Results 11 to 20 of about 1,600,579 (309)

SnapShot: The Germinal Center Reaction

Cell, 2014
To produce high-affinity antibodies, B cells must undergo iterative cycles of targeted mutagenesis and affinity-based selection. These cycles take place in a structure known as the germinal center, which forms in secondary lymphoid organs upon exposure to antigenic stimuli. Here, we summarize our current understanding of the germinal center reaction.
Victora, Gabriel D.
openaire   +3 more sources

Photosynthetic reaction center/graphene bio-hybrid for low-power optoelectronics. [PDF]

Photosynthetica, 2023
Photosynthetic reaction center (pRC) purified from Rhodobacter sphaeroides 2.4.1 purple bacteria was deposited on a graphene carrier exfoliated from the liquid phase and layered on the surface of SiO2/Si substrate for optoelectronic application.
Vujin J, Szabó T, Panajotovic R, Végh AG, Rinyu L, Nagy L.   +5 more
europepmc   +2 more sources

Excitonic structure and charge separation in the heliobacterial reaction center probed by multispectral multidimensional spectroscopy. [PDF]

Nat Commun, 2021
Photochemical reaction centers are the engines that drive photosynthesis. The reaction center from heliobacteria (HbRC) has been proposed to most closely resemble the common ancestor of photosynthetic reaction centers, motivating a detailed understanding
Song Y, Sechrist R, Nguyen HH, Johnson W, Abramavicius D, Redding KE, Ogilvie JP.   +6 more
europepmc   +2 more sources

Energetics of the primary electron transfer reaction revealed by ultrafast spectroscopy on modified bacterial reaction centers [PDF]

, 1994
The modification of reaction centers from Rhodobacter sphaeroides by the introduction of pheophytins instead of bacteriopheophytins leads to interesting changes in the primary photosynthetic reaction: long-living populations of the excited electronic ...
Arlt, Thomas, Huber, H., Zinth, Wolfgang, Nägele, T., J. Wachtveitl, P. Hamm, Hamm, P., M. Meyer, W. Zinth, Meyer, M., Schmidt, Stefan, T. Arlt, H. Huber, Scheer, Hugo, Wachtveitl, J., H. Scheer, T. Nägele, S. Schmidt   +17 more
core   +1 more source

Evolutionary Implications of Anoxygenic Phototrophy in the Bacterial Phylum Candidatus Eremiobacterota (WPS-2)

Frontiers in Microbiology, 2019
Genome-resolved environmental metagenomic sequencing has uncovered substantial previously unrecognized microbial diversity relevant for understanding the ecology and evolution of the biosphere, providing a more nuanced view of the distribution and ...
Lewis M. Ward, Tanai Cardona, Hannah Holland-Moritz, Hannah Holland-Moritz   +3 more
doaj   +1 more source

Spectroscopic characterization of reaction centers of the (M)Y210W mutant of the photosynthetic bacterium Rhodobacter sphaeroides [PDF]

, 1994
The tyrosine-(M)210 of the reaction center of Rhodobacter sphaeroides 2.4.1 has been changed to a tryptophan using site-directed mutagenesis. The reaction center of this mutant has been characterized by low-temperature absorption and fluorescence ...
Arlt, Thomas, Noort, Paula I. van, Schmidt, Stefan, Otte, Stephan C. M., Zinth, Wolfgang, Vijgenboom, Erik, Gast, Peter, Hoff, Arnold J., Schelvis, Hans P. M., Shochat, Susana, Francke, Christof   +10 more
core   +1 more source

Experimental and computational investigation on underlying factors promoting high coke resistance in NiCo bimetallic catalysts during dry reforming of methane

Scientific Reports, 2021
Global warming remains one of the greatest challenges. One of the most prominent solutions is to close the carbon cycle by utilizing the greenhouse gas: CO2, and CH4, as a feedstock via the dry reforming of methane (DRM).
Tinnakorn Saelee, Mongkol Lerdpongsiripaisarn, Meena Rittiruam, Siriwimol Somdee, Anchittha Liu, Supareak Praserthdam, Piyasan Praserthdam   +6 more
doaj   +1 more source

Modified reaction centers from Rhodobacter sphaeroides R26 [PDF]

, 1990
Monomeric bacteriochlorophylls BA and BB in photosynthetic reaction centers from Rhodobacter sphaeroides R26 were exchanged with (132-hydroxy-) bacteriochlorophylls containing a 3-vinyl- or 3-(α-hydroxyethyl)-substituent instead of the 3-acetyl group ...
E. Cmiel, Struck, A., Scheer, Hugo, Cmiel, E., Cmiel, Edmund, Katheder, Ingrid, H. Scheer, A. Struck, I. Katheder, Scheer, H., Katheder, I.   +10 more
core   +1 more source

Effects of TiO2 structure and Co addition as a second metal on Ru-based catalysts supported on TiO2 for selective hydrogenation of furfural to FA

Scientific Reports, 2021
The TiO2 supported Ru-based catalysts were prepared with 1.5 wt% Ru and 0–0.8 wt% Co on various TiO2 (anatase, rutile, P-25, and sol–gel TiO2) and studied in the liquid-phase selective hydrogenation of furfural to furfuryl alcohol (FA) under mild ...
Weerachon Tolek, Natdanai Nanthasanti, Boontida Pongthawornsakun, Piyasan Praserthdam, Joongjai Panpranot   +4 more
doaj   +1 more source

Photosynthetic reaction centers

FEBS Letters, 1998
The reaction center is the key component for the primary events in the photochemical conversion of light into chemical energy. After excitation by light, a charge separation that spans the cell membrane is formed in the reaction center in a few hundred picoseconds with a quantum yield of essentially one.
Allen, J.P., Williams, J.C.
openaire   +2 more sources