Purification of lipid rafts from cultured cells.
Lipid-rich lipid rafts are microdomains of the plasma membrane that are resistant to low concentrations of nonionic detergent. This forms the basis for their isolation. Either a microsomal fraction or a postnuclear supernatant are loaded beneath a discontinuous iodixanol gradient. If all the solutions contain 0.5-1.0% Triton X-100, the intact lipid rafts float to the top of the gradient while all of the other detergent-solubilized membranes remain at the bottom.
Graham
John M
JM
School of Biomolecular Sciences, Liverpool John Moores University. john@jgrescon.fsbusiness.co.uk
D002458:Cell Fractionation / Q000379:methods*; D002478:Cells, Cultured; D002499:Centrifugation, Density Gradient; D021962:Membrane Microdomains