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Satellite DNAs—From Localized to Highly Dispersed Genome Components

Šatović-Vukšić, Eva; Plohl, Miroslav (2023) Satellite DNAs—From Localized to Highly Dispersed Genome Components. Genes, 14 (3). ISSN 2073-4425

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According to the established classical view, satellite DNAs are defined as abundant non- coding DNA sequences repeated in tandem that build long arrays located in heterochromatin. Advances in sequencing methodologies and development of specialized bioinformatics tools enabled defining a collection of all repetitive DNAs and satellite DNAs in a genome, the repeatome and the satellitome, respectively, as well as their reliable annotation on sequenced genomes. Supported by various non-model species included in recent studies, the patterns of satellite DNAs and satellitomes as a whole showed much more diversity and complexity than initially thought. Differences are not only in number and abundance of satellite DNAs but also in their distribution across the genome, array length, interspersion patterns, association with transposable elements, localization in heterochromatin and/or in euchromatin. In this review, we compare characteristic organizational features of satellite DNAs and satellitomes across different animal and plant species in order to summarize organizational forms and evolutionary processes that may lead to satellitomes’ diversity and revisit some basic notions regarding repetitive DNA landscapes in genomes.

Item Type: Article
Uncontrolled Keywords: satellite DNA ; repetitive DNA ; transposable element ; satellitome ; heterochromatin ; euchromatin
Subjects: NATURAL SCIENCES > Biology
Divisions: Division of Molecular Biology
Project titleProject leaderProject codeProject type
Rasvjetljavanje evolucije satelitnih DNA visokoprotočnim analizama satelitoma srodnih vrstaMravinac, BrankicaIP-2019-04-5522HRZZ
Depositing User: Eva Šatović Vukšić
Date Deposited: 12 Apr 2023 13:37
DOI: 10.3390/genes14030742

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