>sp|A2BPU5|UCRI_PROMS Cytochrome b6-f complex iron-sulfur subunit OS=Prochlorococcus marinus GN=petC MTQLSSNDVPSMGRRQFMNLLTFGTATGVALGALYPVANYFMPLRAGGGGGGTSAKDELG NPITKTGWLATHQAGDRSLVQGLKGDPTYLIVNEGGEIGEFGLNAICTHLGCVVPWDSGA NKFICPCHGSQYDTNGKVVRGPAPLSLALAHVDIEDDAVLVKQWSETDFRTNENPWWA