Thermo Fisher Scientific Rat IFN-beta Recombinant Protein

Applications

Tested Dilution

Publications

Western Blot (WB)

Assay-dependent

-

ELISA (ELISA)

Assay-dependent

-

Immunoprecipitation (IP)

Assay-dependent

-

Product Specifications

Species

Mouse, Rat

Expression System

CHO cells

Molecular weight

19.68 kDa

Class

Recombinant

Type

Protein

Purity

>95%

Endotoxin concentration

<1 EU/µg

Activity

EC50 ~ 1 U/mL; determined by use of the cytopathic effect inhibition assay described in [Rubinstein, S. et al. (1981). J. Virol. 37, 755-758]; [Familletti, P.C. et al. (1981). Methods in Enzymology, Vol. 78, 387-394]As there is no international Rat IFN-alpha standard, units are determined with respect to the international reference standard for mouse interferon alpha/beta (mouse IFN-alpha/beta) provided by the National Institutes of Health.

Conjugate

Unconjugated Unconjugated Unconjugated

Form

Lyophilized

Purification

purified

Storage buffer

PBS with 0.125M trehalose

Contains

no preservative

Storage conditions

4° C

Shipping conditions

Wet ice

Product Specific Information

After receipt, this product should be kept at -20ºC while lyophilized and at -70°C after reconstitution in sterile distilled water for retention of full activity. After reconstitution, the contents of the tube should be apportioned in separate tubes so that freezing and thawing is kept to a minimum. After thawing, this product is stable for at least four weeks at 4ºC. Further dilute only in buffers containing protein such as 0.1% bovine serum albumin (BSA).

Target Information

Type I Interferons (IFN-alpha/beta) are produced primarily in response to viral infection by Natural IFN-producing cells (IPCs) as part of the host immune response. IFNs can also inhibit the development of tumors. IFN-beta binding results in the activation of the tyrosine kinases Jak1 and Tyk2, phosphorylation of members of the STAT family of transcription factors, and the transcription and expression of the immune response genes. More recently, several members of the toll-like receptor (TLR) family were found to stimulate the production IFN-beta. IFN-beta is currently used clinically for treatment of tumors, infections and multiple sclerosis.

For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.