KIR2DL4, also known as killer cell immunoglobulin-like receptor 2DL4, is a member of the killer cell Ig-like receptor (KIR) family. KIR proteins with the long cytoplasmic domain transduce inhibitory signals via an immune tyrosine-based inhibitory motif (ITIM), while KIR proteins with the short lack the ITIM motif and instead associate with the TYRO protein tyrosine kinase binding protein to transduce activating signals. This protein induces NK cells to produce IFN-gamma and stimulation with IL-2 upregulates cell surface expression on CD56dim cells and leads to the inhibition of the cytolytic NK cell function. Source: Recombinant protein corresponding to aa24-242 from human KIR2DL4, fused to hIgG-His-Tag at C-terminal, expressed in insect cell. Molecular Weight: ~51kD (458aa), 50-70kD (SDS-PAGE under reducing conditions.) Endotoxin: <1EU/1ug (determined by LAL method) AA Sequence: HVGGQDKPFC SAWPSAVVPQ GGHVTLRCHY RRGFNIFTLY KKDGVPVPEL YNRIFWNSFL ISPVTPAHAG TYRCRGFHPH SPTEWSAPSN PLVIMVTGLY EKPSLTARPG PTVRAGENVT LSCSSQSSFD IYHLSREGEA HELRLPAVPS INGTFQADFP LGPATHGETY RCFGSFHGSP YEWSDPSDPL PVSVTGNPSS SWPSPTEPSF KTGIARHLHL EPKSCDKTHT CPPCPAPELL GGPSVFLFPP KPKDTLMISR TPEVTCVVVD VSHEDPEVKF NWYVDGVEVH NAKTKPREEQ YNSTYRVVSV LTVLHQDWLN GKEYKCKVSN KALPAPIEKT ISKAKGQPRE PQVYTLPPSR DELTKNQVSL TCLVKGFYPS DIAVEWESNG QPENNYKTTP PVLDSDGSFF LYSKLTVDKS RWQQGNVFSC SVMHEALHNH YTQKSLSLSP GKHHHHHH 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 6 months after receipt at -20C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
