, showing purified G3BP and RNA forming droplets in a controlled laboratory setting.
, such as droplets fusing together or recovering after being bleached by a laser (FRAP). g8046.mp4
: Under normal conditions, G3BP is in a compact, "auto-inhibited" state. , showing purified G3BP and RNA forming droplets
of stress granules forming in living HeLa cells. of stress granules forming in living HeLa cells
This research is significant because it explains how cells quickly organize their internal machinery to survive harsh conditions, a process linked to neurodegenerative diseases when it goes awry.
: When the cell is stressed, unfolded RNA molecules bind to G3BP, causing it to expand and cluster together. This leads to the formation of liquid-like droplets (condensates) that sequester mRNA. Usage in the Study
: The protein G3BP (GTPase-activating protein-binding protein) acts as a central "node" or switch for granule formation.