Mca-KPLGL-Dap(Dnp)-AR-NH2 is a broad spectrum fluorogenic FRET substrate suitable for matrix metalloproteinases including intestinal collagenase (MMP-1), neutrophil collagenase (MMP-8) collagenase 3 (MMP-13), gelatinase A (MMP-2), gelatinase B (MMP-9), m