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Identification
HMDB Protein ID HMDBP08745
Secondary Accession Numbers
  • 14468
Name ATP-sensitive inward rectifier potassium channel 8
Synonyms
  1. Inward rectifier K(+) channel Kir6.1
  2. Potassium channel, inwardly rectifying subfamily J member 8
  3. uKATP-1
Gene Name KCNJ8
Protein Type Unknown
Biological Properties
General Function Involved in inward rectifier potassium channel activity
Specific Function This potassium channel is controlled by G proteins. Inward rectifier potassium channels are characterized by a greater tendency to allow potassium to flow into the cell rather than out of it. Their voltage dependence is regulated by the concentration of extracellular potassium; as external potassium is raised, the voltage range of the channel opening shifts to more positive voltages. The inward rectification is mainly due to the blockage of outward current by internal magnesium. Can be blocked by external barium
Pathways
  • Acebutolol Action Pathway
  • Alprenolol Action Pathway
  • Amiodarone Action Pathway
  • Amlodipine Action Pathway
  • Arbutamine Action Pathway
  • Atenolol Action Pathway
  • Betaxolol Action Pathway
  • Bevantolol Action Pathway
  • Bisoprolol Action Pathway
  • Bopindolol Action Pathway
  • Bupranolol Action Pathway
  • Carteolol Action Pathway
  • Carvedilol Action Pathway
  • Diltiazem Action Pathway
  • Disopyramide Action Pathway
  • Dobutamine Action Pathway
  • Epinephrine Action Pathway
  • Esmolol Action Pathway
  • Felodipine Action Pathway
  • Flecainide Action Pathway
  • Fosphenytoin (Antiarrhythmic) Action Pathway
  • Ibutilide Action Pathway
  • Isoprenaline Action Pathway
  • Isradipine Action Pathway
  • Labetalol Action Pathway
  • Levobunolol Action Pathway
  • Lidocaine (Antiarrhythmic) Action Pathway
  • Metipranolol Action Pathway
  • Metoprolol Action Pathway
  • Mexiletine Action Pathway
  • Muscle/Heart Contraction
  • Nadolol Action Pathway
  • Nebivolol Action Pathway
  • Nifedipine Action Pathway
  • Nimodipine Action Pathway
  • Nisoldipine Action Pathway
  • Nitrendipine Action Pathway
  • Oxprenolol Action Pathway
  • Penbutolol Action Pathway
  • Phenytoin (Antiarrhythmic) Action Pathway
  • Pindolol Action Pathway
  • Practolol Action Pathway
  • Procainamide (Antiarrhythmic) Action Pathway
  • Propranolol Action Pathway
  • Quinidine Action Pathway
  • Sotalol Action Pathway
  • Timolol Action Pathway
  • Tocainide Action Pathway
  • Verapamil Action Pathway
Reactions Not Available
GO Classification
Component
membrane
cell part
Function
atp-activated inward rectifier potassium channel activity
transmembrane transporter activity
substrate-specific transmembrane transporter activity
ion transmembrane transporter activity
transporter activity
ion channel activity
inward rectifier potassium channel activity
cation channel activity
potassium channel activity
voltage-gated potassium channel activity
Process
establishment of localization
transport
monovalent inorganic cation transport
potassium ion transport
ion transport
cation transport
