Matrix metalloproteinases (MMPs) belong to a family of secreted or membrane-associated zinc endopeptidases capable of digesting extracellular matrix components. MMP-8 (neutrophil collagenase) is synthesized by neutrophils and stored in the specific granules until it is secreted.
Human MMP-8 is a full length pro-enzyme isolated from stimulated human neutrophil granulocytes. Proenzyme can be activated by incubating with 1 mM APMA at 37°C for 1 hr. Its activity can be measured in FRET-based enzymatic assays. 10-20 ng of enzyme is sufficient for FRET-based assay.