Biotin Rat anti-Mouse CD3 Monoclonal Antibody for FC - P04235 / P22646

Core Product Specifications and Parameters

Biological Background: CD3 Delta and Epsilon Chain Function and Localization

• CD3 delta (P04235) and epsilon (P22646) are essential subunits of the T-cell receptor (TCR)-CD3 complex on T lymphocytes, playing a central role in adaptive immunity by transducing activation signals upon antigen recognition.
• The cytoplasmic domains of CD3 chains contain immunoreceptor tyrosine-based activation motifs (ITAMs) that become phosphorylated by Src family kinases LCK and FYN upon TCR engagement, initiating downstream signaling cascades.
• CD3 delta is critical for thymocyte differentiation: it facilitates proper intracellular assembly and surface expression of the TCR-CD3 complex, and its absence disrupts T-cell development (PubMed:10935641). Related references: PMID:10935641
• CD3 delta interacts with CD4 and CD8 coreceptors, thereby establishing a functional link between the TCR and these coreceptors, which is required for activation and positive selection of CD4+ or CD8+ T cells.
• Both CD3 delta and epsilon are single-pass type I membrane proteins with extracellular, transmembrane, and cytoplasmic regions; they are expressed on the plasma membrane of thymocytes and mature T cells.
• These proteins are post-translationally modified by glycosylation and phosphorylation, and contain conserved disulfide bonds that stabilize their structure.

Experimental Guidance and Technical Tips

• When performing flow cytometry, titrate the biotinylated antibody over a range (e.g., 0.1–5 µg/mL) to determine the optimal staining concentration for your cell population.
• Use a suitable avidin/streptavidin-fluorophore conjugate for detection, and include an isotype-matched biotin-Rat IgG control to assess non-specific binding.
• For surface staining of live mouse T cells, consider a brief blocking step with an Fc receptor blocker to reduce background, and acquire data promptly after staining to maintain viability.
• Validate the antibody in your specific mouse strain and tissue context, as CD3 expression may vary among T-cell subsets and activation states.

CamelBio: Your One-Stop Sourcing Bridge

This Biotin Rat anti-Mouse CD3 mAb (P04235/P22646) is part of CamelBio’s extensive portfolio of IVD raw materials, enabling T-cell immunology research and diagnostic development. As a one-stop sourcing partner, CamelBio offers validated antibody pairs, optimized monoclonal/polyclonal antibodies, bulk ancillary reagents, and custom rare-target raw-material procurement to streamline your workflow from concept to clinic.