Acts upstream of or within several processes, including T cell activation; adrenal cortex development; and defense response to virus. Located in membrane. Is expressed in thymus primordium. Human ortholog(s) of this gene implicated in ACTH-independent macronodular adrenal hyperplasia 2. Orthologous to human ARMC5 (armadillo repeat containing 5). [provided by Alliance of Genome Resources, Apr 2022]