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Related Concept Videos

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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Studying the Cytoskeleton01:17

Studying the Cytoskeleton

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The cytoskeletal architecture can be studied using different microscopic and biochemical techniques. Electron microscopy was instrumental in discovering the cytoskeletal architecture around the 1960s, which allowed obtaining structural information at a high-resolution level. However, the sample preparation procedure often limits this ability in biological samples. Several protocols have been developed over the years to optimize sample preparation. In one of the protocols known as rotary...
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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.
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...
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Introduction to the Cytoskeleton01:33

Introduction to the Cytoskeleton

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Overview of the Cytoskeleton
The cytoskeleton is a network of protein filaments present within the cell, having three distinct filaments ̶   microfilaments, microtubules, and intermediate filaments. Each has characteristic features that distinguish them, including the dynamics of their assembly and disassembly, mechanical properties, polarity, and the type of molecular motors associated with them. Earlier, they were thought to be present only in eukaryotic cells; however, their...
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Adaptability of Cytoskeletal Filaments01:12

Adaptability of Cytoskeletal Filaments

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The cytoskeleton is a complex dynamic structure performing varied functions based on cellular requirements. The adaptability of the individual filaments in the cytoskeleton determines their ability to perform various functions within the cell. It can undergo rapid reorganization during processes like cell division or remain stable for several hours as in the interphase. The adaptability of these filaments depends on stringent regulatory mechanisms. The microfilament and microtubules of the...
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Generation of Straight or Branched Actin Filaments01:14

Generation of Straight or Branched Actin Filaments

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The straight or branched structure formation of actin filaments is controlled by nucleating proteins such as the formins and Arp2/3 complex. Formin-mediated assembly results in straight filaments, whereas Arp2/3 protein complex-mediated assembly results in branched actin filaments.
Arp2/3 Complex
Arp2/3 complex is a seven-subunit complex consisting of two proteins similar to actin- Arp2 and Arp3, and five other subunits that help keep Arp2 and Arp3 inactive. When required, the complex is...
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Updated: Mar 3, 2026

Folding and Characterization of a Bio-responsive Robot from DNA Origami
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Folding and Characterization of a Bio-responsive Robot from DNA Origami

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Developing artificial cytoskeletons using RNA origami-based nanotubes.

Tanvir Ahmed1, Kazi Tasnuva Alam1

  • 1Department of Pharmaceutical Sciences, School of Health and Life Sciences, North South University, Plot 15, Block B, Bashundhara R/A, Dhaka, 1229, Bangladesh.

Progress in Biophysics and Molecular Biology
|March 1, 2026
PubMed
Summary
This summary is machine-generated.

Researchers are engineering artificial cytoskeletons using RNA origami nanotubes to mimic cellular structures. This technology offers potential for nanotechnology and synthetic biology applications, advancing biomimetic networks.

Keywords:
Artificial cytoskeletonsNanotubesRNA origamiScaffold

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Production of Dynein and Kinesin Motor Ensembles on DNA Origami Nanostructures for Single Molecule Observation
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Area of Science:

  • Biotechnology
  • Nanotechnology
  • Synthetic Biology

Background:

  • The cytoskeleton is crucial for cellular structure, transport, and mechanical response.
  • Synthetic mimics of the cytoskeleton have applications in nanotechnology and therapeutics.
  • RNA origami offers a programmable scaffold for nanoscale architecture.

Purpose of the Study:

  • To review the engineering of artificial cytoskeletons using RNA origami-based nanotubes.
  • To explore RNA's advantages over DNA for biomimetic structures.
  • To discuss design strategies, control over nanotube properties, and potential applications.

Main Methods:

  • Review of current literature on RNA origami nanotubes.
  • Discussion of RNA folding, tertiary interactions, and cellular interfacing.
  • Exploration of design strategies for mimicking microtubules and actin filaments.
  • Analysis of methods for controlling nanotube length, stiffness, and organization.
  • Investigation of dynamic remodeling via RNA motifs and interactions.

Main Results:

  • RNA origami nanotubes can be designed to mimic cytoskeletal filaments.
  • RNA offers advantages like co-transcriptional folding and complex interactions.
  • Strategies exist to control nanotube properties and enable dynamic remodeling.
  • Potential applications include intracellular scaffolding, cargo transport, and synthetic cells.

Conclusions:

  • RNA origami provides a versatile toolkit for creating programmable, biomimetic cytoskeletal networks.
  • Challenges include in vivo stability and efficient delivery.
  • This field holds transformative potential for synthetic cell engineering.