BC037290
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UniProt Secondary Accession #
UniProt Related Accession #
Molecular Weight
10,980 Da
NCBI Official Full Name
Homo sapiens potassium inwardly-rectifying channel, subfamily J, member 13, mRNA
NCBI Official Synonym Full Names
potassium voltage-gated channel subfamily J member 13
NCBI Protein Information
inward rectifier potassium channel 13
UniProt Protein Name
Inward rectifier potassium channel 13
UniProt Synonym Protein Names
Inward rectifier K(+) channel Kir7.1; Potassium channel, inwardly rectifying subfamily J member 13
UniProt Entry Name
KCJ13_HUMAN
NCBI Summary for KCNJ13
This gene encodes a member of the inwardly rectifying potassium channel family of proteins. Members of this family form ion channel pores that allow potassium ions to pass into a cell. The encoded protein belongs to a subfamily of low signal channel conductance proteins that have a low dependence on potassium concentration. Mutations in this gene are associated with snowflake vitreoretinal degeneration. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Feb 2010]
UniProt Comments for KCNJ13
KCNJ13: 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. Defects in KCNJ13 are the cause of snowflake vitreoretinal degeneration (SVD). SVD is a developmental and progressive hereditary eye disorder that affects multiple tissues within the eye. Diagnostic features of SVD include fibrillar degeneration of the vitreous humor, early-onset cataract, minute crystalline deposits in the neurosensory retina, and retinal detachment. Defects in KCNJ13 are the cause of Leber congenital amaurosis type 16 (LCA16). LCA16 is a severe dystrophy of the retina, typically becoming evident in the first years of life. Visual function is usually poor and often accompanied by nystagmus, sluggish or near-absent pupillary responses, photophobia, high hyperopia and keratoconus. Belongs to the inward rectifier-type potassium channel (TC 1.A.2.1) family. KCNJ13 subfamily. 2 isoforms of the human protein are produced by alternative splicing.
Protein type: Membrane protein, multi-pass; Membrane protein, integral; Channel, potassium
Chromosomal Location of Human Ortholog: 2q37
Cellular Component: integral to plasma membrane
Molecular Function: inward rectifier potassium channel activity
Biological Process: potassium ion import
Disease: Leber Congenital Amaurosis 16; Vitreoretinal Degeneration, Snowflake Type
Research Articles on KCNJ13
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Pathways associated with KCNJ13 cdna clone
Diseases associated with KCNJ13 cdna clone
Organs/Tissues associated with KCNJ13 cdna clone
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