biology
How Do Cells Use Membrane Rafts for Cell Signaling?
💡 The Answer
- Membrane rafts are cholesterol‑ and sphingolipid‑rich microdomains in the outer leaflet.
- They concentrate signaling receptors like GPCRs and receptor tyrosine kinases.
- Rafts facilitate efficient protein‑protein interactions and signal transduction cascades.
- Pathogens such as HIV also hijack rafts to enter and exit host cells.
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