The G42-8 monoclonal antibody specifically recognizes the alpha subunit (32 kDa) of CD8αα homodimer or CD8αβ heterodimer. The CD8 molecule binds to HLA class I molecules during interaction of CD8+ T cells with antigen-presenting cells or target cells. CD8 is expressed on T cytotoxic/suppressor cell populations. G42-8 stains approximately 13-48% of peripheral blood lymphocytes and 80% of thymocytes, as well as a subset of NK cells. This antibody is useful in detecting CD8+ T cells when using DimerX I reagents.
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. The 5' PCR handle allows for efficient sequencing library generation for Illumina sequencing platforms.
NOTE: The BD Rhapsody Single-Cell Analysis System must be used with the BD Rhapsody Express Instrument.