Collagenase-3 Liquid. In 150 mM NaCl, 50 mM Tris-HCl, 5 mM CaCl2, pH 7.5. AVOID FREEZE/THAW CYCLES. Full-length recombinant, human MMP-13 fused to a His•Tag® sequence and expressed in S. frugiperda insect cells. This 452 amino acid proenzyme contains the N-terminal propeptide, the Ca2+- and Zn2+-binding catalytic domain, the hinge region, and the C-terminal hemopexin domain. Hydrolyzes collagen type II 5 to 6 times faster than collagens Type I and III. Exhibits high activity towards gelatin and degrades a1-antichymotrypsin and plasminogen activator inhibitor-2 (PAI-2). Specific activity: ≥50 mU/mg protein. One unit is defined as the amount of APMA-activated enzyme that will hydrolyze 1.0 µmol MCA-Pro-Leu-Gly-Leu-Dpa-Ala-Arg-NH2 (Cat. No. 03-32-5032) per min at 37°C, pH 7.5. Purity: ≥90% by SDS-PAGE. Note: 1 mU = 1 milliunit. Ref.: Herget, J., et al. 2003. Am. J. Physiol. 285, 4199. Nagase, H. 1997. Biol. Chem. 378, 151. Knäuper, V., et al. 1996. J. Biol. Chem. 271, 1544. Knauper, V., et al. 1996. J. Biol. Chem. 271, 17124. Pei, D., and Weiss, S.J. 1996. J. Biol. Chem. 271, 9135. Knight, C.G., et al. 1992. FEBS Lett. 296, 263. |