>sp|A2BUV6|PETD_PROM5 Cytochrome b6-f complex subunit 4 OS=Prochlorococcus marinus GN=petD MSTLKKPDLSDPKLRAKLAKGMGHNYYGEPAWPNDLLYIFPVVILGTIACVVGLAVLDPA MLGDKANPFATPLEILPEWYLYPVFQILRVVPNKLLGIALQTLIPLGLMILPFIENVNKF SNPFRRPVAMVVFLFGTFLTIYLGIGACLPIDKSLTLGLF