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The ability of the immune system to recognize molecules that are broadly shared by pathogens is, in part, due to the presence of immune receptors called toll-like receptors (TLRs) that are expressed on the membranes of leukocytes including dendritic cells, macrophages, natural killer cells, cells of the adaptive immunity T cells, and B cells, and non-immune cells (epithelial and endothelial ...
The first function described for TLR4 was the recognition of exogenous molecules from pathogens (PAMPs), in particular LPS molecules from gram-negative bacteria. [13] As pattern recognition receptor, TLR4 plays a fundamental role in pathogen recognition and activation of innate immunity which is the first line of defense against invading micro-organisms.
Toll-like receptor 9 is a protein that in humans is encoded by the TLR9 gene. [5] TLR9 has also been designated as CD289 ( cluster of differentiation 289). It is a member of the toll-like receptor (TLR) family.
Toll-like receptor 2 also known as TLR2 is a protein that in humans is encoded by the TLR2 gene. [5] TLR2 has also been designated as CD282 ( cluster of differentiation 282). TLR2 is one of the toll-like receptors and plays a role in the immune system .
Toll-like receptor 5, also known as TLR5, is a protein which in humans is encoded by the TLR5 gene. [5] It is a member of the toll-like receptor (TLR) family. TLR5 is known to recognize bacterial flagellin from invading mobile bacteria. [ 6 ]
Toll-like receptor 6 is a protein that in humans is encoded by the TLR6 gene. [5] TLR6 is a transmembrane protein, member of toll-like receptor family, which belongs to the pattern recognition receptor (PRR) family. TLR6 acts in a heterodimer form with toll-like receptor 2 (TLR2).
Toll-like receptor 7, also known as TLR7, is a protein that in humans is encoded by the TLR7 gene. Orthologs are found in mammals and birds. [ 5 ] It is a member of the toll-like receptor (TLR) family and detects single stranded RNA.
The leukotriene (LT) receptors are G protein-coupled receptors that bind and are activated by the leukotrienes.They include the following proteins: . Leukotriene B4 receptors (BLTRs) – bind to and are activated by LTB4: