Role of an Extrinsic 33 Kilodalton Protein of Photosystem II in the Turnover of the Reaction Center-Binding Protein D1 during Photoinhibition†

Biochemistry ◽  
1998 ◽  
Vol 37 (6) ◽  
pp. 1565-1574 ◽  
Author(s):  
Yasusi Yamamoto ◽  
Yasuo Ishikawa ◽  
Etsuko Nakatani ◽  
Mina Yamada ◽  
Haoming Zhang ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Reaction Center ◽  
Binding Protein

scholarly journals Isolation and characterization of an oxygen-evolving Photosystem II reaction center core preparation and a 28 kDa Chl-a-binding protein

1987 ◽  
Vol 891 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Demetrios F. Ghanotakis ◽  
Demetris M. Demetriou ◽  
Charles F. Yocum
Keyword(s):  
Photosystem Ii ◽  
Reaction Center ◽  
Binding Protein ◽  
Chl A ◽  
Isolation And Characterization ◽  
Oxygen Evolving

scholarly journals Role of phosphatidylglycerol in the function and assembly of Photosystem II reaction center, studied in a cdsA-inactivated PAL mutant strain of Synechocystis sp. PCC6803 that lacks phycobilisomes

2008 ◽  
Vol 1777 (9) ◽  
pp. 1184-1194 ◽  
Author(s):  
Hajnalka Laczkó-Dobos ◽  
Bettina Ughy ◽  
Szilvia Z. Tóth ◽  
Josef Komenda ◽  
Ottó Zsiros ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Reaction Center ◽  
Mutant Strain ◽  
Synechocystis Sp

scholarly journals Translation of the Chloroplast psbA mRNA Requires the Nuclear-encoded Poly(A)-binding Protein, RB47

1998 ◽  
Vol 142 (2) ◽  
pp. 435-442 ◽  
Author(s):  
Christopher B. Yohn ◽  
Amybeth Cohen ◽  
Cristen Rosch ◽  
Michael R. Kuchka ◽  
Stephen P. Mayfield
Keyword(s):  
Photosystem Ii ◽  
Reaction Center ◽  
Untranslated Region ◽  
Translational Regulation ◽  
Rna Binding ◽  
Binding Protein ◽  
Biochemical Data ◽  
Cohesive Model ◽  
High Affinity ◽  
Translational Activator

A set of nuclear mutants of C. reinhardtii were identified that specifically lack translation of the chloroplast-encoded psbA mRNA, which encodes the photosystem II reaction center polypeptide D1. Two of these mutants are deficient in the 47-kD member (RB47) of the psbA RNA-binding complex, which has previously been identified both genetically and biochemically as a putative translational activator of the chloroplast psbA mRNA. RB47 is a member of the poly(A)-binding protein family, and binds with high affinity and specificity to the 5′ untranslated region of the psbA mRNA. The results presented here confirm RB47's role as a message-specific translational activator in the chloroplast, and bring together genetic and biochemical data to form a cohesive model for light- activated translational regulation in the chloroplast.

Inhibition of Photosystem II by UV-B-Radiation

1985 ◽  
Vol 40 (1-2) ◽  
pp. 129-133 ◽  
Author(s):  
M. Tevini ◽  
K. Pfister
Keyword(s):  
Photosystem Ii ◽  
Reaction Center ◽  
Mathematical Analysis ◽  
Binding Protein ◽  
Donor Site ◽  
Fluorescence Induction ◽  
Spinach Chloroplasts ◽  
Psii Activity ◽  
Herbicide Binding

Abstract The effect of UV-B-radiation on PSII activity of spinach chloroplasts was analyzed by measuring the integrity of the herbicide-binding protein (HBP 32), by measurement of fluorescence induction in the presence of Diuron (DCMU), and by mathematical analysis of the fluorescence induction curves. It was shown that UV-B inactivates the PSII α-centers but not PSII β-centers. However, the possibility cannot be excluded that in addition the donor site of PSII near the reaction center is attacked by UV-B-radiation.

scholarly journals Chlorophyll Composition, Chlorophyll Fluorescence, and Grain Yield Change in esl Mutant Rice

2018 ◽  
Vol 19 (10) ◽  
pp. 2945 ◽  
Author(s):  
Weiwei Lin ◽  
Xiaodong Guo ◽  
Xinfeng Pan ◽  
Zhaowei Li
Keyword(s):  
Photosystem Ii ◽  
Reaction Center ◽  
Binding Protein ◽  
Grain Filling ◽  
Fluorescence Yield ◽  
Light Energy ◽  
Grain Weight ◽  
Filling Stage ◽  
Grain Filling Stage ◽  
1000 Grain Weight

To evaluate the effect of changes in chlorophyll (Chl) composition and fluorescence on final yield formation, early senescence leaf (esl) mutant rice and its wild-type cultivar were employed to investigate the genotype-dependent differences in Chl composition, Chl fluorescence, and yield characteristics during the grain-filling stage. However, the temporal expression patterns of key genes involved in the photosystem II (PSII) reaction center in the leaves of two rice genotypes were analyzed by quantitative real-time polymerase chain reaction (qRT-PCR). Results showed that the seed-setting rate, 1000-grain weight, and yield per plant remarkably decreased, and the increase in the 1000-grain weight during the grain-filling stage was retarded in esl mutant rice. Chl composition, maximal fluorescence yield (Fm), variable fluorescence (Fv), a maximal quantum yield of PSII photochemistry (Fv/Fm), and net photosynthetic rate (Pn) in esl mutant rice considerably decreased, thereby indicating the weakened abilities of light energy harvesting and transferring in senescent leaves. The esl mutant rice showed an increase in the minimal fluorescence yield (F0) and 1 − Fv/Fm and decreases in the expression levels of light-harvesting Chl a/b binding protein (Cab) and photosystem II binding protein A (PsbA), PsbB, PsbC, and PsbD encoding for the reaction center of the PSII complex during the grain-filling stage. These results indicated the PSII reaction centers were severely damaged in the mesophyll cells of senescent leaves, which resulted in the weakened harvesting quantum photon and transferring light energy to PSI and PSII for carbon dioxide assimilation, leading to enhanced heat dissipation of light energy and a decrease in Pn.

Role of Disulfide Linkage and Putative Intermolecular Binding Residues in the Stability and Binding of the Extrinsic Manganese-Stabilizing Protein to the Photosystem II Reaction Center

Biochemistry ◽  
1994 ◽  
Vol 33 (46) ◽  
pp. 13712-13718 ◽  
Author(s):  
Robert L. Burnap ◽  
Ming Qian ◽  
J.-R. Shen ◽  
Yorinao Inoue ◽  
Louis A. Sherman
Keyword(s):  
Photosystem Ii ◽  
Reaction Center ◽  
Disulfide Linkage ◽  
Manganese Stabilizing Protein ◽  
Binding Residues ◽  
The Stability
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