The HA58 monoclonal antibody specifically binds to CD54 which is also known as ICAM-1 (intracellular adhesion molecule-1). CD54 is an 85-110 kDa type I transmembrane glycoprotein that belongs to the immunoglobulin supergene family. A soluble form of CD54 can also be found in biological fluids. CD54 is expressed on endothelial cells and both resting (weak) and activated (moderate) lymphocytes and monocytes. CD54 is a ligand for LFA-1 (CD11a/CD18) and Mac-1 (CD11b/CD18). The CD54 adhesion molecule plays roles in inflammatory and immune responses and neoplasia. This antibody (NA/LE format) blocks the mixed-lymphocyte reaction (MLR) and the purified format is suitable for staining acetone-fixed, frozen tissue sections.
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.