http://newunderthesunblog.wordpress.com/my-research/
The PsbO protein is common among all oxygenic photosynthetic organisms, but the number of copies associated with each PSII complex differs between plants and cyanobacteria. The PsbR protein is unique to plants. Both plants and cyanobacteria contain the PsbP and PsbQ proteins, but their roles and modes of association with PSII complexes differ significantly between the two systems.
The PsbO protein is common among all oxygenic photosynthetic organisms, but the number of copies associated with each PSII complex differs between plants and cyanobacteria. The PsbR protein is unique to plants. Both plants and cyanobacteria contain the PsbP and PsbQ proteins, but their roles and modes of association with PSII complexes differ significantly between the two systems.
