New insights from hemichordate genomes: prebilaterian origin and parallel modifications in the paired domain of the Pax gene eyegone.

Abstract excerpt

The evolutionary origin of the Drosophila Pax transcription factor gene eyegone (eyg) has long been enigmatic owing to the failure in detecting orthologs in other species and the unusual N-terminal truncation of the DNA-binding paired domain (PD). Based on the discovery of eyg orthologs in representatives of hemichordate phyla, we show that the origin of eyg predated metazoan diversification and that the PD...

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