KCNAB2

From Wikipedia, the free encyclopedia

Potassium voltage-gated channel, shaker-related subfamily, beta member 2

PDB rendering based on 1exb.

Available structures: 1exb, 1qrq, 1zsx, 2a79

Identifiers

Symbol(s)

KCNAB2; AKR6A5; HKvbeta2; HKvbeta2.1; HKvbeta2.2; KCNA2B; KV-BETA-2; MGC117289

External IDs

OMIM: 601142 MGI: 109239 HomoloGene: 56492

Gene ontology
Molecular Function:	• ion channel activity • voltage-gated potassium channel activity • potassium channel regulator activity • oxidoreductase activity • potassium ion binding
Cellular Component:	• cytoplasm • integral to membrane
Biological Process:	• ion transport • potassium ion transport

RNA expression pattern

More reference expression data

Orthologs

Human

Mouse

Refseq

NM_003636 (mRNA)
NP_003627 (protein)

NM_010598 (mRNA)
NP_034728 (protein)

Location

Chr 1: 5.97 - 6.08 Mb

Chr 4: 151.23 - 151.32 Mb

Pubmed search

[1]

[2]

Potassium voltage-gated channel, shaker-related subfamily, beta member 2, also known as KCNAB2, is a human gene.^[1]

Voltage-gated potassium (Kv) channels represent the most complex class of voltage-gated ion channels from both functional and structural standpoints. Their diverse functions include regulating neurotransmitter release, heart rate, insulin secretion, neuronal excitability, epithelial electrolyte transport, smooth muscle contraction, and cell volume. Four sequence-related potassium channel genes - shaker, shaw, shab, and shal - have been identified in Drosophila, and each has been shown to have human homolog(s). This gene encodes a member of the potassium channel, voltage-gated, shaker-related subfamily. This member is one of the beta subunits, which are auxiliary proteins associating with functional Kv-alpha subunits. This member alters functional properties of the KCNA4 gene product. Alternative splicing of this gene results in two transcript variants encoding distinct isoforms.^[1]

1 See also
2 References
3 Further reading
4 External links

[edit] See also

Voltage-gated potassium channel

[edit] References

^ ^a ^b Entrez Gene: KCNAB2 potassium voltage-gated channel, shaker-related subfamily, beta member 2.

[edit] Further reading

McCormack K, McCormack T, Tanouye M, et al. (1995). "Alternative splicing of the human Shaker K+ channel beta 1 gene and functional expression of the beta 2 gene product.". FEBS Lett. 370 (1-2): 32-6. PMID 7649300.
McCormack T, McCormack K (1995). "Shaker K+ channel beta subunits belong to an NAD(P)H-dependent oxidoreductase superfamily.". Cell 79 (7): 1133-5. PMID 8001150.
Nakahira K, Shi G, Rhodes KJ, Trimmer JS (1996). "Selective interaction of voltage-gated K+ channel beta-subunits with alpha-subunits.". J. Biol. Chem. 271 (12): 7084-9. PMID 8636142.
Schultz D, Litt M, Smith L, et al. (1997). "Localization of two potassium channel beta subunit genes, KCNA1B and KCNA2B.". Genomics 31 (3): 389-91. doi:10.1006/geno.1996.0065. PMID 8838324.
Kääb S, Dixon J, Duc J, et al. (1998). "Molecular basis of transient outward potassium current downregulation in human heart failure: a decrease in Kv4.3 mRNA correlates with a reduction in current density.". Circulation 98 (14): 1383-93. PMID 9760292.
Coleman SK, Newcombe J, Pryke J, Dolly JO (1999). "Subunit composition of Kv1 channels in human CNS.". J. Neurochem. 73 (2): 849-58. PMID 10428084.
Poliak S, Gollan L, Martinez R, et al. (2000). "Caspr2, a new member of the neurexin superfamily, is localized at the juxtaparanodes of myelinated axons and associates with K+ channels.". Neuron 24 (4): 1037-47. PMID 10624965.
Croci C, Brändstatter JH, Enz R (2003). "ZIP3, a new splice variant of the PKC-zeta-interacting protein family, binds to GABAC receptors, PKC-zeta, and Kv beta 2.". J. Biol. Chem. 278 (8): 6128-35. doi:10.1074/jbc.M205162200. PMID 12431995.
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. doi:10.1073/pnas.242603899. PMID 12477932.
Gu C, Jan YN, Jan LY (2003). "A conserved domain in axonal targeting of Kv1 (Shaker) voltage-gated potassium channels.". Science 301 (5633): 646-9. doi:10.1126/science.1086998. PMID 12893943.
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.
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. PMID 15489334.
Rush J, Moritz A, Lee KA, et al. (2005). "Immunoaffinity profiling of tyrosine phosphorylation in cancer cells.". Nat. Biotechnol. 23 (1): 94-101. doi:10.1038/nbt1046. PMID 15592455.
Gregory SG, Barlow KF, McLay KE, et al. (2006). "The DNA sequence and biological annotation of human chromosome 1.". Nature 441 (7091): 315-21. doi:10.1038/nature04727. PMID 16710414.
Lim J, Hao T, Shaw C, et al. (2006). "A protein-protein interaction network for human inherited ataxias and disorders of Purkinje cell degeneration.". Cell 125 (4): 801-14. doi:10.1016/j.cell.2006.03.032. PMID 16713569.

