Luciferin is a substrate for the enzyme firefly luciferase
D-Luciferin, potassium salt is the more commonly water soluble substrate for cell-based and in vivo reporter assays. D-luciferin, sodium salt is an alternative salt form with higher water solubility. D-luciferin, free acid is soluble in methanol or DMSO, but only sparingly soluble in water. DMNPE-caged D-luciferin is a D-luciferin ester derivative which can cross cell membranes efficiently. Once inside the cells, the ester is continuously hydrolyzed to a supply of D-luciferin. Alternatively a burst of D-luciferin release can be generated by UV photolysis.
Biotium also offers Firefly and Renilla Luciferase Assay Kits, and ATP-Glo Bioluminescent Cell Quantitation Kit.
Luciferase is encoded by the luc gene, which is widely used as a reporter gene. Luminescence at 560 nm is generated when luciferase catalyzes the oxidation of luciferin by an ATP-dependent process. Cells and tissues have very low intrinsic bioiluminescence, allowing for highly sensitive detection of lucifease expression. In addition, luciferin/luciferase can be used for highly sensitive measurements of ATP levels.
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