Predicted to be involved in several processes, including negative regulation of proteolysis; regulation of viral life cycle; and response to interferon-alpha. Predicted to act upstream of or within adaptive immune response. Located in alveolar lamellar body membrane and lysosomal membrane. Is expressed in lung. Orthologous to human LAMP3 (lysosomal associated membrane protein 3). [provided by Alliance of Genome Resources, Apr 2022]