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Related Concept Videos

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.
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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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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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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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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.
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Probing RNA Structure with Dimethyl Sulfate Mutational Profiling with Sequencing In Vitro and in Cells
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Small Molecule-Based Pattern Recognition To Classify RNA Structure.

Christopher S Eubanks1, Jordan E Forte1, Gary J Kapral1

  • 1Department of Chemistry, Duke University , Durham, North Carolina 27708, United States.

Journal of the American Chemical Society
|December 23, 2016
PubMed
Summary
This summary is machine-generated.

Aminoglycosides can classify RNA structures by analyzing their binding patterns. This method accurately predicts RNA secondary structures and reveals key factors in molecular recognition.

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Area of Science:

  • Biochemistry
  • Structural Biology
  • Molecular Biology

Background:

  • Determining three-dimensional RNA structures is challenging.
  • Understanding RNA secondary structure's role in conformation is limited.
  • Guiding principles for small molecule:RNA recognition are not well-established.

Purpose of the Study:

  • To develop a method for classifying RNA secondary structure motifs.
  • To investigate aminoglycoside binding as a means for RNA classification.
  • To identify factors governing small molecule:RNA recognition.

Main Methods:

  • Utilized principal component analysis (PCA) to classify five canonical RNA secondary structure motifs.
  • Employed aminoglycosides as receptors and benzofuranyluridine-labeled RNA as analytes.
  • Incorporated exhaustively guanidinylated aminoglycosides to enhance predictive ability.

Main Results:

  • Achieved 100% predictive ability for the RNA training set.
  • Validated PCA using biologically relevant constructs, including HIV-1 TAR RNA.
  • Identified nucleotide-specific classification of secondary structure motifs.
  • Revealed trends in aminoglycoside:RNA recognition, emphasizing shape, size, and sequence discrimination.

Conclusions:

  • Developed a novel approach for classifying RNA structure based on molecular recognition.
  • Demonstrated that RNA topology is crucial for molecular recognition, alongside sequence.
  • Provided insights into aminoglycoside:RNA interactions for drug discovery and RNA targeting.