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Simplified validation of borderline hits of database searches
Author(s) -
Thomas Henrik,
Shevchenko Andrej
Publication year - 2008
Publication title -
proteomics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.26
H-Index - 167
eISSN - 1615-9861
pISSN - 1615-9853
DOI - 10.1002/pmic.200800250
Subject(s) - matching (statistics) , computer science , software , database , database search engine , data mining , information retrieval , search engine , mathematics , statistics , programming language
Along with unequivocal hits produced by matching multiple MS/MS spectra to database sequences, LC‐MS/MS analysis often yields a large number of hits of borderline statistical confidence. To simplify their validation, we propose to use rapid de novo interpretation of all acquired MS/MS spectra and, with the help of a simple software tool, display the candidate sequences together with each database search hit. We demonstrate that comparing hit database sequences and independent de novo interpretations of the same MS/MS spectra assists in rapid examination of ambiguous matches.