描述:
      
	The RPA-T8 monoclonal antibody specifically binds to CD8 alpha (CD8
	α
	). CD8
	α
	is a type I transmembrane glycoprotein and a member of
	the immunoglobulin superfamily. CD8
	α
	is expressed by the majority of thymocytes, by subpopulations of
	αβ
	T cells and
	γδ
	T cells and by
	some NK cells. Cell surface CD8
	α
	is expressed either as a disulfide-linked homodimer (CD8
	αα
	) or as a heterodimer (CD8
	αβ
	) when
	disulfide-bonded to a CD8 beta chain (CD8
	β
	). CD8-positive
	αβ
	T cells coexpress both CD8
	αα
	homodimers and CD8
	αβ
	heterodimers whereas
	some
	γδ
	T cells and NK cells express CD8
	αα
	homodimers. CD8 plays important roles in T cell activation and selection. The extracellular
	IgSF domain of CD8
	α
	binds to a non-polymorphic determinant on HLA class I molecules (
	α
	3 domain) and enables CD8 to function as a
	co-receptor with MHC class I-restricted TCR during T cell recognition of antigen. The cytoplasmic domain of CD8
	α
	associates with Lck, a
	Src family protein tyrosine kinase that is involved in intracellular signaling. The RPA-T8 and HIT8a (Cat. No. 555337) monoclonal antibodies
	are not cross-blocking.
	The antibody was conjugated to BD Horizon™ BV711 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 711-nm. BD Horizon™
	BV711 can be excited by the violet laser and detected in a filter used to detect Cy™5.5 / Alexa Fluor® 700-like dyes (eg, 712/20-nm filter).
	Due to the excitation and emission characteristics of the acceptor dye, there may be moderate spillover into the Alexa Fluor® 700 and
	PerCP-Cy™5.5 detectors. However, the spillover can be corrected through compensation as with any other dye combination