The virD operon in Agrobacterium encodes a site-specific endonuclease, and a number of other poorly characterised products. This family represents the VirD5 protein.

1: Molecular characterization of the virD operon from Agrobacterium tumefaciens. Porter SG, Yanofsky MF, Nester EW; Nucleic Acids Res 1987;15:7503-7517. PMID:3658701