CD8b.2 Rat anti-Mouse, Brilliant Violet 786, Clone: 53-5.8, BD Optibuild™
Rat Monoclonal Antibody
Manufacturer: BD Biosciences 740843
The 53-5.8 monoclonal antibody specifically binds to the β chain of the CD8 differentiation antigen (Ly-3.2 or Lyt-3.2) of most mouse strains, having weak reactivity with Ly-3.1 strains (e.g., AKR, C58, MRL, PL). The CD8 α and α chains (CD8a) form heterodimers with the CD8 β chain (CD8b, Ly-3, or Lyt-3) on the surface of most thymocytes. A subpopulation of mature T lymphocytes (i.e., MHC class I-restricted T cells, including most T suppressor/cytotoxic cells) expresses almost exclusively the CD8 αβ heterodimer (the α chain is absent). Subsets of γδ TCR-bearing T cells, intestinal intraepithelial lymphocytes, and dendritic cells express CD8a without CD8b. It has been suggested that the expression of the CD8a/CD8b heterodimer is restricted to T lymphocytes which matured in the thymus or in an extrathymic environment that had been influenced by thymus-initiated neuroendocrine signals. CD8 is an antigen coreceptor on the T-cell surface which interacts with MHC class I molecules on antigen-presenting cells. It participates in T-cell activation through its association with the T-cell receptor complex and protein tyrosine kinase lck (p56lck).
The antibody was conjugated to BD Horizon™ BV786 which is part of the BD Horizon Brilliant™ Violet family of dyes. This dye is a tandem fluorochrome of BD Horizon BV421 with an Ex Max of 405-nm and an acceptor dye with an Em Max at 786-nm. BD Horizon BV786 can be excited by the violet laser and detected in a filter used to detect Cy™7-like dyes (eg, 780/60-nm filter).
|Brilliant Violet 786|
|Aqueous buffered solution containing ≤0.09% sodium azide.|
|IgG1, κ, also known as Louvain, LOU/C, LOU/M IgG1, κ|
|Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.|
|Ly-3.2; Lyt-3.2; CD8b.2|
|Mouse thymus or spleen|
|The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography.|
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