The conserved single-cleavage mechanism of animal DROSHA enzymes.
The conserved single-cleavage mechanism of animal DROSHA enzymes.
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动物DROSHA酶保守的单裂解机制
DOI:
10.1038/s42003-021-02860-1
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发表时间:
2021-11-25
影响因子:
5.9
通讯作者:
Nguyen TA
中科院分区:
文献类型:
--
作者:
Nguyen TL;Nguyen TD;Nguyen TA
RNase III enzymes typically cleave both strands of double-stranded RNAs (dsRNAs). We recently discovered that a human RNase III, DROSHA, exhibits a single cleavage on the one strand of primary microRNAs (pri-miRNAs). This study revealed that DROSHAs from the other animals, including worms and flies, also show the single cleavage on dsRNAs. Furthermore, we demonstrated that the mechanism of single cleavage is conserved in animal DROSHA enzymes. In addition, the dsRNA-binding domain (dsRBD) and a 3p-strand cleavage-supporting helix (3pCSH) of the DROSHA enzymes foster a weak single cleavage on one strand, which ensures their double cleavages. Disrupting the interaction of dsRBD-RNA and 3pCSH-RNA by an internal loop (IL) and a 3pCSH-loop in the lower stem of pri-miRNAs, respectively, inhibits one of the double cleavages of DROSHAs, and this results in the single cleavage. Our findings expand our understanding of the enzymatic mechanisms of animal DROSHAs. They also indicate that there are currently unknown cellular functions of DROSHA enzymes using their single cleavage activity. Recently, the human RNase III enzyme DROSHA had been shown to exhibit single cleavage activity. Nguyen et al. report that this molecular mechanism of DROSHA is conserved in worms and flies, suggesting a common feature of animal DROSHAs.
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DOI:
10.1261/rna.065862.118
发表时间:
2018-07
期刊:
RNA (New York, N.Y.)
影响因子:
--
作者:
Kim K;Nguyen TD;Li S;Nguyen TA
通讯作者:
Nguyen TA
影响因子:
14.9
作者:
Fromm, Bastian;Domanska, Diana;Peterson, Kevin J.
通讯作者:
Peterson, Kevin J.
影响因子:
16
作者:
Partin, Alexander C.;Zhang, Kaiming;Nam, Yunsun
通讯作者:
Nam, Yunsun
DOI:
10.1186/1748-7188-6-26
发表时间:
2011-11-24
期刊:
Algorithms for molecular biology : AMB
影响因子:
--
作者:
Lorenz R;Bernhart SH;Höner Zu Siederdissen C;Tafer H;Flamm C;Stadler PF;Hofacker IL
通讯作者:
Hofacker IL
影响因子:
10.5
作者:
Han, JJ;Lee, Y;Kim, VN
通讯作者:
Kim, VN