Abstract

We present a new type of photoactivatable fluorophore that forms a bright silicon rhodamine derivative through a light-dependent isomerization followed by protonation. In contrast to other photoactivatable fluorophores, no caging groups are required, nor are there any undesired side-products released. Using this photoactivatable fluorophore, we created probes for HaloTag and actin for live-cell single-molecule localization microscopy and single-particle tracking experiments. The unusual mechanism of photoactivation and the fluorophore's outstanding spectroscopic properties make it a powerful tool for live-cell super-resolution microscopy.

Details

Title
Photoactivation of silicon rhodamines via a light-induced protonation
Author
Frei, Michelle S; Hoess, Philipp; Lampe, Marko; Nijmeijer, Bianca; Kueblbeck, Moritz; Ellenberg, Jan; Ries, Jonas; Pitsch, Stefan; Reymond, Luc; Johnsson, Kai
University/institution
Cold Spring Harbor Laboratory Press
Section
New Results
Publication year
2019
Publication date
May 4, 2019
Publisher
Cold Spring Harbor Laboratory Press
ISSN
2692-8205
Source type
Working Paper
Language of publication
English
ProQuest document ID
2219822351
Copyright
© 2019. This article is published under http://creativecommons.org/licenses/by/4.0/ (“the License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.