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Protein-protein Interfaces

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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...
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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 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 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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Protein-RNA interactions: structural biology and computational modeling techniques.

Susan Jones1

  • 1Information and Computational Science Group, The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, UK. sue.jones@hutton.ac.uk.

Biophysical Reviews
|May 17, 2017
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Summary

This review explores structural data and computational methods for understanding protein-RNA interactions, crucial for cellular functions like gene regulation and RNA metabolism.

Keywords:
Computational modelingCryo-electron microscopyNuclear magnetic resonanceProtein–RNA complexesRNA-binding predictionRNA-binding proteinsStructural biologyX-ray crystallography

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Area of Science:

  • Structural Biology
  • Computational Biology
  • Molecular Biophysics

Background:

  • RNA-binding proteins (RBPs) are essential for diverse cellular processes, including RNA metabolism, translation, DNA repair, and gene regulation.
  • Understanding RBP-RNA interactions is key to deciphering these cellular functions.
  • Significant progress has been made through structural determination and computational modeling.

Purpose of the Study:

  • To provide an overview of available structural data for protein-RNA complexes.
  • To discuss technical challenges in solving these structures.
  • To review computational modeling techniques for analyzing protein-RNA interactions.

Main Methods:

  • Focuses on three primary techniques for atomic-resolution structure determination: X-ray crystallography, solution Nuclear Magnetic Resonance (NMR), and cryo-electron microscopy (cryo-EM).
  • Details computational modeling approaches including prediction of RNA-binding sites, protein-RNA docking, and molecular dynamics simulations.

Main Results:

  • Summarizes the current landscape of structural data for protein-RNA complexes.
  • Highlights the technical hurdles and advancements in structural biology for these systems.
  • Outlines the utility of computational methods in complementing structural data.

Conclusions:

  • Emphasizes the synergy between experimental structural data and computational modeling for advancing the field.
  • Suggests future research directions in understanding protein-RNA complex structures and functions.