MicroRNAs inhibit the translation of target mRNAs on the endoplasmic reticulum in Arabidopsis.
MicroRNAs inhibit the translation of target mRNAs on the endoplasmic reticulum in Arabidopsis.
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DOI:
10.1016/j.cell.2013.04.005
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发表时间:
2013-04-25
期刊:
影响因子:
64.5
通讯作者:
Chen X
中科院分区:
文献类型:
--
作者:
Li S;Liu L;Zhuang X;Yu Y;Liu X;Cui X;Ji L;Pan Z;Cao X;Mo B;Zhang F;Raikhel N;Jiang L;Chen X
Translation inhibition is a major but poorly understood mode of action of micro(mi)RNAs in plants and animals. In particular, the subcellular location where this process takes place is unknown. Here we show that the translation inhibition but not the mRNA cleavage activity of Arabidopsis miRNAs requires ALTERED MERISTEM PROGRAM1 (AMP1). AMP1 encodes an integral membrane protein associated with endoplasmic reticulum (ER) and ARGONAUTE1, the miRNA effector and a peripheral ER membrane protein. Large differences in polysome association of miRNA target RNAs are found between wild type and the amp1 mutant for membrane-bound but not total polysomes. This, together with AMP1-independent recruitment of miRNA target transcripts to membrane fractions, shows that miRNAs inhibit the translation of target RNAs on the ER. This study demonstrates that translation inhibition is an important activity of plant miRNAs, reveals the subcellular location of this activity, and uncovers a previously unknown function of the ER.
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影响因子:
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作者:
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通讯作者:
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影响因子:
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影响因子:
7.2
作者:
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影响因子:
21.3
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通讯作者:
Carthew, Richard W.
DOI:
10.1126/science.1215691
发表时间:
2012-04-13
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Djuranovic S;Nahvi A;Green R
通讯作者:
Green R