scholarly journals A Tetratricopeptide Repeat Protein Regulates Carotenoid Biosynthesis and Chromoplast Development in Monkeyflowers (Mimulus)

2020 ◽  
Vol 32 (5) ◽  
pp. 1536-1555 ◽  
Author(s):  
Lauren E. Stanley ◽  
Baoqing Ding ◽  
Wei Sun ◽  
Fengjuan Mou ◽  
Connor Hill ◽  
...  
Keyword(s):  
Carotenoid Biosynthesis ◽  
Tetratricopeptide Repeat ◽  
Repeat Protein ◽  
Tetratricopeptide Repeat Protein

scholarly journals Tetratricopeptide repeat protein Pyg7 is essential for photosystem I assembly by interacting with PsaC in Arabidopsis

2017 ◽  
Vol 91 (6) ◽  
pp. 950-961 ◽  
Author(s):  
Huixia Yang ◽  
Pin Li ◽  
Aihong Zhang ◽  
Xiaogang Wen ◽  
Lixin Zhang ◽  
...  
Keyword(s):  
Photosystem I ◽  
Tetratricopeptide Repeat ◽  
Repeat Protein ◽  
Tetratricopeptide Repeat Protein

scholarly journals Tetratricopeptide repeat protein protects photosystem I from oxidative disruption during assembly

2016 ◽  
Vol 113 (10) ◽  
pp. 2774-2779 ◽  
Author(s):  
Mark Heinnickel ◽  
Rick G. Kim ◽  
Tyler M. Wittkopp ◽  
Wenqiang Yang ◽  
Karim A. Walters ◽  
...  
Keyword(s):  
Membrane Protein ◽  
Chlamydomonas Reinhardtii ◽  
Photosystem I ◽  
Thylakoid Membrane ◽  
Redox State ◽  
Tetratricopeptide Repeat ◽  
Wild Type ◽  
Repeat Protein ◽  
Tetratricopeptide Repeat Protein ◽  
History Of

A Chlamydomonas reinhardtii mutant lacking CGL71, a thylakoid membrane protein previously shown to be involved in photosystem I (PSI) accumulation, exhibited photosensitivity and highly reduced abundance of PSI under photoheterotrophic conditions. Remarkably, the PSI content of this mutant declined to nearly undetectable levels under dark, oxic conditions, demonstrating that reduced PSI accumulation in the mutant is not strictly the result of photodamage. Furthermore, PSI returns to nearly wild-type levels when the O2 concentration in the medium is lowered. Overall, our results suggest that the accumulation of PSI in the mutant correlates with the redox state of the stroma rather than photodamage and that CGL71 functions under atmospheric O2 conditions to allow stable assembly of PSI. These findings may reflect the history of the Earth’s atmosphere as it transitioned from anoxic to highly oxic (1–2 billion years ago), a change that required organisms to evolve mechanisms to assist in the assembly and stability of proteins or complexes with O2-sensitive cofactors.

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