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Biotinylated Human CD3E&CD3G/CD3 epsilon&CD3 gamma Protein

Product Info
Source

Recombinant Biotinylated Human CD3E&CD3G/CD3 epsilon&CD3 gamma Protein is expressed from Expi293 with hFc tag and Avi tag at the C-terminal. It contains Asp23-Asp126(CD3E) & Gln23-Ser116(CD3G).[Accession | P07766&P09693]

Molecular Weight

The protein has a predicted MW of 40 kDa (CD3E) and 36.5 kDa (CD3G). Due to glycosylation, the protein migrates to 48-55 kDa based on Tris-Bis PAGE result.

Endotoxin

Less than 1EU per μg by the LAL method.

Purity

> 95% as determined by Tris-Bis PAGE
> 95% as determined by SEC-HPLC

Formulation

Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 5 % trehalose is added as protectant before lyophilization.

Reconstitution

Centrifuge tubes before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.

Storage

The product should be stored at -70℃ or -20℃.

Assay Data
Tris-Bis PAGE

Biotinylated CD3E&CD3G on Tris-Bis PAGE under reduced condition. The purity is greater than 95%.

SEC-HPLC

The purity of Biotinylated CD3E&CD3G was greater than 95% as determined by SEC-HPLC.

ELISA Data

Immobilized Biotinylated Human CD3E&CD3G at 0.5μg/ml (100μl/Well) on Streptavidin precoated (0.2μg/ml) plate. Dose response curve for Anti-CD3 Ab., mFc Tag with the EC50 of 22.4ng/ml determined by ELISA.

Background

T-cell surface glycoprotein CD3 epsilon&CD3 gamma chain, also known as CD3E&CD3G , are single-pass type I membrane proteins.When antigen presenting cells (APCs) activate T-cell receptor (TCR), TCR-mediated signals are transmitted across the cell membrane by the CD3 chains CD3D, CD3E, CD3G and CD3Z. All CD3 chains contain immunoreceptor tyrosine-based activation motifs (ITAMs) in their cytoplasmic domain.

Synonyms

CD3;CD3G;T-cell surface glycoprotein CD3 gamma chain;T-cell receptor T3 gamma chain;CD3g;T3G;T-cell surface glycoprotein CD3 epsilon chain;CD3e;CD3E

References

(1)Penaranda C , Tang Q , Bluestone J A . Anti-CD3 Therapy Promotes Tolerance by Selectively Depleting Pathogenic Cells while Preserving Regulatory T Cells[J]. The Journal of Immunology, 2011, 187(4):2015-2022.

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