Nature CommunicationsPre-splicing conformation and stepwise circularization of a group I intron in Azoarcus pre-tRNAYibao HongJiashu LiuXiaojing ZhangJi LiuShanshan LiKaiming Zhang2026-03-20Full textDOI https://doi.org/10.1038/s41467-026-70747-y