Reevaluating the mechanism of excitation energy regulation in iron-starved cyanobacteria.

@article{Chen2017ReevaluatingTM,
  title={Reevaluating the mechanism of excitation energy regulation in iron-starved cyanobacteria.},
  author={Hui-Yuan S Chen and Michelle Liberton and Himadri B. Pakrasi and Dariusz M Niedzwiedzki},
  journal={Biochimica et biophysica acta. Bioenergetics},
  year={2017},
  volume={1858 3},
  pages={
          249-258
        }
}
This paper presents spectroscopic investigations of IsiA, a chlorophyll a-binding membrane protein produced by cyanobacteria grown in iron-deficient environments. IsiA, if associated with photosystem I, supports photosystem I in light harvesting by efficiently transferring excitation energy. However, if separated from photosystem I, IsiA exhibits considerable excitation quenching observed as a substantial reduction of protein-bound chlorophyll a fluorescence lifetime. Previous spectroscopic… CONTINUE READING