The 624915 monoclonal antibody specifically binds to TLR5 (Toll-like Receptor 5) which is also known as CD285, MELIOS, SLEB1, and TIL3. TLR5 is a type I transmembrane glycoprotein of the Toll-like Receptor family. It is expressed on mucosal epithelial cells and leucocytes, including monocytes and some immature dendritic cells and CD4-positive T cells. CD285 binds to bacterial flagellin. Flagellin binding induces TLR5 dimerization and intracellular signaling through MyD88 resulting in the cellular production of proinflammatory cytokines and immune system activation.