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{"title":"A new m6A reader complex","authors":"Raphael Trösch","doi":"10.1038/s41477-025-01904-2","DOIUrl":null,"url":null,"abstract":"","PeriodicalId":18904,"journal":{"name":"Nature Plants","volume":"11 1","pages":"8-8"},"PeriodicalIF":15.8000,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Plants","FirstCategoryId":"99","ListUrlMain":"https://www.nature.com/articles/s41477-025-01904-2","RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
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一个新的m6A阅读器综合体
n6 -甲基腺苷(m6A)是最广泛的mRNA修饰物,控制mRNA的稳定性和翻译效率。在植物中,其作用是由m6A读取器蛋白如进化保守c端区(ECT)蛋白介导的。哥本哈根大学的Marlene Reichel及其同事发现拟南芥中ECT2的m6A结合和读取器功能需要来自乙酰化降低结合亲和力(ALBA)家族的蛋白质,这表明这些因子形成了m6A读取器复合物。拟南芥编码11个ECTs;其中,ECT2和ECT3在胚胎后发育中起着最重要的作用,而ECT4的作用较小。ect2、ect3、ect4 (ect2/3/4)三突变体表现出器官发生延迟和形态异常,包括叶片、花瓣和硅片畸形以及毛状分枝增加。这些ECTs结合mRNA 3 '非翻译区的m6A修饰,并招募聚(A)结合蛋白以增强mRNA的稳定性。然而,ECTs mRNA结合的确切模式以及是否涉及其他因素尚不清楚。
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