EAN: | 9781461412212 |
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Sachgruppe: | Medizin |
Sprache: | Englisch |
Seitenzahl: | 184 |
Produktart: | Gebunden |
Herausgeber: | Frank, Philippe Jasmin, Jean-François Lisanti, Michael P |
Veröffentlichungsdatum: | 30.01.2012 |
Untertitel: | Roles in Signaling and Disease Mechanisms |
Schlagworte: | Medical / Nursing |
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Caveolae are 50-100 nm flask-shaped invaginations of the plasma membrane that are primarily composed of cholesterol and sphingolipids. Using modern electron microscopy techniques, caveolae can be observed as omega-shaped invaginations of the plasma membrane, fully-invaginated caveolae, grape-like clusters of interconnected caveolae (caveosome), or as transcellular channels as a consequence of the fusion of individual caveolae. The caveolin gene family consists of three distinct members, namely Cav-1, Cav-2 and Cav-3. Cav-1 and Cav-2 proteins are usually co-expressed and particularly abundant in epithelial, endothelial, and smooth muscle cells as well as adipocytes and fibroblasts. On the other hand, the Cav-3 protein appears to be muscle-specific and is therefore only expressed in smooth, skeletal and cardiac muscles. Caveolin proteins form high molecular weight homo- and/or hetero-oligomers and assume an unusual topology with both their N- and C-terminal domains facing the cytoplasm.