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Neanderthal ancestry drives evolution of lipid catabolism in contemporary Europeans
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Neanderthal ancestry drives evolution of lipid catabolism in contemporary Europeans
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Journal Article
Neanderthal ancestry drives evolution of lipid catabolism in contemporary Europeans
2014
Overview
Although Neanderthals are extinct, fragments of their genomes persist in contemporary humans. Here we show that while the genome-wide frequency of Neanderthal-like sites is approximately constant across all contemporary out-of-Africa populations, genes involved in lipid catabolism contain more than threefold excess of such sites in contemporary humans of European descent. Evolutionally, these genes show significant association with signatures of recent positive selection in the contemporary European, but not Asian or African populations. Functionally, the excess of Neanderthal-like sites in lipid catabolism genes can be linked with a greater divergence of lipid concentrations and enzyme expression levels within this pathway, seen in contemporary Europeans, but not in the other populations. We conclude that sequence variants that evolved in Neanderthals may have given a selective advantage to anatomically modern humans that settled in the same geographical areas.
Modern human genomes contain Neanderthal sequences, but it is unclear whether these were selected. Here, Khrameeva
et al.
show that Neanderthal sequences associated with lipid catabolism are three times more frequent in Europe, suggesting that these sequences might have been beneficial to Europeans.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Pub. Group
Subject
/ 38/91
/ 82/58
/ Animals
/ European Continental Ancestry Group - classification
/ European Continental Ancestry Group - genetics
/ European Continental Ancestry Group - history
/ Genome
/ Humanities and Social Sciences
/ Humans
/ Neanderthals - classification
/ Pan troglodytes - metabolism
/ Science
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