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分子别名（Synonym）
OX40L, TNFSF4, CD252, Glycoprotein Gp34, TXGP1, CD134 ligand, CD134L
表达区间及表达系统（Source）
Human OX40 Ligand Protein, Mouse IgG2a Fc Tag (OXL-H5250) is expressed from human 293 cells (HEK293). It contains AA Gln 51 - Leu 183 (Accession # P23510-1).
Predicted N-terminus: Gln 51
Request for sequence蛋白结构（Molecular Characterization）
This protein carries a mouse IgG2a Fc tag at the C-terminus.
The protein has a calculated MW of 42.3 kDa. The protein migrates as 53-60 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
内毒素（Endotoxin）
Less than 0.01 EU per μg by the LAL method / rFC method.
纯度（Purity）
>95% as determined by SDS-PAGE.
制剂（Formulation）
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 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.
质量管理控制体系（QMS）
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数据展示
电泳（SDS-PAGE）
Human OX40 Ligand Protein, Mouse IgG2a Fc Tag 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).
活性（Bioactivity）-ELISA
Immobilized Human OX40, Fc Tag (Cat. No. OX0-H5255) at 0.5 μg/mL (100 μL/well) can bind Human OX40 Ligand Protein, Mouse IgG2a Fc Tag (Cat. No. OXL-H5250) with a linear range of 0.8-13 ng/mL (QC tested).
Protocol
活性（Bioactivity）-BLI
Loaded Human OX40 Ligand Protein, Mouse IgG2a Fc Tag (Cat. No. OXL-H5250) on Protein A Biosensor, can bind Human OX40, His Tag (Cat. No. OX0-H5224) with an affinity constant of 2 μM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Protocol
活性（Bioactivity）-FACS
FACS assay shows that recombinant Human OX40 Ligand, Mouse IgG2a Fc Tag, low endotoxin (Cat. No. OXL-H5250) can bind to 293T cell overexpressing human OX40. The concentration of OX40 Ligand is 0.003 μg/ml (Routinely tested).
Protocol
FACS analysis shows that the binding of Human OX40 Ligand, Mouse IgG2a Fc Tag, low endotoxin (Cat. No. OXL-H5250) to 293T overexpressing OX40 was inhibited by increasing concentration of neutralizing anti-OX40 antibody. The concentration of OX40 Ligand used is 0.002 μg/ml. IC50=3.021 μg/ml (Routinely tested).
Protocol
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