The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 2-Chloro-6-nitrobenzo[d]thiazole, is researched, Molecular C7H3ClN2O2S, CAS is 2407-11-6, about Aminoluciferins as Functional Bioluminogenic Substrates of Firefly Luciferase, the main research direction is aminoluciferin bioluminogenic firefly luciferase.Related Products of 2407-11-6.
Firefly luciferase is widely used as a reporter gene in assays to study gene expression, gene delivery, and so on because of its extremely high signal-to-noise ratio. The availability of a range of bioluminogenic substrates would greatly extend the applicability of the luciferin-luciferase system. Herein, we describe a design concept for functional bioluminogenic substrates based on the aminoluciferin (AL) scaffold, together with a convenient, high-yield method for synthesizing N-alkylated ALs. We confirmed the usefulness of ALs as bioluminogenic substrates by synthesizing three probes. The first was a conjugate of AL with glutamate, Glu-AL. When Glu-AL, the first membrane-impermeable bioluminogenic substrate of luciferases, was applied to cells transfected with luciferase, luminescence was not observed; i.e., by using Glu-AL, we can distinguish between intracellular and extracellular events. The second was Cy5-AL, which consisted of Cy5, a near-IR (NIR) cyanine fluorescent dye, and AL, and emitted NIR light. When Cy5-AL reacted with luciferase, luminescence derived from Cy5 was observed as a result of bioluminescence resonance energy transfer (BRET) from AL to Cy5. The NIR emission wavelength would allow a signal to be observed from deeper tissues in bioluminescence in vivo imaging. The third was biotin-DEVD-AL (DEVD=the amino acid sequence Asp-Glu-Val-Asp), which employed a caspase-3 substrate peptide as a switch to control the accessibility of the substrate to luciferase, and could detect the activity of caspase-3 in a time-dependent manner. This generalized design strategy should be applicable to other proteases. Our results indicate that the AL scaffold is appropriate for a range of functional luminophores and represents a useful alternative substrate to luciferin.
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