Matrix Metalloproteinases (MMPs) are a large family of endopeptidases. Collectively, MMPs can degrade all kinds of extracellular matrix proteins, and can also process a number of bioactive molecules. They are known to be involved in the cleavage of cell surface receptors, the release of apoptotic ligands, and chemokine/cytokine inactivation. MMPs are also thought to play a major role in cell behaviors such as cell proliferation, migration (adhesion/dispersion), differentiation, angiogenesis, apoptosis, and host defense. This peptide is a highly soluble fluorogenic MMP substrate for MMP-2, 8, 12, 13 and 14, containing the MMP cleavable Gly-Leu bond and EDANS/DABCYL. Fluorogenic assays using TNO211 are sensitive and can detect MMP activity in culture medium from endothelial cells and untreated synovial fluid from patients. Abs/Em = 340/490 nm.