>sp|P29706|ATPA_PROMO ATP synthase alpha chain, sodium ion specific (EC 3.6.3.15) - Propionigenium modestum. MKIRPEEISGIIKTEIENYKKSLDVKTSGSVVQVGDGIARIYGLSNAKAGELLEFPNGITGMALNLEENNVGAVILGDPT GVKEGDEVRATGQIAAVGAGEALLGRVVNSLGEPIDGKGELKTEKMMPLDRKAYGIISRKPVHEPLQTGIKSIDGMVPIG RGQRELIIGDRQTGKTAVALDAIINQKDTGVKCIYVAIGQKRSTVAQIVKRLEDAGALEYTIVVAATASESAPLQYMAPY TGVSMGEYFMDKGEHVLIVYDDLSKHAVAYREMSLLLKRPPGREAFPGDVFYLHSRLLERAAKLSDEIGAGSITALPIIE TQAGDVSAYIPTNVISITDGQIFLDSQLFNSGFRPAINAGISVSRVGGAAQIKAMKQVAAQVKLELAQYNELLTFAQFGS DLDKATLAQLERGHRIMEILKQEQYKPFVVEEQVVSFFTVINGYLDDIAIDQVRRFEKELLEELKDNTTILAEIVEKKAI KEDLDAKLRKAIEDFKKKFS