>sp|A2BPC7|PETD_PROMS Cytochrome b6-f complex subunit 4 OS=Prochlorococcus marinus GN=petD MSTLKKPDLSDPKLRAKLAKGMGHNYYGEPAWPNDLLYIFPVVILGTIACVVGLAVLDPA MLGDKANPFATPLEILPEWYLYPVFQILRVVPNKLLGIALQTLIPLGLMILPFIENVNKF SNPFRRPIAMSVFLFGTFLTIYLGIGACLPIDKSLTLGLF