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P1867 Sigma

Plasmin from human plasma

lyophilized powder, ≥2.0 units/mg protein

Synonym: Fibrinolysin



Frequently Asked Questions

Frequently Asked Questions are available for this Product.

General description

Plasmin functions as a key enzyme of the fibrinolytic cascade, and is also important in inflammation processes.


Package size based on protein content

Unit Definition

One unit will produce one μmole of p-Nitroanilide from D-Val-Leu-Lys-p-Nitroanilide per minute at pH 7.5 at 37 °C.

Physical form

Lyophilized powder containing sodium phosphate, mannitol, and NaCl.


A complex between plasmin and an inhibitor has been isolated in a study via affinity chromatography from urokinase-activated human plasma. It has also been used in a study to investigate activation of human epithelial sodium channel (ENaC) by plasmin and chymotrypsin.

Biochem/physiol Actions

Plasmin exhibits preferential cleavage at the carboxyl side of lysine and arginine residues with higher selectivity than trypsin. Converts polymerized fibrin into soluble products.
pH Optimum: 8.5
pH 7.5: ~40% of maximal activity, pH 9.5: ~50% of maximal activity
Temperature Optimum: 37 °C with rapid inactivation at 56 °C

Plasmin is inhibited by α 2-antiplasmin which binds to plasmin blocking its interaction with fibrin. Plasmin digests the N-terminal region of the cytoplasmic protein αsynuclein preventing its uptake by surrounding cells.

Price and Availability

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Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Protocols & Articles


Plasma Derived Proteins and Enzymes

Despite their complexity, blood and plasma are abundant biological resources for the discovery of drug targets and biomarkers for human disease. It is estimated that plasma may contain as many as 40,...
BioFiles 2006, 1.5, 2.
Keywords: Applications, Gas chromatography, Type


Enzymatic Assay of Plasmin with D-Val-Leu-Lys-p-Nitroanilide Dihydrochloride

This scope of this procedure applies to products that have a specification for the enzymatic activity of plasmin.
Keywords: Enzyme activity, Extinction coefficient

Related Content

Enzymes & Proteins

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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