>sp|P29709|ATPE_PROMO ATP synthase epsilon chain, sodium ion specific OS=Propionigenium modestum OX=2333 GN=atpC PE=1 SV=2
MATFKLEVVTPLKKVLDRDAEMVIMRTIEGDMGVMADHAPFVAELAVGEMKIKSANGEEA
YFVSGGFLEISKEKTMILADEAIDVKEIDVERAKREAEIAKETLVKLKEDKDIAVTQKSL
QEALTKVRIAEQYMHHL