Sci. STKE, 23 November 2004
IMAGING Now You See It, Now You Don't
Existing fluorescent protein highlighting techniques are irreversible and preclude repeated monitoring of the same protein to study its temporal regulation. Within cells, protein movement is regulated by many different factors and may be altered by changes in the cellular state. Measurements of protein dynamics are affected by the geometry of both the cells and the highlighted regions, and any changes in movement should ideally be assessed with data from a single cell. Ando et al. describe the engineering and application of a fluorescent protein, Dronpa, that can be reversibly highlighted to study spatiotemporal protein dynamics in living cells. The authors directly visualized the influx and efflux of a key regulator of intracellular signaling, mitogen-activated protein kinase, into and out of the nucleus.
Citation: Now You See It, Now You Don't. Sci. STKE 2004, tw426 (2004).
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