Zhu H, Shuman S.
J Biol Chem. 2005 Jul 15;280(28):25973-81 doi:10.1074/jbc.M504002200
Novel 3′-ribonuclease and 3′-phosphatase activities of the bacterial non-homologous end-joining protein, DNA ligase D.
These activities depend on Mn2+, and could be used to generate a 3'rNOH or 3'rNp oligo.