编辑“︁Dicer”︁（章节）

==功能==
[[File:MiRNA-biogenesis.jpg|thumb|left|Dicer酶的作用是將shRNA剪切爲siRNA或將miRNA前體剪切爲miRNA]]
Dicer酶會將轉錄而成的、經[[Drosha]]酶初步處理的shRNA（小髮卡RNA）剪切爲siRNA，或將miRNA前體（pre-miRNA）剪切爲miRNA。隨後，siRNA或miRNA會激活RISC的組裝和功能的行使，使RNA干擾得以繼續進行<ref name="Bernstein">{{cite journal |vauthors=Bernstein E, Caudy A, Hammond S, Hannon G |title=Role for a bidentate ribonuclease in the initiation step of RNA interference |url=https://archive.org/details/sim_nature-uk_2001-01-18_409_6818/page/362 |journal=Nature |volume=409 |issue=6818 |pages=363–6 |year=2001 |pmid=11201747 |doi=10.1038/35053110}}</ref>。