Results 91 to 100 of about 11,137,717 (304)

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

TRPtracker: a community database for monitoring praziquantel sensitivity at TRPMPZQ variants

open access: yesInternational Journal for Parasitology: Drugs and Drug Resistance
The anthelmintic praziquantel (PZQ) has been used for decades as the clinical therapy for schistosomiasis, and remains the only available drug. As a cheap and effective drug therapy for all human disease-causing Schistosoma species, usage of PZQ ...
Claudia M. Rohr   +26 more
doaj   +1 more source

Potentiated L-type Ca2+ Channels Rectify [PDF]

open access: yesThe Journal of General Physiology, 2003
Strong depolarization and dihydropyridine agonists potentiate inward currents through native L-type Ca2+ channels, but the effect on outward currents is less clear due to the small size of these currents. Here, we examined potentiation of wild-type α1C and two constructs bearing mutations in conserved glutamates in the pore regions of repeats II and IV
Leuranguer, Valérie   +2 more
openaire   +2 more sources

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

open access: yesFEBS 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   +6 more
wiley   +1 more source

Firing Pattern Formation by Transient Calcium Current in Model Motoneuron

open access: yesNonlinear Analysis, 2000
Firing properties of neurons are important in signal detection and generation in nervous system. Spinal cord motoneurons have membrane properties adapted to muscle properties.
N. Svirskienė, G. Svirskis
doaj   +1 more source

Transient receptor potential channels in Alzheimer's disease

open access: yesBiochimica et Biophysica Acta (BBA) - Molecular Basis of Disease, 2007
Cognitive impairment and emotional disturbances in Alzheimer's disease (AD) result from the degeneration of synapses and neuronal death in the limbic system and associated regions of the cerebral cortex. An alteration in the proteolytic processing of the amyloid precursor protein (APP) results in increased production and accumulation of amyloid beta ...
Yamamoto, Shinichiro   +4 more
openaire   +2 more sources

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

CaMKII regulation of cardiac K channels

open access: yesFrontiers in Pharmacology, 2014
Cardiac K channels are critical determinants of cardiac excitability. In hypertrophied and failing myocardium, alterations in the expression and activity of voltage-gated K currents are frequently observed and contribute to the increased propensity for ...
Julian eMustroph   +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

Functional evidence of Hv1-mediated proton flux in cardiac mitochondria

open access: yesChannels
Mitochondria are essential for cardiac myocyte function, providing the continuous ATP supply required for contraction and cellular homeostasis. Regulation of the proton motive force, which is critical for ATP synthesis, depends on multiple ion transport ...
Rayen De Fazio   +5 more
doaj   +1 more source

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