DNA polymerase II, which participates in chromosomal DNA replication (By similarity). Involved in the determination of cell fate during plant embryogenesis. Contributes to the flowering time repression. a 2'-deoxyribonucleoside 5'-triphosphate + DNA(n) = diphosphate + DNA(n+1) Binds 1 [4Fe-4S] cluster. Heterotetramer. Mostly expressed at low levels in inflorescence (floral meristem and flowers until anthesis), and, to a lower extent, in seeds. The DNA polymerase activity domain resides in the N-terminal half of the protein, while the C-terminus is necessary for maintenance of the complex. The CysA-type zinc finger is required for PCNA-binding. The CysB motif binds 1 4Fe-4S cluster and is required for the formation of polymerase complexes. No visible effects. When associated with heterozygote POL2A disruption; lethal, with sporophytic embryo-defective with an arrest at the globular stage during embryo development. When associated with esd7-1 mutation of POL2A; very early flowering. Belongs to the DNA polymerase type-B family.