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Recombinant Mouse IFN-alpha 4 Protein, CF

Catalog # 10259-IF | R&D Systems, Inc. a Bio-Techne Brand
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10259-IF-010
10259-IF-050

Key Product Details

Source

HEK293

Accession #

Conjugate

Unconjugated

Applications

Bioactivity

Product Specifications

Source

Human embryonic kidney cell, HEK293-derived mouse IFN-alpha 4 protein
Leu23-Glu186

Purity

>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Leu23

Predicted Molecular Mass

19 kDa

SDS-PAGE

17-25 kDa, under reducing conditions

Activity

Measured in an anti-viral assay using L‑929 mouse fibroblast cells infected with encephalomyocarditis (EMC) virus. Vogel, S.N. et al. (1982) Infect. Immunol. 38:681.
The ED50 for this effect is <60 pg/mL.

Scientific Data Images for Recombinant Mouse IFN-alpha 4 Protein, CF

Recombinant Mouse IFN-alpha 4 Protein Bioactivity

Recombinant Mouse IFN-alpha 4 Protein Bioactivity

Recombinant Mouse IFN-alpha/IFNA4 (Catalog # 10259-IF) suppresses viral activity on L-929 mouse fibroblast cells infected with encephalomyocarditis (EMC) virus. The ED50 for this effect is <60 pg/mL.
Recombinant Mouse IFN-alpha 4 Protein SDS-PAGE

Recombinant Mouse IFN-alpha 4 Protein SDS-PAGE

2 μg/lane of Recombinant Mouse IFN-alpha 4 (Catalog # 10259-IF) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 17-25 kDa.

Formulation, Preparation and Storage

10259-IF
Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 100 μg/mL in PBS.
Shipping The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: IFN-alpha 4

The interferons (IFN) are a family of cytokines with potent antiviral, antiproliferative and immunomodulatory properties, and are classified based on their binding specificity to cell surface receptors (1). The type I IFNs bind to the interferon alpha receptor (IFNAR), which consists of two subunits: IFNAR1 ( alpha-subunit) and IFNAR2 ( beta-subunit). This binding contributes to TNF-alpha induced signaling (2, 3). Both the human and mouse genome code for more than a dozen closely related IFN-alpha subtypes and the various IFN-alphas share about 80% sequence homology among them (4, 5). The mouse IFN-alpha 4 consists of 186 amino acids (aa) including a 24 aa signal peptide and a 162 aa IFN-alpha 4 mature domain. The mature mouse IFN-alpha 4 shares 58% and 76% sequence identity with mature human and rat IFN-alpha 4, respectively. The mouse IFN-alpha 4 reduces the local replication of murine cytomegalovirus in the tibia muscle (6). mIFN-A4 is a strong activator of Mx gene and  was shown to be very effective in reducing splenomegaly (7).

References

  1. Pestka S, et al. (1987) Annu Rev Biochem. 56:727.
  2. Fung, K.Y. et al. (2013) Science 339:1088.
  3. Matsumiya, T. et al. (2007) J. Immunol. 179:4542.
  4. Schreiber, G. and J. Piehler (2015) Trends Immunol. 36:139.
  5. van Pesch, V. et al. (2004) J. Virol. 78:8219.
  6. Yeow, W.S. et al. (1998) J. Immunol. 15:2932.
  7. Gerlach, N. et al. (2009) European J. Immunol. 39:136.

Long Name

Interferon alpha 4

Alternate Names

IFNA4, IFNalpha 4

Entrez Gene IDs

3441 (Human); 15967 (Mouse)

Gene Symbol

IFNA4

UniProt

Product Documents for Recombinant Mouse IFN-alpha 4 Protein, CF

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Mouse IFN-alpha 4 Protein, CF

For research use only

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