Genome Sequence of Treponema paraluiscuniculi and Its Loss of Infectivity to Humans
Author Information
Author(s): David Šmajs, Marie Zobaníková, Michal Strouhal, Darina Čejková, Shannon Dugan-Rocha, Petra Pospíšilová, Steven J. Norris, Tom Albert, Xiang Qin, Kym Hallsworth-Pepin, Christian Buhay, Donna M. Muzny, Lei Chen, Richard A. Gibbs, George M. Weinstock
Primary Institution: Masaryk University, Brno, Czech Republic
Hypothesis
The study investigates the genomic features of Treponema paraluiscuniculi and how its genome decay is associated with the loss of infectivity to humans.
Conclusion
The genome of Treponema paraluiscuniculi shows significant decay and a higher number of pseudogenes, indicating its adaptation to a rabbit host and loss of infectivity to humans.
Supporting Evidence
- The genome size of Treponema paraluiscuniculi Cuniculi A is 1,133,390 bp, which is smaller than that of Treponema pallidum.
- The study found 51 pseudogenes in the Cuniculi A genome, indicating significant genome decay.
- Statistical analysis revealed a high percentage of genes with frameshifts in virulence factors compared to other functional groups.
- Identical gene orders were observed between Cuniculi A and Nichols genomes despite differences in host specificity.
- Changes in genes involved in DNA replication and repair suggest accelerated evolution in Treponema paraluiscuniculi.
Takeaway
This study looks at the DNA of a bacteria that causes disease in rabbits but not in humans, showing that it has lost some important parts of its DNA that help it infect humans.
Methodology
The genome sequence was determined using high-throughput sequencing strategies and analyzed for genomic features and gene functions.
Limitations
The study primarily focuses on genomic analysis and may not fully address the functional implications of the identified genetic changes.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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