Unbiased statistical analysis for multi-stage proteomic search strategies.

J Proteome Res

University of Pennsylvania, Department of Pathology and Laboratory Medicine, 613A Stellar-Chance Laboratories, 422 Curie Boulevard, Philadelphia, Pennsylvania 19104, USA.

Published: February 2010

"Multi-stage" search strategies have become widely accepted for peptide identification and are implemented in a number of available software packages. We describe limitations of these strategies for validation and decoy-based statistical analyses and demonstrate these limitations using a set of control sample spectra. We propose a solution that corrects the statistical deficiencies and describe its implementation using the open-source software X!Tandem.

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http://dx.doi.org/10.1021/pr900256vDOI Listing

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