Results 51 to 60 of about 5,741,545 (200)

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  

Prochlorococcus and Synechococcus have evolved different adaptive mechanisms to cope with light and UV stress [PDF]

open access: yes, 2012
Prochlorococcus and Synechococcus, which numerically dominate vast oceanic areas, are the two most abundant oxygenic phototrophs on Earth. Although they require solar energy for photosynthesis, excess light and associated high UV radiations can induce ...
Christophe eSix   +32 more
core   +1 more source

Chlorophyll Fluorescence Measurements in Arabidopsis Wild-type and Photosystem II Mutant Leaves

open access: yesBio-Protocol, 2015
Chlorophyll fluorescence measurement is a widely used technique to determine photosynthetic performance. Light energy absorbed by a chlorophyll molecule can be dissipated by driving photochemical energy conversion, as heat in non-photochemical quenching ...
Iris Steinberger   +2 more
doaj   +1 more source

Impact of additional green light and deficit in cryptochrome 1 on photosynthetic activity and pro-/antioxidant balance in Arabidopsis thaliana

open access: yesPhotosynthetica, 2023
The light spectral composition acting through a set of photoreceptors, such as cryptochromes and phytochromes, plays an important role in maintaining sustainable photosynthesis.
V. KRESLAVSKI   +7 more
doaj   +1 more source

Ultrafast infrared observation of exciton equilibration from oriented single crystals of photosystem II

open access: yesNature Communications, 2016
There are two common models of photosynthetic light harvesting by photosystem II cores. Here, the authors use structurally sensitive, time resolved infrared pleochroism of single crystals of photosystem II core complexes to probe the exciton ...
Marius Kaucikas   +4 more
doaj   +1 more source

Biochemical and biotechnological approaches as basis for structure determination of pigment-protein complexes of oxygenic photosynthesis [PDF]

open access: yes, 2009
Today the structure of photosystem II, which is the enzyme responsible for the evolution of molecular oxygen by plants, algae and cyanobacteria, is known up to a resolution of about 3.0 Å in cyanobacteria (Loll et al., 2005).
Fey, Holger
core  

Wheat truncated hemoglobin interacts with photosystem I PSK-I subunit and photosystem II subunit PsbS1

open access: yes, 2013
Recently, the truncated hemoglobin gene (trHb) was discovered in plant species, however, its role has not yet been determined. In this study, the gene expression of wheat trHb (TatrHb) was analyzed under various biotic and abiotic stresses.
M. J. Hong   +4 more
core   +1 more source

Extraction and Reconstitution of Photosystem II [PDF]

open access: yesPlant Physiology, 1972
Hill activity (oxygen evolution with ferricyanide as the electron acceptor), light-induced absorbance changes at liquid nitrogen temperature associated with the primary activity of photosystem II, and fluorescence yield changes at both low temperature and room temperature were measured with lyophilized spinach chloroplasts before and after extraction ...
S, Okayama, W L, Butler
openaire   +2 more sources

Non-intrusive Assessment of Photosystem II and Photosystem I in Whole Coral Tissues

open access: yesFrontiers in Marine Science, 2017
Reef building corals (phylum Cnidaria) harbor endosymbiotic dinoflagellate algae (genus Symbiodinium) that generate photosynthetic products to fuel their host's metabolism.
Milán Szabó   +10 more
doaj   +1 more source

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

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