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| Status |
Public on Aug 07, 2020 |
| Title |
Linking Key Steps of MicroRNA Biogenesis by TREX-2 and the Nuclear Pore Complex in Arabidopsis [miRNA-Seq] |
| Organism |
Arabidopsis thaliana |
| Experiment type |
Non-coding RNA profiling by high throughput sequencing
|
| Summary |
Unlike in metazoans, the stepwise biogenesis of microRNAs (miRNAs) occurs within the nucleus in plants. Whether or how the major steps in miRNA biogenesis are coordinated is largely unknown. Here, we show that the plant TREX-2 complex promotes multiple steps in miRNA biogenesis, including transcription, processing and nuclear export. Core subunits of TREX-2, THP1 and SAC3A, interact and co-localize with RNA Polymerase II to promote the transcription of MIR genes in the nucleoplasm. TREX-2 interacts with the microprocessor component SERRATE and promotes the formation of Dicing bodies in the nucleoplasm. THP1 also interacts and co-localizes with a nucleoporin protein NUP1 at the nuclear envelope. NUP1 and THP1 promote the nuclear export of miRNAs and AGO1. These results suggest that TREX-2 coordinates the transcription, processing and export steps in miRNA biogenesis to ensure efficient miRNA production.
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| |
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| Overall design |
Examination small RNAs in thp1-5 and nup1-cs line
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| |
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| Contributor(s) |
Zhang B, You C, Chen X |
| Citation(s) |
32690891 |
| Submission date |
May 13, 2020 |
| Last update date |
Aug 11, 2020 |
| Contact name |
Chenjiang You |
| E-mail(s) |
chenjiang.you@ucr.edu, youchenjiang2003@hotmail.com
|
| Organization name |
Fudan University
|
| Street address |
2005 Songhu Rd
|
| City |
Shanghai |
| State/province |
Shanghai |
| ZIP/Postal code |
200438 |
| Country |
China |
| |
|
| Platforms (1) |
| GPL17639 |
Illumina HiSeq 2500 (Arabidopsis thaliana) |
|
| Samples (12)
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| This SubSeries is part of SuperSeries: |
| GSE150473 |
Linking Key Steps of MicroRNA Biogenesis by TREX-2 and the Nuclear Pore Complex in Arabidopsis |
|
| Relations |
| BioProject |
PRJNA632508 |
| SRA |
SRP261411 |
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