Hmdb loader
Identification
HMDB Protein ID HMDBP08737
Secondary Accession Numbers
  • 14460
Name Inward rectifier potassium channel 13
Synonyms
  1. Inward rectifier K(+) channel Kir7.1
  2. Potassium channel, inwardly rectifying subfamily J member 13
Gene Name KCNJ13
Protein Type Unknown
Biological Properties
General Function Involved in inward rectifier potassium channel activity
Specific Function 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. KCNJ13 has a very low single channel conductance, low sensitivity to block by external barium and cesium, and no dependence of its inward rectification properties on the internal blocking particle magnesium
Pathways Not Available
Reactions Not Available
GO Classification
Component
membrane
cell part
Function
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:2
Locus 2q37
SNPs KCNJ13
Gene Sequence
>1083 bp
ATGGACAGCAGTAATTGCAAAGTTATTGCTCCTCTCCTAAGTCAAAGATACCGGAGGATG
GTCACCAAGGATGGCCACAGCACACTTCAAATGGATGGCGCTCAAAGAGGTCTTGCATAT
CTTCGAGATGCTTGGGGAATCCTAATGGACATGCGCTGGCGTTGGATGATGTTGGTCTTT
TCTGCTTCTTTTGTTGTCCACTGGCTTGTCTTTGCAGTGCTCTGGTATGTTCTGGCTGAG
ATGAATGGTGATCTGGAACTAGATCATGATGCCCCACCTGAAAACCACACTATCTGTGTC
AAGTATATCACCAGTTTCACAGCTGCATTCTCCTTCTCCCTGGAGACACAACTCACAATT
GGTTATGGTACCATGTTCCCCAGTGGTGACTGTCCAAGTGCAATCGCCTTACTTGCCATA
CAAATGCTCCTAGGCCTCATGCTAGAGGCTTTTATCACAGGTGCTTTTGTGGCGAAGATT
GCCCGGCCAAAAAATCGAGCTTTTTCAATTCGCTTTACTGACATAGCAGTAGTAGCTCAC
ATGGATGGCAAACCTAATCTTATCTTCCAAGTGGCCAACACCCGACCTAGCCCTCTAACC
AGTGTCCGGGTCTCAGCTGTACTCTATCAGGAAAGAGAAAATGGCAAACTCTACCAGACC
AGTGTGGATTTCCACCTTGATGGCATCAGTTCTGACGAATGTCCATTCTTCATCTTTCCA
CTAACGTACTATCACTCCATTACACCATCAAGTCCTCTGGCTACTCTGCTCCAGCATGAA
AATCCTTCTCACTTTGAATTAGTTGTATTCCTTTCAGCAATGCAGGAGGGCACTGGAGAA
ATATGCCAAAGGAGGACATCCTACCTACCGTCTGAAATCATGTTACATCACTGTTTTGCA
TCTCTGTTGACCCGAGGTTCCAAAGGTGAATATCAAATCAAGATGGAGAATTTTGACAAG
ACTGTCCCTGAATTTCCAACTCCTCTGGTTTCTAAAAGCCCAAACAGGACTGACCTGGAT
ATCCACATCAATGGACAAAGCATTGACAATTTTCAGATCTCTGAAACAGGACTGACAGAA
TAA
Protein Properties
Number of Residues 360
Molecular Weight 40529.2
Theoretical pI 6.23
Pfam Domain Function
Signals
  • None
Transmembrane Regions
  • 54-78
  • 134-155
Protein Sequence
>Inward rectifier potassium channel 13
MDSSNCKVIAPLLSQRYRRMVTKDGHSTLQMDGAQRGLAYLRDAWGILMDMRWRWMMLVF
SASFVVHWLVFAVLWYVLAEMNGDLELDHDAPPENHTICVKYITSFTAAFSFSLETQLTI
GYGTMFPSGDCPSAIALLAIQMLLGLMLEAFITGAFVAKIARPKNRAFSIRFTDTAVVAH
MDGKPNLIFQVANTRPSPLTSVRVSAVLYQERENGKLYQTSVDFHLDGISSDECPFFIFP
LTYYHSITPSSPLATLLQHENPSHFELVVFLSAMQEGTGEICQRRTSYLPSEIMLHHCFA
SLLTRGSKGEYQIKMENFDKTVPEFPTPLVSKSPNRTDLDIHINGQSIDNFQISETGLTE
GenBank ID Protein 3650320
UniProtKB/Swiss-Prot ID O60928
UniProtKB/Swiss-Prot Entry Name IRK13_HUMAN
PDB IDs Not Available
GenBank Gene ID AJ007557
GeneCard ID KCNJ13
GenAtlas ID KCNJ13
HGNC ID HGNC:6259
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. Partiseti M, Collura V, Agnel M, Culouscou JM, Graham D: Cloning and characterization of a novel human inwardly rectifying potassium channel predominantly expressed in small intestine. FEBS Lett. 1998 Aug 28;434(1-2):171-6. [PubMed:9738472 ]
  3. Krapivinsky G, Medina I, Eng L, Krapivinsky L, Yang Y, Clapham DE: A novel inward rectifier K+ channel with unique pore properties. Neuron. 1998 May;20(5):995-1005. [PubMed:9620703 ]
  4. Derst C, Doring F, Preisig-Muller R, Daut J, Karschin A, Jeck N, Weber S, Engel H, Grzeschik KH: Partial gene structure and assignment to chromosome 2q37 of the human inwardly rectifying K+ channel (Kir7.1) gene (KCNJ13). Genomics. 1998 Dec 15;54(3):560-3. [PubMed:9878260 ]
  5. Hejtmancik JF, Jiao X, Li A, Sergeev YV, Ding X, Sharma AK, Chan CC, Medina I, Edwards AO: Mutations in KCNJ13 cause autosomal-dominant snowflake vitreoretinal degeneration. Am J Hum Genet. 2008 Jan;82(1):174-80. doi: 10.1016/j.ajhg.2007.08.002. [PubMed:18179896 ]