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protein_木蟲 (小有名氣)
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[交流]
【求助/交流】蛋白酶活力的測定方法 已有5人參與
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問題是下面的方法中的參比怎么設計,還有更好的測定方法嗎?謝謝! 取1mL0.5%酪素,加入0.5mL酶液40℃放置15min,過濾取清液0.5mL加入2.5mL0.55mol/L Na2CO3及0.5mLFollin,40℃顯色15min,660nm測吸光值。 空白:取1mL0.5%酪素,加入0.5mL蒸餾水40℃放置15min,過濾取清液0.5mL加入2.5mL0.55mol/L Na2CO3及0.5mLFollin,40℃顯色15min(以空白調零)。 酶活力單位定義:上述條件下1min水解1μg酪素產(chǎn)生酪氨酸的酶量即為一個酶活力單位U(絕干)。 |
木蟲 (正式寫手)
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可以使用上海生工代理的試劑盒! Protease Assay Kit 蛋白酶活性分析 Description: The Protease Assay Kit is designed for the quantitative determination of proteases present in a protein sample, using a dye-labeled protein substrate.The proteases present in the sample of interest will digest the protein substrate and release dye labeled peptides.The absorbance of the dye-labeled peptide is measured at 570nm for determination of protease activity.Chemically stabilized Trypsin (MSG-Trypsin™ is supplied with the kit as a general protease standard; however, other specific protease standards can also be used. MSG-Trypsin™ is an ultra-pure trypsin from bovine pancreas, modified by methylation followed by TPCK treatment and is extremely resistant to autolysis.The kit components are sufficient for 50 assays in a microtiter plate format or 0.5ml assay tubes..application for Determination of protease activity in biological samples, with nanogram detection levels.Store:-15~-20℃編號 包裝 價格 產(chǎn)地 786-028 50 Assays 2112 G Bios |
用戶注銷 (文壇精英)
銅蟲 (正式寫手)
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