Zone melting as a model for active transport across the cell membrane |
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| Authors: | C T Dragomir |
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| Affiliation: | 1. Department of Pharmaceutical and Toxicological Chemistry Named After Arzamastsev of the Institute of Pharmacy, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow 119991, Russia;2. School of Pharmacy and Biomedical Sciences, La Trobe Institute for Molecular Sciences, La Trobe University, Edwards Rd, Bendigo 3550, Australia;1. MOE Key Laboratory of Macromolecular Synthesis and Functionalization, State Key Laboratory of Silicon Materials, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China;2. Department of Applied Physics and Materials Research Centre, The Hong Kong Polytechnic University, Hong Kong, China;3. Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China;1. Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu, Kitakyushu 808-0196, Japan;2. Research Center for Advanced Eco-fitting Technology, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu, Kitakyushu 808-0196, Japan;3. Department of Computer Science and Electronics, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka, 820-8502, Japan |
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| Abstract: | The process of zone melting, employed in semiconductor material purification, served as an analogy for building a model of active transport. The analogy resorted to is consistent with some models worked-out previously for cell membranes, which imply a phase transition in the membrane on shifting from the resting state to the depolarized one and vice versa. Admitting, in addition, the occurence of some phase-transition which is propagated in an orderly fashion in space at the level of the cell membrane pores, the state of thermodynamic non-equilibrium may be explained as to the ion and molecules distribution patterns. The assumptions emerging from this idea are discussed in correlation with a series of other features of membrane behaviour. A variety of membrane phenomena can be approached at the expense of a sole physical phenomenon. |
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