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Multiple resistance and pH regulation protein F (MrpF / PhaF) Members of the PhaF / MrpF family are predicted to be an integral membrane proteins with three transmembrane regions, involved in regulation of pH. PhaF is part of a potassium efflux system involved in pH regulation. It is also involved in symbiosis in Rhizobium meliloti. MrpF is part of a Na+/H+ antiporter complex, also involved in pH homeostasis. MrpF is thought to be an efflux system for Na+ and cholate. The Mrp system in Bacilli may also have primary energisation capacities. |
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