Journal ArticleDOI
Functional rafts in cell membranes
Kai Simons,Elina Ikonen +1 more
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A new aspect of cell membrane structure is presented, based on the dynamic clustering of sphingolipids and cholesterol to form rafts that move within the fluid bilayer that function as platforms for the attachment of proteins when membranes are moved around inside the cell and during signal transduction.Abstract:
A new aspect of cell membrane structure is presented, based on the dynamic clustering of sphingolipids and cholesterol to form rafts that move within the fluid bilayer. It is proposed that these rafts function as platforms for the attachment of proteins when membranes are moved around inside the cell and during signal transduction.read more
Citations
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Journal ArticleDOI
Cell signaling by receptor-tyrosine kinases
TL;DR: Understanding of the complex signaling networks downstream from RTKs and how alterations in these networks are translated into cellular responses provides an important context for therapeutically countering the effects of pathogenic RTK mutations in cancer and other diseases.
Journal ArticleDOI
Lipid rafts and signal transduction
Kai Simons,Derek Toomre +1 more
TL;DR: It is now becoming clear that lipid micro-environments on the cell surface — known as lipid rafts — also take part in this process of signalling transduction, where protein–protein interactions result in the activation of signalling cascades.
Journal ArticleDOI
Lipid Rafts As a Membrane-Organizing Principle
Daniel Lingwood,Kai Simons +1 more
TL;DR: The evidence for how this principle combines the potential for sphingolipid-cholesterol self-assembly with protein specificity to selectively focus membrane bioactivity is reviewed.
Journal ArticleDOI
Rab proteins as membrane organizers
Marino Zerial,Heidi M. McBride +1 more
TL;DR: Cellular organelles in the exocytic and endocytic pathways have a distinctive spatial distribution and communicate through an elaborate system of vesiculo-tubular transport.
Journal ArticleDOI
Functions of lipid rafts in biological membranes.
Deborah A. Brown,Erwin London +1 more
TL;DR: The relationship between detergent-resistant membranes, rafts, caveolae, and low-density plasma membrane fragments, and possible functions of lipid rafts in membranes are discussed.
References
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Journal ArticleDOI
The fluid mosaic model of the structure of cell membranes.
S. J. Singer,Garth L. Nicolson +1 more
TL;DR: Results strongly indicate that the bivalent antibodies produce an aggregation of the surface immunoglobulin molecules in the plane of the membrane, which can occur only if the immunoglOBulin molecules are free to diffuse in the membrane.
Journal ArticleDOI
Sorting of GPI-anchored proteins to glycolipid-enriched membrane subdomains during transport to the apical cell surface
Deborah A. Brown,John K. Rose +1 more
TL;DR: It is shown that a protein with a glycosylphosphatidyl inositol (GPI) anchor can be recovered from lysates of epithelial cells in a low density, detergent-insoluble form, supporting the model proposed by Simons and colleagues for sorting of certain membrane proteins to the apical surface after intracellular association with glycosphingolipids.
Book ChapterDOI
THE FLUID MOSAIC MODEL OF THE STRUCTURE OF CELL MEMBRANES Reprinted with permission from Science, Copyright AAA, 18 February 1972, Volume 175, pp. 720–731.
S. J. Singer,Garth L. Nicolson +1 more
TL;DR: Results strongly indicate that the bivalent antibodies produce an aggregation of the surface immunoglobulin molecules in the plane of the membrane, which can occur only if the immunoglOBulin molecules are free to diffuse in the membrane.
Journal ArticleDOI
Lipid sorting in epithelial cells.
Kai Simons,G. van Meer +1 more
TL;DR: Lipid biochemistry has remained a fairly esoteric branch of molecular cell biology, but this situation is now gradually changing with the discovery of phosphoinositide involvement in signal transduction.
Journal ArticleDOI
Protein Sorting by Transport Vesicles
TL;DR: Eukaryotic life depends on the spatial and temporal organization of cellular membrane systems and general principles that underlie a broad variety of physiological processes, including cell surface growth, the biogenesis of distinct intracellular organelles, endocytosis, and the controlled release of hormones and neurotransmitters.
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Sorting of GPI-anchored proteins to glycolipid-enriched membrane subdomains during transport to the apical cell surface
Deborah A. Brown,John K. Rose +1 more