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A Rapidly Maturing Far-Red Derivative of DsRed-Express2 for Whole-Cell Labeling

Open access
Strack, Rita L., Hein, Birka, Bhattacharyya, Dibyendu, Hell, Stefan W., Keenan, Robert J., Glick, Benjamin S.·2009·Biochemistry

Abstract

Fluorescent proteins (FPs) with far-red excitation and emission are desirable for multicolor labeling and live-animal imaging. We describe E2-Crimson, a far-red derivative of the tetrameric FP DsRed-Express2. Unlike other far-red FPs, E2-Crimson is noncytotoxic in bacterial and mammalian cells. E2-Crimson is brighter than other far-red FPs and matures substantially faster than other red and far-red FPs. Approximately 40% of the E2-Crimson fluorescence signal is remarkably photostable. With an excitation maximum at 611 nm, E2-Crimson is the first FP that is efficiently excited with standard far-red lasers. We show that E2-Crimson has unique applications for flow cytometry and stimulated emission depletion (STED) microscopy.

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Metadata

Authors
Strack, R. L., Hein, B., Bhattacharyya, D., Hell, S. W., Keenan, R. J., & Glick, B. S.
Venue
Biochemistry
Published
2009-08-12
Volume
48
Issue
35
Pages
8279-8281
ISSN
  • 0006-2960 (ISSN-L)
  • 1520-4995
OpenAlex
W2136133782
Cited by
187
References
1
FWCI
6.37
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: A Rapidly Maturing Far-Red Derivative of DsRed-Express2 for Whole-Cell Labeling. https://app.cochat.ai/papers/10.1021/bi900870u
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Strack, R. L., Hein, B., Bhattacharyya, D., Hell, S. W., Keenan, R. J., & Glick, B. S. (2009). A Rapidly Maturing Far-Red Derivative of DsRed-Express2 for Whole-Cell Labeling. Biochemistry. https://doi.org/10.1021/bi900870u

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