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00925njm 22002777a 4500 dc Lopez, Daniel author Calero, Olga author Jimenez, Mercedes author García-Calvo, Margarita author Del Val, Margarita author 2006-10-13 Mass spectrometry (MS)-based methods coupled to reverse phase chromatography separation are a useful technology to analyze complex peptide pools that are comprised of different peptides with unrelated sequences. In antigen presentation, proteasomes generate a set of short peptides that are closely related and overlapping and in some instances may even have identical retention times and identical masses. In these situations, micro-liquid chromatography-MS/MS focused on each theoretical parent ion followed by manual interpretation optimizes the identification of generated peptides. The results suggest that the degradation of short antigens by the proteasome occurs by sequential cleavage. J Biol Chem. 2006 Oct 13;281(41):30315-8. Epub 2006 Jul 21. 10.1074/jbc.M605973200 0021-9258 The Journal of biological chemistry 16861221 http://hdl.handle.net/20.500.12105/9696 Antigen processing of a short viral antigen by proteasomes