Results 61 to 70 of about 5,746,488 (258)
Dramatic red fluorescence enhancement and emission red shift of carbon dots following Zn/ZnO ...
Xie, Aming +4 more
core +1 more source
Red-shift of stimulated emission in ZnSe-based semiconductors
, 1998 A red-shift in the stimulated emission wavelength with increasing intensity is observed using picosecond laser excitation of molecular-beam-epitaxial ZnSe epilayers and ZnSe-based quantum-well structures.
Wherrett, B. S. +11 more
core +1 more source
A Hydrogen Bond Between Linear Tetrapyrrole and Conserved Aspartate Causes the Far-Red Shifted Absorption of Phytochrome Photoreceptors [PDF]
, 2020 Photoswitching of phytochrome photoreceptors between red-absorbing (Pr) and far-red absorbing (Pfr) states triggers light adaptation of plants, bacteria and other organisms. Using quantum chemistry, we elucidate the color-tuning mechanism of phytochromes
Tatiana, Domratcheva, Egle, Maximowitsch
core +2 more sources
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
Ground survey of red lechwe in the Linyanti swamps and Chobe floodplains, northern Botswana
Koedoe: African Protected Area Conservation and Science, 2017 A ground survey of red lechwe was carried out in the Linyanti swamps and the Chobe floodplains of northern Botswana in the dry and wet seasons of 2012 and 2013, respectively.
Phemelo Gadimang, Gaseitsiwe S. Masunga
doaj +1 more source
Peak Shift in Remembering [PDF]
, 2003 If remembering is discriminative behaviour along the dimension of time and if, as Sargisson and White (2001) argued, generalisation around a peak can occur in this behaviour, then the peak shift which has been shown in discrimination along so many other ...
Hoan, Andros
core
, 2015 Solvent effects on the UV/vis spectra of metallopthalocyanines (MPcs) have been interpreted using the red-shift index concept (R (s) I). The concept connects empirically, direct, experimental, easily accessible optical spectral data, which are explained ...
Akpe, Victor, +9 more
core +1 more source
FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source
FEBS Letters, EarlyView.How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley +1 more source
Anion-Responsive Colorimetric and Fluorometric Red-Shift in Triarylborane Derivatives: Dual Role of Phenazaborine as Lewis Acid and Electron Donor [PDF]
Photophysical modulation of triarylboranes (TABs) through Lewis acid-base interactions is a fundamental approach in sensing anions. Yet, design principles for anion-responsive TABs displaying significant red-shift in absorption and photoluminescence (PL)
Riku, Nakagawa +6 more
core +2 more sources