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chaA

Gene
chaA
Protein
Sodium-potassium/proton antiporter ChaA
Organism
Escherichia coli (strain K12)
Length
366 amino acids
Function
Sodium exporter that functions mainly at alkaline pH. Can also function as a potassium/proton and calcium/proton antiporter at alkaline pH. Does not play a major role in calcium export.
Similarity
Belongs to the Ca(2+):cation antiporter (CaCA) (TC 2.A.19) family.
Mass
39.168 kDa
Sequence
MSNAQEAVKTRHKETSLIFPVLALVVLFLWGSSQTLPVVIAINLLALIGILSSAFSVVRHADVLAHRLGEPYGSLILSLSVVILEVSLISALMATGDAAPTLMRDTLYSIIMIVTGGLVGFSLLLGGRKFATQYMNLFGIKQYLIALFPLAIIVLVFPMALPAANFSTGQALLVALISAAMYGVFLLIQTKTHQSLFVYEHEDDSDDDDPHHGKPSAHSSLWHAIWLIIHLIAVIAVTKMNASSLETLLDSMNAPVAFTGFLVALLILSPEGLGALKAVLNNQVQRAMNLFFGSVLATISLTVPVVTLIAFMTGNELQFALGAPEMVVMVASLVLCHISFSTGRTNVLNGAAHLALFAAYLMTIFA

Gene
chaA
Protein
Ca(2+)/H(+) antiporter ChaA
Organism
Bacillus subtilis (strain 168)
Length
351 amino acids
Function
Ca(+)/H(+) antiporter that extrudes calcium in exchange for external protons. Does not transport sodium or potassium.
Similarity
Belongs to the Ca(2+):cation antiporter (CaCA) (TC 2.A.19) family. Cation/proton exchanger (CAX) subfamily.
Mass
37.522 kDa
Sequence
MNRIFFILVAAGVPLSVIGSLMHWPSAVLFAVYCVTIIALASYMGRATESLSIIAGPRIGGLLNATFGNAVELIISLFALKEGLTGIVLASLTGSVLGNLLLVAGLSFFVGGLKYKRQEFNIHDARHNSGLLIFAIIVAFVIPEVFSVGMGNASKLNLSIGISIIMILLYVAALYFKLVTHRGVYQPNNAAQTEEEEEPEWSGKVATIVLFAATIVVAYISENLVHTFHSVAEQFGWSELFIGVIIVAIVGNAAEHASAIIMAFKNKMDIAVEIAVGSTLQIAMFVAPVLVICSIFFPTSMPLVFTLPELVAMVSAVLLMIAISNDGDSNWFEGATLLAAYVIMAIGFFLL