Cited by 179Genomics and Phylogenetic StudiesRNA and protein synthesis mechanismsFractal and DNA sequence analysis

On Reduced Amino Acid Alphabets for Phylogenetic Inference

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Susko, E., Roger, A. J.·2007·Molecular Biology and Evolution

Abstract

We investigate the use of Markov models of evolution for reduced amino acid alphabets or bins of amino acids. The use of reduced amino acid alphabets can ameliorate effects of model misspecification and saturation. We present algorithms for 2 different ways of automating the construction of bins: minimizing criteria based on properties of rate matrices and minimizing criteria based on properties of alignments. By simulation, we show that in the absence of model misspecification, the loss of information due to binning is found to be insubstantial, and the use of Markov models at the binned level is found to be almost as effective as the more appropriate missing data approach. By applying these approaches to real data sets where compositional heterogeneity and/or saturation appear to be causing biased tree estimation, we find that binning can improve topological estimation in practice.

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Authors
Susko, E., & Roger, A. J.
Affiliations
Dalhousie University (CA)
Corresponding author
Susko, E.
Venue
Molecular Biology and Evolution
Published
2007-05-23
Volume
24
Issue
9
Pages
2139-2150
ISSN
  • 0737-4038 (ISSN-L)
  • 1537-1719
OpenAlex
W2020680099
Cited by
177
References
41
Citations by year
2026: 8 · 2025: 9 · 2024: 10 · 2023: 12 · 2022: 16 · 2021: 19 · 2020: 16 · 2019: 23 · 2018: 15 · 2017: 6 · 2016: 6 · 2015: 2 · 2014: 4 · 2013: 2 · 2012: 4
FWCI
2.39
Type
journal article
Language
en
Open access
Locations
  • Molecular Biology and Evolution (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Canadian Institute for Advanced Research
  • Canadian Institutes of Health Research
  • Natural Sciences and Engineering Research Council of Canada
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 › Molecular Biology › Fractal and DNA sequence analysis
Keywords
reduced amino acid alphabet, phylogenetic inference, model misspecification, saturation, rate matrix, compositional heterogeneity, missing data
MeSH terms
Algorithms, Amino Acid Sequence, Amino Acids, Animals, Chloroplasts, Computer Simulation, Markov Chains, Molecular Sequence Data, Nuclear Proteins, Phylogeny, Plant Proteins, Plants, Sequence Analysis, Protein, Mitochondrial Proteins

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