The protein encoded by this gene is a member of the G protein-coupled receptor family.This receptor was identified as a gene induced by the Epstein-Barr virus (EBV)，and is thought to be a mediator of EBV effects on B lymphocytes.This receptor is expressed in various lymphoid tissues and activates B and T lymphocytes.It has been shown to control the migration of memory T cells to inflamed tissues，as well as stimulate dendritic cell maturation.The chemokine (C-C motif) ligand 19 (CCL19/ECL) has been reported to be a specific ligand of this receptor.Signals mediated by this receptor regulate T cell homeostasis in lymph nodes，and may also function in the activation and polarization of T cells，and in chronic inflammation pathogenesis.Alternative splicing of this gene results in multiple transcript variants.