Bisazide Cyanine Dyes As Fluorogenic Probes for Bis-Cyclooctynylated Peptide Tags and As Fluorogenic Cross-Linkers of Cyclooctynylated Proteins.
Bioconjugate chemistry(2017)
摘要
Herein we present the synthesis and fluorogenic characterization of a series of double-quenched bisazide cyanine probes with emission maxima between 565 and 580 nm that can participate in covalent, two-point binding bioorthogonal tagging schemes in combination with bis-cyclooctynylated peptides. Compared to other fluorogenic cyanines, these double-quenched systems showed remarkable fluorescence intensity increase upon formation of cyclic dye-peptide conjugates. Furthermore, we also demonstrated that these bisazides are useful fluorogenic cross-linking platforms that are able to form a covalent linkage between monocyclooctynylated proteins.
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