Recombinant Human TNFSF4 protein, C-Fc Tag
Product Description
Cat
IMP-057
Official Symbol
TNFSF4
Product Overview
Human OX40, His Tag (OX0-H5224) is expressed from human 293 cells (HEK293). It contains AA Leu 29-Ala 216 (Accession # P43489-1). This protein carries a polyhistidine tag at the C-terminus.
Expression System
HEK293
Species
Human
Tag
C-His Tag
Form
Lyophilized from sterile PBS, pH7.4, 10% trehalose.
Molecular Mass
This protein carries a polyhistidine tag at the C-terminus. The protein has a calculated MW of 22.0 kDa. The protein migrates as 40-45 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
Protein length
Leu 29-Ala 216
Endotoxin
Less than 1.0 EU per ug by the LAL method.
Purity
>90% as determined by SDS-PAGE.
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.
Reconstitution
It is recommended that sterile water be added to the vial to prepare a stock solution of 0.2 mg/ml. Centrifuge the vial at 4ºC before opening to recover the entire contents.
SDS-PAGE
SDS-PAGE

Human OX40 Protein, His Tag (MALS verified) on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 90%.

SEC-MALS 1
SEC-MALS

The purity of Human OX40, His tag (MALS verified) was more than 85% and the molecular weight of this protein is around 32-44 kDa verified by SEC-MALS.

Bioactivity-ELISA 1
Bioactivity-ELISA

Immobilized Human OX40, His Tag at 2 ug/mL (100 uL/well) can bind Human OX40 Ligand, Fc Tag with a linear range of 0.1-3 ng/mL.

Bioactivity-ELISA 2
Bioactivity-ELISA

Immobilized Human OX40, His Tag at 2 ug/mL (100 uL/well) can bind Monoclonal Anti-Human OX40 Antibody, Human IgG1 with a linear range of 0.1-2 ng/mL.

Bioactivity-ELISA 3
Bioactivity-ELISA

Quantitative Analysis of CTLA-4 x OX40 Bispecific Antibody in Human Serum by Intact Assay. Immobilized Human OX40 Protein, His Tag (MALS verified) at 2 ug/mL, add increasing concentrations of CTLA-4 x OX40 bispecific antibody in 50% Human serum and then add Biotinylated Human CTLA-4, Fc,Avitag at 0.2 ug/mL. Detection was performed using HRP-conjugated streptavidin with sensitivity of 4 ng/mL (Intact assay, Routinely tested).

Bioactivity-BLI 1

Loaded Human OX40 Ligand, His Tag (active trimer) on AR2G Biosensor, can bind Human OX40, His Tag with an affinity constant of 0.15 uM as determined in BLI assay (ForteBio Octet Red96e).

Bioactivity-BLI 2
Bioactivity-BLI

Loaded Anti-OX40 MAb(Human IgG1) on AHC Biosensor, can bind Human OX40, His Tag with an affinity constant of 6.03 nM as determined in BLI assay (ForteBio Octet Red96e).

Data Sheet MSDS
For Research Use Only. Not intended for any clinical use. No products from Creative BioMart may be resold, modified for resale or used to manufacture commercial products without prior written approval from Creative BioMart.

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