TLR2: Cooperates with LY96 to mediate the innate immune response to bacterial lipoproteins and other microbial cell wall components. Cooperates with TLR1 to mediate the innate immune response to bacterial lipoproteins or lipopeptides. Acts via MYD88 and TRAF6, leading to NF-kappa-B activation, cytokine secretion and the inflammatory response. May also promote apoptosis in response to lipoproteins. Recognizes mycoplasmal macrophage- activating lipopeptide-2kD (MALP-2), soluble tuberculosis factor (STF), phenol-soluble modulin (PSM) and B.burgdorferi outer surface protein A lipoprotein (OspA-L) cooperatively with TLR6. Interacts with LY96, TLR1 and TLR6 (via extracellular domain). Binds MYD88 (via TIR domain). Interacts with TICAM1. Ligand binding induces the formation of a heterodimer with TLR1. Interacts with CNPY3. Highly expressed in peripheral blood leukocytes, in particular in monocytes, in bone marrow, lymph node and in spleen. Also detected in lung and in fetal liver. Levels are low in other tissues. Belongs to the Toll-like receptor family.
Protein type: Receptor, misc.; Apoptosis; Membrane protein, integral; Motility/polarity/chemotaxis; Cell surface
Chromosomal Location of Human Ortholog: 4q32
Cellular Component: cell surface; cell projection; integral to plasma membrane; cytoplasm; plasma membrane; external side of plasma membrane
Molecular Function: protein binding; peptidoglycan binding; transmembrane receptor activity; protein heterodimerization activity; triacylated lipoprotein binding; lipopolysaccharide receptor activity; receptor activity; pattern recognition receptor activity; diacylated lipoprotein binding
Biological Process: positive regulation of nitric oxide biosynthetic process; positive regulation of interleukin-12 production; apoptosis; response to toxin; positive regulation of leukocyte migration; microglial cell activation; leukotriene metabolic process; positive regulation of NF-kappaB import into nucleus; response to molecule of fungal origin; detection of triacylated bacterial lipoprotein; positive regulation of interleukin-18 production; signal transduction; nitric oxide metabolic process; positive regulation of interleukin-10 production; activation of NF-kappaB transcription factor; response to insulin stimulus; positive regulation of interleukin-8 production; negative regulation of cell proliferation; lipopolysaccharide-mediated signaling pathway; positive regulation of interferon-beta production; positive regulation of oligodendrocyte differentiation; inflammatory response; toll-like receptor 4 signaling pathway; positive regulation of Wnt receptor signaling pathway; positive regulation of tumor necrosis factor biosynthetic process; negative regulation of interleukin-12 production; detection of diacylated bacterial lipoprotein; cell surface pattern recognition receptor signaling pathway; positive regulation of interleukin-6 production; positive regulation of tumor necrosis factor production; positive regulation of toll-like receptor signaling pathway; positive regulation of chemokine production; toll-like receptor 2 signaling pathway; MyD88-dependent toll-like receptor signaling pathway; induction by symbiont of defense-related host nitric oxide production; defense response to Gram-positive bacterium; negative regulation of interleukin-17 production; myelin formation in the central nervous system; toll-like receptor signaling pathway; response to hypoxia; innate immune response; positive regulation of transcription from RNA polymerase II promoter; immune response; I-kappaB phosphorylation; response to progesterone stimulus; chloramphenicol transport; positive regulation of cytokine secretion; positive regulation of inflammatory response; positive regulation of nitric-oxide synthase biosynthetic process
Disease: Leprosy, Susceptibility To, 3; Mycobacterium Tuberculosis, Susceptibility To
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