3.4.22.53	additional information	the enzyme is neither glycosylated nor phosphorylated	
3.4.22.53	phosphoprotein	brain-derived neurotrophic factor stimulates m-calpain serine phosphorylation	
3.4.22.53	phosphoprotein	the endoplasmic reticulum lumen m-calpain containing only 80000 Da large subunit is phosphorylated	
3.4.22.53	side-chain modification	calpain-2 is small ubiquitin-like modifier-modified at lysine residue 390, sumoylation is important for calpain-2 activity