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monovalent cation/proton antiporter, MnhG/PhaG subunit This model represents a subfamily of small, transmembrane proteins believed to be components of Na+/H+ and K+/H+ antiporters. Members, including proteins designated MnhG from Staphylococcus aureus and PhaG from Rhizobium meliloti, show some similarity to chain L of the NADH dehydrogenase I, which also translocates protons. [Transport and binding proteins, Cations and iron carrying compounds]
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