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. Author manuscript; available in PMC: 2018 Jul 12.
Published in final edited form as: J Chromatogr A. 2017 Jul 21;1523:40–48. doi: 10.1016/j.chroma.2017.07.055

Fig. 2.

Fig. 2.

A general workflow of bottom-up MS-based proteomics. It typically starts from cell lysis, protein extraction, and proteolytic digestion to peptide mixtures, followed up by fractionation or enrichment procedures and LC or CE-MS/MS analyses. The experimental spectrum is matched with database to identify peptides or contaminants.