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#membrane research

2 public questions tagged with this topic.

Properties of Plasma Membrane

Which experimental technique is used to study lipid movement in membranes?

Experimental investigation of lipid dynamics in plasma membranes of living cells requires fluorescence techniques capable of micrometer spatial resolution and millisecond temporal. FRAP fluorescence recovery after photobleaching involves incorporating fluorescent lipid analogs NBD-phosphatidylethanolamine BODIPY-phosphatidylcholine DiI dialkylcarbocyanine into bilayer at low mole fraction, or fluorescent protein fusions GFP-tagged for proteins. Focused laser beam bleaches circular spot one to four micrometer diameter irreversible photodestruction, subsequent recovery of fluorescence intensity

Ref: Axelrod et al., Fluorescence Recovery After Photobleaching FRAP Method, Biophys J 1976.

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Eukaryotic Cell - Cell Wall and Cell Membrane - Fluid Mosaic Model

Scientists are attempting to determine the organisation of a cell membrane rather than merely observe the external outli

Detailed membrane structure became accessible with electron microscopy, while chemical and biochemical studies—especially of erythrocyte membranes—revealed lipids, proteins, cholesterol and carbohydrates. Together, these findings supported models of bilayer organisation and membrane proteins.

Ref: NCERT Class 11 Biology Chapter 8: Cell: The Unit of Life Eukaryotic Cell - Cell Wall and Cell Membrane - Fluid Mosaic Model

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