Studying the Origins of Microbial ORFans
Author Information
Author(s): Yin Yanbin, Fischer Daniel
Primary Institution: University at Buffalo
Hypothesis
Are microbial ORFans acquired through lateral transfer from viruses?
Conclusion
The evidence for the viral origin of most microbial ORFans is currently weak, suggesting that other mechanisms may explain their presence.
Supporting Evidence
- Only 2.8% of microbial ORFans have detectable homologs in viruses.
- The percentage of non-ORFans with detectable homologs in viruses is 7.9%.
- Only 22 out of 277 genomes had a higher percentage of ORFans with viral homologs than non-ORFans.
Takeaway
Scientists looked at tiny genes called ORFans to see if they came from viruses. They found that very few of them actually matched with viral genes.
Methodology
The study involved genome-wide searches of ORFans against a public virus protein database using BLASTP.
Potential Biases
The evidence may be skewed due to the limited sampling of viral sequences.
Limitations
The current viral database may be biased towards certain microbial clades, affecting the results.
Participant Demographics
The study analyzed 277 microbial genomes and 1456 viral genomes.
Statistical Information
P-Value
2.2e-16
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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