Key Product Details
Assay Type
Solid Phase Sandwich ELISA
Assay Range
156-10000 pg/mL
Sample Type
Cell culture supernates, serum, and plasma
Note: Diluents for complex matrices, such as serum and plasma, should be evaluated prior to use in this DuoSet
Human CRTAM DuoSet ELISA Features
- Optimized capture and detection antibody pairings with recommended concentrations save lengthy development time
- Development protocols are provided to guide further assay optimization
- Assay can be customized to your specific needs
- Economical alternative to complete kits
Other Reagents Required
DuoSet Ancillary Reagent Kit 2 (5 plates): (Catalog # DY008C) containing 96 well microplates, plate sealers, substrate solution, stop solution, plate coating buffer (PBS), wash buffer, and Reagent Diluent Concentrate 2.
PBS: (Catalog # DY006), or 137 mM NaCl, 2.7 mM KCl, 8.1 mM Na2HPO4, 1.5 mM KH2PO4, pH 7.2 - 7.4, 0.2 µm filtered
Wash Buffer: (Catalog # WA126), or equivalent
Reagent Diluent*
Blocking Buffer*
Substrate Solution: ELISA TMB Substrate (Catalog # DY999B or DY999B-250)
Stop Solution: Methanesulfonic acid (Catalog # DY994B or DY994B-250)
Microplates: (Catalog # DY990), or equivalent
Plate Sealers: (Catalog # DY992), or equivalent
*For the recommended Reagent Diluent and Blocking Buffer for a specific DuoSet ELISA Development Kit, refer to the product datasheet.
Background: CRTAM
CRTAM (Class I-restricted T cell-associated molecule) is a nectin family member of the immunoglobulin superfamily that is expressed by activated CD8+ and NK T cells. NK activation receptor engagement, but not cytokines, also induce NK CRTAM expression. CRTAM is found in spleen, thymus, small intestine, peripheral blood, and in brain where it is highly expressed by Purkinje cells of the cerebellum.
Human CRTAM is a 393 amino acid (aa), 80 kDa type I transmembrane glycoprotein. CRTAM is a homodimer on the cell surface but does not show homotypic binding in trans. The high affinity of CRTAM/IGSF4 adhesion allows CRTAM to disrupt IGSF4 homotypic interactions. IGSF4 and T cell receptor co-engagement of CRTAM-expressing CD8+ cells induces increased IFN-gamma or IL-22 production. A role in cancer surveillance through NK cell-mediated rejection of IGSF4-expressing tumors has been proposed. IGSF4 is expressed broadly, including on epithelia, neurons, a subset of tonsillar B cells and a rare splenic T zone-restricted BCDA3+ dendritic cell population which interacts with CRTAM.
Long Name
Class I-restricted T-cell-associated Molecule, Nectin
Additional CRTAM Products
