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MSSAFE

Sigma-Aldrich

MS-SAFE Protease and Phosphatase Inhibitor

Synonym(s):

Mass Spectrometry Safe Protease and Phosphatase Inhibitor Cocktail

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About This Item

UNSPSC Code:
12352200
NACRES:
NA.77

description

for use with mammalian cell and tissue extract, lyophilized powder

Quality Level

200

form

powder

solubility

water: 0.1 g/mL, clear, colorless

storage temp.

2-8°C

Related Categories

General description

Mass spectrometry (MS) compatible protease inhibitor cocktail and phosphatase inhibitor cocktail, with broad specificity for the inhibition of:
  • Serine, cysteine and aspartic proteases, and metalloproteases
  • Tyrosine, serine/threonine, acid and alkaline phosphatases
All inhibitors and fillers were chosen so as not to interfere with LC-MS analyses. Any inhibitors capable of covalent, irreversible protein modification were avoided. This cocktail is EDTA-free. All inhibitors were selected to allow facile downstream sample processing, such as immobilized metal affinity chromatography (IMAC) for His-tagged protein purification and, uniquely, phosphopeptide enrichment.

Specificity

Protease inhibitors: serine, cysteine and aspartic proteases, and metalloproteases
Phosphatase inhibitors: tyrosine, serine/threonine, acid and alkaline phosphatases

Application

MS-SAFE Protease and Phosphatase Inhibitor has been used to measure ribosomal protein S6 kinase (S6K) activity.
Tested in mammalian cell lysates and liver tissue extracts. Designed for use in samples to be analyzed by mass spectrometry.

Features and Benefits

Comprehensive protease and phosphatase inhibitor cocktail for mass spectrometry analysis

Compatible with downstream sample processing such as His-tagged protein purification and phosphopeptide enrichment

Allows accurate measurement of protein activity and identification of phosphorylation sites.

Components

Protease inhibitors:
  • Bestatin hydrochloride
  • Leupeptin
  • Phosphoramidon disodium salt
  • Pepstatin A
  • Elastatinal
  • Aprotinin
  • Nafamostat mesylate
  • Antipain
Phosphatase inhibitors
  • Okadaic acid
  • Sodium fluoride
  • Sodium orthovanadate
  • Bromotetramisole oxalate
Fillers
  • β-lactose
  • DL-leucine

Quantity

One vial makes 20 mL of 1× inhibitor cocktail working solution, using either water or extraction/lysis buffer. Alternatively, a 10× concentrated solution may be prepared by adding 2 mL of water or extraction/lysis buffer. This 10× solution may then be diluted 10-fold into extraction/lysis buffer as needed for a 1× working solution.

Physical form

Lyophilized powder that is water-soluble

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H302 - H315 - H319

Hazard Classifications

Acute Tox. 4 Oral - 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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Mark D Schuchard et al.
BioTechniques, 39(2), 239-247 (2005-08-25)
The inclusion of protease inhibitors in serum or plasma samples has been found to significantly impact the isoform profile of selected plasma proteins as seen on 2-dimensional electrophoresis (2-DE) gels. With the addition of a protease inhibitor cocktail, several human
Targeted nanoconjugate co-delivering siRNA and tyrosine kinase inhibitor to KRAS mutant NSCLC dissociates GAB1-SHP2 post oncogene knockdown.
Srikar, R., et al.
Scientific Reports, 6, 30245-30245 (2016)
Evidence for the Role of YWHA in Mouse Oocyte Maturation
Detwiler, Ariana Claire
Thesis, 22-22 (2015)
Chandresh R Gajera et al.
Journal of neuroscience methods, 312, 73-83 (2018-11-23)
Synaptic alterations, especially presynaptic changes, are cardinal features of neurodegenerative diseases and strongly correlate with cognitive decline. We report "Mass Synaptometry" for the high-dimensional analysis of individual human synaptosomes, enriched nerve terminals from brain. This method was adapted from cytometry
Identification and characterization of PPARα ligands in the hippocampus.
Roy, A., et al.
Nature Chemical Biology, 12, 1075-1083 (2016)
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