KCNJ4

KCNJ4 Gene Summary

Several different potassium channels are known to be involved with electrical signaling in the nervous system. One class is activated by depolarization whereas a second class is not. The latter are referred to as inwardly rectifying K+ channels, and they have a greater tendency to allow potassium to flow into the cell rather than out of it. This asymmetry in potassium ion conductance plays a key role in the excitability of muscle cells and neurons. The protein encoded by this gene is an integral membrane protein and member of the inward rectifier potassium channel family. The encoded protein has a small unitary conductance compared to other members of this protein family. Two transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jul 2008]

Details

Type
Protein Coding
Official Symbol
KCNJ4
Official Name
potassium inwardly rectifying channel subfamily J member 4 [Source:HGNC Symbol;Acc:HGNC:6265]
Ensembl ID
ENSG00000168135
Bio databases IDs NCBI: 3761 Ensembl: ENSG00000168135
Aliases potassium inwardly rectifying channel subfamily J member 4
Synonyms
HIR,HIRK2,HRK1,IRK-3,Kcnf2,Kir2.3,MB-IRK3,potassium inwardly rectifying channel subfamily J member 4,potassium inwardly-rectifying channel, subfamily J, member 4
Species
Human, Homo sapiens

Protein Domains

A protein domain is a distinct structural or functional region within a protein that can evolve, function, and exist independently of the rest of the protein chain. These domains often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • inward rectifier potassium channel
  • cytoplasmic domain
  • Inward rectifier potassium channel C-terminal domain
  • Inward rectifier potassium channel transmembrane domain
  • protein binding
  • PDZ binding motif
  • ion channel
  • PDZ-domain binding

Pathways

Biological processes and signaling networks where the KCNJ4 gene plays a role, providing insight into its function and relevance in health or disease.

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
binds
  • LIN7B
  • SNTA1
  • Kcnj2
  • GPR35
  • PRKCD
  • DLG4
  • KCNJ4
  • KCNJ2
  • DLGAP1
  • LIN7C
disease
  • Huntington disease
  • conotruncal heart malformations
regulated by
  • TGFB1
  • SUB1
  • doxorubicin
  • TP53
  • METTL3
  • ASPSCR1-TFE3
  • TP73
  • Immunoglobulin
  • HTT
  • PLAG1
regulates
  • NFkB (complex)
  • K+
role in cell
  • activation in

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Plasma Membrane
  • membrane fraction
  • glutaminergic synapse
  • cellular membrane
  • postsynaptic membrane
  • basolateral membrane
  • perikaryon
  • dendrites
  • detergent-soluble fraction

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the KCNJ4 gene, providing context for its role in the cell.

BIOLOGICAL PROCESS

Functions and activities the gene product is involved in
  • potassium ion transport
  • regulation of ion transmembrane transport

CELLULAR COMPONENT

Where in the cell the gene product is active
  • cytoplasmic vesicle membrane
  • postsynaptic membrane
  • voltage-gated potassium channel complex
  • basolateral plasma membrane
  • plasma membrane

MOLECULAR FUNCTION

What the gene product does at the molecular level
  • protein binding
  • PDZ domain binding
  • inward rectifier potassium channel activity

Gene-Specific Assays for Results You Can Trust

Streamline your workflow with assays designed for this gene. Our targeted dPCR and qPCR assays help you generate meaningful data – efficiently and accurately.