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Related Experiment Video

Updated: May 20, 2026

Motility of Single Molecules and Clusters of Bi-Directional Kinesin-5 Cin8 Purified from S. cerevisiae Cells

Motility of Single Molecules and Clusters of Bi-Directional Kinesin-5 Cin8 Purified from S. cerevisiae Cells

Published on: February 2, 2022

Kinesin-8s hang on by a tail.

Lesley N Weaver, Claire Walczak

Bioarchitecture

|July 4, 2012

Summary

Kinesin-8 and Kinesin-13 motor proteins regulate cell division by destabilizing microtubules. A newly found microtubule-binding domain in Kinesin-8 is crucial for its role in chromosome positioning and spindle dynamics.

Area of Science:

Cell Biology
Molecular Biology
Genetics

Background:

Accurate segregation of genetic material is vital for cell reproduction and organism survival.
The mitotic spindle, composed of microtubules (MTs) and associated proteins, orchestrates chromosome segregation during cell division.
Kinesin motor proteins, including Kinesin-8 and Kinesin-13 families, are essential for organizing the spindle, transporting cargo, and regulating MT dynamics.

Purpose of the Study:

To investigate the mechanisms by which Kinesin-8 and Kinesin-13 families destabilize microtubules.
To understand the functional significance of a newly identified MT binding domain in Kinesin-8.

Main Methods:

The study likely involved biochemical assays to analyze microtubule-binding and destabilization activities.

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Preparation of Segmented Microtubules to Study Motions Driven by the Disassembling Microtubule Ends

Published on: March 15, 2014

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Last Updated: May 20, 2026

Motility of Single Molecules and Clusters of Bi-Directional Kinesin-5 Cin8 Purified from S. cerevisiae Cells

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Published on: February 2, 2022

Assembling Molecular Shuttles Powered by Reversibly Attached Kinesins

Assembling Molecular Shuttles Powered by Reversibly Attached Kinesins

Published on: January 26, 2019

Preparation of Segmented Microtubules to Study Motions Driven by the Disassembling Microtubule Ends

Preparation of Segmented Microtubules to Study Motions Driven by the Disassembling Microtubule Ends

Published on: March 15, 2014

In vivo experiments using microscopy and genetic manipulation were probably employed to assess spindle morphology and chromosome positioning.

Main Results:

Both Kinesin-8 and Kinesin-13 families exhibit microtubule destabilizing activity, though their precise mechanisms remain under investigation.
A novel microtubule-binding domain located in the tail region of Kinesin-8 was identified.
This additional domain is essential for Kinesin-8's function in regulating MT dynamics and ensuring proper chromosome positioning.

Conclusions:

Kinesin-8 and Kinesin-13 proteins play critical roles in mitotic spindle organization and chromosome segregation through microtubule destabilization.
The newly discovered MT binding domain in Kinesin-8 provides new insights into its mechanism of action and its importance in cell division.