Results 71 to 80 of about 17,774,292 (335)

Interaction of Potent Mitochondrial Uncouplers with Thiol-Containing Antioxidants

open access: yesAntioxidants, 2019
It is generally considered that reactive oxygen species (ROS) are involved in the development of numerous pathologies. The level of ROS can be altered via the uncoupling of oxidative phosphorylation by using protonophores causing mitochondrial membrane ...
Ljudmila S. Khailova   +3 more
doaj   +1 more source

Statistical mechanics of a colloidal suspension in contact with a fluctuating membrane

open access: yes, 2004
Surface effects are generally prevailing in confined colloidal systems. Here we report on dispersed nanoparticles close to a fluid membrane. Exact results regarding the static organization are derived for a dilute solution of non-adhesive colloids. It is
A.A. Louis   +10 more
core   +2 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Detecting and Estimating Signals in Noisy Cable Structures, II: Information Theoretical Analysis [PDF]

open access: yes, 1999
This is the second in a series of articles that seek to recast classical single-neuron biophysics in information-theoretical terms. Classical cable theory focuses on analyzing the voltage or current attenuation of a synaptic signal as it propagates from ...
Koch, Christof, Manwani, Amit
core   +2 more sources

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Attempts to retreat from a dead-ended long capillary by backward swimming in Paramecium

open access: yesFrontiers in Microbiology, 2014
We have observed how the ciliate Paramecium attempts to retreat from the dead-end of a long capillary that is too narrow for turning. After many trial-and-error episodes of short-term backward swimming (SBS), which is the conventional avoidance behavior ...
Itsuki eKunita   +3 more
doaj   +1 more source

A Promising Method for the Determination of Cell Viability: The Membrane Potential Cell Viability Assay

open access: yesCells, 2022
Determining the viability of cells is fraught with many uncertainties. It is often difficult to determine whether a cell is still alive, approaching the point of no return, or dead. Today, there are many methods for determining cell viability.
Eneko Madorran   +4 more
doaj   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Study to elucidate effect of titanium dioxide nanoparticles on bacterial membrane potential and membrane permeability

open access: yesMaterials Research Express, 2020
The interaction of metal oxide nanoparticles (NPs) with cells and lipid bilayers is precarious in various fields such as antibacterial and drug or gene delivery.
Maya S Khater   +4 more
doaj   +1 more source

Real-time monitoring of proton exchange membrane fuel cell stack failure [PDF]

open access: yes, 2016
Uneven pressure drops in a 75-cell 9.5-kWe proton exchange membrane fuel cell stack with a U-shaped flow configuration have been shown to cause localised flooding.
Brandon, NP   +5 more
core   +2 more sources

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