| Comments |
P.1 left column: "Proteolysis maintains proteostasis (Nelson & Millar, 2015) and regulates signaling and other physiological processes by selective elimination of target proteins (Gibbs et al., 2016) or site-specific proteolytic processing (Qiao et al., 2012). The latter, also called limited proteolysis, is an essentially irreversible protein modification that generates new proteoforms with altered location, activity and/or function (Lange & Overall, 2013). Proteolytic processes occur in most compartments of the plant cell and are involved in all aspects of plant life, including growth, development and plant–environment interactions (primary source, van Wijk, 2015). Plant genomes encode for a large variety of proteases, the enzymes that catalyze peptide bond hydrolysis, including > 650 protease-coding genes in rice (Oryza sativa) and > 800 in Arabidopsis thaliana (primary source)." |