CD3D-CD3E Heterodimer Protein, Rhesus Macaque (HEK293, hFc)

The CD3D protein is an important component of the TCR-CD3 complex on T lymphocytes and is critical for adaptive immune responses. After APC activates TCR, CD3D, together with CD3E, CD3G and CD3Z, transmits signals through ITAM and activates downstream pathways. CD3D-CD3E Heterodimer Protein, Rhesus Macaque (HEK293, hFc) is a recombinant protein dimer complex containing Rhesus Macaque-derived CD3D-CD3E Heterodimer protein, expressed by HEK293 , with N-hFc.

The CD3D protein is a crucial component of the TCR-CD3 complex found on the surface of T-lymphocytes, playing a pivotal role in adaptive immune responses. Upon activation of the T-cell receptor (TCR) by antigen-presenting cells (APCs), CD3D, along with CD3E, CD3G, and CD3Z, transmits TCR-mediated signals across the cell membrane. These CD3 chains contain immunoreceptor tyrosine-based activation motifs (ITAMs) in their cytoplasmic domain, which, upon phosphorylation by LCK and FYN kinases, activate downstream signaling pathways. Beyond its role in signal transduction for T-cell activation, CD3D is indispensable in thymocyte differentiation, contributing to proper intracellular TCR-CD3 complex assembly and surface expression. Dysfunction in the TCR-CD3 complex leads to impaired thymocyte differentiation. CD3D further interacts with CD4 and CD8, establishing a functional link between the TCR and coreceptors CD4 and CD8, crucial for the activation and positive selection of CD4 or CD8 T-cells. The TCR-CD3 complex consists of CD3D/CD3E and CD3G/CD3E heterodimers, forming trimers that associate with TCRalpha and TCRbeta. Additionally, the hexamer interacts with CD3Z homodimer to complete the TCR-CD3 complex, wherein TCRalpha and TCRbeta can be replaced by TCRgamma and TCRdelta. This intricate interaction network highlights the multifaceted role of CD3D in orchestrating T-cell responses.

Immobilized Rhesus Macaque CD3D-CD3E at 2 μg/mL (100 μL/well) can bind CD3 epsilonAntibody. The ED₅₀ for this effect is 10.45 ng/mL.

• 
  Immobilized Rhesus Macaque CD3D-CD3E at 2 μg/mL (100 μL/well) can bind CD3 epsilonAntibody. The ED₅₀ for this effect is 10.45 ng/mL.

Rhesus Macaque

HEK293

N-hFc

F6WI60 (F22-A105)&G7NCB9 (Q22-D117)

699582  [NCBI]&699467  [NCBI]

Approximately 43-45 kDa&52-60 kDa

• 
  ≥ 95%, as determined by reducing SDS-PAGE.

Lyophilized powder.

Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.