrane
Gene sequence
>lcl|BSEQ0012529|Sodium channel subunit beta-2 (SCN2B)
ATGCACAGAGATGCCTGGCTACCTCGCCCTGCCTTCAGCCTCACGGGGCTCAGTCTCTTT
TTCTCTTTGGTGCCACCAGGACGGAGCATGGAGGTCACAGTACCTGCCACCCTCAACGTC
CTCAATGGCTCTGACGCCCGCCTGCCCTGCACCTTCAACTCCTGCTACACAGTGAACCAC
AAACAGTTCTCCCTGAACTGGACTTACCAGGAGTGCAACAACTGCTCTGAGGAGATGTTC
CTCCAGTTCCGCATGAAGATCATTAACCTGAAGCTGGAGCGGTTTCAAGACCGCGTGGAG
TTCTCAGGGAACCCCAGCAAGTACGATGTGTCGGTGATGCTGAGAAACGTGCAGCCGGAG
GATGAGGGGATTTACAACTGCTACATCATGAACCCCCCTGACCGCCACCGTGGCCATGGC
AAGATCCATCTGCAGGTCCTCATGGAAGAGCCCCCTGAGCGGGACTCCACGGTGGCCGTG
ATTGTGGGTGCCTCCGTCGGGGGCTTCCTGGCTGTGGTCATCTTGGTGCTGATGGTGGTC
AAGTGTGTGAGGAGAAAAAAAGAGCAGAAGCTGAGCACAGATGACCTGAAGACCGAGGAG
GAGGGCAAGACGGACGGTGAAGGCAACCCGGATGATGGCGCCAAGTAG
Chromosome Location
11
Locus
11q23.3
External Identifiers
ResourceLink
UniProtKB IDO60939
UniProtKB Entry NameSCN2B_HUMAN
GenBank Protein ID3309111
GenBank Gene IDAF007783
GeneCard IDSCN2B
HGNC IDHGNC:10589
PDB ID(s)5FDY, 5FEB, 6J8E, 6J8G, 6J8H, 6J8I, 6J8J, 6VRR, 7W77, 7W7F, 7W9K, 7W9L, 7W9M, 7W9P, 7W9T, 7XM9, 7XMF, 7XMG, 7XVE, 7XVF, 8G1A, 8GZ1, 8GZ2, 8I5B, 8I5G, 8I5X, 8I5Y, 8S9B, 8S9C, 8THG, 8THH, 8XMN, 8XMO
KEGG IDhsa:6327
NCBI Gene ID6327
General References
  1. Eubanks J, Srinivasan J, Dinulos MB, Disteche CM, Catterall WA: Structure and chromosomal localization of the beta2 subunit of the human brain sodium channel. Neuroreport. 1997 Aug 18;8(12):2775-9. [Article]
  2. Bolino A, Seri M, Caroli F, Eubanks J, Srinivasan J, Mandich P, Schenone A, Quattrone A, Romeo G, Catterall WA, Devoto M: Exclusion of the SCN2B gene as candidate for CMT4B. Eur J Hum Genet. 1998 Nov-Dec;6(6):629-34. [Article]
  3. Clark HF, Gurney AL, Abaya E, Baker K, Baldwin D, Brush J, Chen J, Chow B, Chui C, Crowley C, Currell B, Deuel B, Dowd P, Eaton D, Foster J, Grimaldi C, Gu Q, Hass PE, Heldens S, Huang A, Kim HS, Klimowski L, Jin Y, Johnson S, Lee J, Lewis L, Liao D, Mark M, Robbie E, Sanchez C, Schoenfeld J, Seshagiri S, Simmons L, Singh J, Smith V, Stinson J, Vagts A, Vandlen R, Watanabe C, Wieand D, Woods K, Xie MH, Yansura D, Yi S, Yu G, Yuan J, Zhang M, Zhang Z, Goddard A, Wood WI, Godowski P, Gray A: The secreted protein discovery initiative (SPDI), a large-scale effort to identify novel human secreted and transmembrane proteins: a bioinformatics assessment. Genome Res. 2003 Oct;13(10):2265-70. Epub 2003 Sep 15. [Article]
  4. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. [Article]
  5. Chen C, Calhoun JD, Zhang Y, Lopez-Santiago L, Zhou N, Davis TH, Salzer JL, Isom LL: Identification of the cysteine residue responsible for disulfide linkage of Na+ channel alpha and beta2 subunits. J Biol Chem. 2012 Nov 9;287(46):39061-9. doi: 10.1074/jbc.M112.397646. Epub 2012 Sep 19. [Article]
  6. Watanabe H, Darbar D, Kaiser DW, Jiramongkolchai K, Chopra S, Donahue BS, Kannankeril PJ, Roden DM: Mutations in sodium channel beta1- and beta2-subunits associated with atrial fibrillation. Circ Arrhythm Electrophysiol. 2009 Jun;2(3):268-75. doi: 10.1161/CIRCEP.108.779181. Epub 2009 Mar 6. [Article]
  7. Riuro H, Beltran-Alvarez P, Tarradas A, Selga E, Campuzano O, Verges M, Pagans S, Iglesias A, Brugada J, Brugada P, Vazquez FM, Perez GJ, Scornik FS, Brugada R: A missense mutation in the sodium channel beta2 subunit reveals SCN2B as a new candidate gene for Brugada syndrome. Hum Mutat. 2013 Jul;34(7):961-6. doi: 10.1002/humu.22328. Epub 2013 Apr 29. [Article]

Associated Data

Bio-Entities
Bio-EntityType
Sodium channel regulatory subunit beta-2 (Humans)protein
primary
Sodium channel protein (Humans)protein
Drug Relations
DrugDrug groupPharmacological action?TypeActionsDetails
Zonisamideapproved, investigationalyestargetinhibitorDetails
Cocaineapproved, illicityestargetinhibitorDetails
Valproic acidapproved, investigationalunknowntargetinhibitorDetails
Brivaracetamapproved, investigationalyestargetinhibitorDetails
Fish oilapproved, nutraceuticalunknowntargetinhibitorDetails
Dichlorobenzyl alcoholapprovedyestargetantagonistDetails
Ranolazineapproved, investigationalunknowntargetinhibitorDetails
OxcarbazepineapprovedunknowntargetinhibitorDetails