650366-M

Tryptase, Human Lung

• Enzyme Commission number: 3.4.21.59 (BRENDA, IUBMB)
• UNSPSC Code: 12352202
• NACRES: NA.77

Properties

• form: liquid
• Quality Level: 100
• specific activity: ≥50 units/mg protein
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; avoid repeated freeze/thaw cycles
• storage temp.: −20°C

Description

General description

Native tryptase from human lung. Tryptase is a serine protease stored in mast cell granules. A tetrameric enzyme composed of four non-covalently bound subunits. Each subunit is reported to contain one active site. Reported to upregulate neoangiogenesis in carcinogenesis of the uterine cortex. Tryptase is also an important mediator of allergic reactions that activates G-protein-coupled receptors through proteolysis, thus amplifying histamine release.

Warning

Toxicity: Irritant (B)

Unit Definition

One unit is defined as the amount of enzyme that gives a change of 1 absorbance per min at 410 nm using N-benzoyl-Phe-Val-Arg-pNA as a substrate in 30 min at 25°C.

Physical form

In 1 M NaCl, 50 mM NaOAc, 50 µM heparin, pH 5.0.

Preparation Note

Prepared from tissue that has been shown by certified tests to be negative for HBsAg and for antibodies to HIV and HCV.

Reconstitution

Following initial thaw, aliquot and freeze (-20°C).

Other Notes

Benitez-Bribiesca, L., et al. 2001. J. Histochem. Cytochem.49, 1061.
He, S., et al. 1998. J. Pharmacol. Exp. Ther. 286, 289.
Molino, M., et al. 1997. J. Biol. Chem. 272, 4043.
Schwartz, L.B., and Bradford, T.R. 1986. J. Biol. Chem. 261, 7372.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class: 12 - Non Combustible Liquids
• wgk_germany: WGK 1