>sp|Q46GW1|UCRI_PROMT Cytochrome b6-f complex iron-sulfur subunit OS=Prochlorococcus marinus GN=petC MTQMTTADVPSMGRRQFMNLLTFGTVTGVALGALYPVAQYFTPYRAGGGGGGTNAKDELG NNVSASGWLSTHPVGDRSLVQGLKGDPTYLIVEGEDAITSYGINAICTHLGCVVPWNSGA NKYMCPCHGSQYDSTGKVVRGPAPLSLAIAHVSIEDDQVLVSQWTETDFRTGTDPWWG