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Resorufin benzyl ether

CAS No. : 87687-02-3

MCE 站：Resorufin benzyl ether

产品活性：Resorufin benzyl ether (BzRes) 是一种荧光酶底物，可用于检测 CYP3A4 酶活。Resorufin benzyl ether 经有识别功能的硼酸基团修饰后，可通过自焚机制用于 ONOO^- 检测。Ex/Em=530-570 nm/590 nm。

研究领域：Others

作用靶点：Fluorescent Dye

In Vitro: CYP3A4 activity assay:
1. Preparation solution.
a. The standard stock solution containing 1 mM Resorufin benzyl ether as fluorogenic substrate. Dissolve 5 mg Resorufin benzyl ether in a mixture of 1 mL of 2%w/v Poloxamer 188 (HY-D1005A), 500 mL Dimethyl sulfoxide (HY-Y0320) ａnd 3.5 mL Acetonitrile.
b. CYP3A4 enzyme solution should be freshly prepared. Dilute 5 mL of 1 mM enzyme stock solution with 995 mL of the buffer to obtain 5 nM enzyme solution.
2. Measurement of CYP3A4 activity
a. Conduct in a 96-well plate. Add 99 mL of buffer mixture solution, 1 mL of 1 mM Resorufin benzyl ether to each well. Adjust to the final concentration of 5 mM.
b. Transfer 100 mL of 5 nM enzyme solution prior the incubation at 37 ℃ for 30 min.
c. Perform enzyme activity measurement with fluorescence detection at excitation wavelength, lex of 570 nm ａnd emission wavelength, lem of 590 nm.
d. Factors influences in the assay of CYP3A4 activity. Such as buffer (phosphate, Tris-HCl buffer), concentration of buffer (50-200 mM) ａnd incubation time (0-50 min).

CYP3A4 metabolism activity assay:
1.Add CYP3A4 enzyme to final concentrations of 5 pmol/well.
2.Each reaction used 50 pM substrate ａnd 200 mM potassium phosphate buffer.
3.Incubate with BzRes for 45 minutes prior to measuring metabolite fluorescence. The excitation filter (ex) is 530 nm ａnd the emission filter (em) is 590 nm.
4.Assign the concentration designation of 100% to the full strength extract (diluted 1:4 in the final assay volume).
5.Run in duplicate for 1:3 serial dilutions of the 100% extract. Calculate mean ａnd standard deviation of fluorescence values.

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