>tr|D4G0Q8|D4G0Q8_BACNB Putative monovalent cation/H+ antiporter subunit F OS=Bacillus subtilis subsp. natto GN=mrpF MFTLILQIALGIMAVSTFLYVIRVIKGPTVPDRVVALDAIGINLIAITALVSILLKTSAF LDIILLLGILSFIGTIAFSKFLEKGEIIENDRNR