ArticleNucleic acids research2022
Mutation and selection explain why many eukaryotic centromeric DNA sequences are often A + T rich.
Article in Nucleic acids research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Centromeres in budding yeasts are conserved in chromosomal location but not in structure.PLoS genetics · 2025Article
- CENP-A and centromere evolution in equids.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2025Review
- Centromeric and pericentric transcription and transcripts: their intricate relationships, regulation, and functions.Chromosoma · 2023Review
- Flexible Attachment and Detachment of Centromeres and Telomeres to and from Chromosomes.Biomolecules · 2023Review
- Robertsonian Fusion and Centromere Repositioning Contributed to the Formation of Satellite-free Centromeres During the Evolution of Zebras.Molecular biology and evolution · 2022Article
- Molecular Dynamics and Evolution of Centromeres in the Genus Equus.International journal of molecular sciences · 2022Review
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Authors and funding
6 authors.
Funding
Abstract
We have used chromosome engineering to replace native centromeric DNA with different test sequences at native centromeres in two different strains of the fission yeast Schizosaccharomyces pombe and have discovered that A + T rich DNA, whether synthetic or of bacterial origin, will function as a centromere in this species. Using genome size as a surrogate for the inverse of effective population size (Ne) we also show that the relative A + T content of centromeric DNA scales with Ne across 43 animal, fungal and yeast (Opisthokonta) species. This suggests that in most of these species the A + T content of the centromeric DNA is determined by a balance between selection and mutation. Combining the experimental results and the evolutionary analyses allows us to conclude that A + T rich DNA of almost any sequence will function as a centromere in most Opisthokonta species. The fact that many G/C to A/T substitutions are unlikely to be selected against may contribute to the rapid evolution of centromeric DNA. We also show that a neo-centromere sequence is not simply a weak version of native centromeric DNA and suggest that neo-centromeres require factors either for their propagation or establishment in addition to those required by native centromeres.
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