Results 51 to 60 of about 10,552,896 (248)

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

open access: yesFEBS 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

Quantum chemical determination of molecular geometries and spectral investigation of 4-ethoxy-2, 3-difluoro benzamide

open access: yesHeliyon, 2019
The present work reports the application of density functional theory (DFT) at B3LYP with various basis sets which provide the relationship between the structural and spectral properties of 4-ethoxy-2, 3-difluoro benzamide (4EDFB). A Complete vibrational
V. Vidhya, A. Austine, M. Arivazhagan
doaj   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

SINGLET OXYGEN QUANTUM YIELD OF ZINC AND COPPER TETRACARBOXYPHTHALOCYANINE: EXPERIMENTAL AND THEORETICAL STUDY

open access: yesProspectiva, 2022
The metal-phthalocyanine coordination complexes can absorb visible light with great efficiency. Besides, these compounds have prolific catalytic activity in multiple reactions e.g. electron and/or energy transfer reactions. The singlet oxygen production
Jesús Peña   +2 more
doaj   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Mechanisms and therapeutic opportunities of the ribotoxic stress response in cancer

open access: yesMolecular Oncology, EarlyView.
Cancer cells' high translational demand creates opportunities to therapeutically target ribosome function. Ribosome stalling and collisions activate ZAKα and the ribotoxic stress response (RSR), which can trigger rapid, p53‐independent apoptosis in cancer.
Anastassiya Kim   +7 more
wiley   +1 more source

Electrodynamical Coupling of Earth's Atmosphere and Ionosphere: An Overview

open access: yesInternational Journal of Geophysics, 2011
Electrical processes occurring in the atmosphere couple the atmosphere and ionosphere, because both DC and AC effects operate at the speed of light. The electrostatic and electromagnetic field changes in global electric circuit arise from thunderstorm ...
A. K. Singh   +3 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Cavity-Free Quantum-Electrodynamic Electron Transfer Reactions [PDF]

open access: yes, 2022
Richard Feynman stated that ‘The theory behind chemistry is quantum electrodynamics’. However, harnessing quantum-electrodynamic (QED) effects to modify chemical reactions is a grand challenge and currently has only been reported in experiments using ...
Yu-Chen, Wei, Liang-Yan, Hsu
core   +1 more source

Optimizing CO production in electrocatalytic CO2 reduction via electron accumulation at Ni sites in Ni3ZnC0.7/Ni on N-doped carbon nanofibers

open access: yesGreen Energy & Environment
The electrocatalytic reduction of carbon dioxide (CO2RR) to valuable products presents a promising solution for addressing global warming and enhancing renewable energy storage.
Min Wang   +8 more
doaj   +1 more source

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