Enables Toll-like receptor binding activity. Involved in intracellular protein transport and toll-like receptor signaling pathway. Acts upstream of or within several processes, including antigen processing and presentation of exogenous peptide antigen via MHC class II; positive regulation of cytokine production; and toll-like receptor signaling pathway. Located in cytoplasmic vesicle; endoplasmic reticulum; and lysosome. Human ortholog(s) of this gene implicated in brain disease. Orthologous to human UNC93B1 (unc-93 homolog B1, TLR signaling regulator). [provided by Alliance of Genome Resources, Apr 2022]