Cited by 920Genomics and Phylogenetic StudiesRNA and protein synthesis mechanismsEvolution and Genetic Dynamics

A likelihood approach for comparing synonymous and nonsynonymous nucleotide substitution rates, with application to the chloroplast genome.

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Spencer V. Muse, Brandon S. Gaut·1994·Molecular Biology and Evolution

Abstract

A model of DNA sequence evolution applicable to coding regions is presented. This represents the first evolutionary model that accounts for dependencies among nucleotides within a codon. The model uses the codon, as opposed to the nucleotide, as the unit of evolution, and is parameterized in terms of synonymous and nonsynonymous nucleotide substitution rates. One of the model's advantages over those used in methods for estimating synonymous and nonsynonymous substitution rates is that it completely corrects for multiple hits at a codon, rather than taking a parsimony approach and considering only pathways of minimum change between homologous codons. Likelihood-ratio versions of the relative-rate test are constructed and applied to data from the complete chloroplast DNA sequences of Oryza sativa, Nicotiana tabacum, and Marchantia polymorpha. Results of these tests confirm previous findings that substitution rates in the chloroplast genome are subject to both lineage-specific and locus-specific effects. Additionally, the new tests suggest tha the rate heterogeneity is due primarily to differences in nonsynonymous substitution rates. Simulations help confirm previous suggestions that silent sites are saturated, leaving no evidence of heterogeneity in synonymous substitution rates.

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  • The first codon models estimated parameters representing an averaged nonsynonymous-synonymous rate ratio.

    “The first codon models estimated parameters representing an averaged nonsynonymous-synonymous rate ratio.”

    From RELAX: Detecting Relaxed Selection in a Phylogenetic Framework (2015) · cites this paper as Muse and Gaut 1994

    The Probabilistic Model for Codon Evolution section says the model’s parameters determine synonymous and nonsynonymous substitution rates. But Parameter Interpretation describes the estimated parameters as products of instantaneous rates and time, not as an averaged nonsynonymous-to-synonymous rate ratio; its averaging over codons concerns expected substitution counts. (LLM, conf=0.82)

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Research works printed but not linked: 8

  1. BOUSQUET, J., S. H. STRAUSS, A. H. DOERKESEN, and R. A. PRICE. 1992. Extensive variation in evolutionary rate of rbcL gene sequences among seed plants. Proc. Natl. Acad. Sci. USA 89:7844-7848.
  2. DAHLGREEN, R. M. T., 1~. T. CLIFFORD, and P. F. YEO. 1985. The families of the Monocotyledons: structure, evolution, and taxonomy. Springer, Berlin.
  3. JUKES, T. H., and C. R. CANTOR. 1969. Evolution of protein molecules. Pp. 2 1-132 in H. M. Munro, ed. Mammalian protein metabolism. Academic Press, New York.
  4. KARLIN, S., and H. M. TAYLOR. 1975. A first course in sto- chastic processes, 2d ed. Academic Press, New York.
  5. PRESS, W. H., S. A. TEUKOLSKY, W. T. VETTERLING, and B. P. FLANNERY. 1992. Numerical recipes, 2d ed. Cam- bridge University Press, Cambridge.
  6. WOLFE, K. H., M. GOUY, Y.-W. YANG, P. M. SHARP, and W.-H. LI. 1989. Date of the monocot-dicot divergence es- timated from chloroplast DNA sequence data. Proc. Natl. Acad. Sci. USA 86:6201-6205.
  7. WOLFE, K. H., W.-H. LI, and P. M. SHARP. 1987. Rates of nucleotide substitution vary greatly among plant mito- chondrial, chloroplast, and nuclear DNAs. Proc. Natl. Acad. Sci. USA 84:9054-9058.
  8. WU, C.-I., and W.-H. LI. 1985. Evidence for higher rates of nucleotide substitution in rodents than in man. Proc. Natl. Acad. Sci. USA 82:1741-1745.

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Authors
Muse, S. V., & Gaut, B. S.
Affiliations
North Carolina State University (US)
Venue
Molecular Biology and Evolution
Published
1994-09
Volume
11
Issue
5
Pages
715-24
ISSN
  • 0737-4038 (ISSN-L)
  • 1537-1719
OpenAlex
W1881807356
Cited by
920
References
2
Citations by year
2026: 25 · 2025: 19 · 2024: 22 · 2023: 16 · 2022: 25 · 2021: 27 · 2020: 30 · 2019: 50 · 2018: 28 · 2017: 27 · 2016: 45 · 2015: 25 · 2014: 51 · 2013: 44 · 2012: 39
FWCI
3.00
Type
journal article
Language
en
Open access
Locations
  • Molecular Biology and Evolution (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation (16250)
  • National Institutes of Health (16250)
  • National Institute of General Medical Sciences (F32GM016250, GM-16250, F32GM015528, R01GM032518, GM15528, GM32518)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
Keywords
synonymous substitution rate, nonsynonymous substitution rate, relative rate tests, likelihood ratio test, chloroplast genome, rate heterogeneity, rice, tobacco, Marchantia polymorpha
MeSH terms
Chloroplasts, Codon, Computer Simulation, Models, Genetic, Phylogeny, Plants, Plants, Toxic, Oryza, Sequence Homology, Nucleic Acid, Nicotiana, Likelihood Functions, Point Mutation, DNA, Chloroplast

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