Predicted to enable heme binding activity. Acts upstream of or within several processes, including hemoglobin metabolic process; positive regulation of immune response; and positive regulation of macromolecule metabolic process. Predicted to be located in extracellular region. Predicted to be active in extracellular space. Is expressed in brain; embryo; liver; liver left lobe; and liver right lobe. Orthologous to human HPX (hemopexin). [provided by Alliance of Genome Resources, Apr 2022]