Mouse Cd81 Antigen, CD81 ELISA Kit
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Structural component of specialized membrane microdomains known as tetraspanin-enriched microdomains (TERMs), which act as platforms for receptor clustering and signaling. Essential for trafficking and compartmentalization of CD19 receptor on the cell surface of activated B cells (PubMed:23499492). Upon initial encounter with a microbial pathogen, enables the assembly of CD19-CR2 and B cell receptor complexes at signaling TERMs, lowering the threshold dose of antigen required to trigger B cell clonal expansion and humoral immune response (By similarity). In T cells, associates with CD4 or CD8 coreceptors and defines the maturation state of antigen-induced synapses with B cells (By similarity). Facilitates localization of CD3 in these immune synapses, required for costimulation and sustained activation of T cells, preferentially triggering T helper type 2 immune response (PubMed:11046035). Can act both as positive and negative regulator of homotypic or heterotypic cell-cell fusion processes. In myoblasts, associates with another tetraspanin CD9 in complex with PTGFRN and inhibits myotube fusion during muscle regeneration (PubMed:23575678). In macrophages, associates with CD9 and beta-1 and beta-2 integrins, and prevents macrophage fusion into multinucleated giant cells specialized in ingesting complement-opsonized large particles. Also prevents the fusion between mononuclear cell progenitors into osteoclasts in charge of bone resorption. Positively regulates sperm-egg fusion and may be involved in the acrosome reaction (PubMed:16380109, PubMed:17290409). Regulates protein trafficking in intracellular compartments. In T cells, associates with dNTPase SAMHD1 and defines its subcellular location, enabling its degradation by the proteasome and thereby controlling intracellular dNTP levels (By similarity). Also regulates integrin-dependent migration of macrophages, particularly relevant for inflammatory response in the lung (PubMed:18662991). (Microbial infection) Specifically required for Plasmodium yoelii infectivity of hepatocytes, controlling sporozoite entry in hepatocytes via the parasitophorous vacuole and subsequent parasite differentiation to exoerythrocytic forms.
Fully tested in-house by ABMIUM, or supported by an advanced validation report from a partner reviewed by ABMIUM. Highest confidence. Non-conformities fully supported under the ABMIUM Product Promise.
Quality verified. Independent collaborator or expected-performance data available. Product meets ABMIUM quality standards.
Expected to work based on structural and biochemical data. Not yet directly tested by ABMIUM or a collaborator. No non-conformity support for this combination.
Not recommended for this application or species/sample combination. This may indicate either evidence of unsuitability or that the combination has not been tested and therefore cannot currently be recommended.
Evidence status by application and model.
| Evidence | Serum | Plasma | Cell culture supernatants | Ascites | Tissue homogenates |
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This product is manufactured by BT LAB and sold through ABMIUM without relabelling.
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CD81 identifies CD81 molecule in Homo sapiens (Human). This target record connects NCBI Gene 975, UniProtKB P60033 and related ABMIUM catalogue products.
