膜杰作
Star Staining
分子别名（Synonym）
TNFRSF4,OX40,CD134,OX40L receptor,ACT35,TXGP1L
表达区间及表达系统（Source）
Biotinylated Human OX40, Fc,Avitag (OX0-H82F7) is expressed from human 293 cells (HEK293). It contains AA Leu 29 - Ala 216 (Accession # NP_003318).
Predicted N-terminus: Leu 29
Request for sequence
蛋白结构（Molecular Characterization）
This protein carries a human IgG1 Fc tag at the C-terminus, followed by an Avi tag (Avitag™)
The protein has a calculated MW of 48.6 kDa. The protein migrates as 64-67kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
标记（Labeling）
Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
蛋白标记度（Protein Ratio）
Passed as determined by the HABA assay / binding ELISA.
内毒素（Endotoxin）
Less than 1.0 EU per μg by the LAL method.
纯度（Purity）
>95% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.
制剂（Formulation）
Lyophilized from 0.22 μm filtered solution in 50 mM Tris,100 mM Glycine,25 mM Arginine,10 mM NaCl,pH7.5 with trehalose as protectant.
Contact us for customized product form or formulation.
重构方法（Reconstitution）
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
存储（Storage）
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
电泳（SDS-PAGE）
Biotinylated Human OX40, Fc,Avitag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95% (With Star Ribbon Pre-stained Protein Marker).
SEC-MALS
The purity of Biotinylated Human OX40, Fc,Avitag (Cat. No. OX0-H82F7) is more than 90% and the molecular weight of this protein is around 120-140 kDa verified by SEC-MALS.
Report
活性（Bioactivity）-ELISA
Immobilized Human OX40 Ligand, Fc Tag (Cat. No. OXL-H526x) at 5 μg/mL (100 μL/well) can bind Biotinylated Human OX40, Fc,Avitag (Cat. No. OX0-H82F7) with a linear range of 1-20 ng/mL (QC tested).
Protocol
活性（Bioactivity）-FACS
FACS assay shows that recombinant Biotinylated Human OX40, Fc,Avitag (Cat. No. OX0-H82F7) can bind to 293T cell overexpressing human OX40L. The concentration of OX40 is 0.1 μg/mL (Routinely tested).
Protocol
背景（Background）
Tumor necrosis factor receptor superfamily member 4 (TNFRSF4) is also known as ACT35 antigen, OX40L receptor, TAX transcriptionally-activated glycoprotein 1 receptor, CD antigen CD134, OX40. OX40 / TNFRSF4 contains four TNFR-Cys repeats. TNFRSF4 is receptor for TNFSF4 / OX40L / GP34 and can interacts with TRAF2, TRAF3 and TRAF5.
