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Chemistry, 02.06.2020 17:59 tatedason33741

The original fluid mosaic model stated that membrane proteins move freely in the plane of the lipid bilayer via lateral diffusion "like protein icebergs in a sea of lipids." Since its initial description in 1927, the fluid mosaic model has been refined.
Complete the statements that describe some of the refinements of the fluid mosaic model as it relates to protein mobility.
Choose the answer that best completes each sentence:
Membrane (lipid) rafts, Vesicles, Cytoskeletal elements, Protein-protein interactions, Bilayer leaflets.
1) may form a locally rigid, non-lipid matrix surrounded by the fluid lipid matrix.
2) , membrane domains rich in sphingolipids and cholesterol, are regions with reduced lipid and protein mobility.
3) can be attached to proteins or can "fence in" proteins, reducing protein mobility.

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