Peptide mass spectrometry rich in daughter ions
    1.
    发明申请
    Peptide mass spectrometry rich in daughter ions 审中-公开
    肽质谱富含子离子

    公开(公告)号:US20060022129A1

    公开(公告)日:2006-02-02

    申请号:US11136436

    申请日:2005-05-25

    IPC分类号: B01D59/44

    摘要: Methods of analysing peptides by mass spectrometry are disclosed. In particular, methods of analysing peptides by fragmentation mass spectrometry (MSn, where n is at least 2) are disclosed. The methods involve derivatisation of a peptide at its N-terminus such that peaks corresponding to both a and b (and y) daughter ions are identifiable in fragmentation mass spectra of the derivatised peptide. The fragmentation mass spectra of the derivatised peptide contain additional information (relative to the fragmentation mass spectra of the underivatised peptide) useful for determination of the amino acid sequence of the peptide.

    摘要翻译: 公开了通过质谱分析肽的方法。 特别地,公开了通过碎片质谱法(MS< n>,其中n至少为2)分析肽的方法。 所述方法涉及在其N末端衍生肽,使得对应于a和b(和y)子离子的峰可在衍生肽的断裂质谱中鉴定。 衍生肽的断裂质谱包含可用于测定肽的氨基酸序列的附加信息(相对于未衍生肽的断裂质谱)。

    Tag reagent and assay method
    2.
    发明授权
    Tag reagent and assay method 失效
    标签试剂和测定方法

    公开(公告)号:US5770367A

    公开(公告)日:1998-06-23

    申请号:US586875

    申请日:1996-02-05

    摘要: A reagent comprises: a) an analyte moiety comprising at least two analyte residues, and linked to; b) a tag moiety comprising one or more reporter groups adapted for detection by mass spectrometry, wherein a reporter group designates analyte residue, and the reporter group at each position of the tag moiety is chosen to designate an analyte residue at a defined position of the analyte moiety. A plurality of such reagents, each comprising a different analyte moiety, provides a library of reagents which may be used in assay methods involving a target substance. Analysis of the tag moieties indicates the nature of the analyte moieties bound to the target substance. A method of sequencing nucleic acid employs a library of the reagents to determine the sequence of a target nucleic acid.

    摘要翻译: PCT No.PCT / GB94 / 01675 Sec。 371日期:1996年2月5日 102(e)日期1996年2月5日PCT 1994年8月1日PCT公布。 出版物WO95 / 04160 日期:1995年2月9日试剂包括:a)包含至少两个分析物残基并与之连接的分析物部分; b)包含一个或多个适于通过质谱检测的报告基团的标签部分,其中报告基团指定分析物残基,并且选择标签部分的每个位置处的报告基团来表示在所述标记部分的限定位置处的分析物残基 分析物部分。 多个这样的试剂,各自包含不同的分析物部分,提供可用于涉及靶物质的测定方法的试剂文库。 标签部分的分析表明结合到目标物质的分析物部分的性质。 测序核酸的方法使用试剂文库来确定靶核酸的序列。