نتایج جستجو برای: bilayer flexibility
تعداد نتایج: 89111 فیلتر نتایج به سال:
this paper investigates the mechanism of water transportation through aquaporin-4(aqp4) of ratbrain cells by means of molecular dynamics simulation with charmm software. the aqp4 wasembedded into a bilayer made of dimystroilphosphatylcholine (dmpc). the results illustrate thatwater molecules move through aqp4's channel with change of orientation of oxygen of eachwater molecule.
A wide variety of phytochemicals are consumed for their perceived health benefits. Many of these phytochemicals have been found to alter numerous cell functions, but the mechanisms underlying their biological activity tend to be poorly understood. Phenolic phytochemicals are particularly promiscuous modifiers of membrane protein function, suggesting that some of their actions may be due to a co...
Hydration and stability of sulfatide-containing phosphatidylethanolamine small unilamellar vesicles.
The effect of sulfatide on membrane hydration of 1, 2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE) small unilamellar vesicles (SUVs) was investigated using steady-state and time-resolved fluorescence spectroscopy. The degree of hydration in the headgroup region of the bilayer lipids was assessed with the fluorescence lifetime of N-(5-dimethylaminonaphthalene-1-sulfonyl)dipalmitoylphosphatid...
The dengue virion is surrounded by an envelope of membrane proteins surrounding a lipid bilayer. We have combined the cryoelectron microscopy structures of the membrane proteins (PDB: 3J27) with a lipid bilayer whose composition is based on lipidomics data for insect cell membranes, to obtain a near-atomic resolution computational model of the envelope of the dengue virion. A coarse-grained mol...
A composite electrode made by association of gold and porous aluminum oxide has been used as template for a supported lipid bilayer. An oxide pore size of 170 nm was chosen so that lipid vesicles or proteoliposomes can enter in the pore and cover the pore wall. Triggered vesicle fusion produced a stable and continuous lipid bilayer supported on the large surface area of the honeycomb structure....
We present molecular dynamics simulation evidence for a freezing transition from liquid silicon to quasi-twodimensional (quasi-2D) bilayer silicon in a slit nanopore. This new quasi-2D polymorph of silicon exhibits a bilayer hexagonal structure in which the covalent coordination number of every silicon atom is four. Quantum molecular dynamics simulations show that the stand-alone bilayer silico...
The study concerns a novel contactless sensor system based on a multifunctional magnetostrictive bilayer material. The permeability of the bilayer ribbons is sensitive either to bending or temperature. The higher order harmonics which are generated by the bilayer in response to a magnetic interrogation field are detected. Their amplitudes depend on the bilayer’s permeability, hence on the quant...
In transmission electron micrography of few-layer thick graphene samples, two distinct regions, a region of superlattice and an adjacent region of parallel straight bands, are seen. These two features are explained as Moire patterns produced by (1) rotation of top part of one of the graphene layers and (2) a small change in the shape of the bottom part of the same layer. It is interesting to no...
Chuanwei Zhang,1 Sumanta Tewari,2 and S. Das Sarma3 1Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, USA 2Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634, USA 3Department of Physics, Condensed Matter Theory Center, University of Maryland, College Park, Maryland 20772, USA Received 12 January 2009; revised manusc...
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