Recombinant Human OX40/TNFRSF4 protein (His tag)

Specifications

Catalog number

PDMH100424-01

Size / count

20 µg

Dry ice

No

Hazardous

No

Discontinued

No

Background

OX40, also termed CD134 and TNFRSF4, is a T cell co-stimulatory molecule of the TNF receptor superfamily which plays a key role in the survival and homeostasis of effector and memory T cells. OX40 is expressed on CD4+ and CD8+ T cells upon engagement of the TCR by antigen presenting cells along with co-stimulation by CD40-CD40 Ligand and CD28-B7. The interaction between OX40 and OX40 ligand (OX40L) will occur when activated T cells bind to professional antigen-presenting cells (APCs) . The T-cell functions, including cytokine production, expansion, and survival, are then enhanced by the OX40 costimulatory signals. OX40 signals are critical for controlling the function and differentiation of Foxp3+ regulatory T cells. OX40-OX40L interaction regulates T-cell tolerance, peripheral T-cell homeostasis, and T-cell-mediated inflammatory diseases.

Abbreviation

OX40; TNFRSF4

Synonyms

ACT35; CD134; IMD16; OX40; TNFRSF4; TXGP1L; Tumor necrosis factor receptor superfamily member 4; Txgp1

UniProt

P43489

Accession Number

P43489

Expression System

HEK293 Cells

Tag

C-His

Sequence

Met1-Ala216

Field of Research

Immunology; Stem cells

Endotoxin

< 1.0 EU/mg of the protein as determined by the LAL method.

Purity

> 95% as determined by reducing SDS-PAGE.

Bioactivity

Not validated for activity

Reconstitution

It is recommended that sterile water be added to the vial to prepare a stock solution of 0.5 mg/mL. Concentration is measured by UV-Vis.

Shipping Conditions

This product is provided as lyophilized powder which is shipped with ice packs.

Storage Conditions

Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.

Calculated Molecular Weight

23.7 kDa

Observed Molecular Weight

60 kDa

Species

Human