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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...
Protein-protein Interfaces02:04

Protein-protein Interfaces

Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a polypeptide...
Conserved Binding Sites01:49

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Protein Networks02:26

Protein Networks

An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
Protein Organization01:24

Protein Organization

Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence.
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...

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Related Experiment Video

Updated: Jul 17, 2026

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
09:04

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids

Published on: September 21, 2017

Protein-RNA interactions: exploring binding patterns with a three-dimensional superposition analysis of high

N Morozova1, J Allers, J Myers

  • 1Department of Biochemistry and Cell Biology, Rice University 6100 Main Street, Houston, TX 77005, USA.

Bioinformatics (Oxford, England)
|September 13, 2006
PubMed
Summary

Protein-RNA interactions utilize unique base shapes and hydrogen-bonding patterns for specific recognition, differing significantly from DNA interactions. This allows for precise binding even with few contacts.

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Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
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Area of Science:

  • Structural Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Protein-RNA interactions are crucial for RNA processing, gene expression, and viral replication.
  • RNA structures are diverse, suggesting distinct recognition mechanisms compared to DNA.

Purpose of the Study:

  • To investigate the structural and chemical basis of RNA base recognition by proteins.
  • To understand how proteins distinguish between different RNA nucleosides.

Main Methods:

  • Analysis of atomic coordinates from 41 protein-RNA complexes.
  • Construction of composite nucleoside binding pockets using 3D superpositions.
  • Examination of van der Waals, hydrogen-bonding, stacking, and non-polar interactions.

Main Results:

  • RNA recognition often occurs in non-canonical structures, utilizing diverse geometries and base shapes.
  • Protein-RNA binding pockets are glove-like but vary in size, shape, and non-polar patterns for different bases.
  • Adenine is distinguished from guanine by binding pocket dimensions and steric exclusion of guanine's N2 amino group.
  • Specific base interactions can be achieved with as few as two protein-RNA contacts.

Conclusions:

  • Protein-RNA recognition relies on specific geometric and chemical complementarity, leveraging unique base shapes and hydrogen-bonding.
  • The findings provide insights into the molecular mechanisms underlying specific RNA recognition by proteins.