The JOVI.1 monoclonal antibody recognizes an epitope common to a large proportion of human CD4+ or CD8+ T lymphocytes that express the T cell receptor beta chain (TCRβ). The antibody was generated from a mouse immunized with transgenic mouse lymphoid cells that expressed the rearranged human Vβ3-Cβ1 TCR chain derived from the cloned human HA1.7 T helper cell. This antibody reacts with TCR-Cβ1+ T cells and one of several different TCRβ V regions, but not with TCR-Cβ2+ T cells. JOV1.1 antibody reportedly recognized several Cβ1 TCR expressing cell lines or clones including Jurkat, CH7C17, and HA1.7 cells. The JOVI.1 antibody can be used to stimulate proliferative responses by JOVI.1-positive T cells. It can also reportedly be used for immunoprecipitation and to stain JOVI.1+ T cells in frozen tissue sections.
This antibody is conjugated to BD Horizon BV605 which is part of the BD Horizon Brilliant™ Violet family of dyes. With an Ex Max of 407-nm and Em Max of 602-nm, BD Horizon BV605 can be excited by a violet laser and detected with a standard 610/20-nm filter set. BD Horizon BV605 is a tandem fluorochrome of BD Horizon BV421 and an acceptor dye with an Em max at 605-nm. Due to the excitation of the acceptor dye by the green (532 nm) and yellow-green (561 nm) lasers, there will be significant spillover into the PE and BD Horizon PE-CF594 detectors off the green or yellow-green lasers. BD Horizon BV605 conjugates are very bright, often exhibiting brightness equivalent to PE conjugates and can be used as a third color off of the violet laser.