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I9401

Sigma-Aldrich

Interleukin-1β human

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

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Synonym(s):
IL-1β, Lymphocyte activating factor
MDL number:
UNSPSC Code:
12352202

biological source

human

Quality Level

recombinant

expressed in E. coli

Assay

≥98% (SDS-PAGE)

form

lyophilized powder

potency

≤12 pg/mL ED50

quality

endotoxin tested

mol wt

17.3 kDa

packaging

pkg of 5 and 25 μg
pkg of 25 μg

technique(s)

cell culture | mammalian: suitable

color

white to off-white

UniProt accession no.

storage temp.

−20°C

Gene Information

human ... IL1B(3553)

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Biochem/physiol Actions

Interleukin-1 (IL-1), originally known as Lymphocyte Activating Factor (LAF), activates T cell lymphocytes, which then proliferate and secrete interleukin-2 (IL-2). IL-1 is released primarily from stimulated macrophages and monocytes, but has also been shown to be released from several other types and is thought to play a key role in inflammatory and immune responses. 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 TRFM), B Cell Activating Factor (BAF) and B Cell Differentiation Factor (BDF) The two closely related agents Interleukin-1α (IL-1α) and Interleukin-1β (IL-1β) share 62% homology in amino acid sequence and elicit nearly identical biological responses. IL-1α and IL-1β are both approximately 17 kDa with some heterogeneity in the amount of glycosylation.

Physical form

Lyophilized from a 0.2 μm filtered buffered solution.

Analysis Note

The biological activity is measured by the dose-dependent stimulation of MTS cleavage by murine D10S cells.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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