The HLY9.1.25 monoclonal antibody specifically binds to CD229 which is also known as, Signaling lymphocyte activation molecule family member 3 (SLAMF3), Lymphocyte antigen 9 (Ly9), or T-lymphocyte surface antigen Ly-9. CD229 is a 100-120 kDa, single-pass type I membrane glycoprotein that belongs to the SLAM family within the Ig superfamily. CD229 is expressed on thymocytes, T cells, B cells, dendritic cells, and NK cells. Through homophilic binding, CD229 may play a role in adhesive interactions between T and B cells. During T cell activation, CD229 localizes to the immunological synapse.
The antibody was conjugated to BD Horizon™ BUV805 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye is a tandem fluorochrome of BD Horizon BUV395 with an Ex Max of 348 nm and an acceptor dye with an Em Max at 805 nm. BD Horizon Brilliant BUV805 can be excited by the ultraviolet laser (355 nm) and detected with a 820/60 filter and a 770LP.