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Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick.  Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation.
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Updated: Sep 18, 2025

Analyzing and Building Nucleic Acid Structures with 3DNA
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Communication Pathway Analysis within Protein-Nucleic Acid Complexes.

Sneha Bheemireddy1, Roy González-Alemán2, Emmanuelle Bignon2

  • 1CNRS, Inria, LORIA, Université de Lorraine, F-54000 Nancy, France.

Journal of Chemical Theory and Computation
|June 24, 2025
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Summary
This summary is machine-generated.

ComPASS, a new computational method, reveals how macromolecules communicate via allosteric networks. It highlights the crucial, often overlooked, role of nucleic acids in these essential biological processes.

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Area of Science:

  • Structural Biology
  • Computational Biology
  • Biophysics

Background:

  • Inter-residue communication networks are fundamental to biological processes like catalysis and signaling.
  • Allostery, the energetic coupling of distant macromolecule regions, relies on these networks.
  • The role of nucleic acids in allosteric communication has been understudied.

Purpose of the Study:

  • To develop a computational method, ComPASS, for analyzing communication networks in protein-protein and protein-nucleic acid complexes.
  • To investigate the mechanisms of allosteric signal transmission in various macromolecular systems.
  • To address the gap in understanding nucleic acid contributions to allostery.

Main Methods:

  • Developed ComPASS, a large-scale computational method utilizing molecular dynamics (MD) simulation data.
  • Extracted inter-residue properties: dynamical correlations, interactions, and distances.
  • Constructed weighted communication networks representing dependencies among amino acids and nucleotides.

Main Results:

  • Uncovered distinct signal transmission mechanisms in diverse macromolecular systems.
  • Identified key mediating domains/regions in Cysteinyl-tRNA synthetase, LacI repressor, Bse634I, and liver X receptor.
  • Confirmed the role of H2A L1 loops in histone-nucleosome complex communication.

Conclusions:

  • ComPASS provides an integrated framework for studying macromolecular communication networks.
  • Advances understanding of conformational dynamics, especially in protein-nucleic acid complexes.
  • Highlights the significant, yet often overlooked, role of nucleic acids in allosteric regulation.