The importance of using realistic evolutionary models for retrodicting proteomes

Area of Science:

• Evolutionary Biology
• Phylogenetics
• Computational Biology
• Genomics

Background:

• Reconstructing phylogenetic trees from molecular data necessitates accurate models of molecular evolution.
• Existing models optimize molecular changes along tree branches, requiring realistic processes and biological assumptions.
• A recent study proposed a proteome evolution model penalizing protein world growth, yielding an 'upside down' phylogeny.

Purpose of the Study:

• To critically evaluate the phylogenetic self-consistency of a novel proteome evolution model.
• To assess the model's compatibility with established biological knowledge and principles.
• To underscore the complexities and potential pitfalls in phylogenetic and phylogenomic retrodiction.

Main Methods:

• Comparative analysis of the proposed proteome evolution model against established biological knowledge.
• Evaluation of the model's consistency with scale-free properties of domain networks and genomic scaling laws.
• Assessment of the model's adherence to the principle of continuity in evolutionary thinking.

Main Results:

• The new proteome evolution model was found to be phylogenetically self-inconsistent.
• The model contradicts significant background knowledge, including network properties and scaling laws.
• Technical and conceptual limitations invalidate the study's main conclusions regarding protein evolution bottlenecks.

Conclusions:

• The evaluated proteome evolution model is not phylogenetically sound.
• The study highlights critical challenges and potential errors in phylogenetic and phylogenomic retrodiction.
• Reexamination of ideographic exploration frameworks is necessary for robust scientific inquiry in evolutionary studies.