T3DB: Potassium voltage-gated channel subfamily A member 5

Name	Potassium voltage-gated channel subfamily A member 5
Synonyms	HPCN1 Voltage-gated potassium channel HK2 Voltage-gated potassium channel subunit Kv1.5
Gene Name	KCNA5
Organism	Human
Amino acid sequence	>lcl\|BSEQ0008568\|Potassium voltage-gated channel subfamily A member 5 MEIALVPLENGGAMTVRGGDEARAGCGQATGGELQCPPTAGLSDGPKEPAPKGRGAQRDA DSGVRPLPPLPDPGVRPLPPLPEELPRPRRPPPEDEEEEGDPGLGTVEDQALGTASLHHQ RVHINISGLRFETQLGTLAQFPNTLLGDPAKRLRYFDPLRNEYFFDRNRPSFDGILYYYQ SGGRLRRPVNVSLDVFADEIRFYQLGDEAMERFREDEGFIKEEEKPLPRNEFQRQVWLIF EYPESSGSARAIAIVSVLVILISIITFCLETLPEFRDERELLRHPPAPHQPPAPAPGANG SGVMAPPSGPTVAPLLPRTLADPFFIVETTCVIWFTFELLVRFFACPSKAGFSRNIMNII DVVAIFPYFITLGTELAEQQPGGGGGGQNGQQAMSLAILRVIRLVRVFRIFKLSRHSKGL QILGKTLQASMRELGLLIFFLFIGVILFSSAVYFAEADNQGTHFSSIPDAFWWAVVTMTT VGYGDMRPITVGGKIVGSLCAIAGVLTIALPVPVIVSNFNYFYHRETDHEEPAVLKEEQG TQSQGPGLDRGVQRKVSGSRGSFCKAGGTLENADSARRGSCPLEKCNVKAKSNVDLRRSL YALCLDTSRETDL
Number of residues	613
Molecular Weight	67227.15
Theoretical pI	Not Available
GO Classification	Functions delayed rectifier potassium channel activity scaffold protein binding outward rectifier potassium channel activity potassium channel inhibitor activity alpha-actinin binding voltage-gated potassium channel activity involved in atrial cardiac muscle cell action potential repolarization voltage-gated potassium channel activity involved in bundle of His cell action potential repolarization voltage-gated potassium channel activity involved in SA node cell action potential repolarization protein kinase binding Processes positive regulation of G1/S transition of mitotic cell cycle synaptic transmission potassium ion export regulation of vasoconstriction membrane hyperpolarization regulation of atrial cardiac muscle cell membrane repolarization atrial cardiac muscle cell action potential regulation of heart rate by cardiac conduction positive regulation of myoblast proliferation response to mechanical stimulus response to hydrogen peroxide protein homooligomerization response to hyperoxia Notch signaling pathway response to hypoxia membrane repolarization during bundle of His cell action potential regulation of membrane potential regulation of insulin secretion membrane repolarization during SA node cell action potential negative regulation of potassium ion transport negative regulation of cytosolic calcium ion concentration potassium ion transmembrane transport regulation of potassium ion transport potassium ion homeostasis potassium ion transport response to organic substance Components potassium channel complex plasma membrane intercalated disc voltage-gated potassium channel complex Z disc Golgi apparatus cytosol intracellular canaliculus perinuclear region of cytoplasm integral component of plasma membrane membrane raft endoplasmic reticulum
General Function	Voltage-gated potassium channel activity involved in sa node cell action potential repolarization
Specific Function	Voltage-gated potassium channel that mediates transmembrane potassium transport in excitable membranes. Forms tetrameric potassium-selective channels through which potassium ions pass in accordance with their electrochemical gradient. The channel alternates between opened and closed conformations in response to the voltage difference across the membrane. Can form functional homotetrameric channels and heterotetrameric channels that contain variable proportions of KCNA1, KCNA2, KCNA4, KCNA5, and possibly other family members as well; channel properties depend on the type of alpha subunits that are part of the channel (PubMed:12130714). Channel properties are modulated by cytoplasmic beta subunits that regulate the subcellular location of the alpha subunits and promote rapid inactivation (PubMed:12130714). Homotetrameric channels display rapid activation and slow inactivation (PubMed:8505626, PubMed:12130714). May play a role in regulating the secretion of insulin in normal pancreatic islets. Isoform 2 exhibits a voltage-dependent recovery from inactivation and an excessive cumulative inactivation (PubMed:11524461).
