Matrix metalloproteinases (MMP) are a family of zinc-dependent endopeptidases th at degrade matrix proteins. MMPs include collagenases, gelatinases, matrilysins, enamelysins, metalloelastases, stromelysins and other structural protein and receptor lysins. The activity of these enzymes is selectively inhibited or measured by appropriately labeled peptides. DNP-Pro-Leu-Gly-Met-Trp-Ser-Arg (DNP-PLGMWSR), Dnp-Pro-Leu-Gly-Leu-Trp-Ala-D-Arg-NH2 (DNP-PLGLWA-D-R-NH2), Dnp-Pro-Gln-Gly-Ile-Ala-Gly-Gln-D-Arg-OH (DNP-PQGIAGQ-D-R-OH) and MOCAc [(7-methoxy coumarin-4-yl) acetyl]-RPKPYANvaWMK(Dnp[2,4-dinitrophenyl])-NH(2) are substrates for matrix metalloproteinase 2 and matrix metalloproteinase 9.
