T-cell surface glycoprotein CD3 epsilon chain, also known as CD3e, T3e, TCRe and IMD18, is a single-pass type I transmembrane protein. CD3E contains 1 Ig-like (immunoglobulin-like) domain in the extracellular region and 1 cytoplasmic ITAM (immune tyrosine activation motif) domain. CD3e, together with CD3-gamma, CD3-delta and CD3-zeta, and the T-cell receptor (TCR) alpha/beta and gamma/delta heterodimers, forms the TCR-CD3 complex. This complex plays an important role in coupling antigen recognition to several intracellular signal-transduction pathways leading to the activation of T cells. CD3e plays an essential role in T-cell development. In CD3e-deficient mice, all stages of T cell development and activation that are TCR-dependent were impaired, but not eliminated. Mutations in the CD3e gene are associated with immunodeficiency 18 (IMD18), an autosomal recessive primary immunodeficiency characterized by onset in infancy or early childhood. The CD3e gene has also been linked to a susceptibility to type I diabetes in women.

T-cell surface glycoprotein CD3 epsilon chain, also known as CD3e, T3e, TCRe and IMD18, is a single-pass type I transmembrane protein. CD3E contains 1 Ig-like (immunoglobulin-like) domain in the extracellular region and 1 cytoplasmic ITAM (immune tyrosine activation motif) domain. CD3e, together with CD3-gamma, CD3-delta and CD3-zeta, and the T-cell receptor (TCR) alpha/beta and gamma/delta heterodimers, forms the TCR-CD3 complex. This complex plays an important role in coupling antigen recognition to several intracellular signal-transduction pathways leading to the activation of T cells. CD3e plays an essential role in T-cell development. In CD3e-deficient mice, all stages of T cell development and activation that are TCR-dependent were impaired, but not eliminated. Mutations in the CD3e gene are associated with immunodeficiency 18 (IMD18), an autosomal recessive primary immunodeficiency characterized by onset in infancy or early childhood. The CD3e gene has also been linked to a susceptibility to type I diabetes in women.

 

Product Details

 

Gene Symbol: CD3E; T3E; TCRE; IMD18; Leu-4

 

NCBI Gene ID: 916

 

Uniprot Entry: P07766

 

Construct Details: The recombinant human CD3e-Fc fusion is expressed as a 333 amino acid protein consisting of Asp23 - Val127 region of CD3e (UniProt accession #P07766)  and a C-terminal Fc from human IgG1, which exists as a dimer under non-reducing conditions.  

 

Source:  Human cells stably expressing CD3e-Fc growing in chemical-defined media with no animal components or antibiotics 

 

Deduced Amino Acid Sequence:

        10         20         30         40         50         60 

DGNEEMGGIT QTPYKVSISG TTVILTCPQY PGSEILWQHN DKNIGGDEDD KNIGSDEDHL 

        70         80         90        100        110        120 

SLKEFSELEQ SGYYVCYPRG SKPEDANFYL YLRARVCENC MEMDVSTGTH TCPPCPAPEL 

       130        140        150        160        170        180 

LGGPSVFLFP PKPKDTLMIS RTPEVTCVVV DVSHEDPEVK FNWYVDGVEV HNAKTKPREE 

       190        200        210        220        230        240 

QYNSTYRVVS VLTVLHQDWL NGKEYKCKVS NKALPAPIEK TISKAKGQPR EPQVYTLPPS 

       250        260        270        280        290        300 

REEMTKNQVS LTCLVKGFYP SDIAVEWESN GQPENNYKTT PPVLDSDGSF FLYSKLTVDK 

       310        320        330 

SRWQQGNVFS CSVMHEALHN HYTQKSLSLS PGK 

 

M.W.: Calculated molecular mass (kDa): 37.4; Estimated by SDS-PAGE under reducing condition (kDa): ~45

 

Calculated PI:  5.28 

 

Calculated Extinction Coefficient (M^-1 cm^-1, at 280nm):  51965

 

Purity: >95% judged by SDS-PAGE under reducing condition (see the gel image above, labeled as DTT "+")

 

Formulation: Supplied at 0.5 mg/ml in sterile PBS pH7.4 (carrier and preservative free). The purified recombinant protein was labeled with Biotin (3-5 Biotin per molecule) using the standard procedure.

 

Endotoxin Level: <0.1 EU per 1 μg of purified recombinant protein determined by the LAL method

 

Biological Activity: Recognized by recombinant anti-CD3e monoclonal antibodies: human IgG1 (SKU#MAB0818), mouse IgG1 (SKU#MAB1899), mouse IgG2a (SKU#MAB1898) and  rabbit IgG (SKU#MAB1897).

 

 

 

 

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

Restriction: This product is not transferable or re-sellable.  Customer obtain no right to transfer, assign, or sublicense its use rights, or to transfer, resell, package, or otherwise distribute the product, or to use the product for the benefit of any third party or for any commercial purpose.  Customer may only use the product in compliance with applicable local, state and federal laws, regulations and rules.  Customer may not directly or indirectly use the product or allow the transfer, transmission, export or re-export of all or any part of the product in violation of any export control law or regulation of the united states or any other relevant jurisdiction.  Your use of this product constitutes acceptance of the terms of this limited use agreement.  Please refer to our “terms & conditions” for details.  If you are not willing to accept the limitation of this agreement, G&P Biosciences will accept return of the product for a full/partial refund.

 

Storage

 

The product is shipped at 4°C. Upon receipt, centrifuge the product briefly before opening the vial. It is recommended to store small aliquots at the temperature below –20°C for long-term storage and the product is stable for 3 months. The undiluted protein can be stored at 4°C for no more than 2 weeks.

 

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

 

 

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

 

References

 

1. Nature 321:431 (1986).

2. Nat. Genet. 3:77 (1993).

3. J. Clin. Invest. 114:1512 (2004).

4. Proc. Natl. Acad. Sci. 101:7675 (2004).

5. J Immunol. 183: 1055 (2009).

 

 

Documentation

 

Product datasheet (pdf) can be downloaded here: FCL1016B-PDS.pdf

 

 

 

Additional supporting documents, including COA and MSDS are available upon request.

 

 

 

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

Restriction: This product is not transferable or re-sellable.  Customer obtain no right to transfer, assign, or sublicense its use rights, or to transfer, resell, package, or otherwise distribute the product, or to use the product for the benefit of any third party or for any commercial purpose.  Customer may only use the product in compliance with applicable local, state and federal laws, regulations and rules.  Customer may not directly or indirectly use the product or allow the transfer, transmission, export or re-export of all or any part of the product in violation of any export control law or regulation of the united states or any other relevant jurisdiction.  Your use of this product constitutes acceptance of the terms of this limited use agreement.  Please refer to our “terms & conditions” for details.  If you are not willing to accept the limitation of this agreement, G&P Biosciences will accept return of the product for a full/partial refund.