Pfam Domain Function	Ion_trans (PF00520 ) BTB_2 (PF02214 )
Transmembrane Regions	248-269 324-345 357-377 396-416 432-453 495-523
GenBank Protein ID	Not Available
UniProtKB ID	P22460
UniProtKB Entry Name	KCNA5_HUMAN
Cellular Location	Cell membrane
Gene sequence	>lcl\|BSEQ0017518\|Potassium voltage-gated channel subfamily A member 5 (KCNA5) ATGGAGATCGCCCTGGTGCCCCTGGAGAACGGCGGTGCCATGACCGTCAGAGGAGGCGAT GAGGCCCGGGCAGGCTGCGGCCAGGCCACAGGGGGAGAGCTCCAGTGTCCCCCGACGGCT GGGCTCAGCGATGGGCCCAAGGAGCCGGCGCCAAAGGGGCGCGGCGCGCAGAGAGACGCG GACTCGGGAGTGCGGCCCTTGCCTCCGCTGCCGGACCCGGGAGTGCGGCCCTTGCCTCCG CTGCCAGAGGAGCTGCCACGGCCTCGACGGCCGCCTCCCGAGGACGAGGAGGAAGAAGGC GATCCCGGCCTGGGCACGGTGGAGGACCAGGCTCTGGGCACGGCGTCCCTGCACCACCAG CGCGTCCACATCAACATCTCCGGGCTGCGCTTTGAGACGCAGCTGGGCACCCTGGCGCAG TTCCCCAACACACTCCTGGGGGACCCCGCCAAGCGCCTGCGCTACTTCGACCCCCTGAGG AACGAGTACTTCTTCGACCGCAACCGGCCCAGCTTCGACGGTATCCTCTACTACTACCAG TCCGGGGGCCGCCTGCGGAGGCCGGTCAACGTCTCCCTGGACGTGTTCGCGGACGAGATA CGCTTCTACCAGCTGGGGGACGAGGCCATGGAGCGCTTCCGCGAGGATGAGGGCTTCATT AAAGAAGAGGAGAAGCCCCTGCCCCGCAACGAGTTCCAGCGCCAGGTGTGGCTTATCTTC GAGTATCCGGAGAGCTCTGGGTCCGCGCGGGCCATCGCCATCGTCTCGGTCTTGGTTATC CTCATCTCCATCATCACCTTCTGCTTGGAGACCCTGCCTGAGTTCAGGGATGAACGTGAG CTGCTCCGCCACCCTCCGGCGCCCCACCAGCCTCCCGCGCCCGCCCCTGGGGCCAACGGC AGCGGGGTCATGGCCCCGCCCTCTGGCCCTACGGTGGCACCGCTCCTGCCCAGGACCCTG GCCGACCCCTTCTTCATCGTGGAGACCACGTGCGTCATCTGGTTCACCTTCGAGCTGCTC GTGCGCTTCTTCGCCTGCCCCAGCAAGGCAGGGTTCTCCCGGAACATCATGAACATCATC GATGTGGTGGCCATCTTCCCCTACTTCATCACCCTGGGCACCGAACTGGCAGAGCAGCAG CCAGGGGGTGGAGGAGGCGGCCAGAATGGGCAGCAGGCCATGTCCCTGGCCATCCTCCGA GTCATCCGCCTGGTCCGGGTGTTCCGCATCTTCAAGCTCTCCCGCCACTCCAAGGGGCTG CAGATCCTGGGCAAGACCTTGCAGGCCTCCATGAGGGAGCTGGGGCTGCTCATCTTCTTC CTCTTCATCGGGGTCATCCTCTTCTCCAGTGCCGTCTACTTCGCAGAGGCTGACAACCAG GGAACCCATTTCTCTAGCATCCCTGACGCCTTCTGGTGGGCAGTGGTCACCATGACCACT GTGGGCTACGGGGACATGAGGCCCATCACTGTTGGGGGCAAGATCGTGGGCTCGCTGTGT GCCATCGCCGGGGTCCTCACCATTGCCCTGCCTGTGCCCGTCATCGTCTCCAACTTCAAC TACTTCTACCACCGGGAAACGGATCACGAGGAGCCGGCAGTCCTTAAGGAAGAGCAGGGC ACTCAGAGCCAGGGGCCGGGGCTGGACAGAGGAGTCCAGCGGAAGGTCAGCGGGAGCAGG GGATCCTTCTGCAAGGCTGGGGGGACCCTGGAGAATGCAGACAGTGCCCGAAGGGGCAGC TGCCCCCTAGAGAAGTGTAACGTCAAGGCCAAGAGCAACGTGGACTTGCGGAGGTCCCTT TATGCCCTCTGCCTGGACACCAGCCGGGAAACAGATTTGTGA
GenBank Gene ID	Not Available
GeneCard ID	Not Available
GenAtlas ID	Not Available
HGNC ID	HGNC:6224
Chromosome Location	12
Locus	Not Available
