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- Title
Rex Retroelements and Teleost Genomes: An Overview.
- Authors
Carducci, Federica; Barucca, Marco; Canapa, Adriana; Biscotti, Maria Assunta
- Abstract
Repetitive DNA is an intriguing portion of the genome still not completely discovered and shows a high variability in terms of sequence, genomic organization, and evolutionary mode. On the basis of the genomic organization, it includes satellite DNAs, which are organized as long arrays of head-to-tail linked repeats, and transposable elements, which are dispersed throughout the genome. These repeated elements represent a considerable fraction of vertebrate genomes contributing significantly in species evolution. In this review, we focus our attention on Rex1, Rex3 and Rex6, three elements specific of teleost genomes. We report an overview of data available on these retroelements highlighting their significative impact in chromatin and heterochromatin organization, in the differentiation of sex chromosomes, in the formation of supernumerary chromosomes, and in karyotype evolution in teleosts.
- Subjects
GENOMES; OSTEICHTHYES; SEX chromosomes; GENETICS; FISHES
- Publication
International Journal of Molecular Sciences, 2018, Vol 19, Issue 11, p3653
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms19113653