Predicted to enable cytochrome-c oxidase activity. Predicted to be involved in mitochondrial respirasome assembly and regulation of oxidative phosphorylation. Located in mitochondrion. Is expressed in embryo; heart; lung; metanephros; and skeletal muscle. Used to study dilated cardiomyopathy. Orthologous to human COX7A1 (cytochrome c oxidase subunit 7A1). [provided by Alliance of Genome Resources, Apr 2022]