Highways of gene sharing in prokaryotes.
نویسندگان
چکیده
The extent to which lateral genetic transfer has shaped microbial genomes has major implications for the emergence of community structures. We have performed a rigorous phylogenetic analysis of >220,000 proteins from genomes of 144 prokaryotes to determine the contribution of gene sharing to current prokaryotic diversity, and to identify "highways" of sharing between lineages. The inferred relationships suggest a pattern of inheritance that is largely vertical, but with notable exceptions among closely related taxa, and among distantly related organisms that live in similar environments.
منابع مشابه
Systematic inference of highways of horizontal gene transfer in prokaryotes
MOTIVATION Horizontal gene transfer (HGT) plays a crucial role in the evolution of prokaryotic species. Typically, no more than a few genes are horizontally transferred between any two species. However, several studies identified pairs of species (or linages) between which many different genes were horizontally transferred. Such a pair is said to be linked by a highway of gene sharing. Inferrin...
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عنوان ژورنال:
- Proceedings of the National Academy of Sciences of the United States of America
دوره 102 40 شماره
صفحات -
تاریخ انتشار 2005