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P8465

Protease Inhibitor Cocktail

lyophilized powder, for the inhibition of serine, cysteine, aspartic, metalloproteases and aminopeptidases, for use with bacterial cell extracts, lyophilized powder

Synonyme(s) :

Protease inhibitor

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A propos de cet article

UNSPSC Code:
12352200
NACRES:
NA.77
Form:
lyophilized powder
Solubility:
water: soluble
Storage temp.:
−20°C
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Nom du produit

Protease Inhibitor Cocktail powder, for use with bacterial cell extracts, lyophilized powder

Quality Segment

form

lyophilized powder

input

mammalian sample(s)

solubility

water: soluble

storage temp.

−20°C

General description

The Protease Inhibitor Cocktail is a lyophilized powder for use in the inhibition of proteases present in bacterial cell extracts.

The product contains individual components that target serine, cysteine, aspartic, and metalloproteases, as well as aminopeptidases.

Application

The protease inhibitor cocktail improves the yields of intact proteins by adding inhibitors to enzymes that modify proteins present in cell extracts. This product has been optimized and tested for bacterial cell use, with broad specificity against serine, cysteine, and aspartic proteases, metalloproteases, and aminopeptidases.

Biochem/physiol Actions

This mixture contains individual components, including AEBSF at 23 mM, EDTA at 100 mM, Bestatin at 2 mM, Pepstatin A at 0.3 mM, and E-64 at 0.3 mM. AEBSF acts to inhibit serine proteases, including trypsin, chymotrypsin, and plasmin amongst others. Bestatin inhibits aminpeptidases. E-64 acts against cystein proteases. Pepstatin A inhibits acid proteases. EDTA is an inhibitor of metalloproteases.

Features and Benefits

Broad specificity against serine, cysteine, aspartic, and metalloproteases, as well as aminopeptidases.

Contains individual components, including AEBSF, EDTA, Bestatin, Pepstatin A, and E-64, each targeting specific types of proteases.

Lyophilized powder is stable for at least 2 years when stored unopened at -20°C.

Supplied with a vial of DMSO for preparation of a cocktail solution.

One mL of the cocktail solution is recommended for the inhibition of protease activity found in 20 mL of cell lysate from 4g of E. coli cells.

Preparation Note

A cocktail solution may be prepared by adding 1 mL of DMSO and 4 mL of deionized water to the 5 mL size or 5 mL of DMSO and 20 mL of deionized water to the 25 mL size. One mL of the cocktail solution is recommended for the inhibition of the protease activity found in 20 mL of cell lysate from 4g of E. coli cells.

Disclaimer

The lyophilized powder is stable for at least 2 years when stored unopened at -20°C. It is also supplied with a vial of DMSO. A prepared solution in DMSO and water will remain clear and colorless for approximately 24 hours at 4°C, before the inhibitors will precipitate out.

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for use with bacterial cell extracts, lyophilized powder

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for use in tissue culture media, DMSO solution

description

for use with mammalian cell and tissue extracts, DMSO solution

form

lyophilized powder

form

DMSO solution

form

DMSO solution

form

DMSO solution

Quality Level

300

Quality Level

300

Quality Level

200

Quality Level

300

solubility

water: soluble

solubility

water: soluble

solubility

water: soluble

solubility

water: soluble

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

input

mammalian sample(s)

input

plant, fungi and insect sample(s)

input

mammalian sample(s)

input

mammalian sample(s)


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Pictogrammes

Health hazardCorrosionExclamation mark

Mot-clé

Danger

Codes de danger

Hazard Classifications

Acute Tox. 4 Inhalation - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A - STOT RE 2 Inhalation

Organes cibles

Respiratory Tract

Classe de stockage

8A - Combustible corrosive hazardous materials

Que se passe-t-il ?

WGK 3

EPI (équipement de protection individuelle)

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges



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Questions

  1. Does the protease inhibitor P8465 inhibit PreScission Protease? We utilized P8465 inhibitors in the purification of a GST-tagged protein fraction, and observed low activity of the PreScission protease (GE27-0843-01) on the dialyzed (using 10 kDa MWCO) GST-tagged protein fraction. Can you provide insight into the inhibition of the PreScission protease by this protease inhibitor cocktail?

    1 answer
    1. Our lab has not conducted testing on the inhibition of P8465 on PreScission Protease. However, considering that the protein structure of PreScission Protease contains a cysteine nucleophile in its active site and the protein folding resembles that of chymotrypsin-like serine protease, it is likely that the inhibition is caused by ABESF and/or E-64, both of which are included in the cocktail of P8465.

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