This polymerase is devoid of exonuclease activity. a 2'-deoxyribonucleoside 5'-triphosphate + DNA(n) = diphosphate + DNA(n+1) Belongs to the DNA polymerase type-B family. SSO1459 and SSO8124 have been merged into one gene. SSO1459 and SSO8124 have been merged into one gene.