Description

• General description: Collagenase enzyme from Clostridium histolyticum has collagen binding domain (CBD) and polycystic kidney disease-like (PKD-like) domains. It also has Ca2+ binding site for calcium binding, which is crucial for its functionality.[1] Collagenase is used in the management of connective tissue disorder, Dupuytren′s contracture.[2]
• Application: Collagenase from Clostridium histolyticum has been used in the digestion:of pancreatic samples for islets isolation[3]of pulmonary artery samples for pulmonary vascular smooth muscle cells (PVSMCs) isolation[4]of cartilage samples for chondrocytes isolation[5]
• Biochem/physiol Actions: Collagenase is activated by four gram atom calcium per mole enzyme. It is inhibited by ethylene glycol-bis(beta-aminoethyl ether) - N, N, N′,N′-tetraacetic acid, beta-mercaptoethanol, glutathione, thioglycolic acid and 8-hydroxyquinoline.
• Caution: As supplied, this product is stable for one year at -20°C. There is no loss in FALGPA or protease activity in 30 days at 37°C, 50°C and -20°C. Solutions of crude collagenase are stable if frozen quickly in aliquots (at 10 mg/mL) and kept frozen at -20°C. Further freeze-thaw cycles will damage the solution. The product retains 100% activity over 7 hours when held on ice.
• Unit Definition: One collagen digestion unit (CDU) liberates peptides from collagen from bovine achilles tendon equivalent in ninhydrin color to 1.0 μmole of leucine in 5 hours at pH 7.4 at 37 °C in the presence of calcium ions. One FALGPA hydrolysis unit hydrolyzes 1.0 μmole of furylacryloyl-Leu-Gly-Pro-Ala per min at 25°C. One Neutral Protease unit hydrolyzes casein to produce color equivalent to 1.0 μmole of tyrosine per 5 hr at pH 7.5 at 37°C. One Clostripain Unit hydrolyzes 1.0 μmole of BAEE per min at pH 7.6 at 25°C in the presence of DTT.
• Preparation Note: This proudct is prepared from Type XI (C7657) Collagenase from Clostridium histolyticum. It also contains clostripain, nonspecific neutral protease and tryptic activities. Solutions are typically prepared at 1-2 mg/mL in TESCA buffer (containing 50 mM TES, 0.36 mM Calcium chloride, pH 7.4 at 37°C.