Fast reversibly photoswitching red fluorescent proteins for live-cell RESOLFT nanoscopy.

Pennacchietti, Francesca; Serebrovskaya, Ekaterina O; Faro, Aline R; Shemyakina, Irina I; Bozhanova, Nina G; Kotlobay, Alexey A; Gurskaya, Nadya G; Bodén, Andreas et al. · Nat Methods · 2018

basic_science · Level V

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Abstract

Reversibly photoswitchable fluorescent proteins (rsFPs) are gaining popularity as tags for optical nanoscopy because they make it possible to image with lower light doses. However, green rsFPs need violet-blue light for photoswitching, which is potentially phototoxic and highly scattering. We developed new rsFPs based on FusionRed that are reversibly photoswitchable with green-orange light. The rsFusionReds are bright and exhibit rapid photoswitching, thereby enabling nanoscale imaging of living cells.

Medical subject headings