2002年8月9日 · The PGR5 gene encodes a novel protein involved in the cyclic electron flow around PSI playing a central role in the acidification of the thylakoid lumen, thus inducing thermal dissipation. We provide evidence that PGR5 functions in the photoprotection of PSI under conditions of acceptor side limitation, by draining electrons trapped in PSI.

2019年11月1日 · Here we demonstrate that the higher plant plastid NADH/Fd:plastoquinone reductase (NDH) and proposed PGR5/PGRL1 ferredoxin:plastoquinone reductase (FQR) pathways of CEF are strongly, rapidly and reversibly inhibited in vitro by ATP with K i values of 670 μM and 240 μM respectively, within the range of …

2021年3月4日 · In plants and algae, PGR5-dependent cyclic electron flow (CEF) is an important regulator of acclimation to fluctuating environments, but how PGR5 participates in CEF is unclear. In...

2021年7月6日 · Here, we summarized the main biochemical processes of the PGR5/PGRL1-dependent CET pathway and its physiological significance in protecting the photosystem II and PSI, ATP/NADPH ratio maintenance, and regulating the transitions between LET and CET in order to optimize photosynthesis when encountering unfavorable conditions.

2013年2月7日 · Here, we show that PGRL1 accepts electrons from ferredoxin in a PGR5-dependent manner and reduces quinones in an AA-sensitive fashion. PGRL1 activity itself requires several redox-active cysteine residues and a Fe-containing cofactor. We therefore propose that PGRL1 is the elusive ferredoxin-plastoquinone reductase (FQR).

2010年8月1日 · 在本研究中，我们表明干旱胁迫诱导 pgr5 和 pgrl1 基因的转录和翻译上调，这是迄今为止 fqr 依赖性 cet 的唯一特征成分。 相比之下，NDH-H 基因的表达，NDH 复合体的代表，在干旱胁迫和对照植物之间没有差异。

Recent studies indicate that FQR-dependent CET is dependent upon PGR5, a small protein of unknown function. In a previous study we found that overexpression of PGR5 causes alterations in growth and development associated with decreased chloroplast development and a transient increase in nonphotochemical quenching (NPQ) after the shift from dark ...

2008年7月29日 · Recent studies indicate that FQR-dependent CET is dependent upon PGR5, a small protein of unknown function. In a previous study we found that overexpression of PGR5 causes alterations in growth and development associated with decreased chloroplast development and a transient increase in nonphotochemical quenching …

2021年6月24日 · One of them postulates that, in plants, plastoquinone (PQ) is reduced by a Fd-PQ reductase (FQR) 16, and the identification of the thylakoid proteins PGR5 and PGRL1 17, 18 appears to support...

2008年1月25日 · Although PGR5 does not contain a sequence motif that qualifies the protein to participate directly in CEF, the lower plateau of chlorophyll fluorescence during Fd-dependent reduction of PQ in situ and the drop in NPQ seen in pgr5 mutants has lead to the suggestion that PGR5 plays a significant role in CEF around PSI (Munekage et al., 2002).