CD8B, also known as T-cell surface glycoprotein CD8 beta chain isoform 5, is a cell surface transmembrane glycoprotein. This protein serves as a co-receptor for the T cell receptor (TCR). It found on most cytotoxic T lymphocytes that mediates efficient cell to cell interactions within the immune system. CD8 forms a dimer, consisting of a pair of CD8 chains. The most common form of CD8 is composed of a CD8-alpha and CD8-beta chain. Both members of the immunoglobulin superfamily with an immunoglobulin variable (IgV)-like extracellular domain connected to the membrane by a thin stalk, and an intracellular tail. Recombinant human CD8B, fused to His-Tag at C-terminal, expressed in insect cell and purified by using conventional chromatography techniques. Source: Recombinant protein corresponding to aa22-170 from human CD8B, fused to His-Tag at C-terminal, expressed in Insect Cell. Molecular Weight: ~17.8kD (158aa) ~18-28kD (SDS-PAGE under reducing conditions) AA Sequence: ADPLQQTPAY IKVQTNKMVM LSCEAKISLS NMRIYWLRQR QAPSSDSHHE FLALWDSAKG TIHGEEVEQE KIAVFRDASR FILNLTSVKP EDSGIYFCMI VGSPELTFGK GTQLSVVDFL PTTAQPTKKS TLKKRVCRLP RPETQKGPLC SPHHHHHH Endotoxin: <1EU/1ug (LAL) Storage and Stability: May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
