The Membranes of a Eukaryotic Cell |
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Authors: | WALTER PETER |
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Institution: | Department of Biochemistry and Biophysics, University of California Medical School San Francisco, California 94143-0448 |
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Abstract: | The evolution of internal membrane systems has introduced manyadditional control steps into pathways that, although basicallysimilar in prokaryotic cells, are less sophisticated and leavemany aspects up to chance. Temporal and spatial control of secretion,quality control of the proteins secreted or inserted into theplasma membrane, and exquisite control over the selective degradationof macromolecules, for example, are apparently indispensiblerequirements in multicellular organisms, but are relativelyunimportant in bacteria. Although complicated in detail, mostmembrane traffic in the eukaryotic cell can be reduced to afew basic principles. Such a reductionist's view provides aconceptual framework that allows the reader to organize an otherwiseoverwhelming amount of data on cellular membrane architectureand dynamics. |
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