2.A.37.4.8
Endoplasmic reticular K+/H+ antiporter, CHX20. Maintains pH and K+ homeostasis in guard cells. Plays a critical role
in osmoregulation through the control of stomates opening. Regulates alkaline pH-sensitive growth and influences membrane trafficking (Chanroj et al. 2011).
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| Accession Number: | Q9M353 |
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| Protein Name: | Cation/H(+) antiporter 20 |
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| Length: | 842 |
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| Molecular Weight: | 91553.00 |
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| Species: | Arabidopsis thaliana (Mouse-ear cress) [3702] |
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| Number of TMSs: | 11 |
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| Location1 / Topology2 / Orientation3: |
Endomembrane system1 / Multi-pass membrane protein2 |
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| Substrate |
potassium(1+), hydron |
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1: MPFNITSVKT SSNGVWQGDN PLNFAFPLLI VQTALIIAVS RFLAVLFKPL RQPKVIAEIV
61: GGILLGPSAL GRNMAYMDRI FPKWSMPILE SVASIGLLFF LFLVGLELDL SSIRRSGKRA
121: FGIAVAGITL PFIAGVGVAF VIRNTLYTAA DKPGYAEFLV FMGVALSITA FPVLARILAE
181: LKLLTTQIGE TAMAAAAFND VAAWILLALA VALAGNGGEG GGEKKSPLVS LWVLLSGAGF
241: VVFMLVVIRP GMKWVAKRGS PENDVVRESY VCLTLAGVMV SGFATDLIGI HSIFGAFVFG
301: LTIPKDGEFG QRLIERIEDF VSGLLLPLYF ATSGLKTDVA KIRGAESWGM LGLVVVTACA
361: GKIVGTFVVA VMVKVPAREA LTLGFLMNTK GLVELIVLNI GKEKKVLNDE TFAILVLMAL
421: FTTFITTPTV MAIYKPARGT HRKLKDLSAS QDSTKEELRI LACLHGPANV SSLISLVESI
481: RTTKILRLKL FVMHLMELTE RSSSIIMVQR ARKNGLPFVH RYRHGERHSN VIGGFEAYRQ
541: LGRVAVRPIT AVSPLPTMHE DICHMADTKR VTMIILPFHK RWNADHGHSH HHQDGGGDGN
601: VPENVGHGWR LVNQRVLKNA PCSVAVLVDR GLGSIEAQTL SLDGSNVVER VCVIFFGGPD
661: DRESIELGGR MAEHPAVKVT VIRFLVRETL RSTAVTLRPA PSKGKEKNYA FLTTNVDPEK
721: EKELDEGALE DFKSKWKEMV EYKEKEPNNI IEEILSIGQS KDFDLIVVGR GRIPSAEVAA
781: LAERQAEHPE LGPIGDVLAS SINHIIPSIL VVQQHNKAHV EDITVSKIVS ESSLSINGDT
841: NV