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Science beyond Barriers

abberior intruments

2021
Journal of the American Chemical Society

Photoactivatable Fluorescent Dyes with Hydrophilic Caging Groups and Their Use in Multicolor Nanoscopy

Authors:

Butkevich, A. N., Weber, M., Cereceda Delgado, A. R., Ostersehlt, L. M., D’Este, E., & Hell, S. W.

Keywords:

Peptides and proteins, MINFLUX

Abstract:

We propose a series of fluorescent dyes with hydrophilic carbamate caging groups that undergo rapid photoactivation under UV (≤400 nm) irradiation but do not undergo spurious two-photon activation with high-intensity (visible or infrared) light of about twice the wavelength. The caged fluorescent dyes and labels derived therefrom display high water solubility and convert upon photoactivation into validated super-resolution and live-cell-compatible fluorophores. In combination with popular fluorescent markers, multiple (up to six)-color images can be obtained with stimulated emission depletion nanoscopy. Moreover, individual fluorophores can be localized with precision <3 nm (standard deviation) using MINSTED and MINFLUX techniques.

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