A kinetic model of non-photochemical quenching in cyanobacteria.

  title={A kinetic model of non-photochemical quenching in cyanobacteria.},
  author={Maxim Gorbunov and Fedor I. Kuzminov and Victor V. Fadeev and J. Dongun Kim and Paul G. Falkowski},
  journal={Biochimica et biophysica acta},
  volume={1807 12},
High light poses a threat to oxygenic photosynthetic organisms. Similar to eukaryotes, cyanobacteria evolved a photoprotective mechanism, non-photochemical quenching (NPQ), which dissipates excess absorbed energy as heat. An orange carotenoid protein (OCP) has been implicated as a blue-green light sensor that induces NPQ in cyanobacteria. Discovered in vitro, this process involves a light-induced transformation of the OCP from its dark, orange form (OCP(o)) to a red, active form, however, the… CONTINUE READING