Predicted to enable identical protein binding activity and mannose binding activity. Acts upstream of or within endoplasmic reticulum organization. Located in several cellular components, including COPII-coated ER to Golgi transport vesicle; endoplasmic reticulum-Golgi intermediate compartment; and sarcomere. Is expressed in pancreas epithelium. Human ortholog(s) of this gene implicated in factor V deficiency and factor XIII deficiency. Orthologous to human LMAN1 (lectin, mannose binding 1). [provided by Alliance of Genome Resources, Apr 2022]