Enables lipopeptide binding activity. Involved in microglial cell activation; response to bacterial lipoprotein; and toll-like receptor signaling pathway. Predicted to be located in Golgi apparatus and membrane raft. Predicted to be part of Toll-like receptor 1-Toll-like receptor 2 protein complex. Biomarker of perinatal necrotizing enterocolitis. Human ortholog(s) of this gene implicated in several diseases, including IgA glomerulonephritis; aspergillosis; leprosy; pyelonephritis; and tuberculosis. Orthologous to human TLR1 (toll like receptor 1). [provided by Alliance of Genome Resources, Apr 2022]