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Biochemistry chapter 11

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Question:

Describe the Fluid Mosaic Model of Membranes, composition, asymmetry?

Author: Shay 1vcc



Answer:

Proposed in 1972 by Singer and Nicholson (UCSD) • Lipids form a viscous, two-dimensional solvent into which proteins are inserted and integrated more or less deeply • Integral proteins are firmly associated with the membrane, often spanning the bilayer • Peripheral proteins are weakly associated and can be removed easily – Some are noncovalently attached – Some are linked to membrane lipids Integral proteins float in this sea of lipid. • Two leaflets have different lipid compositions • Outer leaflet is often more positively charged


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Shay 1vcc
Shay 1vcc