>sp|Q31NV7|UCRI_SYNE7 Cytochrome b6-f complex iron-sulfur subunit OS=Synechococcus elongatus GN=petC MTQVSGASDVPSMGRRQFMNLLTFGSVTGVALGALYPVVNYFIPPSSGGSGGGVAAKDAL GNDVVLSKFLADHNVGDRTLVQGLKGDPTYLVVESSEAIGDYGINAVCTHLGCVVPWNAS ENKFKCPCHGSQYDATGKVVRGPAPLSLALAHVSVTDDKVFLSPWTETDFRTGDNPWWA