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Related Concept Videos

RNA Interference01:23

RNA Interference

24.3K
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
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RNA Interference01:23

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Experimental RNAi02:15

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RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
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siRNA - Small Interfering RNAs02:30

siRNA - Small Interfering RNAs

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Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
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RNA Structure01:23

RNA Structure

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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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Related Experiment Video

Updated: May 4, 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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Structure-Based Simulation and Sampling of Transcription Factor Protein Movements along DNA from Atomic-Scale Stepping to Coarse-Grained Diffusion

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Molecular dynamics simulation in RNA interference.

Xia Wang, Yonghua Wang, Lei Zheng

  • 1School of Medical Engineering, Hefei University of Technology, Hefei, Anhui Province, 230009, China. lzheng@hfut.edu.cn.

Current Medicinal Chemistry
|December 20, 2013
PubMed
Summary
This summary is machine-generated.

Molecular dynamics simulations reveal the structural and dynamic mechanisms of RNA interference (RNAi). This technique offers insights into small RNA biogenesis, target recognition, and cleavage for a deeper understanding of gene silencing.

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Area of Science:

  • Biochemistry and Molecular Biology
  • Computational Biology and Biophysics

Background:

  • RNA interference (RNAi) is a biological process where small RNA molecules regulate gene expression post-transcription.
  • Understanding the structural and dynamic aspects of RNAi components is crucial for elucidating its mechanisms.
  • Molecular dynamics (MD) simulations provide atomic-level insights into biomolecular motions and interactions.

Purpose of the Study:

  • To review recent advancements in applying MD simulations to study RNAi.
  • To explore how MD simulations illuminate functional modules, assemblies, and target recognition/cleavage in RNAi.
  • To present future perspectives on the utility of MD simulations in RNAi research.

Main Methods:

  • Review of existing literature on molecular dynamics simulations applied to RNA interference.
  • Analysis of studies focusing on structural and dynamic mechanisms within RNAi pathways.
  • Synthesis of findings related to small RNA biogenesis, target binding, and cleavage.

Main Results:

  • MD simulations have significantly advanced the understanding of RNAi structural dynamics.
  • Key insights have emerged regarding the mechanisms of small RNA biogenesis and function.
  • The role of MD in dissecting target recognition and cleavage processes has been highlighted.

Conclusions:

  • Molecular dynamics simulations are a powerful computational tool for investigating RNAi.
  • This technique offers atomic-scale resolution into the dynamic processes governing gene silencing.
  • Continued application of MD simulations promises further breakthroughs in RNAi mechanism elucidation.