References	Tamkun MM, Knoth KM, Walbridge JA, Kroemer H, Roden DM, Glover DM: Molecular cloning and characterization of two voltage-gated K+ channel cDNAs from human ventricle. FASEB J. 1991 Mar 1;5(3):331-7. 2001794 Philipson LH, Hice RE, Schaefer K, LaMendola J, Bell GI, Nelson DJ, Steiner DF: Sequence and functional expression in Xenopus oocytes of a human insulinoma and islet potassium channel. Proc Natl Acad Sci U S A. 1991 Jan 1;88(1):53-7. 1986382 Curran ME, Landes GM, Keating MT: Molecular cloning, characterization, and genomic localization of a human potassium channel gene. Genomics. 1992 Apr;12(4):729-37. 1349297 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. 15489334 Snyders DJ, Tamkun MM, Bennett PB: A rapidly activating and slowly inactivating potassium channel cloned from human heart. Functional analysis after stable mammalian cell culture expression. J Gen Physiol. 1993 Apr;101(4):513-43. 8505626 Kurata HT, Soon GS, Fedida D: Altered state dependence of c-type inactivation in the long and short forms of human Kv1.5. J Gen Physiol. 2001 Sep;118(3):315-32. 11524461 Williams CP, Hu N, Shen W, Mashburn AB, Murray KT: Modulation of the human Kv1.5 channel by protein kinase C activation: role of the Kvbeta1.2 subunit. J Pharmacol Exp Ther. 2002 Aug;302(2):545-50. 12130714 Mathur R, Choi WS, Eldstrom J, Wang Z, Kim J, Steele DF, Fedida D: A specific N-terminal residue in Kv1.5 is required for upregulation of the channel by SAP97. Biochem Biophys Res Commun. 2006 Mar 31;342(1):1-8. Epub 2006 Jan 31. 16466689 Olson TM, Alekseev AE, Liu XK, Park S, Zingman LV, Bienengraeber M, Sattiraju S, Ballew JD, Jahangir A, Terzic A: Kv1.5 channelopathy due to KCNA5 loss-of-function mutation causes human atrial fibrillation. Hum Mol Genet. 2006 Jul 15;15(14):2185-91. Epub 2006 Jun 13. 16772329 Benson MD, Li QJ, Kieckhafer K, Dudek D, Whorton MR, Sunahara RK, Iniguez-Lluhi JA, Martens JR: SUMO modification regulates inactivation of the voltage-gated potassium channel Kv1.5. Proc Natl Acad Sci U S A. 2007 Feb 6;104(6):1805-10. Epub 2007 Jan 29. 17261810 Sjoblom T, Jones S, Wood LD, Parsons DW, Lin J, Barber TD, Mandelker D, Leary RJ, Ptak J, Silliman N, Szabo S, Buckhaults P, Farrell C, Meeh P, Markowitz SD, Willis J, Dawson D, Willson JK, Gazdar AF, Hartigan J, Wu L, Liu C, Parmigiani G, Park BH, Bachman KE, Papadopoulos N, Vogelstein B, Kinzler KW, Velculescu VE: The consensus coding sequences of human breast and colorectal cancers. Science. 2006 Oct 13;314(5797):268-74. Epub 2006 Sep 7. 16959974