Protein-Protein Interactions More Conserved Within Species Than Across Species
Author Information
Author(s): Mika Sven, Rost Burkhard
Primary Institution: Columbia University
Hypothesis
Are protein-protein interactions more conserved within species than across species?
Conclusion
The study found that protein-protein interactions are significantly more reliable within the same species compared to across different species.
Supporting Evidence
- Homology-based inferences of protein interactions were found to be accurate only at very high levels of sequence similarity.
- The identification of interacting partners through sequence similarity was significantly more reliable for protein pairs within the same organism than for pairs between species.
- Discrepancies between different datasets were large, even when using the same type of experiment on the same organism.
Takeaway
This study shows that proteins from the same species are more likely to interact with each other than proteins from different species, even if they are similar.
Methodology
The authors conducted a large-scale analysis of protein-protein interactions using various high-throughput methods and assessed the accuracy of homology-based inferences.
Potential Biases
The reliance on existing datasets may introduce biases due to varying experimental conditions and methodologies.
Limitations
The study acknowledges that current datasets of protein-protein interactions are incomplete and inconsistent.
Digital Object Identifier (DOI)
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