Importance of the cyanobacterial Gun4 protein for chlorophyll metabolism and assembly of photosynthetic complexes.

@article{Sobotka2008ImportanceOT,
  title={Importance of the cyanobacterial Gun4 protein for chlorophyll metabolism and assembly of photosynthetic complexes.},
  author={Roman Sobotka and Ulf D{\"u}hring and Josef Komenda and Enrico Peter and Zdenko Gardian and Martin Tich{\'y} and Bernhard Grimm and Annegret Wilde},
  journal={The Journal of biological chemistry},
  year={2008},
  volume={283 38},
  pages={25794-802}
}
Gun4 is a porphyrin-binding protein that activates magnesium chelatase, a multimeric enzyme catalyzing the first committed step in chlorophyll biosynthesis. In plants, GUN4 has been implicated in plastid-to-nucleus retrograde signaling processes that coordinate both photosystem II and photosystem I nuclear gene expression with chloroplast function. In this work we present the functional analysis of Gun4 from the cyanobacterium Synechocystis sp. PCC 6803. Affinity co-purification of the FLAG… CONTINUE READING
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