RNA export through the nuclear pore complex is directional.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
06 10 2022
06 10 2022
Historique:
received:
11
01
2022
accepted:
22
09
2022
entrez:
6
10
2022
pubmed:
7
10
2022
medline:
12
10
2022
Statut:
epublish
Résumé
The changes occurring in mRNA organization during nucleo-cytoplasmic transport and export, are not well understood. Moreover, directionality of mRNA passage through the nuclear pore complex (NPC) has not been examined within individual NPCs. Here we find that an mRNP is compact during nucleoplasmic travels compared to a more open structure after transcription and at the nuclear periphery. Compaction levels of nuclear transcripts can be modulated by varying levels of SR proteins and by changing genome organization. Nuclear mRNPs are mostly rod-shaped with distant 5'/3'-ends, although for some, the ends are in proximity. The latter is more abundant in the cytoplasm and can be modified by translation inhibition. mRNAs and lncRNAs exiting the NPC exhibit predominant 5'-first export. In some cases, several adjacent NPCs are engaged in export of the same mRNA suggesting 'gene gating'. Altogether, we show that the mRNP is a flexible structure during travels, with 5'-directionality during export.
Identifiants
pubmed: 36202822
doi: 10.1038/s41467-022-33572-7
pii: 10.1038/s41467-022-33572-7
pmc: PMC9537521
doi:
Substances chimiques
Nucleocytoplasmic Transport Proteins
0
RNA, Long Noncoding
0
RNA, Messenger
0
DEAD-box RNA Helicases
EC 3.6.4.13
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
5881Informations de copyright
© 2022. The Author(s).
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