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
    • 7. 发明申请
    • METHOD AND APPARATUS FOR IDENTIFYING PROTEINS IN MIXTURES
    • 用于鉴定混合蛋白的方法和装置
    • WO2005114930A2
    • 2005-12-01
    • PCT/US2005/017742
    • 2005-05-20
    • WATERS INVESTMENT LIMITEDGEROMANOS, Scott, J.GORENSTEIN, Marc, VictorSILVA, Jeffrey, CruzLI, Guo-Zhong
    • GEROMANOS, Scott, J.GORENSTEIN, Marc, VictorSILVA, Jeffrey, CruzLI, Guo-Zhong
    • H04L13/18
    • G06F19/16G01N33/6848G01N2030/8831H01J49/0036H01J49/0431H01J49/426G01N30/7233
    • Protein identification in a complex sample begins by selecting a database having proteins likely to be in the sample. In-silico digestion is performed on the proteins in the database to produce peptides. A target peptide is selected from the produced peptides. The masses of the Y- and B-ion fragments of the target peptide are determined. Thus, a list of masses is assembled. This list contains the Y-ions, B-ions as well as the unique mass associated with the unfragmented precursor itself. These masses are used to search previously obtained low- and high-energy AMRTs obtained from LC/MS analysis of the complex sample for any and all of the masses on the list. Any mass observed in the data within a detection threshold are considered a hit. If enough hits accumulate in a given retention time, the target peptide is identified as being in the sample. Peptides in the data base can detect peptides in the sample provided there is sufficient sequence overlap. Because sequence identity is not required, modified peptides can be found in the sample. The list of peptides identified in the complex sample can be used to identify the proteins present in the sample, track the chromatographic retention times of peptides between samples, and quantitate the peptides and proteins present in complex samples.
    • 复杂样品中的蛋白质鉴定开始于选择具有可能在样品中的蛋白质的数据库。 对数据库中的蛋白质进行计算机内消化以产生肽。 靶肽选自产生的肽。 确定靶肽的Y和B离子片段的质量。 因此,组合了一个质量清单。 该列表包含Y离子,B离子以及与未分解前体本身相关联的独特质量。 这些质量用于搜索从列表中的任何和所有质量的复杂样本的LC / MS分析中获得的先前获得的低能量和高能量AMRT。 在检测阈值内的数据中观察到的任何质量都被认为是命中。 如果足够的命中在给定的保留时间内积累,则目标肽被鉴定为在样品中。 数据库中的肽可以检测样品中的肽,只要有足够的序列重叠。 因为不需要序列同一性,所以可以在样品中找到修饰的肽。 在复杂样品中鉴定的肽列表可用于鉴定样品中存在的蛋白质,跟踪样品间肽的色谱保留时间,并定量复杂样品中存在的肽和蛋白质。