
D-Luciferin, Sodium Salt by Molecular Depot is a D-luciferin sodium salt, the substrate of firefly luciferase and the most used reporter for bioluminescent imaging. Firefly luciferase oxidises luciferin in a reaction requiring ATP, magnesium and oxygen, emitting a photon for each molecule turned over, which is what makes the signal proportional to enzyme and to ATP. It is used as the substrate in firefly luciferase reporter assays, in live animal bioluminescence imaging and in ATP determination. Each unit contains 50 mg. MBP supplies Molecular Depot research reagents to research labs in the United States, Canada and worldwide.