>sp|A3PBI5|UCRI_PROM0 Cytochrome b6-f complex iron-sulfur subunit OS=Prochlorococcus marinus GN=petC MTQLSSNDVPSMGRRQFMNLLTFGTATGVALGALYPVANYFMPLRAGGGGGGTSAKDELG NPITKTGWLATHQAGDRSLVQGLKGDPTYLIVNEVGEIGEFGLNAICTHLGCVVPWDSGA NKFICPCHGSQYDTNGKVVRGPAPLSLALAHVDIEDDAVLVKQWSETDFRTNENPWWA