Predicted to enable propionyl-CoA carboxylase activity. Predicted to be located in mitochondrial matrix. Predicted to be active in mitochondrion. Is expressed in several structures, including alar plate midbrain region; musculature system; optic tectum; optic vesicle; and pronephros. Human ortholog(s) of this gene implicated in amino acid metabolic disorder and propionic acidemia. Orthologous to human PCCB (propionyl-CoA carboxylase subunit beta).