Cellular Location
  1. Membrane
  2. Multi-pass membrane protein
Gene Properties
Chromosome Location Chromosome:1
Locus 12p11.23
SNPs KCNJ8
Gene Sequence
>1275 bp
ATGTTGGCCAGAAAGAGTATCATCCCGGAGGAGTATGTGCTGGCGCGCATCGCCGCAGAG
AACCTGCGCAAGCCGCGCATCCGAGACCGCCTCCCCAAAGCCCGCTTCATCGCCAAGAGC
GGGGCCTGCAACCTGGCGCATAAGAACATCCGTGAGCAAGGACGCTTTCTACAGGACATC
TTCACCACCTTGGTGGACCTGAAATGGCGCCACACGCTGGTCATCTTTACCATGTCCTTC
CTCTGCAGCTGGCTGCTCTTCGCTATCATGTGGTGGCTGGTGGCCTTTGCCCATGGGGAC
ATCTATGCTTACATGGAGAAAAGTGGAATGGAGAAAAGTGGTTTGGAGTCCACTGTGTGT
GTGACTAATGTCAGGTCTTTCACTTCTGCTTTTCTCTTCTCCATTGAAGTTCAAGTTACC
ATTGGGTTTGGAGGGAGGATGATGACAGAGGAATGCCCTTTGGCCATCACGGTTTTGATT
CTCCAGAATATTGTGGGTTTGATCATCAATGCAGTCATGTTAGGCTGCATTTTCATGAAA
ACAGCTCAGGCTCACAGAAGGGCAGAAACTTTGATTTTCAGCCGCCATGCTGTGATTGCC
GTCCGAAATGGCAAGCTGTGCTTCATGTTCCGAGTGGGTGACCTGAGGAAAAGCATGATC
ATTAGTGCCTCTGTGCGCATCCAGGTGGTCAAGAAAACAACTACACCTGAAGGGGAGGTG
GTTCCTATTCACCAACTGGACATTCCTGTTGATAACCCAATCGAGAGCAATAACATTTTT
CTGGTGGCCCCTTTGATCATCTGCCACGTGATTGACAAGCGCAGTCCCCTGTATGACATC
TCAGCAACTGACCTGGCCAACCAAGACTTGGAGGTCATAGTTATTCTGGAAGGAGTGGTT
GAAACTACTGGCATCACCACACAAGCACGAACCTCCTACATTGCTGAGGAGATCCAATGG
GGCCACCGCTTTGTGTCCATTGTGACTGAGGAAGAAGGAGTGTATTCTGTGGATTACTCC
AAATTTGGCAACACTGTTAAAGTAGCTGCTCCACGGTGCAGTGCCCGAGAGCTGGATGAG
AAACCTTCCATCCTTATTCAGACCCTCCAAAAGAGTGAACTGTCTCATCAAAATTCTCTG
AGGAAGCGCAACTCCATGAGAAGAAACAATTCCATGAGGAGGAACAATTCTATCCGAAGG
AACAATTCTTCCCTCATGGTACCAAAGGTGCAATTTATGACTCCAGAAGGAAATCAAAAC
ACATCGGAATCATGA
Protein Properties
Number of Residues 424
Molecular Weight 47967.5
Theoretical pI 9.7
Pfam Domain Function
Signals
  • None
Transmembrane Regions
  • 70-94
  • 155-176
Protein Sequence
>ATP-sensitive inward rectifier potassium channel 8
MLARKSIIPEEYVLARIAAENLRKPRIRDRLPKARFIAKSGACNLAHKNIREQGRFLQDI
FTTLVDLKWRHTLVIFTMSFLCSWLLFAIMWWLVAFAHGDIYAYMEKSGMEKSGLESTVC
VTNVRSFTSAFLFSIEVQVTIGFGGRMMTEECPLAITVLILQNIVGLIINAVMLGCIFMK
TAQAHRRAETLIFSRHAVIAVRNGKLCFMFRVGDLRKSMIISASVRIQVVKKTTTPEGEV
VPIHQLDIPVDNPIESNNIFLVAPLIICHVIDKRSPLYDISATDLANQDLEVIVILEGVV
ETTGITTQARTSYIAEEIQWGHRFVSIVTEEEGVYSVDYSKFGNTVKVAAPRCSARELDE
KPSILIQTLQKSELSHQNSLRKRNSMRRNNSMRRNNSIRRNNSSLMVPKVQFMTPEGNQN
TSES
GenBank ID Protein 1109634
UniProtKB/Swiss-Prot ID Q15842
UniProtKB/Swiss-Prot Entry Name IRK8_HUMAN
PDB IDs Not Available
GenBank Gene ID D50312
GeneCard ID KCNJ8
GenAtlas ID KCNJ8
HGNC ID HGNC:6269
References
General References
  1. 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. [PubMed:15489334 ]
  2. Olsen JV, Blagoev B, Gnad F, Macek B, Kumar C, Mortensen P, Mann M: Global, in vivo, and site-specific phosphorylation dynamics in signaling networks. Cell. 2006 Nov 3;127(3):635-48. [PubMed:17081983 ]
  3. Imami K, Sugiyama N, Kyono Y, Tomita M, Ishihama Y: Automated phosphoproteome analysis for cultured cancer cells by two-dimensional nanoLC-MS using a calcined titania/C18 biphasic column. Anal Sci. 2008 Jan;24(1):161-6. [PubMed:18187866 ]
  4. Inagaki N, Inazawa J, Seino S: cDNA sequence, gene structure, and chromosomal localization of the human ATP-sensitive potassium channel, uKATP-1, gene (KCNJ8). Genomics. 1995 Nov 1;30(1):102-4. [PubMed:8595887 ]