Storage: 2-8°C

UNSPSC Code: 12352200

RIDADR: NONH for all modes of transport

Application:
Clostridium collagenase from Roche has been used to prepare cells from many types of tissue, such as hepatocytes, adipocytes, pancreatic islets, epithelial cells, muscle cells, endothelial cells, etc. However, suitability of each lot of the enzyme for disruption of a particular tissue should be determined empirically.
Collagenase B has been used for preparation of cells from mouse aortas and colorectal cancer tissue.

General description:
Collagenase B is prepared from Clostridium histolyticum cultures by filtration, ammonium sulfate precipitation, dialysis, and lyophilization. Collagenase from Clostridium histolyticum is a collagenolytic enzyme. It interacts with collagen-like substances and is responsible for the degradation of collagen into small peptides. It is widely used for the disaggregation of many types of tissues (e.g., lung, heart, muscle, bone, adipose tissue, liver, kidney, cartilage, mammary gland, placentae, blood vessels, brain, tumors) and for the preparation of single-cell suspensions for the establishment of primary cell culture systems. Collagenase B is recommended when yield and viability are important.

Other Notes:
For life science research only. Not for use in diagnostic procedures.

Specifications:
Enzyme activity:
Collagenase activity: >0.15U/mg (according to W×¼nsch) (+25°C, 4-phenyl-azobenzyl-oxycar<wbr>bonyl-Pro-Leu-Gly-Pro-D-A<wbr>rg as the substrate)
Contaminating enzyme activities: trypsin, clostripain, and total proteolytic activity
Collagenase B has a normal to high collagenase activity and a higher than average clostripain activity (usually >10U/mg).

Inhibitors:
Collagenase inhibitors: EDTA, EGTA, Cys, His, DTT, 2-mercaptoethanol
Collagenase is not inhibited by serum.
Clostripain inhibitors: TLCK
Trypsin inhibitors: aprotinin, trypsin inhibitor (egg white, soybean), serum</wbr></wbr>

Preparation Note:
Activator: Ca²⁺
Working concentration: 0.5 to 2.5 mg/ml
Storage conditions (working solution): -15 to25 °C
Roche recommends reconstituting only the amount of lyophilizate needed for immediate use. The reconstituted solution can be stored at15 to25 °C for up to one week. Avoid repeated freezing and thawing since activity decreases after reconstitution.

Reconstitution:
Reconstitution in any balanced salt solution (e.g., HBSS)

Specificity:
Collagenase degrades native collagen. Clostripain, trypsin-like enzymes, and neutral proteases degrade other proteins as well.