|Recombinant Rat CD28 Protein is expressed from HEK293 with His tag at the C-terminus.It contains Asn20-Leu150.
|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.
|The protein has a predicted MW of 16.66 kDa. Due to glycosylation, the protein migrates to 40-50 kDa based on Tris-Bis PAGE result.
|> 95% as determined by Tris-Bis PAGE;> 95% as determined by HPLC
|Less than 1EU per ug by the LAL method.
|Shipped with dry ice.
|Supplied as 0.22 um filtered solution in PBS (pH 7.4).
|Stability And Storage
|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.