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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 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...
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...

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Related Experiment Video

Updated: Jun 12, 2026

Structure-Based Simulation and Sampling of Transcription Factor Protein Movements along DNA from Atomic-Scale Stepping to Coarse-Grained Diffusion
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Coarse-graining RNA nanostructures for molecular dynamics simulations.

Maxim Paliy1, Roderick Melnik, Bruce A Shapiro

  • 1M2NeT Lab, Wilfrid Laurier University 75 University Avenue West Waterloo, ON, N2 L 3C5, Canada. mpaliy@wlu.ca

Physical Biology
|June 26, 2010
PubMed
Summary

New coarse-grained models enable microsecond simulations of large RNA nanostructures. These models accurately capture RNA conformations, advancing bionanotechnology applications.

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Last Updated: Jun 12, 2026

Structure-Based Simulation and Sampling of Transcription Factor Protein Movements along DNA from Atomic-Scale Stepping to Coarse-Grained Diffusion
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Published on: April 12, 2019

Area of Science:

  • Computational Biology
  • Biophysics
  • Nanotechnology

Background:

  • RNA nanostructures are crucial in bionanotechnology.
  • Simulating their molecular dynamics requires efficient models.
  • Current atomistic models are limited in timescale and system size.

Purpose of the Study:

  • To develop and validate coarse-grained models for RNA nanostructures.
  • To enable simulations of large RNA polymers at microsecond timescales.
  • To assess the accuracy of these models in describing RNA conformations.

Main Methods:

  • Developed a series of coarse-grained models with 1-3 beads per nucleotide.
  • Incorporated varying levels of detailed structural information.
  • Performed molecular dynamics simulations reaching microsecond timescales.
  • Compared model precision against atomistic simulations and reference structures.

Main Results:

  • Coarse-grained models achieved microsecond timescales for thousands of nucleotides.
  • Three-beads-per-nucleotide models, with few universal parameters, accurately described RNA conformations.
  • Model precision was comparable to models using detailed dihedral angle information.
  • Enabled simulations relevant for bionanotechnology applications.

Conclusions:

  • Coarse-grained models offer a powerful tool for simulating large RNA systems.
  • The developed models provide a balance between computational efficiency and structural accuracy.
  • These findings facilitate advancements in RNA-based nanotechnology and molecular design.