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Related Experiment Video

Updated: Jul 16, 2026

Self-Assembly of Microtubule Tactoids

Self-Assembly of Microtubule Tactoids

Published on: June 23, 2022

TRIM5 alpha cytoplasmic bodies are highly dynamic structures.

Edward M Campbell¹, Mark P Dodding, Melvyn W Yap

¹Department of Cell and Molecular Biology, Northwestern University, Chicago, IL 60611-3008, USA.

Molecular Biology of the Cell

|March 30, 2007

Summary

Tripartite motif (TRIM)5 alpha forms dynamic cytoplasmic bodies that move along microtubules. These dynamic TRIM5 alpha bodies suggest a role in function or regulation, not static aggregation.

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Area of Science:

Virology
Cell Biology
Immunology

Background:

Tripartite motif (TRIM)5 alpha is a host restriction factor that inhibits retroviral infection.
TRIM5 alpha localizes to distinct cytoplasmic bodies, but their function is unknown.

Purpose of the Study:

To investigate the localization and dynamics of TRIM5 alpha cytoplasmic bodies.
To determine the role of these dynamic structures in TRIM5 alpha function.

Main Methods:

Utilized fluorescent fusion proteins and live cell microscopy.
Performed photobleaching and photoactivation analysis.

Main Results:

TRIM5 alpha cytoplasmic bodies are highly mobile, moving along microtubules.
Body morphology is dynamic, and TRIM5 alpha rapidly exchanges between bodies and the cytoplasm.
TRIM5 alpha cytoplasmic bodies are dynamic, not static aggregates.

Conclusions:

TRIM5 alpha cytoplasmic bodies are dynamic structures involved in TRIM5 alpha function or regulation.
These findings differentiate TRIM5 alpha bodies from static inclusion bodies.