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The Combined Effects Of Reactant Kinetics And Enzyme Stability Explain The Temperature Dependence Of Metabolic Rates, John Delong, J. P. Gibert, Thomas M. Luhring, Gwendolyn C. Bachman, B. Reed, A. Neyer, Kristi Montooth
The Combined Effects Of Reactant Kinetics And Enzyme Stability Explain The Temperature Dependence Of Metabolic Rates, John Delong, J. P. Gibert, Thomas M. Luhring, Gwendolyn C. Bachman, B. Reed, A. Neyer, Kristi Montooth
School of Biological Sciences: Faculty Publications
A mechanistic understanding of the response of metabolic rate to temperature is essential for understanding thermal ecology and metabolic adaptation. Although the Arrhenius equation has been used to describe the effects of temperature on reaction rates and metabolic traits, it does not adequately describe two aspects of the thermal performance curve (TPC) for metabolic rate—that metabolic rate is a unimodal function of temperature often with maximal values in the biologically relevant temperature range and that activation energies are temperature dependent. We show that the temperature dependence of metabolic rate in ectotherms is well described by an enzyme-assisted Arrhenius (EAAR) model …