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P2289 Sigma

Endoproteinase Lys-C from Lysobacter enzymogenes

lyophilized powder



Frequently Asked Questions

Frequently Asked Questions are available for this Product.

General description

Endoproteinase Lys-C is an enzyme that preferentially cleaves at the carboxyl side of lysine residues.

Unit Definition

One unit will hydrolyze 1.0 μmole of N-p-tosyl-Gly-Pro-Lys p-nitroanilide per min at pH 7.7 at 25 °C.


Endoproteinase Lys-C from Lysobacter enzymogenes is useful in the determination of primary structures of proteins. It has been used in a study to investigate the evidence for trisulfide bonds in a recombinant variant of a human IgG2 monoclonal antibody.

Endoproteinase Lys-C has been used for the digestion monoclonal antibodies for disulfide bond assignment.

Biochem/physiol Actions

Endoproteinase Lys-C inactivates the enzyme inositol monophosphatase by cleaving it at a single site directly after Lys 36.

Price and Availability

Biomedical Applications
Safety & Documentation

Safety Information

Signal word 
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option: http://www.sigmaaldrich.com/catalog/AdvancedSearchPage.do
What is the molecular weight of Endoproteinase Lys-C from Lysobacter enzymogenes, Product P2289?
The molecular weight is 30,000 Daltons (30 kDa).
What amount of Endoproteinase Lys-C from Lysobacter enzymogenes, Product P2289, is present in the 3 unit package size?
This product is prepared from material with a specific activity of 150 units per mg. Therefore there is approximately 20 micrograms per vial.
Is the protease Endoproteinase Lys-C from Lysobacter enzymogenes, Product P2289, active in the presence of detergents?
This enzyme is active in the presence of 1% Triton X-100 and also 0.1% SDS.
How do I find price and availability?
There are several ways to find pricing and availability for our products.  Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers. 
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS. To access the shipping information for this material, use the link on the product detail page for the product, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
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Protocols & Articles

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Application Index | Enzyme Index | Substrate Index | Inhibitor Index | Cofactor Index | Lectin Index
Keywords: Cell signaling, Diagnostic, Drug discovery, Molecular biology

Peer-Reviewed Papers


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