IL-1β

CRP0885

Recombinant Human IL-1 beta produced in E.coli is a single non-glycosylated polypeptide chain containing 153 amino acids and having a molecular mass of approximately 17.3 kDa.

IL-1 beta is a proinflammatory cytokine produced in a variety of cells including monocytes, tissue macrophages, keratinocytes and other epithelial cells. Both IL-1 alpha and IL-1 beta binds to the same receptor and has similar if not identical biological properties. These cytokines have a broad range of activities including, stimulation of thymocyte proliferation, by inducing IL-2 release, B-cell maturation and proliferation, mitogenic FGF-like activity and the ability to stimulate the release of prostaglandin and collagenase from synovial cells. However, whereas IL-1 beta is a secreted cytokine, IL-1 alpha is predominantly a cell-associated cytokine.

>98% by SDS-PAGE and HPLC analyses.

Lyophilized from a 0.2mm filtered concentrated (1.0mg/ml) solution in PBS, pH 7.5.

Fully biologically active when compared to standard. The ED50 as determined by the dose-dependant stimulation of murine D10S cells is less than 1.0 pg/ml, corresponding to a Specific Activity of 1.0 x 109 IU/mg.

Less than 1EU/mg of rHuIL-1β as determined by LAL method.

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at <-20°C. Further dilutions should be made in appropriate buffered solutions.

This lyophilized preparation is stable at 2-8°C, but should be kept at -20°C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8°C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20°C to -70°C. Avoid repeated freeze/thaw cycles.

Gene Name

IL1B

Synonyms

IL-1; IL1F2; IL1-BETA; Catabolin;IL-1B;pro-interleukin-1-beta; Interleukin-1 beta precursor; interleukin 1 beta; preinterleukin 1 beta; IL1B_HUMAN.

GeneID

3553

mRNA Refseq

NM_000576

Protein Refseq

NP_000567

MIM

147720

UniProt ID

P01584

Chromosome Location

2q14

Pathway

Alzheimer's disease; Apoptosis; Cytokine-cytokine receptor interaction; Hematopoietic cell lineage; MAPK signaling pathway; Toll-like receptor signaling pathway; Type I diabetes mellitus.

Function

interleukin-1 receptor binding;protein binding;signal transducer activity