Light controlled reversible Michael addition of cysteine: a new tool for dynamic site-specific labeling of proteins

Author:

Maity Soham1,Bingham Courtney1,Sheng Wei2,Ehyaei Nona3,Chakraborty Debarshi1,Tahmasebi-Nick Setare4,Kimmel Thomas E.1,Vasileiou Chrysoula1,Geiger James H.1,Borhan Babak1ORCID

Affiliation:

1. Department of Chemistry, Michigan State University, 578 S. Shaw Ln., East Lansing, MI 48824, USA

2. Roche Tissue Diagnostics, 1910 E Innovation Park Dr, Oro Valley, AZ, 85755, USA

3. Lycia Therapeutics, 400 East Jamie Court, S San Francisco, CA 94080, USA

4. Merck & Co. Inc., 770 Sumneytown Pike, West Point, PA 19486, USA

Abstract

An engineered hCRBPII protein binds a coumarin-based fluorophore to yield a photoswitchable system via Michael/retro-Michael addition of a cysteine residue. Alternate UV/visible light irradiation accesses the two optical states.

Funder

U.S. Department of Energy

Michigan Economic Development Corporation

Michigan State University

National Institute of General Medical Sciences

Publisher

Royal Society of Chemistry (RSC)

Subject

Electrochemistry,Spectroscopy,Environmental Chemistry,Biochemistry,Analytical Chemistry

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