Results 81 to 90 of about 917,628 (315)

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

FEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

Membrane potential-dependent calcium transport in right-side-out plasma membrane vesicles from Zea mays L. roots

, 1994
Right-side-out plasma membrane Vesicles isolated from Zea mays roots were used to study membrane potential (Delta Psi)-dependent Ca2+ transport. Membrane potentials were imposed on the vesicles using either K+ concentration gradients and valinomycin or ...
Jacqueline Marshall, Roger A. Leigh, Marshall, J., Dale Sanders, Leigh, R. A., Corzo, A., Sanders, D., Alfonso Corzo   +7 more
core   +1 more source

Cellular lipidomics [PDF]

, 2005
The cellular lipidome comprises over 1000 different lipids. Most lipids look similar having a polar head and hydrophobic tails. Still, cells recognize lipids with exquisite specificity.
van Meer, G., Membraan enzymologie, Membrane Enzymlogy 1, Dep Scheikunde, Membrane Enzymology   +4 more
core   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

FEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Polyvinylidene fluoride membrane modification via oxidant-induced dopamine polymerization for sustainable direct-contact membrane distillation

, 2018
Porous hydrophobic polyvinylidene fluoride (PVDF) membranes have been extensively used in direct-contact membrane distillation (DCMD) processes. However, these PVDF membranes are vulnerable to membrane fouling and pore wetting in low surface tension ...
Chandresh Malde, Rong Wang, Wang, Rong, Zhao, Shanshan, Chew, Nick Guan Pin, Shanshan Zhao, Malde, Chandresh, Nick Guan Pin Chew   +7 more
core   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

FEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson, Tomáš Gedeon, Mauricio Garcia Benitez, Campbell Putnam, William R. Harcombe, Radhakrishnan Mahadevan, Ashley E. Beck   +6 more
wiley   +1 more source

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

FEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez, Mikael Oliveberg, Peter Brzezinski   +2 more
wiley   +1 more source

Performance of asymmetric hollow fibre membranes in membrane distillation under various configurations and vacuum enhancement [PDF]

, 2010
Hollow fibre membrane distillation (MD) modules have a more compact structure than flat sheet membrane modules, providing potentially greater advantage in commercial applications.
Jianhua Zhang, Stephen Gray, Jun-De Li, Li, Jun-de, Xie, Zongli, Zhang, Jianhua, Gray, Stephen, Duke, Mikel, Zongli Xie, Gray, Stephen R, Mikel Duke   +10 more
core   +1 more source

Effect of Asymmetric Membrane Structure on Hydrogen Transport Resistance and Performance of a Catalytic Membrane Reactor for Ethanol Steam Reforming

, 2021
The performance of catalytic membrane reactors (CMRs) depends on the specific details of interactions at different levels between catalytic and separation parts.
Nikita Eremeev, Nadezhda Vernikovskaya, Vladislav Sadykov, Ludmilla Bobrova, Oleg Smorygo   +4 more
core   +1 more source

Peptide-Mediated Transport Across the Intact Tympanic Membrane Is Intracellular, with the Rate Determined by the Middle Ear Mucosal Epithelium

Biomolecules
The tympanic membrane forms an impenetrable barrier between the ear canal and the air-filled middle ear, protecting it from fluid, pathogens, and foreign material entry.
Arwa Kurabi, Yuge Xu, Eduardo Chavez, Vivian Khieu, Allen F. Ryan   +4 more
doaj   +1 more source