Figure 1.

Representative complete coding sequence and partial genome organizations of the two distinct types of exogenous amniote chapparvoviruses (ChPVs). Open reading frames (ORFs) are represented by rectangular arrows, colored according to homology. Splice donor sites are marked by white-colored bars, acceptor sites by orange-colored bars. Blue-colored bars show predicted polyadenylation signals. Small arrows show predicted promoters and are colored according to prediction score (>0.95 = green; 0.9–0.95 = pink: <0.9 = yellow). Grey boxes indicate regions inferred to be transcribed but not translated. Note: ORF4 is unique to turkey parvovirus and is not found in other avian type 2 ChPVs, such as chicken ChPV2.