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Related Concept Videos

RNA Structure01:23

RNA Structure

Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
RNA Stability01:53

RNA Stability

Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
RNA Structure01:23

RNA Structure

Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
RNA Stability01:53

RNA Stability

Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
Nonsense-mediated mRNA Decay02:27

Nonsense-mediated mRNA Decay

The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
RNA Structure01:19

RNA Structure

The basic structure of RNA consists of a string of ribonucleotides attached by phosphodiester bonds. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...

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Related Experiment Video

Updated: Jul 12, 2026

A Novel Saturation Mutagenesis Approach: Single Step Characterization of Regulatory Protein Binding Sites in RNA Using Phosphorothioates
11:49

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Published on: August 21, 2018

An atomic mutation cycle for exploring RNA's 2'-hydroxyl group.

James L Hougland1, Shirshendu K Deb, Danijela Maric

  • 1Department of Biochemistry and Molecular Biology, Howard Hughes Medical Institute, The University of Chicago, Chicago, Illinois 60637, USA.

Journal of the American Chemical Society
|October 21, 2004
PubMed
Summary
This summary is machine-generated.

Researchers investigated the role of the RNA 2'-hydroxyl group's hydrogen atom. Using an atomic mutation cycle in the Tetetrahymena ribozyme, they revealed its catalytic contribution and hydrogen bonding network.

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • RNA Structure and Function

Background:

  • The 2'-hydroxyl group is crucial for RNA structure and function, acting as a hydrogen bond donor/acceptor.
  • Previous studies using 2'-deoxynucleotide substitution show the importance of these groups but not their specific mechanisms.

Purpose of the Study:

  • To elucidate the functional role of the hydrogen atom of the 2'-hydroxyl group in RNA.
  • To investigate the catalytic contribution of the cleavage site 2'-hydroxyl group and its hydrogen bond network.

Main Methods:

  • Utilized an atomic mutation cycle approach.
  • Studied the Tetrahymena ribozyme reaction to analyze the 2'-hydroxyl group's function.

Main Results:

  • Demonstrated the functional importance of the 2'-hydroxyl group's hydrogen atom.
  • Exposed the catalytic contribution of the cleavage site 2'-hydroxyl group and its associated hydrogen bond network.

Conclusions:

  • The atomic mutation cycle is a viable method for studying 2'-hydroxyl group function.
  • Identified specific 2'-hydroxyl groups that donate functionally significant hydrogen bonds.