Table 1.

Classification of MMPs.

1. Collagenases

MMP-1 (collagenase-1, interstitial collagenase)

MMP-8 (collagenase-2, neutrophil collagenase)

MMP-13 (collagenase-3)

2. Gelatinases

MMP-2 (gelatinase A, 72-kDa gelatinase)

MMP-9 (gelatinase B, 92-kDa gelatinase)

3. Stromelysins

MMP-3 (stromelysin-1)

MMP-10 (stromelysin-2)

MMP-11 (stromelysin-3)

MMP-12 (metalloelastase)

4. Matrilysins

MMP-7 (matrilysin, PUMP-1)

MMP-26 (matrilysin-2)

5. MT-MMPs (Membrane type)

MMP-14 (MT1-MMP)

MMP-15 (MT2-MMP)

MMP-16 (MT3-MMP)

MMP-17 (MT4-MMP)

MMP-24 (MT5-MMP)

MMP-25 (MT6-MMP)

6. Other MMPs

MMP-18

MMP-19

MMP-20 (enamelysin)

MMP-21

MMP-23

MMP-27

MMP-28 (epilysin)