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- W1997504014 abstract "Proteomic analysis of complex protein mixtures using proteolytic digestion and liquid chromatography in combination with tandem mass spectrometry is a standard approach in biological studies. Data-dependent acquisition is used to automatically acquire tandem mass spectra of peptides eluting into the mass spectrometer. In more complicated mixtures, for example, whole cell lysates, data-dependent acquisition incompletely samples among the peptide ions present rather than acquiring tandem mass spectra for all ions available. We analyzed the sampling process and developed a statistical model to accurately predict the level of sampling expected for mixtures of a specific complexity. The model also predicts how many analyses are required for saturated sampling of a complex protein mixture. For a yeast-soluble cell lysate 10 analyses are required to reach a 95% saturation level on protein identifications based on our model. The statistical model also suggests a relationship between the level of sampling observed for a protein and the relative abundance of the protein in the mixture. We demonstrate a linear dynamic range over 2 orders of magnitude by using the number of spectra (spectral sampling) acquired for each protein." @default.
- W1997504014 created "2016-06-24" @default.
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- W1997504014 date "2004-06-02" @default.
- W1997504014 modified "2023-10-10" @default.
- W1997504014 title "A Model for Random Sampling and Estimation of Relative Protein Abundance in Shotgun Proteomics" @default.
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- W1997504014 doi "https://doi.org/10.1021/ac0498563" @default.
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