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Contents (Volume 7A). List of Contributors. Preface (E.E. Bittar and N. Bittar). Model Membrane Systems (T. Madden). Lipid-Bilayer Heterogeneity (K. Jorgensen, I. Ipsen, and O.G. Mouritsen). Lipid-Protein Interactions in Biological Membranes (P. Burn and B. Carbonare). Lipid Modifications of Proteins and its Relevance to Protein Targeting (P. Zlatkine and A. Magee). The Influence of Dietary Fat on Membranes (M.T. Clandinin). Membrane Fusion and Exocytosis (C. Creutz). Endoxytosis (T. Wileman). Signal Peptides (M.O. Lively). Proteolysis in Protein Import and Export (M. Muller). Membrane Traffic and Sorting (S. Rothman). Molecular Genetics and Evolution of Voltage Gated Channels (L. Salkoff and T. Jegla). Molecular Biology of Voltage-Gated Ionic Channels: Structure Function Relationships (D. Gordon). Ligand-Gated Ion Channels in Vertebrates (N. Eshhar).
Contents (Volume 7B). List of Contributors. Preface (E.E. Bittar and N. Bittar). Mechano-Sensitive Channels (C.E. Morris). Patch Clamping Methods and Analysis of Ion Channels (N.B. Standen, N.W. Davies, and P.R. Stanfield). Functional Expression of Ionic Channels and Membrane Transporters in Xenopus Oocytes (S.M. Jarvis). The Plasma Membrane as A Transducer and Amplifier (D.A. Severson and M.D. Hollenberg). G-Protein Couples Receptors and Hormone Secretion (G.J. Law, M. Rupnik, R. Zorec, P.M. Lledo, and W.T. Mason). The Role of ras in Signal Transduction (A. Hall). The Polyphosphoinositide Signaling System (A.A. Abdel-Latif). Other Lipids as Second Messengers (Y.A. Hannun). The Role of Intracellular Calcium as a Regulatory System (J.R. Dedman and M.A. Kaetzel). The Role of Guanylyl Cyclases as Signal Transducing Enzymes (D. Koesling). Stimulus-Response Coupling in Secretory Cells (O.H. Petersen). Cell INteractions with Extracellular Matrices (L.A. Culp, K.L. O'Connor, and S.D. Walker). Intercellular Communication (W.H. Evans). Index.
It should not come as too much of a surprise that biological membranes are considerably more complex than lipid bilayers. This has been made quite clear by the fluid-mosaic model which considers the cell membrane as a two-dimensional solution of a mosaic of integral membrane proteins and glycoproteins firmly embedded in a fluid lipid bilayer matrix. Such a model has several virtues, chief among which is that it allows membrane components to diffuse in the plane of the membrane and orient asymmetrically across the membrane. The model is also remarkable since it provokes the right sort of questions. Two such examples are: Does membrane fluidity influence enzyme activity? Does cholesterol regulate fluidity? However, it does not go far enough. As it turns out, there is now another version of this model, the so-called post-fluid mosaic model which incorporates two concepts, namely the existence in the membrane of discrete domains in which specific lipid-lipid, lipid-protein and protein-protein interactions occur and ordered regions that are in motion but remain separate from less ordered regions. We must admit that both are intriguing problems and of importance in guiding our thinking as to what the next model might be. We have chosen not to include the subject of membrane transport in the present volume. This obviously represents a break with convention. However, the intention is to have the topic covered subsequent volumes relating to organ systems. It would be right to regard this as an attempt to strengthen the integrated approach to the teaching of medicine.
- No. of pages:
- © Elsevier Science 1997
- 12th May 1997
- Elsevier Science
- Hardcover ISBN:
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Department of Physiology, University of Wisconsin Medical School, Madison, USA