Fig. 1From: Discovery and characterization of the evolution, variation and functions of diversity-generating retroelements using thousands of genomes and metagenomesDGR in Bordetella phage BPP-1. Bordetella phage DGR is mainly composed of a target gene (Mtd) with a variable repeat (VR) in the tail, a template repeat (TR), a reverse transcriptase gene Brt (RT) and an accessory gene (Avd)Back to article page