Mca-KPLGL-Dap(Dnp)-AR-NH2 TFA is a fluorogenic substrate for matrix metalloproteinases (MMPs). 7-methoxycoumarin-4 acetyl (Mac) is released and its fluorescence can be used to quantify MMP activity. Mac displays Ex/Em of 328/420 nm[1].
References
[1] Ulf Neumann, et al. Characterization of Mca-Lys-Pro-Leu-Gly-Leu-Dpa-Ala-Arg-NH2, a fluorogenic substrate with increased specificity constants for collagenases and tumor necrosis factor converting enzyme. Comparative Study Anal Biochem. 2004 May 15;328(2):166-73. DOI:10.1016/j.ab.2003.12.035
