A genome-wide survey of changes in protein evolutionary rates across four closely related species of <Emphasis Type="Italic">Saccharomyces</Emphasis> sensu stricto group |
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Authors: | Yoshihiro Kawahara Tadashi Imanishi |
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Institution: | (1) Integrated Database Group, Biological Information Research Center, National Institute of Advanced Industrial Science and Technology, 2-42 Aomi, Koto-ku, Tokyo 135-0064, Japan;(2) Department of Biological Sciences, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji-shi, Tokyo 192-0397, Japan |
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Abstract: | Background Changes in protein evolutionary rates among lineages have been frequently observed during periods of notable phenotypic evolution.
It is also known that, following gene duplication and loss, the protein evolutionary rates of genes involved in such events
changed because of changes in functional constraints acting on the genes. However, in the evolution of closely related species,
excluding the aforementioned situations, the frequency of changes in protein evolutionary rates is still not clear at the
genome-wide level. Here we examine the constancy of protein evolutionary rates in the evolution of four closely related species
of the Saccharomyces sensu stricto group (S. cerevisiae, S. paradoxus, S. mikatae and S. bayanus). |
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