KCNE1L

Potassium channel, voltage gated subfamily E regulatory beta subunit 5

Identifiers

KCNE5 ; KCNE1L

External IDs

OMIM: 300328 MGI: 1913490 HomoloGene: 8177 GeneCards: KCNE5 Gene

Gene ontology
Molecular function	• voltage-gated potassium channel activity • potassium channel regulator activity • ion channel binding • voltage-gated potassium channel activity involved in cardiac muscle cell action potential repolarization
Cellular component	• voltage-gated potassium channel complex
Biological process	• regulation of heart contraction • cardiac muscle contraction • regulation of membrane repolarization • regulation of ventricular cardiac muscle cell membrane repolarization • regulation of atrial cardiac muscle cell membrane repolarization • potassium ion export • potassium ion transmembrane transport • ventricular cardiac muscle cell action potential • membrane repolarization during cardiac muscle cell action potential • atrial cardiac muscle cell action potential • regulation of heart rate by cardiac conduction • regulation of potassium ion transmembrane transport • negative regulation of potassium ion transmembrane transport • positive regulation of potassium ion transmembrane transport • regulation of cation channel activity
Sources: Amigo / QuickGO

Orthologs

Species

Human

Mouse

RefSeq (mRNA)

RefSeq (protein)

Location (UCSC)

Chr X:
109.62 – 109.63 Mb

Chr X:
142.3 – 142.31 Mb

PubMed search

KCNE1-like also known as KCNE1L is a protein that in humans is encoded by the KCNE1L gene.^[1]^[2]

Function

Voltage-gated potassium (K_v) 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. This gene encodes a membrane protein that has sequence similarity to the KCNE1 gene product, a member of the potassium channel, voltage-gated, isk-related subfamily.^[2]

Clinical significance

This intronless gene is deleted in AMME contiguous gene syndrome and may be involved in the cardiac and neurologic abnormalities found in the AMME contiguous gene syndrome.^[1]

References

1 2 Piccini M, Vitelli F, Seri M, Galietta LJ, Moran O, Bulfone A, Banfi S, Pober B, Renieri A (September 1999). "KCNE1-like gene is deleted in AMME contiguous gene syndrome: identification and characterization of the human and mouse homologs". Genomics 60 (3): 251–7. doi:10.1006/geno.1999.5904. PMID 10493825.
1 2 "Entrez Gene: KCNE1L".

Yang Y, Xia M, Jin Q, et al. (2004). "Identification of a KCNE2 gain-of-function mutation in patients with familial atrial fibrillation.". Am. J. Hum. Genet. 75 (5): 899–905. doi:10.1086/425342. PMC 1182120. PMID 15368194.
Hofman-Bang J, Jespersen T, Grunnet M, et al. (2004). "Does KCNE5 play a role in long QT syndrome?". Clin. Chim. Acta 345 (1-2): 49–53. doi:10.1016/j.cccn.2004.02.033. PMID 15193977.
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.
Ravn LS, Hofman-Bang J, Dixen U, et al. (2005). "Relation of 97T polymorphism in KCNE5 to risk of atrial fibrillation.". Am. J. Cardiol. 96 (3): 405–7. doi:10.1016/j.amjcard.2005.03.086. PMID 16054468.
Maruyama K, Sugano S (1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides.". Gene 138 (1-2): 171–4. doi:10.1016/0378-1119(94)90802-8. PMID 8125298.
Strausberg RL, Feingold EA, Grouse LH, et al. (2002). "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. PMC 139241. PMID 12477932.
Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, et al. (1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library.". Gene 200 (1-2): 149–56. doi:10.1016/S0378-1119(97)00411-3. PMID 9373149.
Ravn LS, Aizawa Y, Pollevick GD, et al. (2008). "Gain of function in IKs secondary to a mutation in KCNE5 associated with atrial fibrillation.". Heart rhythm : the official journal of the Heart Rhythm Society 5 (3): 427–35. doi:10.1016/j.hrthm.2007.12.019. PMC 2515863. PMID 18313602.
Lundquist AL, Turner CL, Ballester LY, George AL (2006). "Expression and transcriptional control of human KCNE genes.". Genomics 87 (1): 119–28. doi:10.1016/j.ygeno.2005.09.004. PMID 16303284.

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

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

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KCNE1L

Function

Clinical significance

References

Further reading