- Lee, UnJin;
- Arsala, Deanna;
- Xia, Shengqian;
- Li, Cong;
- Ali, Mujahid;
- Svetec, Nicolas;
- Langer, Christopher;
- Sobreira, Débora;
- Eres, Ittai;
- Sosa, Dylan;
- Chen, Jianhai;
- Zhang, Li;
- Reilly, Patrick;
- Guzzetta, Alexander;
- Emerson, James;
- Andolfatto, Peter;
- Zhou, Qi;
- Zhao, Li;
- Long, Manyuan
Previous evolutionary models of duplicate gene evolution have overlooked the pivotal role of genome architecture. Here, we show that proximity-based regulatory recruitment by distally duplicated genes is an efficient mechanism for modulating tissue-specific production of preexisting proteins. By leveraging genomic asymmetries, we performed a coexpression analysis on Drosophila melanogaster tissue data to show the generality of enhancer capture-divergence (ECD) as a significant evolutionary driver of asymmetric, distally duplicated genes. We use the recently evolved gene HP6/Umbrea as an example of the ECD process. By assaying genome-wide chromosomal conformations in multiple Drosophila species, we show that HP6/Umbrea was inserted near a preexisting, long-distance three-dimensional genomic interaction. We then use this data to identify a newly found enhancer (FLEE1), buried within the coding region of the highly conserved, essential gene MFS18, that likely neofunctionalized HP6/Umbrea. Last, we demonstrate ancestral transcriptional coregulation of HP6/Umbreas future insertion site, illustrating how enhancer capture provides a highly evolvable, one-step solution to Ohnos dilemma.