[edit] External links

MeSH KCNAB2+protein,+human

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

v • d • e Membrane transport protein: ion channels

Ca²⁺: Calcium channel	Voltage-dependent calcium channel (L-type/Ca_vα(1.1, 1.2, 1.3, 1.4), N-type, P-type/Ca_vα(2.1), Q-type, R-type, T-type, α₂δ-subunits (1, 2), β-subunits (β1, β2, β3, β4), γ-subunits (γ1, γ2, γ3, γ4) Inositol triphosphate receptor • Ryanodine receptor • Cation channels of sperm • Two-pore channel

Na⁺: Sodium channel	Na_vα (1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.9, 7A) • Na_vβ (1, 2, 3, 4) • Epithelial sodium channel

K⁺: Potassium channel	Voltage-gated (K_vα (1.1, 1.2, 1.3, 1.4, 1.5, 2.1, 3.1, 3.4, 4.1, 4.2, 4.3, 6.1, 7.1, 7.2, 7.3, 7.4, 7.5, 9.3, 10.1, 11.1/hERG) • K_vβ (1, 2), Shaker gene, KCNE1) Calcium-activated (BK channel: α1, β1, β2, β3, β4; SK channel: SK1, SK2, SK3, SK4) Inward-rectifier K_ir (1.1, 2.1, 2.2, 2.3, 2.4, GIRK, 3.1, 3.2, 3.3, 3.4, 4.1, 4.2, 5.1, 6.1, 6.2, 7.1) Tandem pore domain K2P (1, 2, 3, 4, 6, 9, 15, 17)

Cl^-: Chloride channel	Cystic fibrosis transmembrane conductance regulator

Porin	Aquaporin (1, 2, 3, 4, 5, 7, 8, 9) • Voltage-dependent anion channel (1)

Cations: TRP	TRPA (1) • TRPC (1, 2, 3, 4, 4AP, 5, 6, 7) • TRPM (1, 2, 3, 4, 5, 6, 7, 8) • TRPML (Mucolipin-1) • TRPP (1, 2) • TRPV (1, 2, 3, 4, 5, 6)

Other/general	Voltage-gated ion channel • Ligand-gated ion channel • Cyclic nucleotide-gated ion channel (α1, α2, α3, β1, β3, H1, H2, H3, H4) • Stretch-activated ion channel

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KCNAB2

From Wikipedia, the free encyclopedia

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[edit] See also

[edit] References

[edit] Further reading

[edit] External links

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