ArticleMolecular and cellular biology2021
SUMOylation- and GAR1-Dependent Regulation of Dyskerin Nuclear and Subnuclear Localization.
Article in Molecular and cellular biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 17 citations in OpenAlex.
- Troponin: biology, molecular mechanisms, and multidimensional clinical applications.Molecular biomedicine · 2026Review
- Disease mutations in the N-terminal extension and α2'-helix of dyskerin do not abolish dimerization but disrupt binding to the telomerase RNA.RNA (New York, N.Y.) · 2026Article
- Identification and Computational Analysis of a Novel Pathogenic DKC1 Variant Underlying X-Linked Dyskeratosis Congenita.Biochemical genetics · 2026Article
- Co-opted SUMO machinery promotes condensate formation associated with membranous replication organelles of a positive-strand RNA virus.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Fyn-mediated phosphorylation of Menin disrupts telomere maintenance in stem cells.bioRxiv : the preprint server for biology · 2024Article
- The C-terminal extension of dyskerin is a dyskeratosis congenita mutational hotspot that modulates interaction with telomerase RNA and subcellular localization.Human molecular genetics · 2024Article
- Advances in understanding telomerase assembly.Biochemical Society transactions · 2023Review
- AKT1 induces Nanog promoter in a SUMOylation-dependent manner in different pluripotent contexts.BMC research notes · 2023Article
- Intrinsically disordered regions are not sufficient to direct the compartmental localization of nucleolar proteins in the nucleus.PLoS biology · 2023Article
- New Insights into Dyskerin-CypA Interaction: Implications for X-Linked Dyskeratosis Congenita and Beyond.Genes · 2023Article
- Post-Transcriptional and Post-Translational Modifications in Telomerase Biogenesis and Recruitment to Telomeres.International journal of molecular sciences · 2023Review
- Dyskerin: an essential pseudouridine synthase with multifaceted roles in ribosome biogenesis, splicing, and telomere maintenance.RNA (New York, N.Y.) · 2021Review
- SUMO: Glue or Solvent for Phase-Separated Ribonucleoprotein Complexes and Molecular Condensates?Frontiers in molecular biosciences · 2021Review
- RNA-Protein Assemblies: A Review of Biophysical Principles and Coarse-Grained Modeling Approaches.Wiley interdisciplinary reviews. RNAReview
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
Abstract
The nuclear and subnuclear compartmentalization of the telomerase-associated protein and H/ACA ribonucleoprotein component dyskerin is an important although incompletely understood aspect of H/ACA ribonucleoprotein function. Four SUMOylation sites were previously identified in the C-terminal nuclear/nucleolar localization signal (N/NoLS) of dyskerin. We found that a cytoplasmic localized C-terminal truncation variant of dyskerin lacking most of the C-terminal N/NoLS represents an under-SUMOylated variant of dyskerin compared to wild-type dyskerin. We demonstrate that mimicking constitutive SUMOylation of dyskerin using a SUMO3 fusion construct can drive nuclear accumulation of this variant and that the SUMO site K467 in this N/NoLS is particularly important for the subnuclear localization of dyskerin to the nucleolus in a mature H/ACA complex assembly- and SUMO-dependent manner. We also characterize a novel SUMO-interacting motif in the mature H/ACA complex component GAR1 that mediates the interaction between dyskerin and GAR1. Mislocalization of dyskerin, either in the cytoplasm or excluded from the nucleolus, disrupts dyskerin function and leads to reduced interaction of dyskerin with the telomerase RNA. These data indicate a role for dyskerin C-terminal N/NoLS SUMOylation in regulating the nuclear and subnuclear localization of dyskerin, which is essential for dyskerin function as both a telomerase-associated protein and as an H/ACA ribonucleoprotein.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.