Gene: AT5G46240 (Arabidopsis thaliana)

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Gene Identifier
Transcript Identifier
Gene Type
Coding gene
5 : 18743652-18746561 : negative


Gene family
(197 genes in 16 species)
specific family
(5 genes in 3 species)
specific family
Duplication type
Block duplicate

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potassium channel in Arabidopsis thaliana 1
Curated Summary
Encodes a potassium channel protein (KAT1). ABA triggers KAT1 endocytosis both in epidermal cells as well as guard cells. Upon removal of ABA, KAT1 is recycled back to the plasma membrane. KAT1 is localized within 0.5?0.6 μm diameter microdomains at the plasma membrane surface. KAT1 belongs to the Shaker family K+ channel. This family includes five groups based on phylogenetic analysis (FEBS Letters (2007) 581: 2357): I (inward rectifying channel): AKT1 (AT2G26650), AKT5 (AT4G32500) and SPIK (also known as AKT6, AT2G25600); II (inward rectifying channel): KAT1 (AT5G46240) and KAT2 (AT4G18290); III (weakly inward rectifying channel): AKT2 (AT4G22200); IV (regulatory subunit involved in inwardly rectifying conductance formation): KAT3 (also known as AtKC1, AT4G32650); V (outward rectifying channel): SKOR (AT3G02850) and GORK (AT5G37500).
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Identifier Name
aliaspotassium channel in Arabidopsis thaliana 1





Biological Process

GO termEvidence(s)ProviderDescriptionSource
GO:0006813IGI, IEAGene Ontologypotassium ion transport1
GO:0055085IEAInterProtransmembrane transport
GO:0006811IEAInterProion transport

Molecular Function

GO termEvidence(s)ProviderDescriptionSource
GO:0005242IDA, ISS, UniProtinward rectifier potassium channel activity1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
GO:0030551ISSGene Ontologycyclic nucleotide binding1
GO:0005515IPIGene Ontologyprotein binding1
GO:0005249IEAInterProvoltage-gated potassium channel activity
GO:0005216IEAInterProion channel activity
GO:0015079IEAPLAZA Homologypotassium ion transmembrane transporter activityHOM03M000275
GO:0022843IEAPLAZA Homologyvoltage-gated cation channel activityHOM03M000275
GO:0022803IEAPLAZA Homologypassive transmembrane transporter activityHOM03M000275
GO:0022839IEAPLAZA Homologyion gated channel activityHOM03M000275
GO:0005244IEAPLAZA Homologyvoltage-gated ion channel activityHOM03M000275
GO:0005261IEAPLAZA Homologycation channel activityHOM03M000275
GO:0022836IEAPLAZA Homologygated channel activityHOM03M000275
GO:0022838IEAPLAZA Homologysubstrate-specific channel activityHOM03M000275
GO:0022832IEAPLAZA Homologyvoltage-gated channel activityHOM03M000275
GO:0005267IEAPLAZA Homologypotassium channel activityHOM03M000275
GO:0015267IEAPLAZA Homologychannel activityHOM03M000275

Cellular Component

GO termEvidence(s)ProviderDescriptionSource
GO:0005634ISMGene Ontologynucleus1
GO:0005886IDAUniProtplasma membrane1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
GO:0016021IEAUniProtintegral to membrane1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Color Legend

Experimental Evidence
Electronic Evidence
Computational Reviewed Evidence
GO Sources:   Primary     Orthology     Homology  
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InterPro Description
IPR021789Potassium channel, plant-type
IPR000595Cyclic nucleotide-binding domain
IPR005821Ion transport domain
IPR014710RmlC-like jelly roll fold
IPR003938Potassium channel, voltage-dependent, EAG/ELK/ERG
IPR018490Cyclic nucleotide-binding-like

Mapman id Description
No SignalP domains detected for this gene.