Enables heme binding activity. Predicted to be involved in several processes, including heme biosynthetic process; learning or memory; and positive regulation of protein localization to plasma membrane. Located in mitochondrial outer membrane. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; respiratory system; and sensory organ. Used to study non-alcoholic fatty liver disease. Orthologous to human PGRMC1 (progesterone receptor membrane component 1). [provided by Alliance of Genome Resources, Apr 2022]