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Synonym
Tumor necrosis factor receptor superfamily member 4;TNFRSF4;OX40;CD134;Txgp1
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Activity
Measured by its binding ability in a functional ELISA. 2. Immobilized human TNFRSF4-his at 2 μg/mL (100 μl/well) can bind human TNFSF4/mFc, The EC50 of human TNFSF4/mFc is 29 ng/mL.
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Sequence
Leu29-Ala216
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Fusion tag
C-6His
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Accession
NP_003318.1
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Expressed Host
Human Cells
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Shipping
The product is shipped at ambient temperature.Upon receipt, store it immediately at the temperature listed below.
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Purity
＞95% as determined by reducing SDS-PAGE.
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Endotoxin
＜1.0 EU per µg as determined by LAL test.
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Stability and Storage
Lyophilized protein should be stored at < -20℃, though stable at room temperature for 3 weeks.Reconstituted protein solution can be stored at 4-7℃ for 2-7 days.Aliquots of reconstituted samples are stable at < -20℃ for 3 months
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Mol Mass
21.0 kDa
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AP Mol Mass
35-40 kDa
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Formulation
Lyophilized from a 0.2 μm filtered solution of PBS, pH7.4.
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Reconstitution
Please refer to it for detailed information.
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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.
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Properties
Human proteins, cDNA and human recombinants are used in human reactive ELISA kits and to produce anti-human mono and polyclonal antibodies. Modern humans (Homo sapiens, primarily ssp. Homo sapiens sapiens). Depending on the epitopes used human ELISA kits can be cross reactive to many other species. Mainly analyzed are human serum, plasma, urine, saliva, human cell culture supernatants and biological samples.
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Description
The receptors are ligand binding factors of type 1, 2 or 3 and protein-molecules that receive chemical-signals from outside a cell. When such chemical-signals couple or bind to a receptor, they cause some form of cellular/tissue-response, e.g. a change in the electrical-activity of a cell. In this sense, am olfactory receptor is a protein-molecule that recognizes and responds to endogenous-chemical signals, chemokinesor cytokines e.g. an acetylcholine-receptor recognizes and responds to its endogenous-ligand, acetylcholine. However, sometimes in pharmacology, the term is also used to include other proteins that are drug-targets, such as enzymes, transporters and ion-channels.
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Source
Recombinants or rec. proteins
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Group
recombinants
