Preservation of Genes Involved in Sterol Metabolism in Cholesterol Auxotrophs
Author Information
Author(s): Vinci Giovanna, Xia Xuhua, Veitia Reiner A.
Primary Institution: Institut Cochin, Département de Génétique et Développement, Inserm, U567, CNRS, UMR 8104, Université Paris 5, Faculté de Médecine Paris Descartes, UM 3, Paris, France
Hypothesis
Are the genes involved in sterol metabolism preserved in organisms that cannot synthesize cholesterol?
Conclusion
The study found that certain genes related to sterol metabolism are preserved in Drosophila melanogaster and Caenorhabditis elegans, despite these organisms being unable to synthesize cholesterol.
Supporting Evidence
- The genes related to sterol metabolism are still under selective pressure in Drosophila and C. elegans.
- Microarray data showed strong expressional correlation between ERG24 and ERG25 in Drosophila.
- Despite being unable to synthesize cholesterol, these organisms retain the genes involved in its metabolism.
Takeaway
Some animals can't make cholesterol, but they still have the genes for it, which might be doing other important jobs.
Methodology
The researchers used BLASTp to search for orthologs of ERG genes in C. elegans and D. melanogaster.
Limitations
The study primarily focused on a limited number of genes and did not explore all potential functions of the preserved genes.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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