Results 71 to 80 of about 2,381 (181)

Photophysical Behavior and Assignment of the Low-Energy Chlorophyll States in the CP43 Proximal Antenna Protein of Higher Plant Photosystem II^†

, 2016
We have employed absorption, circular dichroism (CD), and persistent spectral hole-burning measurements at 1.7 K to study the photoconversion properties and exciton coupling of low-energy chlorophylls (Chls) in the CP43 proximal antenna light-harvesting ...
Rafael Picorel (1688653), Michael Seibert (341774), Elmars Krausz (1417477), Joseph L. Hughes (2351176)   +3 more
core   +1 more source

Energy transfer processes in the isolated core antenna complexes CP43 and CP47 of photosystem II

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2010
The energy equilibration and transfer processes in the isolated core antenna complexes CP43 and CP47 of photosystem II have been studied by steady-state and ultrafast (femto- to nanosecond) time-resolved spectroscopy at room temperature. The annihilation-free femtosecond absorption data can be described by surprisingly simple sequential kinetic models,
Casazza, Anna Paola, Szczepaniak, Malwina, Müller, Marc G., Zucchelli, Giuseppe, Holzwarth, Alfred R.   +4 more
openaire   +2 more sources

Isolation of phosphorylated and dephosphorylated forms of the CP43 internal antenna of photosystem II in Hordeum vulgare L. [PDF]

Journal of Experimental Botany, 2005
As a consequence of variation in environmental factors, light being the most important one, a number of photosystem II polypeptides may be reversibly phosphorylated by thylakoid-bound kinase(s). Among them, the reaction centre D1 and D2 polypeptides, the PsbH subunit, and the inner antenna CP43.
ANDREUCCI F, BARBATO, Roberto, PICOLLO C, SEGALLA A.   +3 more
openaire   +3 more sources

Recent advances in the structural biology of photosystem II

The Plant Journal, Volume 126, Issue 4, May 2026.
SUMMARY Photosystem II (PSII) is the membrane protein‐pigment complex responsible for the light‐driven oxidation of water to molecular oxygen, a reaction that enables the aerobic biosphere and powers biological carbon fixation. Over the past two decades, structural biology has transformed our understanding of PSII from low‐resolution outlines of its ...
James W. Murray
wiley   +1 more source

Three-dimensional model and characterization of the iron stress-induced CP43'-photosystem I supercomplex isolated from the cyanobacterium Synechocystis PCC 6803.

, 2001
The cyanobacterium Synechocystis PCC 6803 has been subjected to growth under iron-deficient conditions. As a consequence, the isiA gene is expressed, and its product, the chlorophyll a-binding protein CP43', accumulates in the cell.
Nield, J., Bibby, T.S., Barber, J.
core   +1 more source

How state transitions balance photosynthetic electron transport in plants – a quantitative study

New Phytologist, Volume 250, Issue 1, Page 209-229, April 2026.
Summary In plants, the process of state transition regulates the allocation of sunlight energy between Photosystem II (PSII) and PSI. However, the implications of state transitions for harmonizing electron transport rates between photosystems, and a full quantitative picture of this process, remain underexplored.
Haniyeh Koochak, Hui Ming Olivia Oung, Malgorzata Krysiak, Vaclav Svoboda, Helmut Kirchhoff   +4 more
wiley   +1 more source

Psb27, a transiently associated protein, binds to the chlorophyll binding protein CP43 in photosystem II assembly intermediates

, 2011
Photosystem II (PSII), a large multisubunit pigment–protein complex localized in the thylakoid membrane of cyanobacteria and chloroplasts, mediates light-driven evolution of oxygen from water.
Haijun Liu, Himadri B. Pakrasi, Michael L. Gross, Richard Y.-C. Huang, Jiawei Chen   +4 more
core   +1 more source

pkn22 (alr2502) encoding a putative Ser/Thr kinase in the cyanobacterium Anabaena sp PCC 7120 is induced by both iron starvation and oxidative stress and regulates the expression of isiA

, 2003
In cyanobacteria, the isiA gene is required for cell adaptation to oxidative damage caused by the absence of iron. We show here that a putative Ser/Thr kinase gene, pkn22 (alr2052), is activated by iron deficiency and oxidative damage in Anabaena sp. PCC
Zhang, CC, CNRS, IBSM, Chim Bacterienne Lab, 31 Chemin Joseph Aiguier, F-13402 Marseille 20, France, Jeanjean, R, Xu, WL, Zhang, CC, Liu, YD   +4 more
core   +2 more sources

From isolation to insights: mitochondrial complex I in the diatom Phaeodactylum tricornutum

The Plant Journal, Volume 125, Issue 3, February 2026.
SUMMARY Diatoms are among the most ecologically successful microalgae, contributing significantly to marine primary production and global carbon cycling. Their distinctive metabolic architecture, shaped by a complex evolutionary history involving secondary endosymbiosis, includes a highly compartmentalized cell organization and unique metabolic ...
Federico Berdun, Jennifer Senkler, Michael Senkler, Noah Ditz, Eva Plönnigs, Thomas Reinard, Eduardo Zabaleta, Hans‐Peter Braun   +7 more
wiley   +1 more source

Photosynthesis under far‐red light—evolutionary adaptations and bioengineering of light‐harvesting complexes

FEBS Letters, Volume 600, Issue 2, Page 164-187, January 2026.
Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii, Edoardo Andrea Cutolo, Daniele Montepietra, Claudia Battarra, Roberto Caferri, Stefano Capaldi, Zeno Guardini, Luca Dall'Osto, Roberto Bassi   +8 more
wiley   +1 more source