Analysis of the Structure of Human Telomerase RNA in Vivo

Overview

Journal Nucleic Acids Res

Publisher Oxford University Press

Specialty Biochemistry

Date 2002 Feb 14

PMID 11842102

Citations 44

Authors

Maria Antal

Eva Boros

Ferenc Solymosy

Tamas Kiss

Affiliations

Soon will be listed here.

Abstract

Telomerase is a ribonucleoprotein reverse transcriptase that synthesises telomeric DNA. The RNA component of telomerase acts as a template for telomere synthesis and binds the reverse transcriptase. In this study, we have performed in vivo and in vitro structural analyses of human telomerase RNA (hTR). In vivo mapping experiments showed that the 5'-terminal template domain of hTR folds into a long hairpin structure, in which the template sequence occupies a readily accessible position. Intriguingly, neither in vivo nor in vitro mapping of hTR confirmed formation of a stable 'pseudoknot' helix, suggesting that this functionally essential long range interaction is formed only temporarily. In vitro control mappings demonstrated that the 5'-terminal template domain of hTR cannot fold correctly in the absence of cellular protein factors. The 3'-terminal domain of hTR, both in vivo and in vitro, folds into the previously predicted box H/ACA snoRNA-like 'hairpin-hinge-hairpin-tail' structure. Finally, comparison of the in vivo and in vitro modification patterns of hTR revealed several regions that might be directly involved in binding of telomerase reverse transcriptase or other telomerase proteins.

Citing Articles

Telomerase RNA structural heterogeneity in living human cells detected by DMS-MaPseq.

Forino N, Woo J, Zaug A, Jimenez A, Edelson E, Cech T Nat Commun. 2025; 16(1):925.

PMID: 39843442 PMC: 11754830. DOI: 10.1038/s41467-025-56149-6.

Telomerase RNA structural heterogeneity in living human cells detected by DMS-MaPseq.

Forino N, Woo J, Zaug A, Jimenez A, Edelson E, Cech T bioRxiv. 2023; .

PMID: 37873413 PMC: 10592977. DOI: 10.1101/2023.10.04.560962.

How Structural Features Define Biogenesis and Function of Human Telomerase RNA Primary Transcript.

Rubtsova M, Dontsova O Biomedicines. 2022; 10(7).

PMID: 35884955 PMC: 9313293. DOI: 10.3390/biomedicines10071650.

Folding heterogeneity in the essential human telomerase RNA three-way junction.

Palka C, Forino N, Hentschel J, Das R, Stone M RNA. 2020; 26(12):1787-1800.

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Effect of therapies-mediated modulation of telomere and/or telomerase on cancer cells radiosensitivity.

Assani G, Xiong Y, Zhou F, Zhou Y Oncotarget. 2018; 9(79):35008-35025.

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