He X and Zhang J (2006) Toward a molecular understanding of pleiotropy. Genetics 173(4):1885-91
Abstract: Pleiotropy refers to the observation of a single gene influencing multiple phenotypic traits. Although pleiotropy is a common phenomenon with broad implications, its molecular basis is unclear. Using functional genomic data of the yeast Saccharomyces cerevisiae, we here show that compared with genes of low pleiotropy, highly pleiotropic genes participate in more biological processes, through distribution of the protein products in more cellular components and involvement in more protein-protein interactions. However, the two groups of genes do not differ in the number of molecular functions or the number of protein domains per gene. Thus, pleiotropy is generally caused by a single molecular function involved in multiple biological processes. We also provide genome-wide evidence that the evolutionary conservation of genes and gene sequences positively correlates with the level of gene pleiotropy.
|Status: Published||Type: Journal Article||PubMed ID: 16702416|
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