>sp|A2BT28|ATPF2_PROMS ATP synthase subunit b' OS=Prochlorococcus marinus GN=atpF2 MLAFNFFGATEGGLFDINATLPLMAIQVVALTYILNSLFFKPVGNVVEKREKFVSNNIIE AKNKLSEVKKLEADLLTQLQSARTEAQRIVSEAENESDKLYKEALELANNEANASKEKAR LEIESQTSAARDQLSKQADDLSELIVNRLILEK