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Recent Positive Selection in Genes of the Mammalian Epidermal Differentiation Complex Locus

Overview of attention for article published in Frontiers in Genetics, January 2017
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Title
Recent Positive Selection in Genes of the Mammalian Epidermal Differentiation Complex Locus
Published in
Frontiers in Genetics, January 2017
DOI 10.3389/fgene.2016.00227
Pubmed ID
Authors

Zane A. Goodwin, Cristina de Guzman Strong

Abstract

The epidermal differentiation complex (EDC) is the most rapidly evolving locus in the human genome compared to that of the chimpanzee. Yet the EDC genes that are undergoing positive selection across mammals and in humans are not known. We sought to identify the positively selected genetic variants and determine the evolutionary events of the EDC using mammalian-wide and clade-specific branch- and branch-site likelihood ratio tests and a genetic algorithm (GA) branch test. Significant non-synonymous substitutions were found in filaggrin, SPRR4, LELP1, and S100A2 genes across 14 mammals. By contrast, we identified recent positive selection in SPRR4 in primates. Additionally, the GA branch test discovered lineage-specific evolution for distinct EDC genes occurring in each of the nodes in the 14-mammal phylogenetic tree. Multiple instances of positive selection for FLG, TCHHL1, SPRR4, LELP1, and S100A2 were noted among the primate branch nodes. Branch-site likelihood ratio tests further revealed positive selection in specific sites in SPRR4, LELP1, filaggrin, and repetin across 14 mammals. However, in addition to continuous evolution of SPRR4, site-specific positive selection was also found in S100A11, KPRP, SPRR1A, S100A7L2, and S100A3 in primates and filaggrin, filaggrin2, and S100A8 in great apes. Very recent human positive selection was identified in the filaggrin2 L41 site that was present in Neanderthal. Together, our results identifying recent positive selection in distinct EDC genes reveal an underappreciated evolution of epidermal skin barrier function in primates and humans.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 21 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 21 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 4 19%
Student > Master 4 19%
Researcher 3 14%
Student > Doctoral Student 2 10%
Other 1 5%
Other 0 0%
Unknown 7 33%
Readers by discipline Count As %
Agricultural and Biological Sciences 8 38%
Medicine and Dentistry 2 10%
Biochemistry, Genetics and Molecular Biology 1 5%
Arts and Humanities 1 5%
Social Sciences 1 5%
Other 1 5%
Unknown 7 33%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 January 2017.
All research outputs
#18,510,888
of 22,931,367 outputs
Outputs from Frontiers in Genetics
#7,083
of 11,961 outputs
Outputs of similar age
#311,589
of 421,506 outputs
Outputs of similar age from Frontiers in Genetics
#27
of 37 outputs
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