The OX-90 monoclonal antibody specifically recognizes CD200 (OX-2 antigen), a type-1 transmembrane glycoprotein containing two extracellular Ig-like domains. CD200 is expressed on thymocytes, neurons, B lymphocytes, splenic follicular dendritic cells and endothelium, and subsets of T lymphocytes and dendritic cells; but not on NK cells, granulocytes, monocytes, or macrophages. CD200 Receptor (CD200R; OX2R) expression is restricted to myeloid cells, and it appears that its engagement with CD200 results in inhibition and/or down-regulation of myeloid cell activity.
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.