Predicted to enable signaling receptor activity. Involved in positive regulation of defense response to virus by host; positive regulation of toll-like receptor signaling pathway; and protein localization. Acts upstream of or within T cell antigen processing and presentation and phagocytosis, engulfment. Located in endoplasmic reticulum. Colocalizes with endosome membrane and lysosomal membrane. Orthologous to human TREML4 (triggering receptor expressed on myeloid cells like 4). [provided by Alliance of Genome Resources, Apr 2022]