Horizontal Gene Transfer in Octocorals
Author Information
Author(s): Jaret P. Bilewitch, Sandie M. Degnan
Primary Institution: University of Queensland
Hypothesis
The octocoral mtMutS gene originated from horizontal gene transfer from either an epsilonproteobacterium or a large DNA virus.
Conclusion
The octocoral mtMutS gene is active and codes for a protein that plays a role in DNA mismatch repair, suggesting a unique evolutionary origin.
Supporting Evidence
- The mtMutS gene has conserved amino acids and protein domains necessary for DNA mismatch repair.
- Phylogenetic analysis shows mtMutS is not of eukaryotic origin but closely related to bacterial and viral sequences.
- Gene expression analyses confirm that mtMutS is actively transcribed in octocorals.
Takeaway
Some corals have a special gene that helps fix mistakes in their DNA, and this gene came from a different type of organism, like a virus or bacteria.
Methodology
Phylogenetic analysis and gene expression studies were conducted to assess the origin and functionality of the mtMutS gene.
Limitations
The exact vector of horizontal gene transfer remains uncertain, and the study primarily focuses on octocorals without extensive comparisons to other taxa.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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