Journal
CHROMOSOME RESEARCH
Volume 26, Issue 1-2, Pages 5-23Publisher
SPRINGER
DOI: 10.1007/s10577-017-9569-5
Keywords
Centromeric retroelement; Satellite; Transposable element; TE; Genome defense; Chromosome evolution; Conflict
Funding
- National Science Foundation [1613806]
- Div Of Molecular and Cellular Bioscience
- Direct For Biological Sciences [1613806] Funding Source: National Science Foundation
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Although it was nearly 70 years ago when transposable elements (TEs) were first discovered jumping from one genomic location to another, TEs are now recognized as contributors to genomic innovations as well as genome instability across a wide variety of species. In this review, we illustrate the ways in which active TEs, specifically retroelements, can create novel chromosome rearrangements and impact gene expression, leading to disease in some cases and species-specific diversity in others. We explore the ways in which eukaryotic genomes have evolved defense mechanisms to temper TE activity and the ways in which TEs continue to influence genome structure despite being rendered transpositionally inactive. Finally, we focus on the role of TEs in the establishment, maintenance, and stabilization of critical, yet rapidly evolving, chromosome features: eukaryotic centromeres. Across centromeres, specific types of TEs participate in genomic conflict, a balancing act wherein they are actively inserting into centromeric domains yet are harnessed for the recruitment of centromeric histones and potentially new centromere formation.
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