>sp|A8G6V3|ATPF_PROM2 ATP synthase subunit b OS=Prochlorococcus marinus GN=atpF MNFTLLATEGFGLNFNLFETNILNWAVVIFGLYKFLPSFLGKMLQKRREGILLELKDAED RLLNATQALEKAKKDLSSAEEKASQIKADSLKRSESIRMESEKKAIEEMARIKQSAISDE SSEASRAISQLRKEAIELAIKKALDSLPNRLDQTKQENLVTQSINNIEEN