Predicted to enable several functions, including DNA polymerase binding activity; DNA polymerase processivity factor activity; and DNA-directed DNA polymerase activity. Predicted to be involved in mitochondrial DNA replication and positive regulation of DNA-directed DNA polymerase activity. Predicted to act upstream of or within in utero embryonic development; mitochondrion organization; and respiratory electron transport chain. Predicted to be located in mitochondrial nucleoid. Predicted to be part of gamma DNA polymerase complex. Predicted to be active in mitochondrion. Human ortholog(s) of this gene implicated in autosomal dominant progressive external ophthalmoplegia with mitochondrial DNA deletions 4 and mitochondrial DNA depletion syndrome. Orthologous to human POLG2 (DNA polymerase gamma 2, accessory subunit). [provided by Alliance of Genome Resources, Apr 2022]