The Evolutionary Origin of Runx/CBFbeta Transcription Factors
Author Information
Author(s): Sullivan James C, Sher Daniel, Eisenstein Miriam, Shigesada Katsuya, Reitzel Adam M, Marlow Heather, Levanon Ditsa, Groner Yoram, Finnerty John R, Gat Uri
Primary Institution: Department of Biology, Boston University
Hypothesis
Did Runx and CBFbeta genes play a role in the evolution of nerve cell differentiation in early metazoans?
Conclusion
Runx and CBFbeta likely functioned together to regulate transcription in the common ancestor of all metazoans, and their structure has remained highly conserved.
Supporting Evidence
- Runx and CBFbeta genes were found in cnidarians and sponges, indicating their ancient origins.
- The structure of the Runx-CBFbeta-DNA complex is highly conserved across species.
- Expression studies showed that Runx and CBFbeta are predominantly expressed in the ectoderm of tentacles in adult Nematostella.
Takeaway
Scientists studied ancient genes in simple animals like sponges and jellyfish to understand how these genes help in making nerve cells, which are important for feeling and movement.
Methodology
The study involved computational methods to identify Runx and CBFbeta orthologs, phylogenetic analyses, comparative structural modeling, and expression studies.
Digital Object Identifier (DOI)
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