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Related Concept Videos

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...
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 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...
Nucleic Acid Structure01:25

Nucleic Acid Structure

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.
DNA Structure
DNA has a double-helix structure. The...
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 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...

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Related Experiment Video

Updated: Jun 25, 2026

RNA Secondary Structure Prediction Using High-throughput SHAPE
13:42

RNA Secondary Structure Prediction Using High-throughput SHAPE

Published on: May 31, 2013

Prediction of RNA secondary structure with pseudoknots using integer programming.

Unyanee Poolsap1, Yuki Kato, Tatsuya Akutsu

  • 1Bioinformatics Center, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan. unyanee@kuicr.kyoto-u.ac.jp

BMC Bioinformatics
|February 12, 2009
PubMed
Summary

This study introduces a novel integer programming method for RNA secondary structure prediction, including pseudoknots. The new approach demonstrates superior sensitivity and specificity compared to existing methods for RNA folding.

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Area of Science:

  • Bioinformatics
  • Computational Biology
  • Molecular Biology

Background:

  • RNA secondary structure prediction is a key bioinformatics task.
  • Pseudoknots are crucial RNA substructures involved in biological processes.
  • Predicting RNA structures with pseudoknots remains challenging due to the NP-hard nature of the problem.

Purpose of the Study:

  • To develop a novel computational method for predicting RNA secondary structures with pseudoknots.
  • To address the challenges posed by the NP-hard nature of pseudoknot prediction.
  • To improve the accuracy and efficiency of RNA structure prediction.

Main Methods:

  • A new method based on integer programming is proposed.
  • The method formulates RNA structure prediction as an optimization problem, minimizing free energy.
  • Constraints are appropriately set to focus on a practical class of pseudoknots.

Main Results:

  • The proposed integer programming method outperforms existing methods in sensitivity for real RNA sequences.
  • The approach achieves good performance in both sensitivity and specificity for short RNA sequences.
  • Experimental results validate the effectiveness of the new prediction method.

Conclusions:

  • The integer programming-based approach offers a flexible and extensible solution for RNA structure prediction.
  • This method provides a promising direction for advancing RNA folding predictions.
  • The study highlights the potential of integer programming in computational biology.