Receptor for C-C type chemokines CCL17/TARC and CCL22/MDC. Functions as chemoattractant homing receptor on circulating memory lymphocytes and as coreceptor for some primary HIV-2 isolates. Can also mediate hippocampal-neuron survival.
NCBI and Uniprot Product Information
NCBI Description
The protein encoded by this gene belongs to the G-protein-coupled receptor family . It is a receptor for the CC chemokine - MIP-1, RANTES, TARC and MCP-1. Chemokines are a group of small polypeptide, structurally related molecules 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. [provided by RefSeq, Jul 2008]
Uniprot Description
CCR4: High affinity receptor for the C-C type chemokines CCL17/TARC and CCL22/MDC. The activity of this receptor is mediated by G(i) proteins which activate a phosphatidylinositol- calcium second messenger system. Can function as a chemoattractant homing receptor on circulating memory lymphocytes and as a coreceptor for some primary HIV-2 isolates. In the CNS, could mediate hippocampal-neuron survival. Belongs to the G-protein coupled receptor 1 family.
Protein type: Membrane protein, multi-pass; GPCR, family 1; Receptor, GPCR; Membrane protein, integral; Motility/polarity/chemotaxis
Chromosomal Location of Human Ortholog: 3p24
Cellular Component: external side of plasma membrane; integral to plasma membrane; plasma membrane
Molecular Function: C-C chemokine receptor activity; chemokine receptor activity
Biological Process: chemotaxis; elevation of cytosolic calcium ion concentration; G-protein coupled receptor protein signaling pathway; homeostasis of number of cells; immune response; inflammatory response; neuron migration; tolerance induction