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Updated: Mar 29, 2026
08:33
Determination of Photoreceptor Cell Spectral Sensitivity in an Insect Model from In Vivo Intracellular Recordings
Published on: February 26, 2016
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Dynamic sensitivity and nonlinear interactions influence the system-level evolutionary patterns of phototransduction
Brandon M Invergo1, Ludovica Montanucci2, Jaume Bertranpetit2
1IBE-Institute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), CEXS-UPF-PRBB, Barcelona, Catalonia 08003, Spain invergo@ebi.ac.uk.
Proceedings. Biological Sciences
|December 4, 2015
Summary
Molecular system dynamics significantly influence protein evolution. Genes for dynamically sensitive proteins show relaxed evolutionary constraint, suggesting nonlinear interactions shape molecular evolution.
Area of Science:
- Systems biology
- Molecular evolution
- Biophysics
Background:
- Understanding how molecular system dynamics affect protein evolution is challenging due to difficulties in quantifying protein control over system output.
- Protein function and evolution are intricately linked to the complex dynamics of biological systems.
Purpose of the Study:
- To investigate the relationship between molecular system dynamics and protein evolution using a systems biology approach.
- To quantify the influence of individual proteins on the dynamic behavior of a biological system.
Main Methods:
- Developed a comprehensive mathematical model of mammalian phototransduction.
- Applied systems biology and molecular evolution analyses to predict protein influence on system dynamics.
- Investigated evolutionary and epistatic influences of nonlinear protein interactions.
Main Results:
- Identified proteins whose genes exhibit relaxed evolutionary constraint despite high dynamic sensitivity.
- Discovered coevolution between protein pairs, including those with purely dynamical interactions.
- Demonstrated that nonlinear system dynamics play a crucial role in shaping molecular evolution patterns.
Conclusions:
- Nonlinear system dynamics are a key factor influencing molecular evolution.
- The interplay between protein dynamics and evolutionary constraint provides insights into biological system adaptation.
- This study establishes a framework for analyzing the impact of system dynamics on evolutionary trajectories.
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