New phylogenetic models for the evolution of proteins.

• LG4X model
  "Modeling Protein Evolution with Several Amino-Acid Replacement Matrices Depending on Site Rates."
  Quang Si Le, Cuong Cao Dang and Olivier Gascuel.
  Molecular Biology and Evolution, 2012.
• LG model
  "An improved general amino-acid replacement matrix."
  Le S.Q., Gascuel O.
  Molecular Biology and Evolution, 2008 Jul;25(7):1307-20.
• CAT model
  "Empirical profile mixture models for phylogenetic reconstruction."
  Le S.Q., Gascuel O., Lartillot N.
  Bioinformatics, 2008 Oct 15;24(20):2317-23.
• Mixture models
  "Phylogenetic Mixture Models for Proteins."
  Le S.Q., Lartillot N., Gascuel O.
  Philos. Trans. R. Soc. Lond. B. Biol. Sci., 2008 Oct 7.
• Structure-based models
  "Accounting for Solvent Accessibility and Secondary Structure in Protein Phylogenetics is Highly Beneficial."
  Le S.Q., Gascuel O.
  Systematic Biology, 59(3): 277-287, 2010.