2.A.36.1.20 Endomembrane (Golgi) K+, Na+/H+ exchanger 5, NHX5, of 521 aas and 11 TMSs. Three acidic residues are critical for transport activity as well as seedling growth, regulation of protein transport into vesicles and ionic homeostasis (Qiu 2016). NHX6 is 80% identical to NHX5 (535 aas and 11 TMSs) and serves the same function. They are all located in Golgi, trans-Golgi network (TGN), endoplasmic reticulum (ER) and prevacuolar compartment (PVC). They are critical for salt tolerance stress and the homeostasis of pH and K+ (Wang 2019).
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Accession Number: | Q9SLJ7 |
Protein Name: | Sodium/hydrogen exchanger 5 |
Length: | 521 |
Molecular Weight: | 57335.00 |
Species: | Arabidopsis thaliana (Mouse-ear cress) [3702] |
Number of TMSs: | 11 |
Location1 / Topology2 / Orientation3: |
Endosome membrane1 / Multi-pass membrane protein2 |
Substrate |
sodium(1+), potassium(1+), hydron |
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1: MEEVMISPVE HDPQGQVKQQ QAAGVGILLQ IMMLVLSFVL GHVLRRHRFH YLPEASGSLL
61: IGLIVGILAN ISDTETSIRT WFNFHEEFFF LFLLPPIIFQ SGFSLQPKPF FSNFGAIVTF
121: AIIGTFVASV VTGGLVYLGG SMYLMYKLPF VECLMFGALI SATDPVTVLS IFQDVGTDVN
181: LYALVFGESV LNDAMAISLY RTMSLVNRQS SSGEHFFMVV IRFFETFAGS MSAGVGVGFT
241: SALLFKYAGL DTENLQNLEC CLFVLFPYFS YMLAEGVGLS GIVSILFTGI VMKRYTFSNL
301: SEASQSFVSS FFHLISSLAE TFTFIYMGFD IAMEQHSWSH VGFILFSILF IGVARAVNVF
361: GCAYLVNLFR QENQKIPMKH QKALWYSGLR GAMAFALALQ SLHDLPEGHG QIIFTATTTI
421: VVVTVLLIGG STGKMLEALE VVGDDLDDSM SEGFEESDHQ YVPPPFSIGA SSDEDTSSSG
481: SRFKMKLKEF HKTTTSFTAL DKNFLTPFFT TNSGDGDGDG E