The DOI matches its Crossref record; 54 of the 54 references it cites were found in a registry or an index.
Evidence That Mutation Is Universally Biased towards AT in Bacteria
Open accessAbstract
Mutation is the engine that drives evolution and adaptation forward in that it generates the variation on which natural selection acts. Mutation is a random process that nevertheless occurs according to certain biases. Elucidating mutational biases and the way they vary across species and within genomes is crucial to understanding evolution and adaptation. Here we demonstrate that clonal pathogens that evolve under severely relaxed selection are uniquely suitable for studying mutational biases in bacteria. We estimate mutational patterns using sequence datasets from five such clonal pathogens belonging to four diverse bacterial clades that span most of the range of genomic nucleotide content. We demonstrate that across different types of sites and in all four clades mutation is consistently biased towards AT. This is true even in clades that have high genomic GC content. In all studied cases the mutational bias towards AT is primarily due to the high rate of C/G to T/A transitions. These results suggest that bacterial mutational biases are far less variable than previously thought. They further demonstrate that variation in nucleotide content cannot stem entirely from variation in mutational biases and that natural selection and/or a natural selection-like process such as biased gene conversion strongly affect nucleotide content.
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BackgroundA hydrophobic ratchet entrenches molecular complexes
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A positive correlation between GC content and growth temperature in prokaryotes
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Metadata
- Authors
- Hershberg, R., & Petrov, D. A.
- Venue
- PLoS Genetics
- Publisher
- Public Library of Science (PLoS)
- Published
- 2010-09-09
- Volume
- 6
- Issue
- 9
- Pages
- e1001115
- ISSN
- 1553-7390 (ISSN-L)
- 1553-7404
- OpenAlex
- W2115622704
- Cited by
- 490
- References
- 54
- FWCI
- 14.25
- Type
- journal article
- Language
- en
- Open access
- gold
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