Rcl1 depletion impairs 18S pre-rRNA processing at the A-site and up-regulates a cohort of ribosome biogenesis genes in zebrafish
Nucleic Acids Research, ISSN: 1362-4962, Vol: 49, Issue: 10, Page: 5743-5759
2021
- 11Citations
- 7Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations11
- Citation Indexes11
- 11
- Captures7
- Readers7
Article Description
Yeast Rcl1 is a potential endonuclease that mediates pre-RNA cleavage at the A2-site to separate 18S rRNA from 5.8S and 25S rRNAs. However, the biological function of Rcl1 in opisthokonta is poorly defined. Moreover, there is no information regarding the exact positions of 18S pre-rRNA processing in zebrafish. Here, we report that zebrafish pre-rRNA harbours three major cleavage sites in the 5′ETS, namely-477nt (A′-site),-97nt (A0-site) and the 5′ETS and 18S rRNA link (A1-site), as well as two major cleavage regions within the ITS1, namely 208-218nt (site 2) and 20-33nt (site E). We also demonstrate that depletion of zebrafish Rcl1 mainly impairs cleavage at the A1-site. Phenotypically, rcl1-/- mutants exhibit a small liver and exocrine pancreas and die before 15 days post-fertilization. RNA-seq analysis revealed that the most significant event in rcl1-/- mutants is the up-regulated expression of a cohort of genes related to ribosome biogenesis and tRNA production. Our data demonstrate that Rcl1 is essential for 18S rRNA maturation at the A1-site and for digestive organogenesis in zebrafish. Rcl1 deficiency, similar to deficiencies in other ribosome biogenesis factors, might trigger a common mechanism to upregulate the expression of genes responsible for ribosome biogenesis.
Bibliographic Details
Oxford University Press (OUP)
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