Description
Product Name: | Vaccinia Virus B18R / B19R Recombinant Protein (His Tag) |
Product Code: | RPES7006 |
Size: | 100µg |
Species: | Vaccinia Virus |
Expression Host: | Baculovirus-Insect Cells |
Mol Mass: | 39.8KDa |
AP Mol Mass: | 46 kDa |
Tag: | C-His |
Purity: | > 90 % as determined by reducing SDS-PAGE. |
Endotoxin Level: | < 1.0 EU per μg of the protein as determined by the LAL method. |
Bio Activity: | Testing in progress |
Sequence: | Met1-Glu351 |
Accession: | P25213 |
Storage: | Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months. |
Shipping: | This product is provided as lyophilized powder which is shipped with ice packs. |
Formulation: | Lyophilized from sterile PBS, pH 7.4. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
Reconstitution: | Please refer to the printed manual for detailed information. |
Background: | B18R is a type I interferon (IFN)-binding protein, which is encoded by the B18R open reading frame in the WR (WesternReserve)strain of vaccinia virus. Itis alsoknownasB19RintheCopenhagenstrainofVaccinia. B18R exists in a soluble and a membrane-bound form. As a type I IFN receptor, B18R has a broad species specificity. It has high affinity for human IFN-alpha and also binds rabbit, bovine, rat, pig, and mouse IFN-alpha and IFN-beta. It has been shown that secreted B18R binds to uninfected and infected cells. It presents at the cell surface and protects cells from the antiviral state induced by IFN-alpha and IFN-beta. Binding of soluble recombinant B18R protects cultured cells from IFN and allows vaccinia virus replication. |