AUTHOR=Wu Chengcheng , Tao Lihan , Li Haiqin , Huang Cong , Zeng Yanbing TITLE=Two opposite abilities of the infectious bronchitis virus helicase Nsp13: separating the duplex and promoting the annealing of single-stranded nucleic acid JOURNAL=Frontiers in Veterinary Science VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2025.1560586 DOI=10.3389/fvets.2025.1560586 ISSN=2297-1769