Receptor for CCL19 and chemerin/RARRES2. Does not appear to be a signaling receptor, but may have a role in modulating chemokine-triggered immune responses by capturing and internalizing CCL19 or by presenting RARRES2 ligand to CMKLR1, a functional signaling receptor. Plays a critical role for the development of Th2 responses (By similarity). Expressed in macrophages, astrocytes, in glial cells. Constitutively expressed by mast cells. Detected in bronchial epithelium in OVA-induced airway inflammation. Up-regulated during dendritic cell (DC) maturation. By bacterial lipopolysaccharide in astrocytes. Lacks the conserved DRYLAIV motif in the second intracellular loop that is required for signaling of functional chemokine receptors. No visible phenotype. Deficient-mice have normal numbers of mast cells in all tissues analyzed. Wild-type and deficient mice develop marked local inflammation when sensitized with a high dose of DNP-specific IgE, however deficient mice have significantly reduced IgE-dependent passive cutaneous anaphylaxis (PCA) reactions when lower sensitizing dose is used. Deficient-mice show normal recruitment of circulating DC into the lung, but a defective trafficking of antigen-loaded lung DC to mediastinal lymph nodes. This defect was associated to a reduction in lymph node cellularity and reduced priming of T-helper cell 2 response. It was initially reported that CCRL2 responds functionally to CCL2, CCL5, CCL7, and CCL8 via intracellular calcium mobilization and transwell chemotaxis although no evidence for a direct ligand-receptor interaction was provided in this report (PubMed:14999816). These results are now controversial and other studies failed to confirm CCRL2 recognition and transwell chemotaxis of these chemokines or a series of other CC- and CXC-chemokines using CCRL2-transfected cells (PubMed:18794339). Belongs to the G-protein coupled receptor 1 family.