UQCRFS1 is an iron-sulfur Rieske protein belongs to major subunits of cytochrome b6f complex of photosynthetic membranes and is encoded by petA gene. A hydrophobic stretch next to N-terminus of the protein is considered as a transmembrane anchor for the Rieske protein. It had been shown that the Rieske protein is involved in the quinol binding.
In plants it is essential protein for photoautotrophism. Confers resistance to photo-oxidative damages by contributing to the thermal dissipation of l