Genomic features of the novel duck-associated chapparvoviruses (DAC) compared to closely related viruses. (A) Schematic genome representations with in silico predicted open reading frames (ORFs, red for non-structural proteins (NS) and black for viral proteins (VP)), splicing donor and acceptor sites, poly-adenylation signals, and promoter (as indicated by the legend). Hypothetical proteins (with respective protein sizes) generated after mRNA splicing are shown at the bottom. (B) Conserved rolling circle replication (RCR) and Walker motifs typical of parvoviral SF3 helicases. CTCPaV1: Chestnut teal chaphamaparvovirus 1, ChCPV 2: chicken chapparvovirus 2, GAC: gull-associated chapparvovirus.