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Gene : KT2/3 A. thaliana

DB identifier  ? AT4G22200 Secondary Identifier  ? locus:2132065
Name  ? potassium transport 2/3 Brief Description  potassium transport 2/3
TAIR Computational Description  potassium transport 2/3;(source:Araport11)
TAIR Curator Summary  Encodes AKT2, a photosynthate- and light-dependent inward rectifying potassium channel with unique gating properties that are regulated by phosphorylation. Expressed in guard cell protoplasts and in the phloem and xylem of aerial portions of the plant. The channel can coassemble with another K+ channel, KAT1, in vitro. In guard cells, AKT2/3 is responsible for the Ca2+ sensitivity of the K+ uptake channel. In the phloem, it regulates the sucrose/H+ symporters via the phloem potential. AKT2 belongs to the Shaker family K+ channels which include the following 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).
TAIR Short Description  potassium transport 2/3
TAIR Aliases  AKT2, AKT2/3, AKT3, KT2/3

8 Gene Rifs

Trail: Gene

1 Organism

Trail: Gene

41 Publications

Trail: Gene

0 Synonyms

Genomics

Genome feature

Region: gene ? Length: 4209  
Location: Chr4:11746490-11750698 reverse strand

Gene models - KT2/3 AT4G22200

? Gene models

Transcripts: 2  Exons: 19  Introns: 17 

Overlapping Features

? Genome features that overlap coordinates of this Gene

14 Child Features

Trail: Gene

1 Cross References

Trail: Gene

1 Downstream Intergenic Region

Trail: Gene

0 Located Features

1 Upstream Intergenic Region

Trail: Gene

Proteins

Curated comments from UniProt

Type Comment Proteins
AKT2_ARATH function Highly selective and weak inward-rectifying potassium channel. Plays a role in both loading and unloading potassium into/from the phloem sap. Seems to control sugar loading into phloem via a voltage-dependent process. Blocked by physiological concentrations of external calcium and by external acidification. May interact with the cytoskeleton or with regulatory proteins. Dephosphorylation by PP2CA not only leads to the inhibition of potassium currents but also to an increase of the voltage-dependence of the channel. Regulated by the CBL4/CIPK6 calcium sensor/protein kinase complex via a kinase interaction-dependent but phosphorylation-independent translocation of the channel to the plasma membrane.
A0A1P8B652_ARATH function Potassium channel.
AKT2_ARATH A0A1P8B652_ARATH similarity Belongs to the potassium channel family. Plant (TC 1.A.1.4) subfamily.
AKT2_ARATH subcellular location Targeted to the cell membrane when interacting with CIPK6 and CBL4.
AKT2_ARATH tissue specificity Expressed mainly in the phloem tissues throughout the plant but also, at a lower level, in leaf epiderm, mesophyll and guard cells.

2 Proteins

Trail: Gene

Function

Gene Ontology

cellular component
plasmodesma  ? ECO  
endoplasmic reticulum membrane  ? ECO  
monoatomic ion channel complex  ? ECO  
molecular function
identical protein binding  ? ECO  
voltage-gated potassium channel activity  ? ECO  
biological process
response to abscisic acid  ? ECO  
regulation of membrane potential  ? ECO  

Interactions

Interaction Network

Expression

eFP Visualization

Data Source: BAR




Co-expression

Querying ATTED Service...
Data Source: ATTED-II
Top N
LS: LS is a monotonic transformation (negative logit) of MR index. Larger LS indicates stronger co-expression.

 

Homology

Phytozome Homologs

Data Source: Phytozome


0 Homologues

 

Other

9 Data Sets

Trail: Gene