Results 51 to 60 of about 42,314 (255)

Models and measurements of energy-dependent quenching. [PDF]

open access: yes, 2013
Energy-dependent quenching (qE) in photosystem II (PSII) is a pH-dependent response that enables plants to regulate light harvesting in response to rapid fluctuations in light intensity.
Amarnath, Kapil   +3 more
core   +1 more source

Cloning and Sequence Analysis of Gene Encoding psbZ from Silybum marianum (L.) Gaertn [PDF]

open access: yesInternational Journal Bioautomation, 2016
Photosystem II is known as the core of photosynthesis and among of the photosystem II protein complex, PsbZ protein is very important because of its role in connection PSII and LHCII.
Yousef Mohammadi   +2 more
doaj  

The Effects of Soil Salinity on Photosystem II of Rice Seedlings

open access: yesGuan'gai paishui xuebao, 2022
【Objective】 Photosystem II (water-plastoquinone oxidoreductase) is a protein complex in light-dependent reactions of oxygenic photosynthesis. The purpose of this paper is to study the effect of salt stress on photosystem II of rice seedlings. 【Method】 We
ZHANG Yunhe   +6 more
doaj   +1 more source

Photophysiological and photosynthetic complex changes during iron starvation in Synechocystis sp. PCC 6803 and Synechococcus elongatus PCC 7942

open access: yes, 2013
Iron is an essential component in many protein complexes involved in photosynthesis, but environmental iron availability is often low as oxidized forms of iron are insoluble in water.
Bibby, T.S.   +4 more
core   +1 more source

Going around the Kok cycle of the water oxidation reaction with femtosecond X-ray crystallography

open access: yesIUCrJ, 2023
The water oxidation reaction in photosystem II (PS II) produces most of the molecular oxygen in the atmosphere, which sustains life on Earth, and in this process releases four electrons and four protons that drive the downstream process of CO2 fixation ...
Asmit Bhowmick   +22 more
doaj   +1 more source

Trehalose matrix effects on electron transfer in Mn-depleted protein-pigment complexes of Photosystem II

open access: yesBiochimica et Biophysica Acta (BBA) - Bioenergetics, 2021
The kinetics of flash-induced re-reduction of the Photosystem II (PS II) primary electron donor P680 was studied in solution and in trehalose glassy matrices at different relative humidity. In solution, and in the re-dissolved glass, kinetics were dominated by two fast components with lifetimes in the range of 2-7 μs, which accounted for >85% of the ...
Mahir D. Mamedov   +6 more
openaire   +2 more sources

Analysis of the chloroplast protein kinase Stt7 during state transitions.

open access: yesPLoS Biology, 2009
State transitions allow for the balancing of the light excitation energy between photosystem I and photosystem II and for optimal photosynthetic activity when photosynthetic organisms are subjected to changing light conditions.
Sylvain Lemeille   +5 more
doaj   +1 more source

Role of plastid protein phosphatase TAP38 in LHCII dephosphorylation and thylakoid electron flow. [PDF]

open access: yesPLoS Biology, 2010
Short-term changes in illumination elicit alterations in thylakoid protein phosphorylation and reorganization of the photosynthetic machinery. Phosphorylation of LHCII, the light-harvesting complex of photosystem II, facilitates its relocation to ...
Mathias Pribil   +4 more
doaj   +1 more source

Spectrally selective fluorescence imaging of Chlorobaculum tepidum reaction centers conjugated to chelator-modified silver nanowires [PDF]

open access: yes, 2017
A polyhistidine tag (His-tag) present on Chlorobaculum tepidum reaction centers (RCs) was used to immobilize photosynthetic complexes on a silver nanowire (AgNW) modified with nickel-chelating nitrilo-triacetic acid (Ni-NTA).
Ashraf, Khuram   +7 more
core   +1 more source

Structural basis for an early stage of the photosystem II repair cycle in Chlamydomonas reinhardtii

open access: yesNature Communications
Photosystem II (PSII) catalyzes water oxidation and plastoquinone reduction by utilizing light energy. It is highly susceptible to photodamage under high-light conditions and the damaged PSII needs to be restored through a process known as the PSII ...
Anjie Li   +6 more
doaj   +1 more source

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