Receptor for a C-C type chemokine. Binds to MIP-1-alpha, RANTES, and less efficiently, to MIP-1-beta or MCP-1 and subsequently transduces a signal by increasing the intracellular calcium ions level. Responsible for affecting stem cell proliferation. Interacts with CREB3. Detected in the heart, spleen, lung, peritoneal exudate cells and leukocytes. Belongs to the G-protein coupled receptor 1 family.