1. Signaling Pathways
  2. Epigenetics
  3. Small Interfering RNA (siRNA)

Small Interfering RNA (siRNA) (小干扰RNA)

小分子干扰RNA(siRNA)是一种小的外源性双链RNA(dsRNA)(20-25个核苷酸),可启动RNA干扰(RNAi)途径。短的dsRNA解旋,正链降解,反链与多种蛋白质成分形成RNA诱导沉默复合物(RISC)。RISC中保留的反义链与靶基因mRNA特异性互补。同时,RISC具有核酸酶活性,可以切割和降解靶基因mRNA,抑制靶基因的表达。不完全互补导致mRNA翻译抑制。

Small Interfering RNA (siRNA) is a small exogenous double-stranded RNA (dsRNA) (20-25 nucleotides), which triggers the RNA interference (RNAi) pathway. The short dsRNA unwinds and the sense strand is degraded. Antisense strand forms RNA induced silencing complex (RISC) with various protein components. The antisense strand retained in RISC is specifically complementary to the target gene mRNA. Meanwhile, RISC has nuclease activity, which can cut and degrade the target gene mRNA, and inhibit the expression of target gene. Incomplete complementarity results in mRNA translation inhibition.

Small Interfering RNA (siRNA) 相关产品 (29528):

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