:microRNAs

Shobha Vasudevan1, Yingchun Tong, Joan A Steitz

  • 1Department of Molecular Biophysics and Biochemistry, Howard Hughes Medical Institute, Yale University School of Medicine, Boyer Center for Molecular Medicine, 295 Congress Avenue, New Haven, CT 06536, USA.

Science (New York, N.Y.)
|December 1, 2007
PubMed
概括

微RNAs (miRNAs) 可以通过与信使RNA (mRNA) 中的AU丰富元素 (AREs) 结合来激活细胞周期停止期间的基因翻译. 微核核蛋白 (miRNP) 的这种激活功能似乎随着细胞增殖而波动.

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MicroRNAs01:22

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MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA ends...
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Co-activators and Co-repressors

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