The 21H12 monoclonal antibody specifically binds to TIM-4. TIM-4 is encoded by Timd4 (T cell immunoglobulin and mucin domain containing 4). TIM-4 is also known as Spleen, mucin-containing, knockout of lymphotoxin protein (SMUCKLER). TIM-4 is a single-pass type I membrane transmembrane glycoprotein belonging to the TIM family of the immunoglobulin superfamily. TIM-4 is expressed by macrophages and at low levels by dendritic cells. TIM-4 is a phosphatidylserine receptor that enhances the phagocytosis of apoptotic cells. It can also serve as a receptor for TIM-1, also known as the Hepatitis A virus cellular receptor 1 (Havcr1).
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.