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Título

Dynamic sensitivity and nonlinear interactions influence the system-level evolutionary patterns of phototransduction proteins

AutorInvergo, Brandon M. ; Montanucci, Ludovica ; Bertranpetit, Jaume
Palabras claveNatural selection
Molecular evolution
Models/simulations
Epistasis
Evolutionary systems biology
Fecha de publicación7-dic-2015
EditorRoyal Society (Great Britain)
CitaciónProceedings of the Royal Society of London - B 282(1820): 20152215 (2015)
ResumenDetermining the influence of complex, molecular-system dynamics on the evolution of proteins is hindered by the significant challenge of quantifying the control exerted by the proteins on system output. We have employed a combination of systems biology and molecular evolution analyses in a first attempt to unravel this relationship. We employed a comprehensive mathematical model of mammalian phototransduction to predict the degree of influence that each protein in the system exerts on the high-level dynamic behaviour. We found that the genes encoding the most dynamically sensitive proteins exhibit relatively relaxed evolutionary constraint. We also investigated the evolutionary and epistatic influences of the many nonlinear interactions between proteins in the system and found several pairs to have coevolved, including those whose interactions are purely dynamical with respect to system output. This evidence points to a key role played by nonlinear system dynamics in influencing patterns of molecular evolution.
Versión del editorhttp://dx.doi.org/10.1098/rspb.2015.2215
URIhttp://hdl.handle.net/10261/151338
DOI10.1098/rspb.2015.2215
ISSN0962-8452
E-ISSN1471-2954
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