Protein
Magnesium/proton exchanger
Organism
Arabidopsis halleri subsp. halleri
Function
Vacuolar transporter that exchanges protons with Mg(2+), Zn(2+) and Fe(2+) ions. May control the partitioning of Mg(2+) and Zn(2+) between plant organs. Could play a role in Zn(2+) accumulation or tolerance.
Similarity
Belongs to the Ca(2+):cation antiporter (CaCA) (TC 2.A.19) family. MHX subfamily.
Sequence
MASILNQTQELQEASKVLGHVRCENFFIFPGENTLSDGLRGVLYFLGLAYCFIGLSAITARFFKSMENVVKHSRKVVAIDPITKAEIITYKKVWNFTIADISLLAFGTSFPQISLATIDAIRNIGERYAGGLGPGTLVGSAAFDLFPIHAVCVVVPKAGELKKISDLGVWLVELVWSFWAYIWLYIILEVWSPNVITLVEALLTVLQYGLLLVHAYAQDKRWPYLSLPMSRGDRPEEWVPEEIDTSKDDNDNDVHDVYSDAAQEAVESGSRNIVDIFSIHSANNDTGITYHTVADTPPDSATKKGKAKNSSVFDIWKHQFVDAITLETSESKKVDSIYLRIANSFWQLLLAPWKLLFAFVPPCNIAHGWIAFIFSLLFISGVAFVVTRFTDLISCVTGINPYVIAFTALASGTSWPDLVASKIAAERQLTADSAIANITCSNSVNIYVGIGVPWLINTVYNYFAYREPLYIENAKGLSFSLLIFFATSVGCIVVLVLRRLIIGAELGGPRLWAWLTSAYFMMLWVVFVVLSSLKVSGVI