Volume 33, No 10, Oct 2023

ISSN: 1001-0602 
EISSN: 1748-7838 2018 
impact factor 17.848* 
(Clarivate Analytics, 2019)

Volume 33 Issue 10, October 2023: 806-809   |  Open Access

LETTERS TO THE EDITOR

Structural insights into plant phytochrome A as a highly sensitized photoreceptor

Yuxuan Zhang^1,2,† , Xiaoli Lin^1,2,† , Chengying Ma^3,4,† , Jun Zhao^1,† , Xiaojin Shang¹ , Zhengdong Wang^1,2,3 , Bin Xu¹ , Ning Gao^3,4 , Xing Wang Deng^1,2,3,* , Jizong Wang^1,2,*

¹National Key Laboratory of Wheat Improvement, Peking University Institute of Advanced Agricultural Sciences, Shandong Laboratory of Advanced Agriculture Sciences at Weifang, Weifang, Shandong, China
²State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, Peking University, Beijing, China
³Peking-Tsinghua Joint Center for Life Sciences, Peking University, Beijing, China
⁴State Key Laboratory of Membrane Biology, School of Life Sciences, Peking University, Beijing, China
^†These authors contributed equally: Yuxuan Zhang, Xiaoli Lin, Chengying Ma, Jun Zhao
Correspondence: Xing Wang Deng(deng@pku.edu.cn)Jizong Wang(wangjizong@pku.edu.cn)

Dear Editor,

Phytochromes (phys), first discovered in plants, are red and far-red photoreceptors that are also widely found in bacteria and fungi later.1,2 Plant phys utilize the linear tetrapyrrole chromophore called photochromobilin (PΦB). Phys reversibly toggle between the red light-absorbing Pr and the far-red light-absorbing Pfr conformers by photoconversion, with absorption peaks at ~667 nm and ~730 nm, respectively. The Pfr conformer can be converted to Pr in darkness, a process called dark reversion or thermoreversion.2,3 In plants, Pr conformers reside in the cytoplasm; and upon photoconversion, Pfr conformers are translocated into the nucleus, resulting in a plethora of physiological and developmental changes throughout the plant life cycle.

https://doi.org/10.1038/s41422-023-00858-4

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