The cyanobacteriochrome, TePixJ, isomerizes its own chromophore by converting phycocyanobilin to phycoviolobilin.

@article{Ishizuka2011TheCT,
  title={The cyanobacteriochrome, TePixJ, isomerizes its own chromophore by converting phycocyanobilin to phycoviolobilin.},
  author={Takami Ishizuka and Ayumi Kamiya and Hiroyuki Suzuki and Rei Narikawa and Takumi Noguchi and Takayuki Kohchi and Katsuhiko Inomata and Masahiko Ikeuchi},
  journal={Biochemistry},
  year={2011},
  volume={50 6},
  pages={953-61}
}
The cyanobacterial phototaxis regulator protein, TePixJ, is a member of the subfamily of cyanobacteriochromes that binds phycoviolobilin (PVB) as a chromophore and exhibits reversible photoconversion between blue light-absorbing (Pb) and green light-absorbing (Pg) forms. We reconstituted the PVB-binding photoactive holocomplex in vivo and in vitro. Coexpression of the apoprotein and phycocyanobilin (PCB) in Escherichia coli (in vivo reconstitution) produced a mixture of the PCB-bound and PVB… CONTINUE READING

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