Predicted to enable protein-disulfide reductase activity. Involved in mitochondrial respiratory chain complex assembly. Acts upstream of or within several processes, including cellular response to leukemia inhibitory factor; mitochondrial DNA repair; and regulation of protein export from nucleus. Located in mitochondrion. Orthologous to human CHCHD4 (coiled-coil-helix-coiled-coil-helix domain containing 4). [provided by Alliance of Genome Resources, Apr 2022]