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Biotinylated Human/Cynomolgus/Rhesus macaque CD28 Protein 4695



  • Expression: HEK293
  • Functional: Yes (ELISA)
  • Amino Acid Range: Asn19-Pro152
SKU: 4695parent Categories: , Tags: , , ,
Weight1 lbs
Dimensions9 × 5 × 2 in
product tag

N-His-Avi, also biotinylated

Biotinylated Human/Cynomolgus/Rhesus macaque CD28 Protein 4695

Size and concentration
100, 500µg and lyophilized
Storage Instructions
Valid for 12 months from date of receipt when stored at -80°C. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
Storage buffer
Shipped at ambient temperature.
> 95% as determined by Tris-Bis PAGE
target relevance
CD28 is the receptor for CD80 (B7-1) and CD86 (B7-2) proteins.When activated by Toll-like receptor ligands, the CD80 expression is upregulated in antigen presenting cells (APCs). The CD86 expression on antigen presenting cells is constitutive. CD28 is the only B7 receptor constitutively expressed on naive T cells.
Protein names
T-cell-specific surface glycoprotein CD28 (TP44) (CD antigen CD28)
Gene names
FUNCTION: Involved in T-cell activation, the induction of cell proliferation and cytokine production and promotion of T-cell survival. Enhances the production of IL4 and IL10 in T-cells in conjunction with TCR/CD3 ligation and CD40L costimulation (PubMed:8617933). Isoform 3 enhances CD40L-mediated activation of NF-kappa-B and kinases MAPK8 and PAK2 in T-cells (PubMed:15067037). {ECO:0000269|PubMed:15067037, ECO:0000269|PubMed:8617933}.
Subellular location
SUBCELLULAR LOCATION: Membrane; Single-pass type I membrane protein.; SUBCELLULAR LOCATION: [Isoform 3]: Cell surface {ECO:0000269|PubMed:15067037}.
TISSUE SPECIFICITY: Expressed in T-cells and plasma cells, but not in less mature B-cells.
SUBUNIT: Homodimer; disulfide-linked. Interacts with DUSP14. Binds to CD80/B7-1 and CD86/B7-2/B70. Interacts with GRB2. Isoform 3 interacts with CD40LG (PubMed:15067037). {ECO:0000269|PubMed:15067037, ECO:0000269|PubMed:15696168, ECO:0000269|PubMed:24098653}.
Post-translational modification
PTM: CD40LG induces tyrosine phosphorylation of isoform 3. {ECO:0000269|PubMed:15067037}.
Target Relevance information above includes information from UniProt accession : P10747
The UniProt Consortium


SPR with Biotinylated Human/Cynomolgus/Rhesus macaque CD28 Protein
Human B7-1, hFc Tag captured on CM5 Chip via Protein A can bind Biotinylated Human/Cynomolgus/Rhesus macaque CD28, His-Avi Tag with an affinity constant of 41.59 µM as determined in SPR assay (Biacore T200).
ELISA with Biotinylated Human/Cynomolgus/Rhesus macaque CD28 Protein
Immobilized Anti-CD28 Antibody, hFc Tag at 2µg/ml (100µl/Well) on the plate. Dose response curve for Biotinylated Human/Cynomolgus/Rhesus macaque CD28, His Tag with the EC50 of 24.4ng/ml determined by ELISA (QC Test).
SDS-PAGE gel of Biotinylated Human/Cynomolgus/Rhesus macaque CD28 Prote
Biotinylated Human/Cynomolgus/Rhesus macaque CD28 on Tris-Bis PAGE under reduced condition. The purity is greater than 95%.


Published literature highly relevant to the biological target of this product and referencing this antibody or clone are retrieved from PubMed database provided by The United States National Library of Medicine at the National Institutes of Health.



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