Selective sweep on human amylase genes postdates the split with Neanderthals

Humans have more copies of amylase genes than other primates. It is still poorly understood, however, when the copy number expansion occurred and whether its spread was enhanced by selection. Here we assess amylase copy numbers in a global sample of 480 high coverage genomes and find that regions fl...

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Hauptverfasser: Inchley, Charlotte E. (VerfasserIn) , Larbey, Cynthia D. A. (VerfasserIn) , Shwan, Nzar A. A. (VerfasserIn) , Pagani, Luca (VerfasserIn) , Saag, Lauri (VerfasserIn) , Antão, Tiago (VerfasserIn) , Jacobs, Guy (VerfasserIn) , Hudjashov, Georgi (VerfasserIn) , Metspalu, Ene (VerfasserIn) , Mitt, Mario (VerfasserIn) , Eichstaedt, Christina (VerfasserIn) , Malyarchuk, Boris (VerfasserIn) , Derenko, Miroslava (VerfasserIn) , Wee, Joseph (VerfasserIn) , Abdullah, Syafiq (VerfasserIn) , Ricaut, François-Xavier (VerfasserIn) , Mormina, Maru (VerfasserIn) , Mägi, Reedik (VerfasserIn) , Villems, Richard (VerfasserIn) , Metspalu, Mait (VerfasserIn) , Jones, Martin K. (VerfasserIn) , Armour, John A. L. (VerfasserIn) , Kivisild, Toomas (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 17 November 2016
In: Scientific reports
Year: 2016, Jahrgang: 6
ISSN:2045-2322
DOI:10.1038/srep37198
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1038/srep37198
Verlag, lizenzpflichtig, Volltext: https://www.nature.com/articles/srep37198
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Verfasserangaben:Charlotte E. Inchley, Cynthia D.A. Larbey, Nzar A.A. Shwan, Luca Pagani, Lauri Saag, Tiago Antão, Guy Jacobs, Georgi Hudjashov, Ene Metspalu, Mario Mitt, Christina A. Eichstaedt, Boris Malyarchuk, Miroslava Derenko, Joseph Wee, Syafiq Abdullah, François-Xavier Ricaut, Maru Mormina, Reedik Mägi, Richard Villems, Mait Metspalu, Martin K. Jones, John A.L. Armour & Toomas Kivisild

MARC

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520 |a Humans have more copies of amylase genes than other primates. It is still poorly understood, however, when the copy number expansion occurred and whether its spread was enhanced by selection. Here we assess amylase copy numbers in a global sample of 480 high coverage genomes and find that regions flanking the amylase locus show notable depression of genetic diversity both in African and non-African populations. Analysis of genetic variation in these regions supports the model of an early selective sweep in the human lineage after the split of humans from Neanderthals which led to the fixation of multiple copies of AMY1 in place of a single copy. We find evidence of multiple secondary losses of copy number with the highest frequency (52%) of a deletion of AMY2A and associated low copy number of AMY1 in Northeast Siberian populations whose diet has been low in starch content. 
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