>sp|B2J3K2|UCRI_NOSP7 Cytochrome b6-f complex iron-sulfur subunit OS=Nostoc punctiforme GN=petC MAQFSESADVPDMGRRQFMNLLTFGTVTGVALGALYPVVNYFIPPATGGAGGGTTAKDEL GNDVSVTKFLENRNAGDRNLVQGLKGDPTYIVVDSKEAIKDYGINAICTHLGCVVPWNVA ENKFKCPCHGSQYDETGKVVRGPAPLSLALAHTNVSDDKIVLTPWTETDFRTGDAPWWS