Cations and iron carrying compounds

Potassium-transporting ATPase A chain (Potassium- translocating ATPase A chain, ATP phosphohydrolase [potassium- transporting] A chain, Potassium binding and translocating subunit A) (RefSeq)

hypothetical protein (RefSeq)

potassium:proton antiporter (CPA2 family) (RefSeq)