CO-RO
Roche
cOmplete™ Protease Inhibitor Cocktail
Tablets provided in glass vials
Synonym(s):
protease inhibitor tablet
About This Item
Recommended Products
form
tablet
packaging
vial of 20 tablets (11697498001)
vial of 3 × 20 tablets (11836145001)
manufacturer/tradename
Roche
optimum pH
<7.5
solubility
aqueous buffer: soluble
absorption
0.08 at 280 nm
storage temp.
2-8°C
General description
Specificity
Application
- lysis buffer for the homogenisation of rat cavernosal smooth muscle (CSM) for obtaining membranous and cytosolic fractions
- cold buffer A for preparing cytosolic and nuclear extracts
- lysis buffer for homogenisation of tissues for determining protein expression by western blot
- phosphate buffered saline (PBS) for the lysis of rat retinae for enzyme linked immunosorbent assay (ELISA)
cOmplete contains both reversible and irreversible protease inhibitors. Therefore, we recommend the addition of cOmplete to all stock buffers and solutions normally protected with protease inhibitors, and not just during the initial purification steps.
cOmplete contains EDTA (1 tablet yields a 1 mM EDTA solution in 50 ml). Therefore, the extraction buffer should not contain divalent cations like Ca2+ , Mg2+, or Mn2+, otherwise the inhibition of the metalloproteases might be incomplete. If the protein of interest will be purified by IMAC (Immobilized Metal Affinity Chromatography), for example, Poly-His-tagged recombinant proteins, EDTA has to be eliminated (e.g., by dialysis) prior to the chromatography.
Alternatively, the product cOmplete EDTA-free can be used. These tablets are identical to cOmplete, with the exception that no EDTA or other chelating agent is present.
cOmplete Tablets inhibit proteolytic activity in large extraction volumes (up to 50 ml). If you are working with smaller volumes (up to 10 ml), we recommend to use cOmplete, Mini. The composition of the cOmplete, Mini Tablet is identical to the normal cOmplete Tablet.
Features and Benefits
- Easy-to-use: Simply drop a quick-dissolving tablet into your buffer.
- Complete protection: Instantly protect your proteins against a broad range of proteases.
- Flexible: Protect proteins in extracts from almost any tissue or cell, including animals, plants, yeast, bacteria, or fungi.
- Safe: Choose non-toxic inhibitors that pose no risk to you or those around you.
- Suitable for IMAC purification: Purify poly-histidine tagged proteins with cOmplete His-Tag Purification Resin.
Components
Quality
Physical form
Preparation Note
Working solution: Preparation of Working Solution:
One cOmplete Protease Inhibitor Tablet is sufficient for the inhibition of the proteolytic activity in 50 ml extraction solution. If very high proteolytic activity is present, one tablet should be used for 25 ml extraction buffer. Tablets can be added directly to the extraction medium. Alternatively, a stock solution (25 X conc.) can be prepared.
Preparation of Stock solution (25 X conc.):
Dissolve one cOmplete Protease Inhibitor tablet in 2 ml dist. water or in 2 ml 100 mM phosphate buffer, pH 7.0. The stock solution can also be prepared in 10 mM Tris buffer, pH 7.2 to 7.5.
Storage conditions (working solution): The stock solution can be stored at 2 to 8 °C for 1 to 2 weeks, or at least 12 weeks at -15 to -25 °C.
Reconstitution
Other Notes
Legal Information
signalword
Danger
hcodes
Hazard Classifications
Eye Dam. 1 - Skin Corr. 1B
Storage Class
8A - Combustible, corrosive hazardous materials
wgk_germany
WGK 2
flash_point_f
does not flash
flash_point_c
does not flash
Certificates of Analysis (COA)
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