Abstract
The plasma membrane of a cell separates its interior from the extracellular environment and from other cells and acts both as a diffusional barrier and as an electrical insulator. This allows differentiation of cells with specialized functions. Coordinated behavior of multicellular organisms requires exchange of signals between individual cells. Because the signal must be transferred from one cell to another, it must occur by a mechanism that allows it to traverse the insulating cell membrane. Signaling occurs in various ways via specific receptors on the receiving cells and subsequent generation of a transmembrane signal. The nervous system connects cells in a very specific way, and signal transmission between individual cells takes place at contacts, called synapses, that are anatomically and functionally highly specialized.
With permission of the Nobel Foundation 1992
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Abbreviations for the amino acid residues are the following: A, Ala; C., Cys; D, Asp; E, Glu; F, Phe; G, Gly; H, His; I, lle; K, Lys; L, Leu; M, Met; N, Asn; P, Pro; O, Gln; R, Arg; S, Ser; T, Thr; V, Val; W, Trp; and Y, Tyr
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I am greatly indebted to my teachers in physiology, O. Creutzfeldt and B. Katz, and to the Max-Planck-Gesellschaft for providing ideal research conditions. During the last 5 years I was supported by the Leibniz Programm of the Deutsche Forschungsgemeinschaft and by an award of the Fondation Louis Jeantet, Geneva.
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Sakmann, B. (1993). Elementary Steps in Synaptic Transmission Revealed by Currents Through Single Ion Channels. In: Schettler, G., Greten, H., Habenicht, A.J.R. (eds) Cellular Metabolism of the Arterial Wall and Central Nervous System. Sitzungsberichte der Heidelberger Akademie der Wissenschaften, vol 1993/94 / 1993/1. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-84949-7_1
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