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__NOTOC__ RNase III enzymes specifically bind to and cleave double-stranded RNA (dsRNA). There are four subdivisions, known as Class 1, 2, 3, and 4. Prokaryotic ribonuclease III () (gene rnc) is an enzyme that digests double-stranded RNA. It is involved in the processing of ribosomal RNA precursors and of some mRNAs. * Class 1 RNases III are largely found in bacteria, bacteriophage, and some fungi. Among the RNases III in the class are the rnc from ''E. coli'', Pac1p from ''S. pombe'', and Rnt1p from ''S. cerevisiae''. Class 1 RNases III process precursors to ribosomal RNA, and in the case of fungi, process precursors to small nuclear RNA (snRNA) and small nucleolar RNA (snoRNA). * Class 2 RNases III include the Drosha family of enzymes known to function in maturation of precursors to miRNA. * Class 3 RNases III include the Dicer family of enzymes known to function in RNA interference (RNAi). * Class 4 RNases III called Mini-III are homodimeric enzymes and consist solely of the RNase III domains. == Human proteins containing this domain == DICER1; MRPL44; RNASEN; 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ribonuclease III」の詳細全文を読む スポンサード リンク
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