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Related Experiment Video

Updated: Feb 28, 2026

Metabolic Labeling of Newly Transcribed RNA for High Resolution Gene Expression Profiling of RNA Synthesis, Processing and Decay in Cell Culture

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Posttranscriptional RNA Pseudouridylation.

Meemanage D De Zoysa¹, Yi-Tao Yu¹

¹University of Rochester Medical Center, Center for RNA Biology, Rochester, NY, United States.

|June 12, 2017

Summary

This summary is machine-generated.

Pseudouridine (Ψ) is a key RNA modification found in various RNAs, crucial for their function. Research explores its two main synthesis pathways and structural insights, highlighting the need for further investigation into RNA pseudouridylation mechanisms.

Keywords:

Box H/ACA RNP Constitutive pseudouridylation Inducible pseudouridylation Pseudouridine synthase (PUS)

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Area of Science:

Biochemistry
Molecular Biology
RNA Biology

Background:

Pseudouridine (Ψ) is the most abundant RNA modification, critical for noncoding RNA function.
It is found in ribosomal RNAs, small nuclear RNAs, and transfer RNAs.
Pseudouridylation plays a role in RNA structure and function.

Purpose of the Study:

To review the mechanisms of pseudouridylation.
To discuss structural insights into pseudouridylation enzymes.
To highlight recent findings and future directions in RNA pseudouridylation research.

Main Methods:

Review of existing literature on pseudouridine synthases (PUSs) and box H/ACA ribonucleoproteins (RNPs).
Analysis of available crystal structures of PUSs and box H/ACA RNPs.
Discussion of experimental systems used to study pseudouridylation.

Main Results:

Two distinct pseudouridylation mechanisms exist: RNA-independent (PUSs) and RNA-guided (box H/ACA RNPs).
Crystal structures provide insights into protein-RNA interactions in box H/ACA RNPs.
Evidence for mRNA pseudouridylation has emerged.

Conclusions:

Pseudouridylation is a vital RNA modification with diverse mechanisms.
Structural studies have advanced our understanding of pseudouridylation machinery.
Further research is needed to fully elucidate the mechanisms and functions of RNA pseudouridylation.