Toll-Like Receptor 1 (TLR1) is a protein that plays a crucial role in the immune system. It is part of a family of receptors that help the body recognize pathogens, such as bacteria and viruses. TLR1 is primarily found on the surface of immune cells and works by detecting specific molecules associated with these pathogens, triggering an immune response to help protect the body. When TLR1 binds to its target molecules, it activates signaling pathways that lead to the production of inflammatory cytokines. This process enhances the immune response, allowing the body to fight off infections more effectively. TLR1 often works in conjunction with other receptors, such as Toll-Like Receptor 2 (TLR2), to recognize a broader range of pathogens.