Sample Preparation Protocols for Protein Abundance, Acetylome, and Phosphoproteome Profiling of Plant Tissues.

Peptide mass spectrometry is an invaluable technique to globally quantify the proteome. Central to proteome profiling are efficient methods to extract proteins, digest proteins into peptides, and enrich for posttranslationally modified peptides prior to mass spectrometry. In this chapter, we describe methods to extract proteins, process them into peptides, and optionally enrich for phospho- and acetyl-peptides prior to analysis by mass spectrometry.