Name : Human BST2 Protein

Product Source :
Recombinant Human BST2 Protein is expressed from HEK293 with hFc tag at the N-Terminus. It contains Asn49-Ser161.[Accession | Q10589-1]

Molecular Weight :
The protein has a predicted MW of 40 kDa. Due to glycosylation, the protein migrates to 50-60 kDa based on Tris-Bis PAGE result.

Endotoxin Level :
Less than 1EU per μg by the LAL method.

Purity :
> 95% as determined by Tris-Bis PAGE> 95% as determined by HPLC

Formulation :
Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.

Reconstitution :
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.

Storage and Stability :
-20 to -80°C for 12 months as supplied from date of receipt.-80°C for 3-6 months after reconstitution.2-8°C for 2-7 days after reconstitution.Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.

Product Concentration :
Tris-Bis PAGE Human BST2 on Tris-Bis PAGE under reduced condition. The purity is greater than 95%. SEC-HPLC The purity of Human BST2 is greater than 95% as determined by SEC-HPLC. ELISA Data Immobilized Human BST2, hFc Tag at 0.5μg/ml (100μl/well) on the plate. Dose response curve for Biotinylated Anti-BST2 Antibody, hFc Tag with the EC50 of 0.12μg/ml determined by ELISA. determined by ELISA.

Background :
Interferon-induced BST2 (bone marrow stromal cell antigen 2) inhibits viral replication by tethering enveloped virions to the cell surface to restrict viral release and by inducing the NFKB-dependent antiviral immune response. BST2 expression was significantly increased during porcine epidemic diarrhea virus (PEDV) infection of Vero cells by IRF1 targeting its promoter. Both the BST2 and N protein interacted with the E3 ubiquitin ligase MARCHF8/MARCH8 and the cargo receptor.

Synonyms :
BST-2; HM1.24 antigen; CD317; BST2; NPC-A-7; PDCA-1; TETHERIN

References & Citations :
(1) Kong N, Shan T, Wang H, Jiao Y, Zuo Y, Li L, Tong W, Yu L, Jiang Y, Zhou Y, Li G, Gao F, Yu H, Zheng H, Tong G. BST2 suppresses porcine epidemic diarrhea virus replication by targeting and degrading virus nucleocapsid protein with selective autophagy. Autophagy. 2020 Oct;16(10):1737-1752. doi: 10.1080/15548627.2019.1707487. Epub 2019 Dec 27. PMID: 31868081.

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