2010
DOI: 10.1104/pp.109.150722
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The Stromal Chloroplast Deg7 Protease Participates in the Repair of Photosystem II after Photoinhibition in Arabidopsis    

Abstract: Light is the ultimate source of energy for photosynthesis; however, excessive light leads to photooxidative damage and hence reduced photosynthetic efficiency, especially when combined with other abiotic stresses. Although the photosystem II (PSII) reaction center D1 protein is the primary target of photooxidative damage, other PSII core proteins are also damaged and degraded. However, it is still largely unknown whether degradation of D1 and other PSII proteins involves previously uncharacterized proteases. H… Show more

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Cited by 103 publications
(111 citation statements)
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“…Specifically, it was demonstrated for AtDeg1, 7 and 8 that recombinant versions of these enzymes catalyze in vitro degradation of photodamaged PSII reaction center protein PsbA (D1) which in vivo is inherent to PSII repair cycle. The results have suggested that the photodamaged PsbA protein is cleaved in vivo by introduction of multiple cuts by cooperating AtDegs 1, 5/8, 7 and probably AtDeg2 as well [12,[14][15][16][17]. Similarly, recombinant version of AtDeg1 and AtDeg7 has been demonstrated to be responsible for in vitro degradation of PsbD, PsbS, Lhcb4 and cytb6 as well as PsbB-D, respectively under photoinhibitory conditions [12,18].…”
Section: Introductionmentioning
confidence: 93%
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“…Specifically, it was demonstrated for AtDeg1, 7 and 8 that recombinant versions of these enzymes catalyze in vitro degradation of photodamaged PSII reaction center protein PsbA (D1) which in vivo is inherent to PSII repair cycle. The results have suggested that the photodamaged PsbA protein is cleaved in vivo by introduction of multiple cuts by cooperating AtDegs 1, 5/8, 7 and probably AtDeg2 as well [12,[14][15][16][17]. Similarly, recombinant version of AtDeg1 and AtDeg7 has been demonstrated to be responsible for in vitro degradation of PsbD, PsbS, Lhcb4 and cytb6 as well as PsbB-D, respectively under photoinhibitory conditions [12,18].…”
Section: Introductionmentioning
confidence: 93%
“…The results have suggested that the photodamaged PsbA protein is cleaved in vivo by introduction of multiple cuts by cooperating AtDegs 1, 5/8, 7 and probably AtDeg2 as well [12,[14][15][16][17]. Similarly, recombinant version of AtDeg1 and AtDeg7 has been demonstrated to be responsible for in vitro degradation of PsbD, PsbS, Lhcb4 and cytb6 as well as PsbB-D, respectively under photoinhibitory conditions [12,18]. Later it was demonstrated in a more direct way that Lhcb6 and PsbF apoproteins are degraded in a stress-related manner by AtDeg2 and AtDeg5, respectively [16,19].…”
Section: Introductionmentioning
confidence: 97%
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“…Additionally, the lumenal peptidase CtpA is specifically required for C-terminal processing of the D1 protein (Anbudurai et al, 1994;Oelmüller et al, 1996;Yamamoto et al, 2001); in the absence of this C-terminal processing, no active PSII complex can be formed (Che et al, 2013). Thylakoid bound FtsH and Deg proteases play an important role in degrading damaged D1 (Kapri-Pardes et al, 2007;Sun et al, 2010aSun et al, , 2010bChi et al, 2012b;Kato et al, 2012), even if these proteases are not specific to PSII. Thylakoid protein translocons SecY/E and ALBINO3 (ALB3) have been shown to interact with each other (Klostermann et al, 2002) and are required for co-and posttranslational insertion of plastid-and nuclear-encoded proteins, including components of the PSII reaction center/core complex (Moore et al, 2000;Zhang et al, 2001;Peng et al, 2006;Ma et al, 2007;Cai et al, 2010;Schneider et al, 2014) (reviewed in Richter et al, 2010;Celedon and Cline, 2013).…”
Section: Introductionmentioning
confidence: 99%
“…This explains the mechanism of the donor-side photoinhibition of PSII. More recently, it was also suggested that lipid peroxidation induced by strong illumination accelerates the damage Historically, the Deg protease was first proposed as a protease candidate [31,37,38,47], but there has been controversy over the exact roles of Deg and FtsH in the proteolytic process of the photodamaged D1 protein [32,[48][49][50]. The discussion on this issue is ongoing with newly obtained data.…”
Section: Damage and Degradation Of The D1 Protein Under Light And Heamentioning
confidence: 99%