437996

5-Lipoxygenase, Human, Recombinant, S. fruigiperda

5-Lipoxygenase, Human, Recombinant, S. frugiperda E.C 1.13.11.34, catalyzes the formation of 5(S)-HpETE from arachidonic acid and its subsequent conversion to leukotriene A4.

• Synonym(s): 5-LO
• Enzyme Commission number: 1.13.11.34 (BRENDA, IUBMB)

Properties

• Quality Level: 100
• form: liquid
• specific activity: ~20 U/mg
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; avoid repeated freeze/thaw cycles
• shipped in: wet ice
• storage temp.: −70°C

Description

General description

Recombinant, human 5-Lipoxygenase expressed in S. fruigiperda insect cells using a baculovirus overexpression system. 5-LO catalyzes the formation of 5(S)-HpETE from arachidonic acid and its subsequent conversion to leukotriene A₄. It is localized in the cytosol of resting human and rat peripheral blood neutrophils, whereas it is found in the nucleus in rat basophilic leukemia cells and human alveolar macrophages. Upon stimulation of the cell, 5-LO translocates to the nuclear membrane where it is found in association with 5-LO activating protein (FLAP) and with the 85 kDa cPLA₂.

Recombinant, human 5-Lipoxygenase expressed in S. fruigiperda insect cells using a baculovirus overexpression system. It is localized in the cytosol of resting neutrophils, and is found in the nucleus in rat basophilic leukemia cells and human alveolar macrophages. Upon stimulation of the cell, 5-LO translocates to the nuclear membrane where it is found in association with 5-LO activating protein (FLAP) and with the 85 kDa cPLA₂.

Warning

Toxicity: Standard Handling (A)

Unit Definition

One unit is defined as the amount of enzyme that consumes 1.0 nmol of oxygen per min at 25°C in 50 mM Tris-HCl, 100 µM arachidonate, 2 mM CaCl₂, 1 mM ATP, 250 µM oxygen. Oxygen consumption can be measured using a oxygraph equipped with a Clark oxygen electrode.

Physical form

In 100 mM Tris containing 5 mM EGTA, pH 8.0.

Reconstitution

Following initial thaw, aliquot and freeze (-70°C).

Other Notes

Brock, T.G., et al. 1997. J. Biol. Chem.272, 8276.
Pouliot, M., et al. 1996. Eur. J. Biochem.238, 250.
Zhang, Y.Y., et al. 1993. J. Biol. Chem.268, 2535.
Shimizu, T., et al. 1984. Proc. Natl. Acad. Sci. USA81, 689.

Legal Information

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

Safety Information

• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable