会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Methods for quantifying polypeptides using mass spectrometry
    • 使用质谱法定量多肽的方法
    • US09588130B2
    • 2017-03-07
    • US14394952
    • 2013-03-14
    • Waters Technologies Corporation
    • Erin E. ChambersMartha StapelsJoanne Mather
    • G01N33/68G01N33/74G01N30/72G01N33/02G01N30/86G01N30/88
    • G01N33/6848G01N30/7233G01N30/7266G01N30/8679G01N30/88G01N33/02G01N33/74G01N2030/8831Y10T436/24
    • A method for identifying a polypeptide a specimen can include (i) treating a specimen suspected of including an insulin with a base; (ii) extracting a first fraction of the treated specimen by solid phase extraction using a mixed mode or polymeric reversed-phase media and a first solvent including an acid; (iii) separating a component of the first fraction by liquid chromatography using a chromatographic surface including a hydrophobic surface group and one or more ionizable modifiers, and a second solvent including an acid; and (iv) analyzing the component of the first fraction by mass spectroscopy, thereby identifying the polypeptide, if present, using a signal corresponding to a sequence fragment ion from the polypeptide. The signal can correspond to an intact multiply charged precursor fragment selected in a first quadrupole and its corresponding sequence fragment ion selected in a final quadrupole.
    • 用于鉴定样品的多肽的方法可以包括(i)将疑似包含胰岛素的样品用碱处理; (ii)使用混合模式或聚合物反相介质和包含酸的第一溶剂通过固相萃取提取处理过的样品的第一级分; (iii)使用包括疏水表面基团和一种或多种可电离改性剂的色谱表面和包含酸的第二溶剂通过液相色谱分离第一级分的组分; 和(iv)通过质谱法分析第一级分的组分,从而使用对应于来自多肽的序列片段离子的信号鉴定多肽(如果存在)。 该信号可以对应于在第一个四极中选择的完整的多电荷前体片段及其在最终四极中选择的相应的序列片段离子。