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I2393

Sigma-Aldrich

Interleukin-1β from rat

IL-1β, recombinant, expressed in E. coli, lyophilized powder, suitable for cell culture

Synonym(s):

IL-1β, Interleukin-1β from rat, Lymphocyte activating factor

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About This Item

MDL number:
MFCD01094098
UNSPSC Code:
12352202
NACRES:
NA.77

biological source

rat

Quality Level

100

recombinant

expressed in E. coli

assay

≥98% (SDS-PAGE and HPLC)

form

lyophilized powder

potency

0.01-0.1 ng/mL ED50/EC50

mol wt

17.3 kDa

packaging

pkg of 10 and 50 μg

technique(s)

cell culture | mammalian: suitable

impurities

<0.1 EU/μg

UniProt accession no.

Q63264

storage temp.

−20°C

Gene Information

rat ... Il1b(24494)

Related Categories

General description

Interleukin-1 (IL-1), originally known as Lymphocyte Activating Factor (LAF), activates T cells and lymphocytes, which then proliferate and secrete interleukin-2.1 IL-1 is primarily released from stimulated macrophages and monocytes, but is also released from several other cell types,2 and is thought to play a key role in inflammatory and immune responses.3 Other synonyms for IL-1 include: Endogenous Pyrogen (EP), Mitogenic Protein (MP), Helper Peak-1 (HP-1), T Cell Replacing Factor III (TRF III or TRFH), B cell Activating Factor (BAF) and B Cell Differentiation Factor (BDF).4 The two closely related agents, Interleukin-1α (IL-1α) and Interleukin-1β (IL-1β) bind to the same cell surface receptor, elicit nearly identical biological responses and yet share 25% homology in their amino acid sequence. Recombinant rat IL-1β is a 17.3 kDa protein containing 153 amino acid residues.

Physical form

Lyophilized from a 0.2 μm filtered buffered solution.

Analysis Note

The biological activity is measured in a cell proliferation assay using murine D10S cells.

Citation

1. Gery, I., et al., J. Exp. Med., 136, 128 (1972).
2. Oppenheim, J. J., et al., Immunol. Today, 7, 45 (1986).
3. Durum, S. K., et al., Annu. Rev. Immunol., 3, 263 (1985).
4. Aarden, L., et al., J. Immunol., 123, 2928 (1979).
5. Symons, J., et al., Lymphokines and Interferons, A Practical Approach, Clemens, M., et al., (eds.), IRL Press, Oxford (1987).

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Certificates of Analysis (COA)

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Articles

Interleukin Family (IL)

The Interleukins comprise a disparate group of cytokines and growth factors that are produced by and released from leukocytes. Interleukin-1β (1L-1β) is released primarily from stimulated macrophages and monocytes and plays a key role in inflammatory and immune responses and may induce anti-tumor immunity.

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