reviewJournal of Biomedicine and BiotechnologyNov 11, 2009HYBRID OA

Mass Spectrometry-Based Label-Free Quantitative Proteomics

Sanford Burnham Prebys Medical Discovery Institute · Pathways Behavioral Services · +1 more institution

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Abstract

In order to study the differential protein expression in complex biological samples, strategies for rapid, highly reproducible and accurate quantification are necessary. Isotope labeling and fluorescent labeling techniques have been widely used in quantitative proteomics research. However, researchers are increasingly turning to label-free shotgun proteomics techniques for faster, cleaner, and simpler results. Mass spectrometry-based label-free quantitative proteomics falls into two general categories. In the first are the measurements of changes in chromatographic ion intensity such as peptide peak areas or peak heights. The second is based on the spectral counting of identified proteins. In this paper, we…

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