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Related Experiment Video

Updated: May 21, 2026

Habituation and Prepulse Inhibition of Acoustic Startle in Rodents

Habituation and Prepulse Inhibition of Acoustic Startle in Rodents

Published on: September 1, 2011

Don't make me mad, Bub!

Andrew W Murray¹

¹Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA. amurray@mcb.harvard.edu

Developmental Cell

|June 16, 2012

Summary

This summary is machine-generated.

The spindle checkpoint protein Bub1 has undergone numerous duplications and functional diversifications throughout eukaryotic evolution. This parallel evolution divided ancestral Bub1 functions between newly formed gene copies.

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Area of Science:

Cell Biology
Evolutionary Biology
Genetics

Background:

The spindle checkpoint is crucial for accurate chromosome segregation during cell division.
Bub1 is a key component of the spindle checkpoint machinery.
Understanding the evolutionary history of essential genes like Bub1 provides insights into genome evolution.

Discussion:

Suijkerbuijk et al. (2012) present evidence for extensive parallel evolution of the Bub1 gene.
The study suggests Bub1 has duplicated and diverged multiple times across eukaryotic lineages.
Functional divergence allowed duplicated Bub1 copies to specialize, potentially enhancing checkpoint efficiency or adaptability.

Key Insights:

Bub1's evolutionary trajectory is marked by recurrent gene duplication and functional specialization.
This pattern of parallel evolution highlights the dynamic nature of gene families in eukaryotes.
The diversification of Bub1 functions underscores the adaptability of fundamental cellular processes.

Outlook:

Further research can explore the specific functional roles of divergent Bub1 paralogs in different species.
Investigating the regulatory mechanisms underlying Bub1 duplication and divergence can reveal novel insights into genome plasticity.
Comparative genomic studies can illuminate the precise timing and mechanisms of Bub1 evolution across the tree of life.