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Assembly of Cytoskeletal Filaments01:18

Assembly of Cytoskeletal Filaments

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Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate with other similar filaments to form rigid structures. Microfilaments, made of actin monomers, rely on actin-binding proteins to form bundles and create networks of individual actin filaments. Microtubules rely on microtubule-associated proteins (MAPs) to form sturdy cylindrical structures. However, the proteins involved in forming complex...
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Related Experiment Video

Updated: May 16, 2025

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
10:23

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles

Published on: May 8, 2015

11.6K

Possibilities and Limits of DNA-Enabled Programmable 2D Self-Assembly.

Nicholas Tjahjono1, Evgeni S Penev1, Boris I Yakobson1,2

  • 1Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States.

ACS Applied Materials & Interfaces
|May 5, 2025
PubMed
Summary

This study introduces a method for efficient DNA self-assembly, overcoming low yields in traditional methods. Optimized DNA sequences and controlled conditions enable precise nanoscale material construction.

Keywords:
DNA sequence designDNA-functionalized 2D materialsaperiodic nanostructurescoarse-grained molecular dynamicserror-free DNA-mediated assemblymisbindingprogrammable self-assembly

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Last Updated: May 16, 2025

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biotechnology

Background:

  • Programmable self-assembly offers advanced material synthesis.
  • DNA-based self-assembly often suffers from low yields and complex procedures.

Purpose of the Study:

  • To identify optimal conditions for one-pot self-assembly of 2D tiles.
  • To design DNA sequences for high-accuracy self-assembly.
  • To explore applications in nanotechnology and energy storage.

Main Methods:

  • Coarse-grained molecular dynamics simulations.
  • Analysis of DNA sequence misbinding energies.
  • Design of optimized DNA sequence ensembles.

Main Results:

  • Identified critical temperature and misbinding strength ranges for successful assembly.
  • Determined that strongest misbinding interactions dictate assembly success.
  • Developed strategies for minimizing rare, strong misbinding events.

Conclusions:

  • Optimized DNA sequences and conditions enable high-yield, accurate nanoscale self-assembly.
  • This approach facilitates the creation of complex, multicomponent materials.
  • Potential applications include DNA-functionalized materials for electronics and energy storage.