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Related Concept Videos

Partial Fractions01:28

Partial Fractions

A partial fraction is a component of a rational expression represented as the sum of simpler fractions. When a rational function is expressed as a ratio of two polynomials, it can often be decomposed into a sum of fractions whose denominators are simpler polynomials, typically linear or irreducible quadratic factors. This process is called partial fraction decomposition, and it is used to simplify complex expressions for integration, solving equations, or analysis.Partial fraction decomposition...
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,...
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,...
Nuclear Export of mRNA02:31

Nuclear Export of mRNA

Before mRNAs are exported to the cytoplasm, it is crucial to check each mRNA for structural and functional integrity. Eukaryotic cells use several different mechanisms, collectively known as mRNA surveillance, to look for irregularities in mRNAs. Irregular or aberrant mRNA are rapidly degraded by various enzymes. If a defective mRNA escapes the surveillance, it would be translated into a protein which would either be non-functional or not function properly. One of the primary irregularities in...
Long-patch Base Excision Repair01:02

Long-patch Base Excision Repair

Since the discovery of the two BER pathways, there has been a debate about how a cell chooses one pathway over the other and the factors determining this selection. Numerous in vitro experiments have pointed out multiple determinants for the sub-pathway selection. These are:
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...

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Optimization for Sequencing and Analysis of Degraded FFPE-RNA Samples
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Optimization for Sequencing and Analysis of Degraded FFPE-RNA Samples

Published on: June 8, 2020

RNA partial degradation problem: motivation, complexity, algorithm.

Jacek Blazewicz1, Marek Figlerowicz, Marta Kasprzak

  • 1Institute of Computing Science, Poznan University of Technology, Poznan, Poland.

Journal of Computational Biology : a Journal of Computational Molecular Cell Biology
|May 14, 2011
PubMed
Summary
This summary is machine-generated.

Researchers developed a new bioinformatics approach to understand RNA degradation. This method, the RNA Partial Degradation Problem (RNA PDP), reconstructs RNA molecules from degradation data, offering insights into RNA regulation.

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Area of Science:

  • Molecular Biology
  • Bioinformatics
  • Computational Biology

Background:

  • Recent studies reveal novel biological roles for RNA molecules.
  • Effective regulation of RNA accumulation is crucial for cellular processes.
  • RNA degradation mechanisms significantly influence RNA activity and function.

Purpose of the Study:

  • To develop a bioinformatics approach for analyzing RNA degradation.
  • To propose a new computational problem, the RNA Partial Degradation Problem (RNA PDP).
  • To create an algorithm for reconstructing RNA molecules from degradation data.

Main Methods:

  • Application of bioinformatics methods to study RNA degradation.
  • Formulation of the RNA Partial Degradation Problem (RNA PDP).
  • Development of an algorithm for RNA reconstruction based on biochemical degradation analysis.

Main Results:

  • Successful formulation of the RNA PDP.
  • Development of a novel algorithm for RNA molecule reconstruction.
  • Validation through biochemical experiments and computational tests.

Conclusions:

  • Bioinformatics offers a powerful approach to studying RNA degradation.
  • The RNA PDP and its algorithm provide a new tool for RNA research.
  • This work enhances understanding of RNA regulation and function.