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P2714

Sigma-Aldrich

Protease Inhibitor Cocktail

lyophilized powder, for the inhibition of serine, cysteine and metallo-proteases, for general use, lyophilized powder

Synonym(s):

Protease Inhibitor Cocktail from bovine lung, Protease Inhibitor Mix, Protease inhibitor

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About This Item

UNSPSC Code:
12352200
NACRES:
NA.77

product name

Protease Inhibitor Cocktail powder, for general use, lyophilized powder

biological source

bovine lung

Quality Level

300

form

lyophilized powder

storage temp.

−20°C

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General description

The protease inhibitor cocktail has been optimized and tested for general use. It consists of water-soluble protease inhibitors that effectively inhibit serine, cysteine, and metalloproteases. This product is supplied as a lyophilized powder.

Specificity

Inhibits serine, cysteine, and metallo-proteases.

Application

Protease Inhibitor Cocktail powder has been used as a component:
  • in radioimmunoprecipitation assay buffer to lyse the avian crystalline lens samples for western blot analysis
  • in phosphate buffer solution (PBS) for grinding recombinant protein expressed leaves to purify virus-like particles (VLPs)
  • in PBS to dissolve lyophilized skin secretion sample of A. loloensis for peptide purification
  • in 0.1 M NaCl solution to wash and collect skin secretions of frog

Biochem/physiol Actions

The components of this mixture, such as AEBSF and Aprotinin act to inhibit serine proteases, including trypsin, chymotrypsin, and plasmin amongst others. Bestatin inhibits aminpeptidases. E-64 acts against cystein proteases. EDTA is an inhibitor of metalloproteases. Leupeptin acts against both serine and cystein proteases.

Components

This mixture contains individual components, including:

AEBSF at 2 mM
Aprotinin at 0.3 μM
Bestatin at 116 μ
E-64 at 14 μM
EDTA at 1 mM
Leupeptin at 1 μM

Each component has specific inhibitory properties.

Caution

The lyophilized powder is stable for 4 years when stored at -20°C.

Quantity

One bottle makes 100 mL of cocktail, which are sufficient to the inhibition of proteases present in approximately 20 gram of cell extract.

Not all extracts contain the same levels of endogenous enzymes, and it may be necessary to adjust the volume of cocktail required.

Preparation Note

This product is supplied as a lyophilized powder. One bottle prepares 100 mL of a cocktail solution.

Other Notes

For R&D use only. Not for drug, household, or other uses. Please consult the Safety Data Sheet for information regarding hazards and safe handling practices.

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Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315 - H319

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Five novel antimicrobial peptides from skin secretions of the frog, Amolops loloensis
Wang M, et al.
Journal of biological and chemical chronicles, 155(1), 72-76 (2010)
Safety and immunogenicity of plant-produced African horse sickness virus-like particles in horses
Dennis SJ, et al.
Veterninary Research, 49(1), 1-6 (2018)
F Maier et al.
Osteoarthritis and cartilage, 27(9), 1382-1391 (2019-05-24)
Given the structural changes associated with the progression of Osteoarthritis (OA), we hypothesized that patterns of through-thickness, large-strain shear evolve with early-stage OA. We therefore aimed to determine whether and how patterns of shear strains change during early-stage OA to
Giorgio Ramadori et al.
Nature communications, 10(1), 3545-3545 (2019-08-09)
Tens of millions suffer from insulin deficiency (ID); a defect leading to severe metabolic imbalance and death. The only means for management of ID is insulin therapy; yet, this approach is sub-optimal and causes life-threatening hypoglycemia. Hence, ID represents a
Céline Méhats et al.
PloS one, 3(10), e3445-e3445 (2008-10-23)
Prolonged neonatal exposure to hyperoxia is associated with high mortality, leukocyte influx in airspaces, and impaired alveolarization. Inhibitors of type 4 phosphodiesterases are potent anti-inflammatory drugs now proposed for lung disorders. The current study was undertaken to determine the effects
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While aprotinin and bovine pancreatic trypsin inhibitor (BPTI) are the same protein sequence, the term aprotinin is typically used when describing the protein derived from bovine lung.

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Select different protease inhibitor types based on your needs to prevent protein degradation during isolation and characterization and safeguard proteins in sample prep.

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Select different protease inhibitor types based on your needs to prevent protein degradation during isolation and characterization and safeguard proteins in sample prep.

Protease Inhibitor Selection: Avoid Protein Loss in Sample Prep

Select different protease inhibitor types based on your needs to prevent protein degradation during isolation and characterization and safeguard proteins in sample prep.

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