DNA polymerase III, delta subunit (EC 2.7.7.7) is required for, along with delta' subunit, the assembly of the processivity factor beta(2) onto primed DNA in the DNA polymerase III holoenzyme-catalysed reaction [1]. The delta subunit is also known as HolA.

1: The delta and delta ' subunits of the DNA polymerase III holoenzyme are essential for initiation complex formation and processive elongation. Song MS, Pham PT, Olson M, Carter JR, Franden MA, Schaaper RM, McHenry CS; J Biol Chem 2001;276:35165-35175. PMID:11432857