ArticleNucleic acids research2015
Human nucleolar protein Nop52 (RRP1/NNP-1) is involved in site 2 cleavage in internal transcribed spacer 1 of pre-rRNAs at early stages of ribosome biogenesis.
Article in Nucleic acids research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 22 citations in OpenAlex.
- The RNA-binding protein RRP1 brakes macrophage one-carbon metabolism to suppress autoinflammation.Nature communications · 2025Article
- Genomic hallmarks and therapeutic targets of ribosome biogenesis in cancer.Briefings in bioinformatics · 2024Article
- Inhibition of HSP90 in Driver Oncogene-Defined Lung Adenocarcinoma Cell Lines: Key Proteins Underpinning Therapeutic Efficacy.International journal of molecular sciences · 2023Article
- Actively transcribed rDNA and distal junction (DJ) sequence are involved in association of NORs with nucleoli.Cellular and molecular life sciences : CMLS · 2023Article
- Human nucleolar protein SURF6/RRP14 participates in early steps of pre-rRNA processing.PloS one · 2023Article
- Rcl1 depletion impairs 18S pre-rRNA processing at the A1-site and up-regulates a cohort of ribosome biogenesis genes in zebrafish.Nucleic acids research · 2021Article
- NORs on human acrocentric chromosome p-arms are active by default and can associate with nucleoli independently of rDNA.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- Sirtuin 7 promotes 45S pre-rRNA cleavage at site 2 and determines the processing pathway.Journal of cell science · 2019Article
- Article
- Prohibitin 2 localizes in nucleolus to regulate ribosomal RNA transcription and facilitate cell proliferation in RD cells.Scientific reports · 2018Article
- Nol12 is a multifunctional RNA binding protein at the nexus of RNA and DNA metabolism.Nucleic acids research · 2017Article
- Nucleolus-derived mediators in oncogenic stress response and activation of p53-dependent pathways.Histochemistry and cell biology · 2016Review
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Authors and funding
8 authors at 4 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
During the early steps of ribosome biogenesis in mammals, the two ribosomal subunits 40S and 60S are produced via splitting of the large 90S pre-ribosomal particle (90S) into pre-40S and pre-60S pre-ribosomal particles (pre-40S and pre-60S). We previously proposed that replacement of fibrillarin by Nop52 (RRP1/NNP-1) for the binding to p32 (C1QBP) is a key event that drives this splitting process. However, how the replacement by RRP1 is coupled with the endo- and/or exo-ribonucleolytic cleavage of pre-rRNA remains unknown. In this study, we demonstrate that RRP1 deficiency suppressed site 2 cleavage on ITS1 of 47S/45S, 41S and 36S pre-rRNAs in human cells. RRP1 was also present in 90S and was localized in the dense fibrillar component of the nucleolus dependently on active RNA polymerase I transcription. In addition, double knockdown of XRN2 and RRP1 revealed that RRP1 accelerated the site 2 cleavage of 47S, 45S and 41S pre-rRNAs. These data suggest that RRP1 is involved not only in competitive binding with fibrillarin to C1QBP on 90S but also in site 2 cleavage in ITS1 of pre-rRNAs at early stages of human ribosome biogenesis; thus, it is likely that RRP1 integrates the cleavage of site 2 with the physical split of 90S into pre-40S and pre-60S.
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