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吗啉基

吗啉基与RNA混合形成的结构片段

吗啉基又称吗啉(英语:Morpholino),是一种用来修饰基因表现的分子,吗啉基寡核苷酸是一种反义技术,可用来阻碍其他分子与特定核酸序列的结合。可阻挡RNA上约25个碱基的区域。此分子可应用在一些模式生物的研究上,包括小鼠斑马鱼非洲爪蟾[1]

除了组合成寡核苷酸之外,吗啉基也可能出现在其他分子中。但“Morpholino”指其寡核苷酸形式,也就是磷酰二胺吗啉代寡核苷酸(phosphorodiamidate morpholino oligomers,PMO)。吗啉基是对天然核苷酸结构重新设计获得的合成分子。长度多为25个碱基,以标准核苷酸碱基配对的方式与RNA互补结合。在结构上来看,吗啉基与DNA的区别在于尽管前者有标准的核苷酸碱基,这些碱基却连接在吗啉环上,而非脱氧核糖环。吗啉通过占据体内mRNA与其它分子作用位点来发生作用。

参见

参考文献

  1. ^ Heasman J. Morpholino oligos: making sense of antisense?. Dev. Biol. 2002, 243 (2): 209–14. PMID 11884031. 

延伸阅读

  • Moulton, Jon, Using Morpholinos to Control Gene Expression (Unit 4.30), Beaucage, Serge (编), Current Protocols in Nucleic Acid Chemistry, New Jersey: John Wiley & Sons, Inc., 2007, ISBN 978-0-471-24662-6 
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吗啉基
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