Toll-like receptor 2 (TLR2) 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. TLR2 specifically detects certain components of microbial cell walls, triggering an immune response to help fight infections. When TLR2 binds to its targets, it activates signaling pathways that lead to the production of inflammatory cytokines. This process enhances the body's ability to respond to infections and can also influence the development of various immune-related conditions. Understanding TLR2 is important for developing new therapies for diseases.