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    • 12. 发明专利
    • Method and kit for quantitative analysis of protein
    • 蛋白质定量分析的方法和工具包
    • JP2006105952A
    • 2006-04-20
    • JP2004368510
    • 2004-12-20
    • Shimadzu Corp株式会社島津製作所
    • MATSUO HIDEKAZUWATANABE MAKOTOTODA CHIKAKONISHIMURA TADASHI
    • G01N31/00C12Q1/37G01N27/62G01N27/64G01N30/00G01N30/88G01N33/68
    • G01N33/6842
    • PROBLEM TO BE SOLVED: To provide a method for global quantitative analysis of protein that is applied effectively also for unpurified samples, such as biological samples, and achieves superior detection sensitivity and quantitativeness as compared with the conventional NBS method.
      SOLUTION: A method for global quantitative analysis of protein comprising preparing two states of protein samples, a protein sample I for analysis and a control protein sample II; solubilizing the protein samples I and II by urea or guanidine hydrochloride; subjecting the solubilized protein samples I and II to modification using an NBSCl (heavy) reagent and NBSCl (light) reagent; mixing and desalting the modified protein samples I and II; resolubilizing by urea or guanidine hydrochloride; reducing and alkylating; subjecting to trypsin digestion, in the presence of urea or guanidine hydrochloride; separating the obtained peptide mixture using a media having a phenyl group; and subjecting the enriched modified peptide fragments to mass spectrometry, preferably using 3-CHCA, 3H4NBA or mixture of 3H4NBA and 4-CHCA as a matrix.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种用于全球定量分析蛋白质的方法,该方法也适用于未经纯化的样品如生物样品,并且与常规NBS方法相比具有优异的检测灵敏度和定量性。 解决方案:一种用于蛋白质全球定量分析的方法,包括制备蛋白质样品的两种状态,用于分析的蛋白质样品I和对照蛋白质样品II; 通过尿素或盐酸胍溶解蛋白质样品I和II; 使用NBSCl(重)试剂和NBSCl(轻质)试剂对溶解的蛋白质样品I和II进行修饰; 混合和脱盐改性蛋白质样品I和II; 用尿素或盐酸胍重新溶解; 还原和烷基化; 在尿素或盐酸胍存在下进行胰蛋白酶消化; 使用具有苯基的介质分离得到的肽混合物; 并将富集的经修饰的肽片段进行质谱分析,优选使用3-CHCA,3H4NBA或3H4NBA和4-CHCA的混合物作为基质。 版权所有(C)2006,JPO&NCIPI