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Molecular Biology and Evolution 18:691-699 (2001)
© 2001 Society for Molecular Biology and Evolution


ARTICLE

A General Empirical Model of Protein Evolution Derived from Multiple Protein Families Using a Maximum-Likelihood Approach

Simon Whelan and Nick Goldman

Department of Zoology, University of Cambridge, Cambridge, England

Phylogenetic inference from amino acid sequence data uses mainly empirical models of amino acid replacement and is therefore dependent on those models. Two of the more widely used models, the Dayhoff and JTT models, are estimated using similar methods that can utilize large numbers of sequences from many unrelated protein families but are somewhat unsatisfactory because they rely on assumptions that may lead to systematic error and discard a large amount of the information within the sequences. The alternative method of maximum-likelihood estimation may utilize the information in the sequence data more efficiently and suffers from no systematic error, but it has previously been applicable to relatively few sequences related by a single phylogenetic tree. Here, we combine the best attributes of these two methods using an approximate maximum-likelihood method. We implemented this approach to estimate a new model of amino acid replacement from a database of globular protein sequences comprising 3,905 amino acid sequences split into 182 protein families. While the new model has an overall structure similar to those of other commonly used models, there are significant differences. The new model outperforms the Dayhoff and JTT models with respect to maximum-likelihood values for a large majority of the protein families in our database. This suggests that it provides a better overall fit to the evolutionary process in globular proteins and may lead to more accurate phylogenetic tree estimates. Potentially, this matrix, and the methods used to generate it, may also be useful in other areas of research, such as biological sequence database searching, sequence alignment, and protein structure prediction, for which an accurate description of amino acid replacement is required.

Key Words: amino acid replacement • general reversible model • maximum likelihood • protein evolution

Key Words: amino acid replacement • general reversible model • maximum likelihood • protein evolution


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M. J. Yebra, M. Zuniga, S. Beaufils, G. Perez-Martinez, J. Deutscher, and V. Monedero
Identification of a Gene Cluster Enabling Lactobacillus casei BL23 To Utilize myo-Inositol
Appl. Envir. Microbiol., June 15, 2007; 73(12): 3850 - 3858.
[Abstract] [Full Text] [PDF]


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Syst BiolHome page
N. Rodriguez-Ezpeleta, H. Brinkmann, B. Roure, N. Lartillot, B. F. Lang, and H. Philippe
Detecting and Overcoming Systematic Errors in Genome-Scale Phylogenies
Syst Biol, June 1, 2007; 56(3): 389 - 399.
[Abstract] [Full Text] [PDF]


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Mol Biol EvolHome page
V. Ruano-Rubio and M. A. Fares
Testing the Neutral Fixation of Hetero-Oligomerism in the Archaeal Chaperonin CCT
Mol. Biol. Evol., June 1, 2007; 24(6): 1384 - 1396.
[Abstract] [Full Text] [PDF]


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Proc. Natl. Acad. Sci. USAHome page
E. A. Gladyshev and I. R. Arkhipova
From the Cover: Telomere-associated endonuclease-deficient Penelope-like retroelements in diverse eukaryotes
PNAS, May 29, 2007; 104(22): 9352 - 9357.
[Abstract] [Full Text] [PDF]


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Mol Biol EvolHome page
M. Gottschling, A. Stamatakis, I. Nindl, E. Stockfleth, A. Alonso, and I. G. Bravo
Multiple Evolutionary Mechanisms Drive Papillomavirus Diversification
Mol. Biol. Evol., May 1, 2007; 24(5): 1242 - 1258.
[Abstract] [Full Text] [PDF]


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BioinformaticsHome page
R. G. Beiko and R. L. Charlebois
A simulation test bed for hypotheses of genome evolution
Bioinformatics, April 1, 2007; 23(7): 825 - 831.
[Abstract] [Full Text] [PDF]


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Mol Biol EvolHome page
S. O. Sassi, E. L. Braun, and S. A. Benner
The Evolution of Seminal Ribonuclease: Pseudogene Reactivation or Multiple Gene Inactivation Events?
Mol. Biol. Evol., April 1, 2007; 24(4): 1012 - 1024.
[Abstract] [Full Text] [PDF]


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Plant Physiol.Home page
S. Richardt, D. Lang, R. Reski, W. Frank, and S. A. Rensing
PlanTAPDB, a Phylogeny-Based Resource of Plant Transcription-Associated Proteins
Plant Physiology, April 1, 2007; 143(4): 1452 - 1466.
[Abstract] [Full Text] [PDF]


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FASEB J.Home page
J. M. Fitzpatrick, Y. Hirai, H. Hirai, and K. F. Hoffmann
Schistosome egg production is dependent upon the activities of two developmentally regulated tyrosinases
FASEB J, March 1, 2007; 21(3): 823 - 835.
[Abstract] [Full Text] [PDF]


