Modulates injury-induced and chemical pain hypersensitivity (PubMed:24139797). Ligand of FPR1, can chemoattract macrophages, promote phagocytosis and increase ROS release (PubMed:25109685). Expressed in a descrete subset of dorsal root ganglia neurons called C-low-threshold mechanoreceptors (at protein level) (PubMed:24139797). Expressed in LPS-stimulated monocytes and macrophages, especially in polarized M1 (PubMed:25109685). Up-regulated in LPS-stimulated monocytes and macrophages, especially in polarized M1. Mutant mice exhibit enhanced mechanical and chemical hypersensitivity following inflammation and nerve injury. Belongs to the TAFA family.