>sp|A8G6V4|ATPF2_PROM2 ATP synthase subunit b' OS=Prochlorococcus marinus GN=atpF2 MLAFNFFGATEGGLFDINATLPLMAIQVVALTYILNSLFFKPVGKVVEKREKFVSDNIIE AKNKLSEVEKLEADLLTQLQSARTEAQRIVSEAENESDKLYKEALELANNEANASKEKAR LEIESQTSAARDQLSKQADDLSELIVNRLILEK