Literature DB >> 23007965

De novo correction of mass measurement error in low resolution tandem MS spectra for shotgun proteomics.

Jarrett D Egertson1, Jimmy K Eng, Michael S Bereman, Edward J Hsieh, Gennifer E Merrihew, Michael J MacCoss.   

Abstract

We report an algorithm designed for the calibration of low resolution peptide mass spectra. Our algorithm is implemented in a program called FineTune, which corrects systematic mass measurement error in 1 min, with no input required besides the mass spectra themselves. The mass measurement accuracy for a set of spectra collected on an LTQ-Velos improved 20-fold from -0.1776 ± 0.0010 m/z to 0.0078 ± 0.0006 m/z after calibration (avg ± 95 % confidence interval). The precision in mass measurement was improved due to the correction of non-linear variation in mass measurement accuracy across the m/z range.

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Year:  2012        PMID： 23007965      PMCID： PMC3515694          DOI： 10.1007/s13361-012-0482-z

Source DB:  PubMed          Journal:  J Am Soc Mass Spectrom        ISSN： 1044-0305            Impact factor:   3.109


  33 in total

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  5 in total

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  5 in total

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