Anti-Mouse H-2K^d (MHC Class I) – DyLight^® 650

Purified Recombinant Mouse I H-2K^d (>98%)

This DyLight® 650 conjugate is formulated in 0.01 M phosphate buffered saline (150 mM NaCl) PBS pH 7.4, 1% BSA and 0.09% sodium azide as a preservative.

This DyLight^® 650 conjugate is stable when stored at 2-8°C. Do not freeze.

Next Day 2-8°C

Red Laser (652 nm)

Clone A4C8.1-Do9 recognizes an epitope on mouse MHC class I H-2K haplotype d.

H-2Kd antibody, clone A4C8.1-Do9, recognizes the major histocompatibility complex (MHC) class I H-2K haplotype d (H-2Kd). MHC class I is ubiquitously expressed on the cell surface of nucleated cells and consists of a 45-kDa type I transmembrane glycoprotein (α-chain or heavy chain) and a 12-kDa soluble protein (β2-microglobulin, β2M)^1,2. The α-chain consists of three domains (α1, α2, and α3)³. α1 and α2 form the closed antigen-binding groove and bind to 8-10 aa peptides derived from cytosolic antigens^4-6. β2M noncovalently associates with α3, which is essential for MHC stability. H-2Kd plays a critical role in the adaptive immune response by presenting endogenous antigens to cytotoxic CD8 T cells. MHC class I molecules can also present exogenous antigens to CD8 T cells via a process known as cross-presentation⁷. The T cell receptor (TCR)/CD3 complex of CD8 T cells interacts with peptide-MHC class I, which induces CD8 T cell activation and subsequent cell-killing. CD8 molecules also bind to MHC class I, which helps augment TCR signaling⁸. In contrast to CD8 T cells, MHC class I is an inhibitory ligand for natural killer (NK) cells, promoting self tolerance⁹. MHC class I also contributes to the positive selection of CD8 T cells and NK cell specificity^10,11.

H-2Kd is ubiquitously expressed on nucleated cells from mice of the H-2Kd haplotype, including BALB/c.

1. Hauptfeld, V. (1984) Immunogenetics 19:169