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1.A.1.7.6
Potassium inward rectifier (Kir)-like channel 3 (AtKCO3)

Accession Number:Q9XFR0
Protein Name:Potassium inward rectifier (Kir)-like channel 3
Length:260
Molecular Weight:29108.00
Species:Arabidopsis thaliana (Mouse-ear cress) [3702]
Number of TMSs:4
Location1 / Topology2 / Orientation3: Vacuole membrane1 / Multi-pass membrane protein2
Substrate K+

Cross database links:

Genevestigator: Q9XFR0
eggNOG: KOG1418
HEGENOM: HOG000238193
Entrez Gene ID: 834679   
Pfam: PF07885   
KEGG: ath:AT5G46360   

Gene Ontology

GO:0016021 C:integral to membrane
GO:0009705 C:plant-type vacuole membrane
GO:0005509 F:calcium ion binding
GO:0005267 F:potassium channel activity
GO:0051260 P:protein homooligomerization

References (4)

[1] “Structural analysis of Arabidopsis thaliana chromosome 5. V. Sequence features of the regions of 1,381,565 bp covered by twenty one physically assigned P1 and TAC clones.”  Kaneko T.et.al.   9679202
[2] “Phylogenetic relationships within cation transporter families of Arabidopsis.”  Maeser P.et.al.   11500563
[3] “Members of the Arabidopsis AtTPK/KCO family form homomeric vacuolar channels in planta.”  Voelker C.et.al.   16984403
[4] “TPK1, a Ca(2+)-regulated Arabidopsis vacuole two-pore K(+) channel is activated by 14-3-3 proteins.”  Latz A.et.al.   17764516

External Searches:

  • Search: DB with
  • BLAST ExPASy (Swiss Institute of Bioinformatics (SIB) BLAST)
  • CDD Search (Conserved Domain Database)
  • Search COGs (Clusters of Orthologous Groups of proteins)
  • 2° Structure (Network Protein Sequence Analysis)

Analyze:

Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MPMTPSEFKN RLLFGSLPRS SSDPTDLQFT EPNVPPSLFS LPEHNDDTAT DMAPDQETEQ 
61:	SVSKSIARQA LALLVVYLSL GVLIYWLTLD SDNAYQTHPV AVALYFFVVT FCGFLIVHFV 
121:	VKIGWLDSFC FSVMMVTTVG FGDRAFNTWL GTFLAAVWLL VSTLAVARAF LFLADARADK 
181:	RNRERAKKVL GESISISQFF AADIDNDGRL SLAEFAIYKL KQMEKITQED FIQICNQFDK 
241:	LDRTQSGRIT LVDLTTATSV