Results 51 to 60 of about 21,155,445 (195)

Reconstructing the origin of oxygenic photosynthesis: do assembly and photoactivation recapitulate evolution?

open access: yesFrontiers in Plant Science, 2016
Due to the great abundance of genomes and protein structures that today span a broad diversity of organisms, now more than ever before, it is possible to reconstruct the molecular evolution of protein complexes at an incredible level of detail.
Tanai eCardona
doaj   +1 more source

Structural Basis of Photosystem I and Its Photosynthesis Regulation in Green Plants

open access: yesShengwu huaxue yu shengwu wuli jinzhan
Photosynthesis is one of the most important chemical reactions on earth. Oxygenic photosynthetic organisms convert solar energy into chemical energy and release oxygen, thus sustaining almost all life on this planet.
SU Xiao-Dong, LI Mei
doaj   +1 more source

Blue light is more essential than red light for maintaining the activities of photosystem II and I and photosynthetic electron transport capacity in cucumber leaves

open access: yesJournal of Integrative Agriculture, 2016
Blue and red lights differently regulate leaf photosynthesis. Previous studies indicated that plants under blue light generally exhibit better photosynthetic characteristics than those under red light.
Yan-xiu MIAO   +4 more
doaj   +1 more source

Biochemische Charakterisierung von Photosystem-I-Komplexen aus Diatomeen [PDF]

open access: yes, 2009
Photosystem (PS) I is a huge membrane protein complex which coordinates around 200 co-factors. Upon light excitation a charge separation at the PS I reaction centre is induced which leads to an electron transport across the thylakoid membrane and the ...
Veith, Thomas
core  

Photosystem I: a search for green plant trimers [PDF]

open access: yesPhotochemical & Photobiological Sciences, 2005
Recent blue-native gel electrophoresis studies gave evidence for the existence of dimeric and trimeric PSI complexes in green plants. We used single particle electron microscopy to investigate all the larger particles from the thylakoid membrane of pea (Pisum sativum var. Charmette).
Oosterwijk, Niels van   +3 more
openaire   +3 more sources

Digalactosyl-diacylglycerol-deficiency lowers the thermal stability of thylakoid membranes [PDF]

open access: yes, 2010
We investigated the effects of digalactosyl-diacylglycerol (DGDG) on the organization and thermal stability of thylakoid membranes, using wild-type Arabidopsis thaliana and the DGDG-deficient mutant, dgd1. Circular-dichroism measurements reveal that DGDG-
Tünde Tóth   +15 more
core   +1 more source

Proteins of the cyanobacterial photosystem I

open access: yesBiochimica et Biophysica Acta (BBA) - Bioenergetics, 2001
Cyanobacterial photosystem (PS) I is remarkably similar to its counterpart in the chloroplast of plants and algae. Therefore, it has served as a prototype for the type I reaction centers of photosynthesis. Cyanobacterial PS I contains 11-12 proteins. Some of the cyanobacterial proteins are modified post-translationally.
Xu, Wu   +3 more
openaire   +2 more sources

Early Archean origin of heterodimeric Photosystem I

open access: yesHeliyon, 2018
When and how oxygenic photosynthesis originated remains controversial. Wide uncertainties exist for the earliest detection of biogenic oxygen in the geochemical record or the origin of water oxidation in ancestral lineages of the phylum Cyanobacteria.
Tanai Cardona
doaj   +1 more source

DnaK3 Is Involved in Biogenesis and/or Maintenance of Thylakoid Membrane Protein Complexes in the Cyanobacterium Synechocystis sp. PCC 6803

open access: yesLife, 2020
DnaK3, a highly conserved cyanobacterial chaperone of the Hsp70 family, binds to cyanobacterial thylakoid membranes, and an involvement of DnaK3 in the biogenesis of thylakoid membranes has been suggested. As shown here, light triggers synthesis of DnaK3
Adrien Thurotte   +4 more
doaj   +1 more source

Light harvesting in photosystem II [PDF]

open access: yesPhotosynthesis Research, 2013
This review focuses on the light-harvesting properties of photosystem I (PSI) and its LHCI outer antenna. LHCI consists of different chlorophyll a/b binding proteins called Lhca's, surrounding the core of PSI. In total, the PSI-LHCI complex of higher plants contains 173 chlorophyll molecules, most of which are there to harvest sunlight energy and to ...
Croce, R., van Amerongen, H.
openaire   +5 more sources

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