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Updated: Jun 28, 2026

Specific Labeling of Mitochondrial Nucleoids for Time-lapse Structured Illumination Microscopy
Published on: June 4, 2020
A noncytotoxic DsRed variant for whole-cell labeling
Rita L Strack1, Daniel E Strongin, Dibyendu Bhattacharyya
1Department of Biochemistry and Molecular Biology, The University of Chicago, Gordon Center W238, Chicago, Illinois 60637, USA.
Abstract:
A common application of fluorescent proteins is to label whole cells, but many RFPs are cytotoxic when used with standard high-level expression systems. We engineered a rapidly maturing tetrameric fluorescent protein called DsRed-Express2 that has minimal cytotoxicity. DsRed-Express2 exhibits strong and stable expression in bacterial and mammalian cells, and it outperforms other available RFPs with regard to photostability and phototoxicity.

