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Human CD4/LEU3 Protein

Product Info

Recombinant Human CD4/LEU3 Protein is expressed from Expi293 with His tag and Avi tag at the C-terminal. It contains Lys26-Trp390.[Accession | P01730]

Molecular Weight

The protein has a predicted MW of 43.6 kDa. Due to glycosylation, the protein migrates to 50-60 kDa based on Tris-Bis PAGE result.


Less than 1EU per μg by the LAL method.


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


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


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


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

Assay Data
Tris-Bis PAGE

Human CD4 on Tris-Bis PAGE under reduced condition. The purity is greater than 95%.


The purity of Human CD4 is greater than 95% as determined by SEC-HPLC


Immobilized Human CD4,His Tag at 0.5μg (100μl/Well) on the plate.Dose response curve for Anti-CD4 Ab.,hFc Tag with the EC50 of 9.8ng/ml determined by ELISA.


CD4, also known as L3T4, T4, and W3/25, is an approximately 55 kDa type I transmembrane glycoprotein that is expressed predominantly on thymocytes and a subset of mature T lymphocytes. It is a standard phenotype marker for the identification of T cell populations.Integral membrane glycoprotein that plays an essential role in the immune response and serves multiple functions in responses against both external and internal offenses. In T-cells, functions primarily as a coreceptor for MHC class II molecule:peptide complex.


CD4 antigen (p55); CD4 antigen; CD4 molecule; CD4 receptor; CD4; CD4mut; T-cell surface antigen T4/Leu-3; T-cell surface glycoprotein CD4


(1)Lam S , Bollard C . T-cell therapies for HIV[J]. Immunotherapy, 2013, 5(4):407-414.

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