Recombinant Human CD3 epsilon Protein, His Tag & Fc Tag, 100 µg

Background
CD3e molecule, epsilon is also known as CD3E, is a T-cell surface single-pass type I membrane glycoprotein. CD3E contains 1 Ig-like (immunoglobulin-like) domain and 1 ITAM domain. CD3E, together with CD3-gamma, CD3-delta and CD3-zeta, and the T-cell receptor alpha/beta and gamma/delta heterodimers, forms the T cell receptor-CD3 complex. This complex plays an important role in coupling antigen recognition to several intracellular signal-transduction pathways. The genes encoding the epsilon, gamma and delta polypeptides are located in the same cluster on chromosome 11. The epsilon polypeptide plays an essential role in T-cell development. CD3E plays an essential role in T-cell development, and defects in CD3E gene cause severe immunodeficiency. CD3E gene has also been linked to a susceptibility to type I diabetes in women. CD3E has been shown to interact with TOP2B, CD3EAP and NCK2.

Source
Recombinant Human CD3 epsilon, Fc,His Tag (CDE-H5256) is expressed from human 293 cells (HEK293). It contains AA Asp 23 - Asp 126 (Accession # NP_000724.1).
Predicted N-terminus: Asp 23.

Molecular Characterization
This protein carries a human IgG1 Fc tag at the C-terminus, followed by a polyhistidine tag.
The protein has a calculated MW of 39.2 kDa. The protein migrates as 45-55 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Endotoxin
Less than 1.0 EU per μg of the rh CD3E Fc Chimera by the LAL method.

Purity
>95% as determined by SDS-PAGE.

Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.

Reconstitution
See Certificate of Analysis for details of reconstitution instruction and specific concentration.

Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
-20°C to -70°C for 12 months in lyophilized state;
-70^°C for 3 months under sterile conditions after reconstitution.

Bioactivity
Please refer to product data sheet.

Clinical and Translational Updates

(1) "Injection Effect of Anti-CD3 Monoclonal Antibody on Primo Vessel in Lymph Vessel of Rabbit with Lipopolysaccharide-Induced Inflammation"
Choi, Choi, Lee
J Acupunct Meridian Stud (2022) 15 (1), 37-42
(2) "Comparison of CD3e Antibody and CD3e-sZAP Immunotoxin Treatment in Mice Identifies sZAP as the Main Driver of Vascular Leakage"
Kim, Shukla, Kim et al
Biomedicines (2022) 10 (6)
(3) "Murine RAW Macrophages Are a Suitable Model to Study the CD3 Signaling in Myeloid Cells"
Ocaña-Guzmán, Ramón-Luing, Rodríguez-Alvarado et al
Cells (2022) 11 (10)
Showing 1-3 of 859 papers.