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2.A.37.4.3
Plasma membrane K+ uptake transporter, CHX13 (Km ≈ 150μM; expressed in roots) (Zhao et al., 2008)

Accession Number:O22920
Protein Name:CHX3
Length:831
Molecular Weight:92189.00
Species:Arabidopsis thaliana (Mouse-ear cress) [3702]
Number of TMSs:14
Location1 / Topology2 / Orientation3: Cell membrane1 / Multi-pass membrane protein2
Substrate K+

Cross database links:

Genevestigator: O22920
eggNOG: KOG1650
HEGENOM: HBG732777
RefSeq: NP_180583.1   
Entrez Gene ID: 817574   
Pfam: PF00999   
KEGG: ath:AT2G30240   

Gene Ontology

GO:0016021 C:integral to membrane
GO:0005886 C:plasma membrane
GO:0015079 F:potassium ion transmembrane transporter act...
GO:0015299 F:solute:hydrogen antiporter activity
GO:0006813 P:potassium ion transport
GO:0055085 P:transmembrane transport

References (3)

[1] “Expression patterns of a novel AtCHX gene family highlight potential roles in osmotic adjustment and K+ homeostasis in pollen development.”  Sze H.et.al.   15347787
[2] “AtCHX13 is a Plasma Membrane K+ Transporter.”  Zhao J.et.al.   18676662
[3] “Sequence and analysis of chromosome 2 of the plant Arabidopsis thaliana.”  Lin X.et.al.   10617197

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)
Window Size: Angle:  
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FASTA formatted sequence
1:	MELSMFGRED TNSSQWGEVH GPFMLEEIVC QAQNMLTSRG IFMKSNPLKY ALPLLLLQMS 
61:	VIIVTSRLIF RVLQPLKQGM ISAQVLTGVV LGPSFLGHNV IYMNMFLPAG GKIIIQTLSN 
121:	VGFVIHLFLL GLKIDGSIIR KAGSKAILIG TASYAFPFSL GNLTIMFISK TMGLPSDVIS 
181:	CTSSAISLSS MTSFPVTTTV LAELNILNSE LGRLATHCSM VCEVCSWFVA LAFNLYTRDR 
241:	TMTSLYALSM IIGLLLVIYF VFRPIIVWLT QRKTKSMDKK DVVPFFPVLL LLSIASLSGE 
301:	AMGVHAAFGA FWLGVSLPDG PPLGTELAAK LEMFASNLFL PCFIAISGLQ TNFFEITESH 
361:	EHHVVMIEII LLITYGCKFL GTAAASAYCQ TQIGDALCLA FLMCCQGIIE VYTTIVWKDA 
421:	QVVDTECFNL VIITILFVTG ISRFLVVYLY DPSKRYKSKS KRTILNTRQH NLQLRLLLGL 
481:	YNVENVPSMV NLLEATYPTR FNPISFFTLH LVELKGRAHA LLTPHHQMNK LDPNTAQSTH 
541:	IVNAFQRFEQ KYQGALMAQH FTAAAPYSSI NNDICTLALD KKATLIVIPF HKQYAIDGTV 
601:	GQVNGPIRTI NLNVLDAAPC SVAIFIDRGE TEGRRSVLMT NTWQNVAMLF IGGKDDAEAL 
661:	ALCMRMAEKP DLNVTMIHFR HKSALQDEDY SDMSEYNLIS DFKSYAANKG KIHYVEEIVR 
721:	DGVETTQVIS SLGDAYDMVL VGRDHDLESS VLYGLTDWSE CPELGVIGDM LTSPDFHFSV 
781:	LVVHQQQGDD LLAMDDSYKL PNVEHQKIGD TGIQQRFSAE EGFTTIDLGK R