title: Endogenous hepadnaviruses in the genome of the budgerigar (Melopsittacus undulatus) and the evolution of avian hepadnaviruses.
abstract: Endogenous hepadnaviruses (hepatitis B viruses [HBVs]) were recently discovered in the genomes of passerine birds. We mined six additional avian genomes and discovered multiple copies of endogenous HBVs in the budgerigar (order Psittaciformes), designated eBHBV. A phylogenetic analysis reveals that the endogenous hepadnaviruses are more diverse than their exogenous counterparts and that the endogenous and exogenous hepadnaviruses form distinct lineages even when sampled from the same avian order, indicative of multiple genomic integration events.
authors.affiliation: Center for Infectious Disease Dynamics, Department of Biology, The Pennsylvania State University, University Park, PA, USA.
authors.forename: Jie
authors.initials: J
authors.lastname: Cui
authors.forename: Edward C
authors.initials: EC
authors.lastname: Holmes
mesh_terms: D000818:Animals; D019143:Evolution, Molecular; D016678:Genome; D015613:Hepadnaviridae / Q000145:classification* / Q000235:genetics*; D046408:Melopsittacus / Q000235:genetics* / Q000821:virology*; D010802:Phylogeny; D016415:Sequence Alignment