222 Rieske iron-sulfur protein petC Plastohydroquinone:plastocyanin oxidoreductase iron-sulfur protein MASTALSTASNPTQLCRTRASSLCKPVKGLGFGRERIPRNITCMAGSISADRVPDMSKRELMNLLLLGAISLPTFGMLVPYGSFLVPAGSGSNAGGVAAKDKLGNDILVEDWLKTHGPNDRTLAQGLKGDPTYLVVESDKTLATYGINAVCTHLGCVVPWNAAENKFLCPCHGSQYNNQGKVVRGPAPLSLALVHADVDDGKVVFVPWVETDFRTGDNPWWK UCRIA_WHEAT Cytochrome b6-f complex iron-sulfur subunit, chloroplastic Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions (By similarity).