遗传 ›› 2004, Vol. 26 ›› Issue (2): 267-270.

• 专论与综述 • 上一篇    下一篇

DNA甲基化与组蛋白甲基化的关系

李建许,刘红林   

  1. 南京农业大学动物科技学院,南京 210095
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-03-28 发布日期:2004-03-28
  • 通讯作者: 刘红林

The Relationship of DNA Methylation and Histone Methylation

LI Jan-Xu,LIU Hong-Lin   

  1. College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095 China
  • Received:1900-01-01 Revised:1900-01-01 Online:2004-03-28 Published:2004-03-28
  • Contact: LIU Hong?Lin

摘要: 在真核生物基因组及基因组以外,存在着多种共价修饰,其中,DNA和组蛋白的甲基化都与基因的沉默存在着联系,DNA和H3K9的甲基化在调节基因过程中具有协同作用,并拮抗H3K4的甲基化。近来的研究显示,两种甲基化机制之间似乎还存在着联系,即DNA的甲基化可能依赖于H3K9的甲基化,但在哺乳动物中,两种甲基化的关系可能更复杂。

关键词: DNA, 组蛋白, 甲基化, 甲基转移酶

Abstract: In and out of the eukaryotic genomes, there exist many covalent modifications, of which are the methylation of DNA and histones, and they are both involved in genes silencing, in which the methylation of DNA and H3K9 are synergistic, but the methylation of H3K4 is antagonistic to them.The rencent studies showed that these two methylations are correlated, that is, DNA methylation is dependent on the methylation of H3K9. However, the relationship of these two methylations is more complicated in mammals than in lower eukaryotons and plants.