Recombinant Vaccinia Virus B18R protein, His-tagged

• Cat.No.: B18R-641V
• Product Overview: Recombinant Vaccinia Virus B18R (His20-Glu351) protein was fused to His-tag at C-terminus and expressed in human 293 cells (HEK293).

Specification

• Species: VACV
• Source: HEK293
• Tag: His
• Protein Length: His20-Glu351
• Description: B18R is a type I interferon (IFN)-binding protein and it is encoded by the B18R open reading frame in the WR (Western Reserve) strain of vaccinia virus, which contains two Ig-like C2-type domains and one Ig-like V-type domain. B18R exists in a soluble and a membrane-bound form. As a type I IFN receptor, B18R counteracts the antiviral effects of host IFN-alpha/beta. Also, B18R acts as a soluble IFN-alpha receptor and thus inhibits the interaction between host IFN-alpha and its receptor.
• Predicted N Terminal: His20
• Form: Lyophilized from 0.22 μm filtered solution in PBS, pH7.4, 10% trehalose.
• Molecular Mass: The protein has a calculated MW of 40.3 kDa. The protein migrates as 50-60 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
• Endotoxin: Less than 1.0 EU per μg by the LAL method.
• Purity: >95% as determined by SDS-PAGE.
• Storage: For long term storage, the product should be stored at lyophilized state at -20 centigrade or lower.
  Please avoid repeated freeze-thaw cycles.
  This product is stable after storage at:
  -20 to -70 centigrade for 12 months in lyophilized state;
  -70 centigrade for 3 months under sterile conditions after reconstitution.
• Reconstitution: It is recommended that sterile water be added to the vial to prepare a stock solution of 0.2 ug/ul. Centrifuge the vial at 4℃ before opening to recover the entire contents.

Gene Information

• Gene Name: B18R
• Official Symbol: B18R
• Synonyms: VACWR200
• Gene ID: 3707576
• Protein Refseq: YP_233081.1
• UniProt ID: P25213