Horizontal Gene Transfer in Paulinella Chromatophora
Author Information
Author(s): Marin Birger, Nowack Eva CM, Glöckner Gernot, Melkonian Michael
Primary Institution: Universität zu Köln
Hypothesis
Did the horizontal gene transfer of the carboxysomal operon occur before or after the divergence of the chromatophore ancestor from the PS-clade?
Conclusion
The horizontal gene transfer of the carboxysomal operon occurred before the divergence of the chromatophore ancestor from the PS-clade.
Supporting Evidence
- The sequence of the complete carboxysomal operon of Paulinella was determined.
- Phylogenetic analyses recovered the Paulinella chromatophore as sister to the complete PS-clade.
- The γ-proteobacterium Nitrococcus mobilis was identified as the closest known relative to the donor of the carboxysomal operon.
Takeaway
Scientists studied a tiny organism called Paulinella that has a special part for photosynthesis. They found that it got some important genes from another type of bacteria a long time ago, which helped it survive.
Methodology
Phylogenetic analyses were conducted using almost complete rDNA operon sequences and RubisCO large subunit sequences.
Limitations
The study's conclusions are based on phylogenetic analyses, which may have limitations due to the quality and completeness of the sequence data.
Digital Object Identifier (DOI)
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