Enables protein-lysine N-methyltransferase activity. Involved in negative regulation of fatty acid beta-oxidation using acyl-CoA dehydrogenase and peptidyl-lysine trimethylation. Predicted to be located in cytoplasm. Predicted to be part of protein-containing complex. Predicted to be active in mitochondrial matrix. Is expressed in several structures, including central nervous system; gut; male reproductive gland or organ; respiratory system; and thymus. Orthologous to human ETFBKMT (electron transfer flavoprotein subunit beta lysine methyltransferase). [provided by Alliance of Genome Resources, Apr 2022]