Results 171 to 180 of about 14,080 (252)

Time-dependent density functional theory molecular dynamics simulation of doubly charged uracil in gas phase

open access: yesOpen Physics, 2014
López-Tarifa Pablo   +11 more
doaj   +1 more source

Coordination of drought‐adaptive root growth plasticity through auxin homeostasis by the ZmSPL12–ZmYUC5 module in maize

open access: yesNew Phytologist, EarlyView.
Proposed model of ZmSPL12‐mediated drought resistance through auxin regulation. Summary Climate change‐induced drought increasingly threatens global maize production. Drought‐adaptive root plasticity in maize depends on auxin signaling, yet how auxin homeostasis is dynamically tuned in response to water deficit remains unclear.
Hua Xu   +18 more
wiley   +1 more source

The OsWRKY15‐OsSUT3 Regulatory Module Enhances Rice Pollen Fertility by Mediating Sucrose Allocation to Anthers

open access: yesPlant Biotechnology Journal, EarlyView.
ABSTRACT Sucrose transport and starch accumulation are crucial carbohydrate metabolic processes in rice, playing essential roles during late pollen development to ensure pollen maturation, fertility and high grain production. However, the molecular mechanisms regulating sucrose transport and starch accumulation during rice pollen development remain ...
Qiuping Li   +10 more
wiley   +1 more source

Resolution and Quantitation of Ribonucleosides and Deoxyribonucleosides in Digested Genomic DNA by UHPLC–MS/MS

open access: yesBiomedical Chromatography, Volume 40, Issue 10, October 2026.
ABSTRACT Deoxyuridine (dUrd) is often misincorporated into genomic DNA in cancer patients receiving antimetabolite chemotherapy. This activates base excision repair and recruits ataxia telangiectasia‐mutated and Rad3‐related (ATR), which coordinates DNA repair with nucleotide metabolism by facilitating ribonucleotide reductase (RNR) activity ...
Joshua J. Deppas   +5 more
wiley   +1 more source

Chemical Kinetics of 2‐, 4‐, and 2,4‐Seleno‐Uracils at Low Temperatures: Tautomerizations and Rotamerizations on Inert Matrices

open access: yesInternational Journal of Chemical Kinetics, Volume 58, Issue 10, Page 881-889, October 2026.
ABSTRACT In the interstellar medium, chemical reactions proceed under conditions vastly different to those on Earth; these include extremely low temperatures and densities and take place in the gas phase and on water–ice grains. Understanding the energetics and more importantly the kinetics of such reactions is of relevance to the consequences on how ...
Judith Wurmel, John M. Simmie
wiley   +1 more source

Characterization of carABpyrB operon and role of pyrE in Francisella novicida biofilm

open access: yesMicrobiologyOpen, Volume 15, Issue 5, October 2026.
Pyrimidine biosynthesis links metabolism to biofilm regulation in Francisella novicida. During nutrient limitation, reduced pyrimidine availability shifts metabolism from uracil salvage to de novo synthesis, increasing biofilm formation. Mutants in carABpyrB exhibit uracil‐dependent growth defects and elevated biofilm:growth ratios, revealing ...
Katie C. Sprinkel   +2 more
wiley   +1 more source

Interrogating the Escherichia coli Epitranscriptome Via CRISPR Interference and Nanopore Native RNA Sequencing

open access: yesMicrobiologyOpen, Volume 15, Issue 5, October 2026.
Epitranscriptomics is understudied in bacteria but has the ability to modulate antimicrobial resistance, virulence and pathogenicity. Pitt et al. implement two cutting‐edge techniques: CRISPR interference and Nanopore direct RNA sequencing along with functional assays to study RNA modifications in Escherichia coli.
Miranda E. Pitt   +8 more
wiley   +1 more source

Mucosal‐Associated Invariant T Cells in Health and Disease

open access: yesMedComm, Volume 7, Issue 10, October 2026.
The roles of MAIT cells in health and disease and their therapeutic applications. In healthy individuals, riboflavin metabolites secreted by commensal bacteria at mucosal sites are presented by MR1, leading to the activation of MAIT cells. Activated MAIT cells can maintain the barrier integrity of mucosal tissues in a steady state or migrate to the ...
Yu Zhao   +5 more
wiley   +1 more source

A bacterial protein inhibitor of dUTPase disrupts zebrafish embryogenesis through a conserved active‐site mechanism

open access: yesProtein Science, Volume 35, Issue 10, October 2026.
Abstract Deoxyuridine triphosphatase (dUTPase) is essential for DNA replication fidelity and embryonic development in metazoa, yet whether a protein inhibitor can acutely disrupt dUTPase function in a living vertebrate has not been tested. The Staphylococcus aureus Stl protein inhibits diverse dUTPases in vitro, but its efficacy in a eukaryotic ...
Viktória Perey‐Simon   +7 more
wiley   +1 more source

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