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Chemokine receptors are cytokine receptors found on the surface of certain cells that interact with a type of cytokine called a chemokine. [ 1 ] [ 2 ] There have been 20 distinct chemokine receptors discovered in humans. [ 3 ]
Approximately 19 different chemokine receptors have been characterized to date, which are divided into four families depending on the type of chemokine they bind; CXCR that bind CXC chemokines, CCR that bind CC chemokines, CX3CR1 that binds the sole CX3C chemokine (CX3CL1), and XCR1 that binds the two XC chemokines (XCL1 and XCL2).
Chemokine receptors, two of which act as binding proteins for HIV (CD4 and CCR5), also belong to this family. [citation needed] Interleukin-17 receptor (IL-17R) family, which shows little homology with any other cytokine receptor family. Structural motifs conserved between members of this family include: an extracellular fibronectin III-like ...
Cytokine receptors are receptors that bind to cytokines. [ 1 ] In recent years, the cytokine receptors have come to demand the attention of more investigators than cytokines themselves, partly because of their remarkable characteristics, and partly because a deficiency of cytokine receptors has now been directly linked to certain debilitating ...
The biological effect is carried out through ligation of chemokine receptors CCR1 (ligand CCL3) and CCR5 (ligands CCL3 and CCL4) and the signal is then transferred into the cell, thus these cytokines affect any cell that has these receptors. [8]
CC chemokine receptors (or beta chemokine receptors) are integral membrane proteins that specifically bind and respond to cytokines of the CC chemokine family. They represent one subfamily of chemokine receptors, a large family of G protein-linked receptors that are known as seven transmembrane (7-TM) proteins since they span the cell membrane seven times.
CCL2 is a small cytokine that belongs to the CC chemokine family. CCL2 tightly regulates cellular mechanics [ 5 ] and thereby recruits monocytes , memory T cells , and dendritic cells to the sites of inflammation produced by either tissue injury or infection .
CXC chemokine receptors are integral membrane proteins that specifically bind and respond to cytokines of the CXC chemokine family. They represent one subfamily of chemokine receptors , a large family of G protein-linked receptors that are known as seven transmembrane (7-TM) proteins, since they span the cell membrane seven times.