Collagenase D

Enzyme Commission (EC) Number:

3.4.24.3 ( BRENDA | IUBMB )

Кат. номер

11088858001

11088882001

11088866001

Collagenase D is prepared from Clostridium histolyticum cultures by filtration, ammonium sulfate precipitation, dialysis, and lyophilization.
Collagenase degrades native collagen. Clostripain, trypsin-like enzymes, and neutral proteases degrade other proteins as well.
Collagenase from C. histolyticum 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 D is recommended when functionality and integrity of cell-surface proteins are important.
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.
Contents
Lyophilizate, nonsterile
Collagenase from Roche is assayed in Wnsch units (1 µmol of product formed per minute at +25 °C with Wnsch substrate).
Frequently, collagenase activities are given in Mandl units (1 µmol leucine liberated from collagen in 5 hours at +37 °C).
Unfortunately, there is no consistent conversion factor between the two units of activity, since the Mandl unit depends, in part, on the concentration of contaminating proteases in the collagenase preparation, an indefinable variable. A purer collagenase preparation would actually give a lower specific activity in Mandl units than a crude preparation. Clostridium preparations typically give conversion factors of approximately 1:1800 (e.g., a particular lot of Clostridium collagenase contained approximately 0.15 Wnsch U/mg and 250 Mandl U/mg).
Lyophilizate, nonsterile.
Activator: Ca2+
Working concentration: 0.5 - 2.5mg/ml
Storage conditions (working solution): -15 to -25°C
Roche recommends reconstituting only the amount of lyophilizate needed for immediate use. The reconstituted solution can be stored at -15 to -25°C for up to one week. Avoid repeated freezing and thawing since activity decreases after reconstitution.

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)
Enzyme activity:
Collagenase activity: >0.15 U/mg (according to Wunsch) (+25°C, 4-phenyl-azobenzyl-oxycarbonyl-Pro-Leu-Gly-Pro-D-Arg as the substrate)
Contaminating enzyme activities: trypsin, clostripain, and total proteolytic activity
Collagenase D has a normal to high collagenase activity and very low tryptic activity (usually <0.2 units/mg, BAEE as substrate).
Reconstitution in any balanced salt solution (e.g., HBSS)
For life science research only. Not for use in diagnostic procedures.

Quality Level	100
sterility	non-sterile
form	lyophilized
packaging	pkg of 100 mg (11088858001), pkg of 2.5 g (11088882001), pkg of 500 mg (11088866001)
Торговая марка	Roche
concentration	(working concentration: 0.5 - 2.5 mg/ml)
optimum pH	6.0-8.0
shipped in	wet ice
storage temp.	2-8°C

RIDADR

NONH for all modes of transport