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Mol Biol EvolHome page
N. Rodriguez-Ezpeleta, H. Philippe, H. Brinkmann, B. Becker, and M. Melkonian
Phylogenetic Analyses of Nuclear, Mitochondrial, and Plastid Multigene Data Sets Support the Placement of Mesostigma in the Streptophyta
Mol. Biol. Evol., March 1, 2007; 24(3): 723 - 731.
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Mol Biol EvolHome page
B. Brindefalk, J. Viklund, D. Larsson, M. Thollesson, and S. G. E. Andersson
Origin and Evolution of the Mitochondrial Aminoacyl-tRNA Synthetases
Mol. Biol. Evol., March 1, 2007; 24(3): 743 - 756.
[Abstract] [Full Text] [PDF]


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J. Bacteriol.Home page
M. L. Sanderson-Smith, M. Dowton, M. Ranson, and M. J. Walker
The Plasminogen-Binding Group A Streptococcal M Protein-Related Protein Prp Binds Plasminogen via Arginine and Histidine Residues
J. Bacteriol., February 15, 2007; 189(4): 1435 - 1440.
[Abstract] [Full Text] [PDF]


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Mol Biol EvolHome page
A. Doron-Faigenboim and T. Pupko
A Combined Empirical and Mechanistic Codon Model
Mol. Biol. Evol., February 1, 2007; 24(2): 388 - 397.
[Abstract] [Full Text] [PDF]


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J. Biol. Chem.Home page
R. Bredemeier, T. Schlegel, F. Ertel, A. Vojta, L. Borissenko, M. T. Bohnsack, M. Groll, A. von Haeseler, and E. Schleiff
Functional and Phylogenetic Properties of the Pore-forming beta-Barrel Transporters of the Omp85 Family
J. Biol. Chem., January 19, 2007; 282(3): 1882 - 1890.
[Abstract] [Full Text] [PDF]


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Mol Biol EvolHome page
D. Baurain, H. Brinkmann, and H. Philippe
Lack of Resolution in the Animal Phylogeny: Closely Spaced Cladogeneses or Undetected Systematic Errors?
Mol. Biol. Evol., January 1, 2007; 24(1): 6 - 9.
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Mol Biol EvolHome page
S. L. Kosakovsky Pond, F. V. Mannino, M. B. Gravenor, S. V. Muse, and S. D. W. Frost
Evolutionary Model Selection with a Genetic Algorithm: A Case Study Using Stem RNA
Mol. Biol. Evol., January 1, 2007; 24(1): 159 - 170.
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Mol Biol EvolHome page
M. L. Porter, T. W. Cronin, D. A. McClellan, and K. A. Crandall
Molecular Characterization of Crustacean Visual Pigments and the Evolution of Pancrustacean Opsins
Mol. Biol. Evol., January 1, 2007; 24(1): 253 - 268.
[Abstract] [Full Text] [PDF]


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Integr. Comp. Biol.Home page
T. H. Shafer, M. A. McCartney, and L. M. Faircloth
Identifying exoskeleton proteins in the blue crab from an expressed sequence tag (EST) library
Integr. Comp. Biol., December 1, 2006; 46(6): 978 - 990.
[Abstract] [Full Text] [PDF]


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J Exp BotHome page
M. Gray-Mitsumune, M. O'Brien, C. Bertrand, F. Tebbji, A. Nantel, and D. P. Matton
Loss of ovule identity induced by overexpression of the fertilization-related kinase 2 (ScFRK2), a MAPKKK from Solanum chacoense
J. Exp. Bot., December 1, 2006; 57(15): 4171 - 4187.
[Abstract] [Full Text] [PDF]


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Mol Biol EvolHome page
S. B. Gould, M. S. Sommer, P. G. Kroth, G. H. Gile, P. J. Keeling, and U.-G. Maier
Nucleus-to-Nucleus Gene Transfer and Protein Retargeting into a Remnant Cytoplasm of Cryptophytes and Diatoms
Mol. Biol. Evol., December 1, 2006; 23(12): 2413 - 2422.
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Genome ResHome page
J. Savard, D. Tautz, S. Richards, G. M. Weinstock, R. A. Gibbs, J. H. Werren, H. Tettelin, and M. J. Lercher
Phylogenomic analysis reveals bees and wasps (Hymenoptera) at the base of the radiation of Holometabolous insects
Genome Res., November 1, 2006; 16(11): 1334 - 1338.
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GeneticsHome page
R. E. Baker and K. Rogers
Phylogenetic Analysis of Fungal Centromere H3 Proteins
Genetics, November 1, 2006; 174(3): 1481 - 1492.
[Abstract] [Full Text] [PDF]



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