Human CD4/LEU3 Protein, Ultra Low Endotoxin
Catalog No: CD4-HP003
- Species
- Human
- Expression System
- HEK293
- Tag
- Fc, Fc
- Activity
- Activity verified
Product overview
Recombinant Human CD4/LEU3 Protein is expressed in HEK293 cells with an hFc (IgG1) at the C-terminus. It contains amino acid residues Lys26-Trp390 (UniProt accession: P01730).
Product Details
- Molecular Aliases
- CD4 antigen (p55); CD4 molecule; CD4 receptor; CD4; CD4mut; EU3
- Protein Length
- Lys26-Trp390
- Expression System
- HEK293
- Theoretical Molecular Weight
- The protein has a predicted MW of 67.5 kDa. Due to glycosylation, the protein migrates to 70-80 kDa based on Bis-Tris PAGE result.
- Purity
- > 95% as determined by Bis-Tris PAGE > 95% as determined by HPLC
- Endotoxin
- Less than 0.01 EU per μg by the LAL method.
- Buffer / Formulation
- Lyophilized from 0.22μm filtered solution in PBS, 100mM L-arginine (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
- State
- Lyophilized
- Storage Conditions
- -20 to -80°C for 12 months as supplied from date of receipt. -80°C for 3 months after reconstitution. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
- Reconstitution Advice
- Dissolve the lyophilized protein in distilled water. Please refer to the Certificate of Analysis for detailed instructions.
Data Display
Human CD4 on Bis-Tris 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 at 1μg/ml (100μl/Well) on the plate. Dose response curve for Biotinylated Anti-CD4 Antibody, hFc Tag with the EC50 of 15.4ng/ml determined by ELISA (QC Test).
Background
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.
References
- Lam S, Bollard C. T-cell therapies for HIV[J]. Immunotherapy, 2013, 5(4):407-414. Note: HPLC results always come from liquid protein, due to absorption peak interference of trehalose in lyophilized powder.
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