FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

potassium channel activity

ID (Ontology)

GO:0005267 (Gene Ontology)

Definition

Enables the energy-independent facilitated diffusion of a potassium ion through a transmembrane aqueous pore or channel.[ ISBN:0815340729 ]

Comment

Links to External Ontologies

QuickGO data AmiGO data

Annotations

Records annotated with this term OR any of its CHILD TERMS

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Direct annotations: records annotated with this exact term (child terms are NOT included)

Data Class	Field	Direct annotations
Genes (FBgn)	GO_MOLECULAR_FUNCTION

Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

Full annotation statements	Relevant FlyBase reports
Full annotation statements	Gene Groups	Genes
potassium channel activity (all annotations which use CV term, excluding "NOT" statements)
enables \| potassium channel activity	--

Spanning Tree (Parents/Children)

monoatomic ion channel activity
 |__monoatomic cation channel activity________________
monoatomic cation transmembrane transporter activity  |
 |__monoatomic cation channel activity________________|
metal ion transmembrane transporter activity          |
 |__potassium ion transmembrane transporter activity__|
                                                      potassium channel activity  46 rec.
                                                       |__calcium-activated potassium channel activity 6 rec.
                                                       |   |__intermediate conductance calcium-activated potassium channel activity
                                                       |   |__large conductance calcium-activated potassium channel activity 2 rec.
                                                       |   |__small conductance calcium-activated potassium channel activity 2 rec.
                                                       |__chloride-activated potassium channel activity
                                                       |__G-protein gated potassium channel activity
                                                       |__intracellular sodium-activated potassium channel activity 2 rec.
                                                       |__kainate selective glutamate receptor activity 9 rec.
                                                       |__mechanosensitive potassium channel activity
                                                       |__mitochondrial ATP-gated potassium channel activity
                                                       |__potassium ion leak channel activity 11 rec.
                                                       |__voltage-gated potassium channel activity 27 rec.
                                                           |__delayed rectifier potassium channel activity 4 rec.
                                                           |__inward rectifier potassium channel activity(+) 5 rec.
                                                           |__open rectifier potassium channel activity
                                                           |__outward rectifier potassium channel activity(+) 13 rec.
                                                           |__voltage-gated potassium channel activity involved in cardiac muscle cell action potential repolarization(+)
                                                           |__voltage-gated potassium channel activity involved in SA node cell action potential depolarization

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Relationships
Is a	monoatomic cation channel activity potassium ion transmembrane transporter activity
Part of
Synonyms & Secondary IDs
Synonyms

Secondary IDs

External Crossreferences & Linkouts
	Reactome:R-HSA-1296024 "Activation of ATP sensitive Potassium channels in neuroendocrine cells" Reactome:R-HSA-1296035 "Activation of Ca2+ activated Potassium channels with Intermediate conductance" Reactome:R-HSA-1296037 "Activation of Ca2+ activated Potassium channels with large conductance" Reactome:R-HSA-1296039 "Activation of Ca2+ activated Potassium channels with small conductance" Reactome:R-HSA-1296348 "Activation of TWIK-related K+ channel (TREK)" Reactome:R-HSA-1299297 "Activation of THIK" Reactome:R-HSA-1299304 "Activation of tandem pore domain in a weak inwardly rectifying K+ channels" Reactome:R-HSA-1299318 "Activation of TASK" Reactome:R-HSA-1299338 "Activation of TRESK" Reactome:R-HSA-1299359 "Activation of TALK" Reactome:R-HSA-2534365 "Slo3 Potassium Transport" Reactome:R-HSA-5578910 "KCNK dimers transport K+ from cytosol to extracellular region"