Beyond secondary structure: primary-sequence determinants license pri-miRNA hairpins for processing.
Beyond secondary structure: primary-sequence determinants license pri-miRNA hairpins for processing.
复制标题
DOI:
10.1016/j.cell.2013.01.031
复制
发表时间:
2013-02-14
期刊:
影响因子:
64.5
通讯作者:
Bartel DP
中科院分区:
文献类型:
--
作者:
Auyeung VC;Ulitsky I;McGeary SE;Bartel DP
To use microRNAs to down-regulate mRNA targets, cells must first process these ~22 nt RNAs from primary transcripts (pri-miRNAs). These transcripts form RNA hairpins important for processing, but additional determinants must distinguish pri-miRNAs from the many other hairpin-containing transcripts expressed in each cell. Illustrating the complexity of this recognition, we show that most Caenorhabditis elegans pri-miRNAs lack determinants required for processing in human cells. To find these determinants, we generated >1011 variants of four human pri-miRNAs, sequenced millions that retained function and compared them with the starting variants. Our results confirmed the importance of pairing in the stem and revealed three primary-sequence determinants, including an SRp20-binding motif (CNNC) found downstream of most pri-miRNA hairpins in bilaterian animals but not in nematodes. Adding this and other determinants to C. elegans pri-miRNAs imparted efficient processing in human cells, thereby confirming the importance of primary-sequence determinants for distinguishing pri-miRNAs from other hairpin-containing transcripts.
登录
查看更多内容
影响因子:
11.4
作者:
Bedard, Kristin M.;Daijogo, Sarah;Semler, Bert L.
通讯作者:
Semler, Bert L.
DOI:
10.1016/j.bbagrm.2011.05.015
发表时间:
2011-11
影响因子:
4.7
作者:
Feng, Yong;Zhang, Xiaoxiao;Song, Qingfeng;Li, Tongbin;Zeng, Yan
通讯作者:
Zeng, Yan
影响因子:
30.8
作者:
Bentwich, I;Avniel, A;Bentwich, Z
通讯作者:
Bentwich, Z
影响因子:
10.5
作者:
Babiarz, Joshua E.;Ruby, J. Graham;Blelloch, Robert
通讯作者:
Blelloch, Robert
影响因子:
64.5
作者:
Han, Jinju;Lee, Yoontae;Kim, V. Narry
通讯作者:
Kim, V. Narry