Fluorescence recovery protein (original) (raw)

Fluorescence recovery protein (FRP) is a small protein involved in regulating non-photochemical quenching in cyanobacteria. It prevents accumulation of the red photoactivated form of orange carotenoid protein (OCP), thereby reducing the amount of fluorescence quenching that occurs between the OCP and the phycobilisome antenna complexes. It interacts with the C-terminal domain of OCP, which shares homology with the NTF2 superfamily.