We have developed a novel visible-light-catalyzed bioconjugation reaction, PhotoCLIC, that enables chemoselective attachment of diverse aromatic amine reagents onto a site-specifically installed 5-hydroxytryptophan residue (5HTP) on full-length proteins of varied complexity. The reaction uses catalytic amounts of methylene blue and blue/red light-emitting diodes (455/650 nm) for rapid site-specific protein bioconjugation. Characterization of the PhotoCLIC product reveals a unique structure formed likely through a singlet oxygen-dependent modification of 5HTP. PhotoCLIC has a wide substrate scope and its compatibility with strain-promoted azide-alkyne click reaction, enables site-specific dual-labeling of a target protein.
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Univ Wisconsin, Dept Biochem, Madison, WI 53706 USAUniv Wisconsin, Dept Biochem, Madison, WI 53706 USA
Smith, Bryan D.
Higgin, Joshua J.
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Univ Wisconsin, Dept Chem, Madison, WI 53706 USAUniv Wisconsin, Dept Biochem, Madison, WI 53706 USA
Higgin, Joshua J.
Raines, Ronald T.
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Univ Wisconsin, Dept Biochem, Madison, WI 53706 USA
Univ Wisconsin, Dept Chem, Madison, WI 53706 USAUniv Wisconsin, Dept Biochem, Madison, WI 53706 USA
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Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USAUniv Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
Rosen, Christian B.
Kwant, Richard L.
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Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USAUniv Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
Kwant, Richard L.
MacDonald, James I.
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Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USAUniv Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
MacDonald, James I.
Rao, Meera
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Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USAUniv Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
Rao, Meera
Francis, Matthew B.
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Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USAUniv Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA