Na(+)/H(+) antiporter that extrudes sodium in exchange for external protons (By similarity). nhaA Na(+)/H(+) antiporter nhaA Sodium/proton antiporter nhaA NHAA_STRAT MAAPRTPNTARKVLGRLSLPERTFVADALRTETVGGVLLLVATVTALVWANIPALQHSYEAVSHFHFGPSALGLNLSVAHWAADGLLAVFFFVAGIELKRELVAGDLRDPRAAVLPVVAALCGMAVPALVYTLTNLTGHGSTQGWAVPTATDIAFALAVLAVIGTSLPSALRAFLLTLAVVDDLFAILIIAIFFTERINFAALGGAVAGLAVFWLLLRKGVRGWYVYVPLAVVVWALMYNSGVHATIAGVAMGLMLRCTTREGEEHSPGEHIEHLVRPLSAGLAVPLFALFSAGVVVSGGALGDVFTEPETLGVVLGLVVGKTLGIFGSTWLTARFTHAELSEDLEWADIFAVASLAGIGFTVSLLIGELAFAGDTLLTDEVKAAVLTGSLIAALCATVLLKIRNARYRGLCEDEERDEDRDGIPDVYEQDDPAYHLRMADIFERKAAEHRRIAAEKAAAARHGGAEVPGGAGEEDGRPA 480