Peptide sequencing from peptide fragmentation mass spectra
    1.
    发明授权
    Peptide sequencing from peptide fragmentation mass spectra 失效
    肽片段质谱的肽测序

    公开(公告)号:US07783429B2

    公开(公告)日:2010-08-24

    申请号:US11060591

    申请日:2005-02-18

    IPC分类号: G06F19/00 G11C17/00 H01J49/26

    CPC分类号: G01N33/6848

    摘要: The invention relates to a method of peptide sequencing from peptide fragment mass data, wherein a plurality of candidate peptide sequences are determined comprises the steps of: calculating peptide fragment masses, searching a plurality of peak data for masses matching said calculated peptide fragment masses, annotating all permutations of said peak data with amino acid sequences that correspond to the calculated peptide fragment masses, extending said potential sequences to resulting masses with additional matching masses, extending stepwise additions until the resulting masses correspond to parental peptide masses or said parental peptide masses minus the mass of water, and identifying at least one peptide sequence by deleting sequences that can not be extended to endpoints of said parental peptide masses, and deleting identical sequences generated.

    摘要翻译: 本发明涉及从肽片段质量数据进行肽测序的方法,其中确定多个候选肽序列包括以下步骤:计算肽片段质量,搜索多个峰数据以获得与所计算的肽片段质量匹配的质量,注释 所述峰数据与所计算的肽片段质量对应的氨基酸序列的所有排列,将所述潜在序列扩展到具有附加匹配质量的所得质量,延伸逐步添加,直到所得质量对应于亲本肽质量或所述亲本肽质量减去 并且通过删除不能扩展到所述亲本肽质量的端点的序列以及删除产生的相同序列来鉴定至少一个肽序列。

    Peptide sequencing from peptide fragmentation mass spectra
    2.
    发明申请
    Peptide sequencing from peptide fragmentation mass spectra 失效
    肽片段质谱的肽测序

    公开(公告)号:US20060190183A1

    公开(公告)日:2006-08-24

    申请号:US11060591

    申请日:2005-02-18

    IPC分类号: G06F19/00

    CPC分类号: G01N33/6848

    摘要: The invention relates to a method of peptide sequencing from peptide fragment mass data, wherein a step of deriving a plurality of candidate peptide sequences comprises the following steps: calculating peptide fragment masses by adding to masses of a proton, hydronium ion, b1 ion or y1 ion masses of one amino acid or more amino acids; searching a plurality of peak data for masses matching said calculated peptide fragment masses; annotating in all permutations said peak data with amino acid sequences that correspond to said calculated peptide fragment masses, thereby creating one or more potential sequences; extending said potential sequences to resulting masses with additional matching masses by stepwise adding masses of one or more amino acids and searching for masses in said plurality of peak data that match said resulting masses; extending said stepwise additions until said resulting masses correspond to parental peptide masses or said parental peptide masses minus the mass of water, depending on whether the b or y ion series sequences are calculated; and providing at least one identified peptide sequence by deleting sequences from said potential sequences that can not be extended to endpoints of said parental peptide masses, and deleting from said potential sequences identical sequences generated in at least one of the foregoing steps.

    摘要翻译: 本发明涉及从肽片段质量数据进行肽测序的方法,其中衍生多个候选肽序列的步骤包括以下步骤:通过加入质子质子,水合氢离子,b1离子或y1来计算肽片段质量 一个氨基酸或更多个氨基酸的离子团; 搜索与所计算的肽片段质量匹配的质量的多个峰数据; 在所有排列中注释所述峰数据与对应于所述计算的肽片段质量的氨基酸序列,从而产生一个或多个潜在序列; 通过逐步添加一个或多个氨基酸的质量并且搜索与所述所得质量匹配的所述多个峰数据中的质量,将所述潜在序列扩展到具有附加匹配质量的所述质量; 延伸所述逐步添加,直到所得到的质量对应于亲本肽质量或所述亲本肽质量减去水的质量,取决于是否计算b或y离子序列序列; 以及通过从所述潜在序列中删除不能扩展到所述亲本肽质量的端点的序列提供至少一个鉴定的肽序列,以及从所述潜在序列中删除在至少一个前述步骤中产生的相同序列。