Enzyme Network Importance and Phylogenetic Conservation
Author Information
Author(s): Liu Wei-chung, Lin Wen-hsien, Davis Andrew J, Jordán Ferenc, Yang Hsih-te, Hwang Ming-jing
Primary Institution: Institute of Biomedical Sciences, Academia Sinica
Hypothesis
The phylogenetic profile of enzymes is independent of their positional importance within the network.
Conclusion
The study shows that enzymes with high phylogenetic profiles tend to occupy more important topological positions in the enzyme network.
Supporting Evidence
- Enzyme phylogenetic profile correlates best with betweenness centrality.
- Enzymes that occur in many bacterial species tend to have high network importance.
- Closeness centrality reflects phylogenetic profile poorly.
Takeaway
This study looks at how important enzymes are in a network and whether they are found in many different bacteria. It finds that important enzymes are usually found in many species.
Methodology
An enzyme network was constructed from the KEGG database, and three network indices of topological importance were calculated.
Potential Biases
The representation of certain bacterial genera in the KEGG database may introduce bias into the phylogenetic profiles.
Limitations
The study's results may contain inaccuracies due to incomplete knowledge of metabolic pathways and the potential for undiscovered enzyme-enzyme relations.
Participant Demographics
The study analyzed enzymes from 288 bacterial species.
Statistical Information
P-Value
p ≈ 0
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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