Entrez Summary: 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 Summary: 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.
Pfam DomainsGO Terms
Pfam Domains
IRK
GO Terms
inward rectifier potassium channel activity
potassium ion import across plasma membrane
inorganic cation import across plasma membrane
inorganic ion import across plasma membrane
import across plasma membrane
potassium ion transmembrane transport
potassium ion transport
monovalent inorganic cation transport
regulation of ion transmembrane transport
inorganic cation transmembrane transport
regulation of transmembrane transport
cation transmembrane transport
metal ion transport
inorganic ion transmembrane transport
import into cell
regulation of ion transport
cation transport
ion transmembrane transport
transmembrane transport
ion transport
regulation of transport
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)