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    • 5. 发明申请
    • METHODS OF IDENTIFYING PEPTIDES AND PROTEINS
    • 鉴定蛋白和蛋白质的方法
    • WO2005057208A1
    • 2005-06-23
    • PCT/US2004/040225
    • 2004-12-02
    • PROLEXYS PHARMACEUTICALS, INC.ASKOVIC, SrdjanPELTIER, JohnPHANSALKAR, AmitECCLESTON, Joseph, Patrick
    • ASKOVIC, SrdjanPELTIER, JohnPHANSALKAR, AmitECCLESTON, Joseph, Patrick
    • G01N33/48
    • G01N33/6848
    • The present invention provides methods for identifying biological molecules by mass spectrometry, particularly peptides and proteins. In one aspect, the present invention includes methods of identifying proteins by analizing fragmentation spectra of peptides derived from proteins. In another aspect, the present invention provides methods of quantifying the confidence of a putative peptide sequence assignment generated by a de novo peptide-sequencing algorithm, or a peptide identification algorithm employing one or more protein sequence databases. The present invention includes methods for identifying amino acid sequence of peptides wherein peptide sequence annotators are used to independently verify assigned peptide sequence identities. The present invention also includes methods wherein a parallel confidence assessment algorithm of the present invention calculates the sum of selected peptide sequence annotators multiplied by weighting factors, each selected to achieve an accurate assessment of the confidence of each putative peptide sequence assignment.
    • 本发明提供了通过质谱鉴定生物分子的方法,特别是肽和蛋白质。 一方面,本发明包括通过分析衍生自蛋白质的肽的片段化谱来鉴定蛋白质的方法。 在另一方面,本发明提供了定量由通过肽肽测序算法产生的假定肽序列指定的置信度的方法或使用一个或多个蛋白质序列数据库的肽识别算法。 本发明包括用于鉴定肽的氨基酸序列的方法,其中肽序列注释者用于独立地验证分配的肽序列同一性。 本发明还包括其中本发明的并行置信度评估算法计算所选择的肽序列注释器的总和乘以加权因子的方法,每个加权因子被选择以实现每个推定的肽序列分配的置信度的准确评估。