Figure 2. Location of plant proteases in different cellular compartments involved in plant senescence. Different families of proteases are represented: Cysteine-Proteases (CP), Serine-Proteases (SP), Metallo-Proteases (MP), Threonine-Proteases (TP) and Aspartic-Proteases (AP). Subcellular localization of specific proteases, indicated in brackets, are in chloroplast (FtsH-, Clp-, Lon-, DegP- CND41- and subtilase-like proteases), vacuole (RD21A, CaCP, VmSh-EP, AtSAP, subtilase-, SASP-like proteases), mitochondria (Lon-like protease), SAV (SAG12-like protease), ER (Tr-cp-14-like protease) and apoplast (subtilisin). Endoplasmic Reticulum (ER), Rubisco Containing Body (RCB), Senescence Associated Vesicle (SAV) and Chloroplast Containing Vesicles (CCV).