Recombinant Human/Cynomolgus/Rhesus Macaque CD28
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BackgroundCD28 is a 44 kD glycoprotein and a member of the Ig superfamily. In its capacity as a costimulatory receptor, CD28 produces co-stimulatory signals necessary for T cell activation and survival. CD28 is the only B7 receptor constitutively expressed on naive T cells. Without having this CD28/B7 interaction, T cells will fail to respond to their specific antigen when coming in contact with an MHC/antigen complex and thus, are said to be anergic. Protein DetailsPurity >95% by SDS-PAGE and analyzed by silver stain. Endotoxin Level <0.1 EU/µg as determined by the LAL method Fusion Protein Tag Fc Fusion Protein Protein Accession No. Amino Acid Sequence nk ilvkqspmlv aydnavnlsc kysynlfsre fraslhkgld savevcvvyg nysqqlqvys ktgfncdgkl gnesvtfylq nlyvnqtdiy fckievmypp pyldneksng tiihvkgkhl cpsplfpgps kpdmdpkscd kthtcppcpa pellggpsvf lfppkpkdtl misrtpevtc vvvdvshedp evkfnwyvdg vevhnaktkp reeqynstyr vvsvltvlhq dwlngkeykc kvsnkalpap iektiskakg qprepqvytl ppsrdeltkn qvsltclvkg fypsdiavew esngqpenny kttppvldsd gsfflysklt vdksrwqqgn vfscsvmhea lhnhytqksl slspgk
N-terminal Sequence Analysis Asn19 State of Matter Lyophilized Predicted Molecular Mass The predicted molecular weight is Mr 42.2 kDa. However, the actual molecular weight as observed by migration on SDS-PAGE is Mr 60-70 kDa. Predicted Molecular Mass 42.2 Formulation This recombinant protein was 0.2 µm filtered and lyophilized from modified Dulbecco’s phosphate buffered saline (1X PBS) pH 7.2 – 7.3 with no calcium, magnesium, or preservatives. Storage and Stability This lyophilized protein is stable for six to twelve months when stored desiccated at -20°C to -70°C. After aseptic reconstitution, this protein may be stored at 2°C to 8°C for one month or at -20°C to -70°C in a manual defrost freezer. Avoid Repeated Freeze Thaw Cycles. See Product Insert for exact lot specific storage instructions. Country of Origin USA Shipping Next Day Ambient NCBI Gene Bank Certificate of AnalysisIMPORTANT Use lot specific datasheet for all technical information pertaining to this recombinant protein. |
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Products are for research use only. Not for use in diagnostic or therapeutic procedures.