Results 61 to 70 of about 2,690,978 (249)

Does Momentum Matter? Modeling Stock Returns through Fama-French and Carhart Model for Pakistan Stock Exchange

Business Review
Asset pricing models are widely applied for explaining variations in stock returns. The applicability of these models is tested on different markets for assessing different stock price anomalies.
Mirza Osama Bin Shahid , AbdurRahman Aleemi, Muhammad AsadUllah   +2 more
doaj   +1 more source

The effect of elicitors on oleanolic acid accumulation and expression of triterpenoid synthesis genes in Gentiana straminea

Biologia Plantarum, 2013
Gentiana straminea is native to the Qinghai-Tibet plateau, where it is exposed to extremes of cold and strong UV-B radiation. Here we showed that low temperature, but not UV-B radiation, affected the accumulation of the triterpenoid oleanolic acid ...
Z. -J. Zhao, Y. -G. Song, Y. -L. Liu, M. Qiao, X. -L. Zhai, F. -N. Xiang   +5 more
doaj   +1 more source

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, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Knockout mutants of Arabidopsis thaliana β-galactosidase. Modifications in the cell wall saccharides and enzymatic activities

Biologia Plantarum, 2018
This work studied the six β-galactosidases (BGALs) of the subfamily a1 of Arabidopsis, that have been proposed to play important roles in the cell wall remodelling during plant development, although their precise functions are still unknown.
M. Moneo-Sánchez, L. Izquierdo, I. Martín, J. Hernández-Nistal, L. Albornos, B. Dopico, E. Labrador   +6 more
doaj   +1 more source

Observation of the ψð3686ß decays into Σ+ Σ - ω and Σ+ Σ - φ

, 2023
Based on (2712.4 +/- 14.3) x 106 events recorded at the psi(3686) nominal mass collected with the BESIII detector operating at the BEPCII collider, the psi(3686) -> E +/- E over bar -omega and E +/- E over bar -phi decays are observed for the first time with statistical significances of 13.8 sigma and 7.6 sigma, respectively.
Ablikim, M., Adlarson, Patrik, Johansson, Tord, Kupsc, Andrzej, Schönning, Karin, Thoren, V., Wolke, Magnus, Zu, J.   +7 more
openaire   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

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, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

β

JACC: Basic to Translational Science
Summary: We found β 1 -adrenergic receptor autoantibodies—prevalent in heart failure—trigger expansion of cytotoxic CD4 + CD28 – T cells via a noncanonical β 1 -AR/Gi pathway, driving cardiac dysfunction and arrhythmias.
Fei Sun, BSc, Jingyi Liu, MD, Xiaotong Zhang, BS, Ruiqi Hou, BS, Ye Wu, PhD, Junyan Yao, BS, Xin Zhang, BS, Bingjie Li, PhD, Xiang Cheng, MD, Suli Zhang, PhD, Huirong Liu, PhD   +10 more
doaj   +1 more source

Isolation and molecular characterization of pathogenesis related PR2 gene and its promoter from Brassica juncea

Biologia Plantarum, 2017
Pathogenesis-related (PR) proteins play key roles in plant disease resistance. Here, we isolated and characterized pathogenesis-related PR2 gene encoding β-1,3-glucanase from Brassica juncea and named it BjPR2 (GenBank accession number DQ359125).
S. Ali, N. Chandrashekar, S. Rawat, N. M. C. Nayanakantha, Z. A. Mir, A. Manoharan, M. Sultana, A. Grover   +7 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source