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2.A.37.4.5
Cation/H(+) antiporter 23, chloroplastic (Protein CATION/H+ EXCHANGER 23) (AtCHX23)

Accession Number:Q8VYD4
Protein Name:Cation/H(+) antiporter 23, chloroplastic
Length:867
Molecular Weight:95867.00
Species:Arabidopsis thaliana (Mouse-ear cress) [3702]
Number of TMSs:14
Location1 / Topology2 / Orientation3: Plastid1 / Multi-pass membrane protein2
Substrate cations, H+

Cross database links:

Genevestigator: Q8VYD4
eggNOG: COG0475
HEGENOM: HOG000131548
Entrez Gene ID: 837063   
Pfam: PF00999   
KEGG: ath:AT1G05580   

Gene Ontology

GO:0031969 C:chloroplast membrane
GO:0005783 C:endoplasmic reticulum
GO:0005789 C:endoplasmic reticulum membrane
GO:0016021 C:integral to membrane
GO:0015299 F:solute:hydrogen antiporter activity
GO:0010183 P:pollen tube guidance
GO:0071805 P:potassium ion transmembrane transport

References (7)

[1] “Sequence and analysis of chromosome 1 of the plant Arabidopsis thaliana.”  Theologis A.et.al.   11130712
[2] “Empirical analysis of transcriptional activity in the Arabidopsis genome.”  Yamada K.et.al.   14593172
[3] “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
[4] “Phylogenetic relationships within cation transporter families of Arabidopsis.”  Maeser P.et.al.   11500563
[5] “A probable Na+(K+)/H+ exchanger on the chloroplast envelope functions in pH homeostasis and chloroplast development in Arabidopsis thaliana.”  Song C.P.et.al.   15220473
[6] “Pollen tubes lacking a pair of K+ transporters fail to target ovules in Arabidopsis.”  Lu Y.et.al.   21239645
[7] “The roles of the cation transporters CHX21 and CHX23 in the development of Arabidopsis thaliana.”  Evans A.R.et.al.   21976771

External Searches:

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  • 2° Structure (Network Protein Sequence Analysis)

Analyze:

Predict TMSs (Predict number of transmembrane segments)
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FASTA formatted sequence
1:	MSSGAPLNVT NPNYDIEESR FGKIVCYDQS LLFEKREQKG WESGSTLASS LPFFITQLFV 
61:	ANLSYRVLYY LTRPLYLPPF VAQILCGLLF SPSVLGNTRF IIAHVFPYRF TMVLETFANL 
121:	ALVYNIFLLG LGMDLRMVRI TELKPVIIAF TGLLVALPVG AFLYYLPGNG HPDKIISGCV 
181:	FWSVALACTN FPDLARILAD LKLLRSDMGR TAMCAAIVTD LCTWVLLVFG FASFSKSGTW 
241:	NKMMPFVIIT TAIFVLLCIF VIRPGIAWIF AKTVKAGHVG DTHVWFILGG VVLCGLITDA 
301:	CGVHSITGAF LFGLSIPHDH IIRNMIEEKL HDFLSGILMP LFYIICGLRA DIGFMLQFTD 
361:	KFMMVVVICS SFLVKIVTTV ITSLFMHIPM RDAFAIGALM NTKGTLSLVV LNAGRDTKAL 
421:	DSPMYTHMTI ALLVMSLVVE PLLAFAYKPK KKLAHYKHRT VQKIKGETEL RVLACVHVLP 
481:	NVSGITNLLQ VSNATKQSPL SVFAIHLVEL TGRTTASLLI MNDECKPKAN FSDRVRAESD 
541:	QIAETFEAME VNNDAMTVQT ITAVSPYATM HEDICVLAED KRVCFIILPY HKHLTPDGRM 
601:	GEGNSSHAEI NQNVLSHAPC SVGILVDRGM AMVRSESFRG ESMKREVAML FVGGPDDREA 
661:	LSYAWRMVGQ HVIKLTVVRF VPGREALISS GKVAAEYERE KQVDDECIYE FNFKTMNDSS 
721:	VKYIEKVVND GQDTIATIRE MEDNNSYDLY VVGRGYNSDS PVTAGLNDWS SSPELGTIGD 
781:	TLASSNFTMH ASVLVIQQYS ATKRQAAVTA AAATTVMGAV AGVTGNNLES AGGDAKMTRD 
841:	AHEPFMKSMY EDEDEDDEED HQYGIHR