The B1 monoclonal antibody specifically binds to the γδ T cell receptor (γδ TCR). This receptor complex consists of two disulfide-linked transmembrane glycoproteins, a γ chain (45-60 kDa) and a δ subunit (40-60 kDa). The γδ TCR is associated with the signal-transducing CD3 complex. The γδ TCR is expressed by thymocytes and by peripheral T cell subsets (γδ T cells) that are located in the blood, liver, skin and various lymphoid and mucosal tissues. γδ T cells contribute to both innate and adaptive immune responses to infections and tumors. Reports suggest that γδ T cells may also play roles in antigen presentation and the regulation of autoimmune responses.
The antibody was conjugated to an oligonucleotide that contains an antibody clone-specific barcode (ABC) flanked by a poly-A tail on the 3' end and a PCR handle (PCR primer binding site) on the 5' end. The ABC for this antibody was designed to be used with other BD AbSeq oligonucleotides conjugated to other antibodies. All AbSeq ABC sequences were selected in silico to be unique from human and mouse genomes, have low predicted secondary structure, and have high Hamming distance within the BD AbSeq portfolio, to allow for sequencing error correction and unique mapping. The poly-A tail of the oligonucleotide allows the ABC to be captured by the BD Rhapsody™ system or other oligo-dT-based capture systems. The 5' PCR handle allows for efficient sequencing library generation for Illumina sequencing platforms.