{"type":"rich","version":"1.0","provider_name":"Transistor","provider_url":"https://transistor.fm","author_name":"萌喵读文献-生物信息学","title":"今日生物信息学最高分文献 - 2026-04-20","html":"<iframe width=\"100%\" height=\"180\" frameborder=\"no\" scrolling=\"no\" seamless src=\"https://share.transistor.fm/e/ed6686e5\"></iframe>","width":"100%","height":180,"duration":197,"description":"科研喵使用AI读文献，祝你效率百倍，访问labcat.com.cn下载。\n\n本期关注发表在《Nucleic Acids Research》(IF:16.6)上的研究\"Frequent occurrence and predicted functions of tRNAs with 4-base-pair anticodon stems in bacteria: extended superwobble hypothesis\"。科学家发现细菌中普遍存在具有4个碱基对反密码子茎的特殊tRNA，它能识别UGA密码子，代表了一种全新的密码子重新分配机制。研究团队在分析4万多个基因组后，特别在内共生细菌Candidatus Zinderia insecticola中确认了这种现象。实验证实这种tRNA可导致UGA读通，为理解遗传密码进化和tRNA结构多样性提供了突破性见解，可能革新我们对微生物基因表达调控的认知。","thumbnail_url":"https://img.transistorcdn.com/38WU46uKrju37cyiLrKcVSktFL4vxBb_oTgbpM_2CRw/rs:fill:0:0:1/w:400/h:400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS8zOGU2/ZmEyYWE0MDZkNGFj/NWMzNGY5ZmU4YTk0/ZTBlNS5qcGc.webp","thumbnail_width":300,"thumbnail_height":300}