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  2. CD Antigens Biotinylated Proteins
  3. T Cell CD Proteins
  4. CD3D-CD3E Heterodimer Proteins
  5. CD3D-CD3E Heterodimer Protein, Human (Biotinylated, HEK293, His)

CD3D-CD3E Heterodimer Protein, Human (Biotinylated, HEK293, His)

Cat. No.: HY-P700677
Handling Instructions

CD3 epsilon, a crucial part of the TCR-CD3 complex on T-lymphocytes, facilitates TCR-mediated signal transmission. When APCs activate TCR, CD3 epsilon, with CD3D, CD3G, and CD3Z, relays signals across the cell membrane via ITAMs. LCK and FYN phosphorylate CD3 epsilon upon TCR engagement, initiating downstream signaling. Essential for T-cell development, CD3 epsilon forms heterodimers, initiating TCR-CD3 complex assembly. It's vital for TCR-CD3 complex internalization and down-regulation, interacting with CD6, NCK1, and NUMB, underscoring its pivotal role in T-cell processes. CD3E-CD3D Heterodimer Protein, Human (Biotinylated, HEK293, His) is a recombinant protein dimer complex containing human-derived CD3E-CD3D Heterodimer protein, expressed by HEK293, with C-His labeled tag. CD3E-CD3D Heterodimer Protein, Human (Biotinylated, HEK293, His), has molecular weight of 25-40 kDa.

For research use only. We do not sell to patients.

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Description

CD3 epsilon, a crucial part of the TCR-CD3 complex on T-lymphocytes, facilitates TCR-mediated signal transmission. When APCs activate TCR, CD3 epsilon, with CD3D, CD3G, and CD3Z, relays signals across the cell membrane via ITAMs. LCK and FYN phosphorylate CD3 epsilon upon TCR engagement, initiating downstream signaling. Essential for T-cell development, CD3 epsilon forms heterodimers, initiating TCR-CD3 complex assembly. It's vital for TCR-CD3 complex internalization and down-regulation, interacting with CD6, NCK1, and NUMB, underscoring its pivotal role in T-cell processes. CD3E-CD3D Heterodimer Protein, Human (Biotinylated, HEK293, His) is a recombinant protein dimer complex containing human-derived CD3E-CD3D Heterodimer protein, expressed by HEK293, with C-His labeled tag. CD3E-CD3D Heterodimer Protein, Human (Biotinylated, HEK293, His), has molecular weight of 25-40 kDa.

Background

CD3 epsilon, an integral component of the TCR-CD3 complex on the surface of T-lymphocytes, plays a crucial role in the adaptive immune response. As antigen-presenting cells (APCs) activate the T-cell receptor (TCR), CD3 epsilon, along with other CD3 chains (CD3D, CD3G, and CD3Z), facilitates the transmission of TCR-mediated signals across the cell membrane. Containing immunoreceptor tyrosine-based activation motifs (ITAMs) in its cytoplasmic domain, CD3 epsilon undergoes phosphorylation by Src family protein tyrosine kinases LCK and FYN upon TCR engagement, leading to the activation of downstream signaling pathways. Beyond its role in signal transduction, CD3 epsilon is essential for proper T-cell development, initiating the assembly of the TCR-CD3 complex by forming the heterodimers CD3D/CD3E and CD3G/CD3E. Additionally, CD3 epsilon is involved in the internalization and cell surface down-regulation of TCR-CD3 complexes through endocytosis sequences present in its cytosolic region. The TCR-CD3 complex comprises CD3D/CD3E and CD3G/CD3E heterodimers, which preferentially associate with TCRalpha and TCRbeta, forming trimers that interact with CD3Z homodimers to complete the hexameric TCR-CD3 complex. Alternatively, TCRgamma and TCRdelta can replace TCRalpha and TCRbeta. CD3 epsilon's interactions with CD6, NCK1, and NUMB further highlight its pivotal role in orchestrating T-cell activation, development, and internalization processes.

Species

Human

Source

HEK293

Tag

C-His

Accession

P04234 (F22-A105)&P07766 (D23-E120)

Gene ID

915&916

Synonyms
CD3; CD3e; CD3E; CD3d; T3D; CD3D; CD3E&CD3D; CD3 delta&CD3 epsilon
Molecular Weight

25-40 kDa

Purity

Greater than 95% as determined by reducing SDS-PAGE.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Documentation

CD3D-CD3E Heterodimer Protein, Human (Biotinylated, HEK293, His) Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
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The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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CD3D-CD3E Heterodimer Protein, Human (Biotinylated, HEK293, His)
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HY-P700677
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