Psii antenna
WebJan 28, 2024 · PSII antenna size heterogeneity has been intensively studied in the past. Based on DCMU fluorescence rise kinetics, multiple types of … WebNov 1, 2024 · Photosynthetic pigment-protein complexes (PPCs) accomplish light-energy capture and photochemistry in natural photosynthesis. In this review, we examine three …
Psii antenna
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WebJun 8, 2024 · Under light conditions favoring PSII excitation, the PSII antenna, light-harvesting complex II (LHCII), is phosphorylated and forms a supercomplex with PSI core and the PSI antenna, light-harvesting complex I (LHCI). Both LHCI and LHCII then transfer excitation energy to the PSI core. WebJan 1, 2024 · Lhcb4 and Lhcb5, coding for CP29 and CP26, respectively, the minor, monomeric antenna proteins of PSII, are found in green algae, mosses and higher plants, whereas Lhcb6 (CP24) is missing in green algae and seems to have evolved later ( Elrad & Grossman, 2004 ).
WebJul 6, 2016 · The modulation of Lhcb protein content correlates with the reduction of the functional PSII antenna size. These results suggest that the Lhcb3, Lhcb4.3 and Lhcb6 antenna subunits are major players in modulation of the PSII antenna size upon long-term acclimation to increased light levels. PsbS was not detected in the isolated PSII-LHCII ... WebApr 12, 2024 · Lastly, the PSII-M, PSII-I and PSII-I′ models were used to initiate one final round of real-space refinement in Phenix 1.17.1-3660 (ref. 109) including structure …
WebIndeed, LHCII is an antenna that can connect energetically the entire photosynthetic apparatus, Tree Physiology Volume 00, 2024 both PSI and PSII, and according to different light intensities can ... WebAug 18, 2024 · Its large PSII antenna consists of many weakly bound LHCIIs, which form effective quenching centers, even at relatively low light. This, together with sensitive photosynthetic control on the level of cytochrome b6f complex (protecting PSI), is the crucial photoprotective mechanism in spruce. High-light acclimation of spruce involves the ...
WebApr 13, 2024 · Photosynthetic proteins of Photosystem II (PSII) and oxygen evolving complex i.e., Cytb559, OEC16, OEC23 and OEC33 as well as those of PSI such as PSI-III, PSI-V, and PSI-VI, decreased in ...
WebOct 10, 2024 · The PSII core complex (PSII-CC) is the smallest unit in which the RC is connected to the antenna proteins. It is a dimeric pigment–protein complex in which … by the way in formal wayWebApr 1, 1996 · The numbers of antenna chlorophyll molecules associated with the mutant PSII centers were, therefore, three to five times smaller than that of PSII a in the wild type rice. Rates of PSII electron transport determined on the basis of PSII centers in the three mutants were 60–70% of that in the normal plant at all photon flux densities examined ... cloud blowing wind drawingWebNov 1, 2024 · It is conceivable that this PBS–PSI–PSII megacomplex acts as a module to distribute energy flow between two photosystems. The N-terminal core antenna domain … by the way in emailPhotosynthetic light reactions are finely tuned to prevailing light conditions and CO2 availability to avoid excitation pressure at photosystem II (PSII). Over the short term, state transitions balance changes in absorbed light energy between the two photosystems by altering the distribution of light-harvesting … See more Photorespiration recycles 2-phosphoglycolate, a toxic product of the Rubisco oxygenation reaction. The photorespiratory pathway takes place across multiple … See more C4 photosynthesis reduces photorespiration by compartmentalizing Rubisco into specialized bundle sheath cells that concentrate CO2 and protect Rubisco from … See more by the way in japaneseWebthe P680 to accept additional energy from the PSII antenna com-plex and results in a higher chance for the production of ChlF. The processes of ChlF generation are illustrated in … by the way in hindiWebBy using the PSII% (relative PSII antenna size or percentage of light distributed to PSII) estimated from our 77 K chlorophyll fluorescence data and PSII efficiency measured by room temperature chlorophyll fluorescence, we quantified rates of linear electron flow (LEF) in response to light in these two strains (Figure 4f). by the way in formal writingWebApr 6, 2024 · Changes of PSII and PSI antenna and core protein levels. Proteins from control and Tl-treated white mustard leaves were separated by SDS-PAGE followed by immunodetection with antibodies against Lhcb1, Lhcb2, Lhca1 (antenna proteins) and D1, D2, CP43, PsbO, PsaA (core proteins). cloud blue hex