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Related Concept Videos

RNA Structure01:23

RNA Structure

68.9K
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...
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RNA Structure01:19

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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.
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Nucleic Acid Structure01:25

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The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms  a 5′ to 3′ phosphodiester linkage.
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Nucleic acids02:43

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Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
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The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes,...
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Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
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Related Experiment Video

Updated: May 2, 2026

RNA Secondary Structure Prediction Using High-throughput SHAPE
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RNA Secondary Structure Prediction Using High-throughput SHAPE

Published on: May 31, 2013

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Abstract shape analysis of RNA.

Stefan Janssen1, Robert Giegerich

  • 1Faculty of Technology and Center of Biotechnology, Bielefeld University, Bielefeld, Germany.

Methods in Molecular Biology (Clifton, N.J.)
|March 19, 2014
PubMed
Summary
This summary is machine-generated.

Abstract shape analysis classifies RNA secondary structures into classes based on helix arrangements. This method provides a comprehensive view of the RNA

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Area of Science:

  • Computational Biology
  • Bioinformatics
  • Molecular Biology

Background:

  • Understanding RNA secondary structures is crucial for predicting molecular function.
  • The Boltzmann ensemble represents all possible RNA structures, but is computationally intensive to analyze.
  • Existing methods often focus only on the minimal free energy structure, neglecting alternatives.

Purpose of the Study:

  • To introduce abstract shape analysis as a method for exploring the RNA secondary structure landscape.
  • To classify diverse RNA secondary structures into meaningful categories based on helical arrangements.
  • To enable the computation of probabilities for structures within defined shape classes.

Main Methods:

  • Abstract shape analysis categorizes secondary structures by their helix patterns.
  • The RNA shapes tool implements these abstract shape analysis functions.
  • Probabilities are calculated for structures belonging to each identified shape class.

Main Results:

  • Abstract shape analysis effectively classifies competing secondary structures into distinct shape classes.
  • The method allows for the computation of probabilities associated with each shape class.
  • A representative subset of structures covering the complete Boltzmann ensemble can be generated.

Conclusions:

  • Abstract shape analysis provides a powerful framework for understanding the full spectrum of RNA secondary structures.
  • The RNA shapes tool facilitates the exploration of relevant structural alternatives beyond minimal free energy.
  • This approach enables novel analyses and problem-solving in RNA structure research.