C-C chemokine receptor type 4 is a protein that in humans is encoded by the CCR4 gene. [5] [6] [7] CCR4 has also recently been designated CD194 (cluster of differentiation 194).
The protein encoded by this gene belongs to the G protein-coupled receptor family. It is a receptor for the following CC chemokines:
Chemokines are a group of small structurally related proteins that regulate cell trafficking of various types of leukocytes. The chemokines also play fundamental roles in the development, homeostasis, and function of the immune system, and they have effects on cells of the central nervous system as well as on endothelial cells involved in angiogenesis or angiostasis. [7]
CCR4 and CAF-1 form a deadenylase complex. The complex cooperates with the release factor eRF3 and PABPC1 to shorten the poly(A) tail of mRNA during translation. [10]
CCR4 is often expressed on leukemic cells in cutaneous T-cell lymphoma (CTCL). [11]
Mogamulizumab is a humanised monoclonal antibody targeted at CCR4 and is an investigational drug for CTCL. [11]
Chemokine ligand 5 is a protein which in humans is encoded by the CCL5 gene. It is also known as RANTES.
Chemokine ligand 8 (CCL8), also known as monocyte chemoattractant protein 2 (MCP2), is a protein that in humans is encoded by the CCL8 gene.
C-C motif chemokine 11 also known as eosinophil chemotactic protein and eotaxin-1 is a protein that in humans is encoded by the CCL11 gene. This gene is encoded on three exons and is located on chromosome 17.
Chemokine ligand 20 (CCL20) or liver activation regulated chemokine (LARC) or Macrophage Inflammatory Protein-3 (MIP3A) is a small cytokine belonging to the CC chemokine family. It is strongly chemotactic for lymphocytes and weakly attracts neutrophils. CCL20 is implicated in the formation and function of mucosal lymphoid tissues via chemoattraction of lymphocytes and dendritic cells towards the epithelial cells surrounding these tissues. CCL20 elicits its effects on its target cells by binding and activating the chemokine receptor CCR6.
Chemokine ligand 21 (CCL21) is a small cytokine belonging to the CC chemokine family. This chemokine is also known as 6Ckine, exodus-2, and secondary lymphoid-tissue chemokine (SLC). The gene for CCL21 is located on human chromosome 9. CCL21 elicits its effects by binding to a cell surface chemokine receptor known as CCR7.
C-C motif chemokine 22 is a protein that in humans is encoded by the CCL22 gene.
CCL17 is a powerful chemokine produced in the thymus and by antigen-presenting cells like dendritic cells, macrophages, and monocytes. CCL17 plays a complex role in cancer. It attracts T-regulatory cells allowing for some cancers to evade an immune response. However, in other cancers, such as melanoma, an increase in CCL17 is linked to an improved outcome. CCL17 has also been linked to allergic diseases.
Chemokine ligand 19 (CCL19) is a protein that in humans is encoded by the CCL19 gene.
CC 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. To date, ten true members of the CC chemokine receptor subfamily have been described. These are named CCR1 to CCR10 according to the IUIS/WHO Subcommittee on Chemokine Nomenclature.
C-C chemokine receptor type 2 (CCR2 or CD192 is a protein that in humans is encoded by the CCR2 gene. CCR2 is a CC chemokine receptor.
C-C chemokine receptor type 7 is a protein that in humans is encoded by the CCR7 gene. Two ligands have been identified for this receptor: the chemokines ligand 19 (CCL19/ELC) and ligand 21 (CCL21).
C-C chemokine receptor type 1 is a protein that in humans is encoded by the CCR1 gene.
Chemokine receptor 6 also known as CCR6 is a CC chemokine receptor protein which in humans is encoded by the CCR6 gene. CCR6 has also recently been designated CD196. The gene is located on the long arm of Chromosome 6 (6q27) on the Watson (plus) strand. It is 139,737 bases long and encodes a protein of 374 amino acids.
C-C chemokine receptor type 10 is a protein that in humans is encoded by the CCR10 gene.
C-C chemokine receptor type 3 is a protein that in humans is encoded by the CCR3 gene.
Chemokine receptor 8, also known as CCR8, is a protein which in humans is encoded by the CCR8 gene. CCR8 has also recently been designated CDw198.
C-C chemokine receptor type 11 is a protein that in humans is encoded by the CCRL1 gene.
Chemokine-binding protein 2 is a protein that in humans is encoded by the CCBP2 gene.
C-C motif chemokine 4-like is a protein that in humans is encoded by the CCL4L1 gene.
C-C motif chemokine ligand 27 is a protein that in humans is encoded by the CCL27 gene.
This article incorporates text from the United States National Library of Medicine, which is in the public domain.