Evolution of anelloviruses from a circovirus-like ancestor through gradual augmentation of the jelly-roll capsid protein.

"the sequences have been deposited in genbank under accession numbers op629190-op629445."

"Conflict of interest: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest."

"Funding A.B. was supported by a post-doctoral fellowship from Foundation pour la Recherche Mèdicale (grant number SPF202110014092). M.K. was supported by a grant from the l’Agence Nationale de la Recherche (ANR-20-CE20-0009-02). A.L.K. and R.S.B. were supported by Institutional Development Awards (IDeA) Networks of Biomedical Research Excellence Assistantships (grant number P20GM103395) from the National Institute of General Medical Sciences of the National Institutes of Health (NIH). E.V.K. was supported by the Intramural Research Program of the NIH (National Library of Medicine). Weddell seal samples were collected under National Marine Fisheries Service Marine Mammal permit #17411, Antarctic Conservation Act permit #2014-003, and the University of Alaska Anchorage and University of Alaska Fairbanks’s Institutional Animal Care and Use Committee approvals #419971 and #854089, with funding from the National Science Foundation grant ANT-1246463 to J.M.B. The molecular work described in this study is supported by the Center of Evolution and Medicine Venture Fund (Center of Evolution and Medicine, Arizona State University, USA) grant awarded to A.V. The content is solely the responsibility of the authors and does not necessarily reflect the official views of the NIH. J.M.B. contributed to this work while serving at the National Science Foundation. Any opinion, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. The findings and conclusions in this article are those of the authors and do not necessarily represent the views of the US Fish and Wildlife Service. Collection of grizzly bear fecal samples was undertaken by Daniel Thompson and Kent Schmidlin at the Wyoming Game and Fish Department (Lander, Wyoming, USA) and the team at Trophy Game (USA)."