Here, we present an optimized on-filter digestion protocol with detailed information about the following: protein digestion, peptide purification and data independent acquisition analysis. This strategy is applied to the analysis of expressed prostatic secretions-urine samples and allows high proteome coverage and low missing value label-free profiling of the urinary proteome.
Prestagiacomo, L. E., Gabriele, C., Morelli, P., Rota, M. A., Alba, S., Cuda, G., Damiano, R., Gaspari, M. Proteomic Profile of EPS-Urine through FASP Digestion and Data-Independent Analysis. J. Vis. Exp. (171), e62512, doi:10.3791/62512 (2021).