Predicted to contribute to NADH dehydrogenase (ubiquinone) activity. Predicted to be involved in cellular respiration; positive regulation of fibroblast proliferation; and response to cAMP. Predicted to act upstream of or within several processes, including adult walking behavior; mitochondrial respiratory chain complex I assembly; and psychomotor behavior. Predicted to be located in mitochondrion. Predicted to be part of mitochondrial respiratory chain complex I. Human ortholog(s) of this gene implicated in Leigh disease and nuclear type mitochondrial complex I deficiency 1. Orthologous to human NDUFS4 (NADH:ubiquinone oxidoreductase subunit S4). [provided by Alliance of Genome Resources, Apr 2022]