The mouse monoclonal antibody 341 (also known as 34.1) recognizes rat CD8b, the 32-34 kDa beta chain of the CD8 coreceptor (extracellular epitope), expressed on T cell subsets and some other cell types, such as macrophages.
Cross-Reactivity (Details)
Rat
Purification
Purified antibody is conjugated with fluorescein isothiocyanate (FITC) under optimum conditions and unconjugated antibody and free fluorochrome are removed by size-exclusion chromatography.
Hirji, Lin, Bissonnette, Belosevic, Befus: "Mechanisms of macrophage stimulation through CD8: macrophage CD8alpha and CD8beta induce nitric oxide production and associated killing of the parasite Leishmania major." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 160, Issue 12, pp. 6004-11, (1998) (PubMed).
Kraus, Lambracht, Wonigeit, Hünig: "Negative regulation of rat natural killer cell activity by major histocompatibility complex class I recognition." in: European journal of immunology, Vol. 26, Issue 11, pp. 2582-6, (1997) (PubMed).
Hirji, Lin, Befus: "A novel CD8 molecule expressed by alveolar and peritoneal macrophages stimulates nitric oxide production." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 158, Issue 4, pp. 1833-40, (1997) (PubMed).
Torres-Nagel, Kraus, Brown, Tiefenthaler, Mitnacht, Williams, Hünig: "Differential thymus dependence of rat CD8 isoform expression." in: European journal of immunology, Vol. 22, Issue 11, pp. 2841-8, (1992) (PubMed).
CD8b molecule,The CD8b (CD8 beta) subunit of CD8 T cell coreceptor is expressed in CD8 alpha/beta heterodimers on majority of MHC I-restricted conventional T cells and thymocytes and in CD8 alpha/alpha homodimers on subsets of memory T cells, intraepithelial lymphocytes, NK cells, macrophages, mast cells, and dendritic cells. Regulation of CD8 beta level on T cell surface seems to be an important mechanism to control their effector function. Assembly of CD8 alpha/beta but not alpha/alpha dimers is connected with formation or localization to the lipid rafts. Recruiting triggered TCR complexes to these membrane microdomains as well as affinity of TCR to MHC I is modulated by CD8, thereby affecting the functional diversity of the TCR signaling.,Ly-3, Ly-C, Lyt-3