Enables electron transfer activity and iron-sulfur cluster binding activity. Predicted to be involved in electron transport chain; fatty acid beta-oxidation using acyl-CoA dehydrogenase; and response to oxidative stress. Located in mitochondrial membrane. Human ortholog(s) of this gene implicated in multiple acyl-CoA dehydrogenase deficiency. Orthologous to human ETFDH (electron transfer flavoprotein dehydrogenase). [provided by Alliance of Genome Resources, Apr 2022]