منابع مشابه
Biological membranes
Biological membranes allow life as we know it to exist. They form cells and enable separation between the inside and outside of an organism, controlling by means of their selective permeability which substances enter and leave. By allowing gradients of ions to be created across them, membranes also enable living organisms to generate energy. In addition, they control the flow of messages betwee...
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Biological membranes play an essential role in the cellular protection as well as in the control and the transport of nutrients. Many mechanisms such as molecular recognition, enzymatic catalysis, cellular adhesion and membrane fusion take place into the biological membranes. In 1972, Singer et al. provided a membrane model, called fluid mosaic model, in which each leaflet of the bilayer is for...
متن کاملMembranes: Shaping biological matter.
173 news & views t he space occupied by living organisms is determined by membranes. Each cell is delimited by a membrane, and additional membranes form the functional hierarchy of compartments packed within it. The intracellular compartments, for example vesicles and organelles, define the spatial organization of metabolic pathways, thus providing the topological framework for cellular life. R...
متن کاملElectroporation of Biological Membranes
In recent years, manipulation of biological cells and cell tissue by external electric fields gains increasing importance for biophysics and cell biology in general and in biotechnology and medicine in particular. Especially, the method of electroporation has become a powerfool tool for cell manipulations. In electroporation cells are subjected to a pulsed high-voltage electric field, resulting...
متن کاملStability of MultiComponent Biological Membranes
Equilibrium equations and stability conditions are derived for a general class of multicomponent biological membranes. The analysis is based on a generalized Helfrich energy that accounts for geometry through the stretch and curvature, the composition, and the interaction between geometry and composition. The use of nonclassical differential operators and related integral theorems in conjunctio...
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ژورنال
عنوان ژورنال: Essays in Biochemistry
سال: 2015
ISSN: 0071-1365,1744-1358
DOI: 10.1042/bse0590043