Detects human IFN-beta in direct ELISAs and Western blots. In direct ELISAs, less than 1% cross-reactivity with recombinant mouse IFN‑ beta 1, recombinant human (rh) IFN-alpha 2, rhIFN-gamma, recombinant cotton rat (rcr) IFN-alpha and rcrIFN-gamma is observed.
Polyclonal Goat IgG
E. coli-derived recombinant human IFN-beta
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
<0.10 EU per 1 μg of the antibody by the LAL method.
Measured by its ability to neutralize IFN‑ beta inhibition of EMCV-induced cytopathy in the HeLa human cervical epithelial carcinoma cell line. Meager, A. (1987) in Lymphokines and Interferons, a Practical Approach. Clemens, M.J. et al. (eds): IRL Press. 129. The Neutralization Dose (ND50) is typically 0.05-0.2 µg/mL in the presence of 50 pg/mL Recombinant Human IFN‑ beta.
Please Note: Optimal dilutions should be determined by each laboratory for each application.
are available in the Technical Information section on our website.
IFN‑ beta Inhibition of EMCV-induced Cytopathy and Neutralization by Human IFN‑ beta Antibody.
Recombinant Human IFN‑ beta (Catalog # 8499-IF) reduces the Encephalomyocarditis Virus (EMCV)-induced cytopathy in the HeLa human cervical epithelial carcinoma cell line in a dose-dependent manner (orange line), as measured by crystal violet staining. Inhibition of EMCV activity elicited by Recombinant Human IFN‑ beta (50 pg/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Human IFN‑ beta Antigen Affinity-purified Polyclonal Antibody (Catalog # AF814). The ND50 is typically 0.05-0.2 µg/mL.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
Reconstitution Buffer Available
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70 degreesC as supplied. 1 month, 2 to 8 degreesC under sterile conditions after reconstitution. 6 months, -20 to -70 degreesC under sterile conditions after reconstitution.
IFN-beta (interferon beta; also fibroblast IFN) is a secreted, monomeric 23-24 kDa member of the alpha/beta interferon family of molecules. It can be produced by almost all cell types in response to bacterial DNA or viral double-stranded RNA and is abundantly secreted by circulating plasmacytoid DCs. IFN-beta drives monocytic transformation into DCs, and it appears to stimulate a B cell switch from from IgM to IgG secretion. Mature human IFN-beta is 166 amino acids (aa) in length (aa 22-187) and contains one phosphorylation site at Ser140. There is one potential alternative start site at Met22. Full-length human IFN-beta (aa 22-187) shares 47% aa identity with mouse IFN-beta.
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