KCNN2 Gene Summary [Human]

Action potentials in vertebrate neurons are followed by an afterhyperpolarization (AHP) that may persist for several seconds and may have profound consequences for the firing pattern of the neuron. Each component of the AHP is kinetically distinct and is mediated by different calcium-activated potassium channels. The protein encoded by this gene is activated before membrane hyperpolarization and is thought to regulate neuronal excitability by contributing to the slow component of synaptic AHP. This gene is a member of the KCNN family of potassium channel genes. The encoded protein is an integral membrane protein that forms a voltage-independent calcium-activated channel with three other calmodulin-binding subunits. Alternate splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2013]

Details

Type
Processed Transcript
Official Symbol
KCNN2
Official Name
potassium calcium-activated channel subfamily N member 2 [Source:HGNC Symbol;Acc:HGNC:6291]
Ensembl ID
ENSG00000080709
Bio databases IDs NCBI: 3781 Ensembl: ENSG00000080709
Aliases potassium calcium-activated channel subfamily N member 2, small conductance calcium-activated potassium channel 2
Synonyms bc, DYT34, fri, hSK2, KCa2.2, LOC100910229, LOC101927041, LOC103690147, NEDMAB, potassium calcium-activated channel subfamily N member 2, potassium intermediate/small conductance calcium-activated channel, subfamily N, member 2, SK2, SKCA2
Species
Human, Homo sapiens
OrthologiesMouseRat

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 in human KCNN2 often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • Calcium-activated SK potassium channel
  • inward rectifier potassium channel
  • calmodulin binding
  • small conductance calcium-activated potassium channel
  • actinin binding
  • calmodulin binding domain
  • calcium-activated potassium channel
  • alpha helix
  • protein domain specific binding
  • protein binding
  • ion channel
  • Prefoldin subunit
  • prefoldin
  • protein homodimerization
  • cytosolic tail domain
  • loop domain

Pathways

Biological processes and signaling networks where the KCNN2 gene in human 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.
disease
  • liver cancer
  • epithelial cancer
  • hereditary disorder
  • atrial fibrillation
  • coronary aneurysm
  • hepatocellular carcinoma
  • Alzheimer disease
  • cardioembolic stroke
  • neurodevelopmental disorder with or without variable movement or behavioral abnormalities
  • bipolar disorder
regulated by
regulates
  • K+
role in cell
  • action potential
  • excitation
  • excitability
  • plasticity
  • intrinsic neuronal plasticity
  • afterhyperpolarization

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
  • cell surface
  • cellular membrane
  • Endoplasmic Reticulum
  • intramembrane particles
  • postsynaptic membrane
  • dendritic spines
  • synaptic vesicles
  • sarcolemma
  • Z line
  • smooth endoplasmatic reticulum
  • transverse tubules
  • perikaryon
  • dendritic branches

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the human KCNN2 gene, providing context for its role in the cell.

Biological Process

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

Cellular Component

Where in the cell the gene product is active
  • Z disc
  • dendritic spine
  • membrane
  • neuronal cell body
  • plasma membrane
  • cell surface

Molecular Function

What the gene product does at the molecular level
  • calcium-activated potassium channel activity
  • protein domain specific binding
  • calmodulin binding
  • protein homodimerization activity
  • protein binding
  • inward rectifier potassium channel activity
  • small conductance calcium-activated potassium channel activity
  • alpha-actinin binding

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.