407615-M

Interleukin-1β, Human, Recombinant, E. coli

• Synonym(s): Interleukin-1β, Human, Recombinant, E. coli, rhIL-1β
• CAS Number: 97599-21-8
• MDL number: MFCD00064956
• UNSPSC Code: 12352202
• NACRES: NA.77

Properties

• description: Merck USA index - 14, 4993
• Quality Level: 100
• Assay: ≥97% (SDS-PAGE)
• form: lyophilized
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze
• impurities: ≤1.0 EU/μg Endotoxin (EU/μg IL-1β)
• storage temp.: −70°C

Description

General description

Recombinant, human interleukin-1β expressed in E. coli. Major form of interleukin-1 secreted by monocytes and macrophages. IL-1β is activated by proteolytic cleavage of the precursor molecule. Increases nitric oxide production in smooth muscle cells and suppresses apoptosis in rat ovarian follicles. Involved in inflammatory and immune responses and promotes wound healing. Induces nitric oxide synthase in insulin-producing cells. 1 µg of IL-1β corresponds to 1.9 x 10⁵ WHO units.

Biochem/physiol Actions

ED₅₀ = <12 pg/ml as measured in a cell proliferation assay using the murine T-cell line, D10.G4.1 (Symons, J.A. et al. 1987)

Physical form

Lyophilized from sterile-filtered PBS, 50 µg BSA/µg IL-1β.

Preparation Note

Following reconstitution, aliquot and freeze (-70°C) for long term storage or refrigerate (4°C) for short term storage. Avoid freeze/thaw cycles of solutions. Stock solutions are stable for up to 1 month at 4°C or for up to 3 months at -70°C.

Reconstitute to a concentration of ≥10 µg/ml with sterile PBS containing ≥0.1% HSA or BSA.

Other Notes

Chun, S.Y., et al. 1995. Endocrinology136, 3120.
Kunz, D., et al. 1994. Biochem. J. 304, 337.
Eizirik, D.L., et al. 1993. FEBS Lett. 317, 62.
Dinarello, C>A> 1991. Blood77, 1627.
Casagli, M.C., et al. 1989. Biochem. Biophys. Res. Commun.162, 357.
Symons, J.A., et al. 1987. In Lymphokines and interferons, A Practical Approach (Clemens, M.J., et al. eds.) IRL Press, Oxford p. 272.

Legal Information

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

Disclaimer

Toxicity: Standard Handling (A)

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable