Description
CD5, also known as Leu-1, Ly-1, and T1, is a 67 kDa transmembrane glycoprotein in the scavenger receptor superfamily. CD5 has been shown to interact homophilically, with CD72 on B cells, and with beta-glucan components of fungal cell walls. CD5 expression on developing thymocytes is positively regulated by signaling through the T cell antigen receptor (TCR) and is upregulated on tolerized peripheral CD4+ cells. It inhibits TCR signaling and promotes T cell nonresponsiveness and survival. CD5 signaling inhibits the generation of regulatory T cells but promotes the development of Th17 cells. Within the B cell lineage, CD5 is expressed on B-1a cells, anergic B cells, and IL-10 producing regulatory B cells. Similarly to on T cells, it negatively regulates signaling through the B cell antigen receptor and supports peripheral B cell survival, anergy, and tolerance. B cells can produce an intracellularly-retained form of CD5 which lacks the signal peptide and a portion of the first SRCR domain. CD5 is also involved in the cellular entry of hepatitis C virus into T cells.
Specifications
|
Synonyms |
CD5 molecule; CD5; LEU1; T1; CD5 antigen |
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Uniprot No. |
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|
Source |
Recombinant Human CD5 Protein is expressed from HEK293 Cells with hFc tag and Avi tag at the C-terminal. It contains Arg25-Asn371. |
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Molecular Weight |
Approximately 67.1 kDa. Due to glycosylation, the protein migrates to 75-82 kDa based on Tris-Bis PAGE result. |
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Purity |
> 95% as determined by SDS-PAGE and HPLC. |
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Activity |
ELISA Data: Immobilized Human CD5 at 0.5μg/ml (100μl/Well) on the plate. Dose response curve for Biotinylated Anti-CD5 Antibody, hFc Tag with the EC50 19.6ng/ml determined by ELISA. |
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Endotoxin |
< 1.0 EU per 1μg of the protein by the LAL method. |
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Formulation |
Lyophilized from 0.22 μm filtered solution in PBS (pH 7.4). Normally 5% trehalose is added as protectant before lyophilization. |
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Reconstitution |
Centrifuge tubes before opening. Reconstituting to a concentration more than 100 μg/mL is recommended (usually we use 1 mg/mL solution for lyophilization). Dissolve the lyophilized protein in distilled water. |
Storage
The product should be stored at -20~-80℃ for 1 year from date of receipt.
2-7 days, 2 ~8 °C under sterile conditions after reconstitution.
3-6 months, -20~-80℃ under sterile conditions after reconstitution.
Recommend to aliquot the protein into smaller quantities when first used and avoid repeated freeze-thaw cycles.
Note
1.Avoid repeated freezing and thawing.
2.Please operate with lab coats and disposable gloves, for your safety.
3.This product is for research use only.
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The product is for research purposes only and is not intended for therapeutic or diagnostic use in humans or animals. Products and content are protected by patents, trademarks, and copyrights owned by Yeasen Biotechnology. Trademark symbols indicate the country of origin, not necessarily registration in all regions.
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