Table 1.

Matrix metalloproteinases (MMPs) classes.

Class	MMP
Collagenases	MMP-1, Collagenase-1, Interstitial or Fibroblast collagenases
	MMP-8, Collagenase-2, or Neutrophil collagenases
	MMP-13 or Collagenase 3
Gelatinases	MMP-2 or Gelatinase A
	MMP-9 or Gelatinase B
Stromelysin	MMP-3 or Stromelysin-1
	MMP-10 or Stromelysin-2
	MMP-11
Matrilysin	MMP-7
	MMP-26, Matrilysin-2, or Endometase
Membrane-type	Type I transmembrane protein	MMP-14 or MT1-MMP
		MMP-15 or MT2-MMP
		MMP-16 or MT3-MMP
		MMP-24 or MT5-MMP
	Glycosylphosphatidylinositol (GPI)-anchored	MMP17 or MT4-MMP
		MMP-25 or MT6-MMP
Other MMPs	MMP-12
	MMP-19
	MMP-20
	MMP-21
	MMP-23
	MMP-27
	MMP-28