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D-Luciferin sodium

CAS No. : 103404-75-7

MCE 站：D-Luciferin sodium

产品活性：D-Luciferin (D-(-)-Luciferin) sodium 是萤光素酶的底物，可催化生物发光昆虫产生典型的黄绿光。

研究领域：Others

作用靶点：Others

In Vitro: D-luciferin is the natural substrate of the enzyme luciferase (Luc), that catalyzes the production of the typical yellowgreen light of fireflies.The present review covers the synthesis of D-luciferin and derivatives or analogues that are substrates or inhibitors of the luciferase from the American firefly Photinus pyralis, the enzyme more frequently used in techniques of in vitro and optical imaging.
D-Luciferin exhibits a decrease in the measured K_m in PC3M-Luc cell lysates with a K_m of 34 μM.

In Vivo: Bioluminescence imaging (BLI) using the firefly luciferase (Fluc) as a reporter gene and D-luciferin as a substrate is currently the most widely employed technique. The total signal intensity is plotted against the time after D-luciferin injection to generate a time-intensity curve. In addition to the peak signal, the signals at fixed time points (5, 10, 15, and 20?min) after D-luciferin injection are determined as alternatives to the peak signal. The signal in a given time-intensity curve is normalized for the peak signal in the curve to represent the pattern of temporal changes after D-luciferin injection.
Inject with 10 μL of D-luciferin (intraperitoneally or intravenously) stock solution per gram of body weight: normally ~200 μL for a 20 g mouse for a standard 150 mg/kg injection.
Thaw D-Luciferin (either Potassium or Sodium Salt) at room temperature and dissolve in dPBS (no calcium or magnesium) to a final concentration of 15 mg/mL. Pre-wet a 0.22 μm filter by drawing through 5-10 mL of sterile H₂O and discard water. Sterilize the D-Luciferin solution through the prepared 0.22 μm syringe filter.

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