Please use this identifier to cite or link to this item:
Title: Respiration predicted from an Enzyme Kinetic Model and the Metabolic Theory of Ecology in two species of marine bacteria
Authors: Aguiar González, Miguel Borja 
Packard, Ted T. 
Berdalet, Elisa
Roy, Sylvie
Gomez, May 
UNESCO Clasification: 251001 Oceanografía biológica
Keywords: ETS
Modeling respiration
Oxygen consumption
Issue Date: 2012
Publisher: 0022-0981
Project: Estudio de Un Nuevo Modelo Mecanistico Para El Metabolismo Del Zooplancton 
Journal: Journal of Experimental Marine Biology and Ecology 
Abstract: Respiratory oxygen consumption is the result of a cell's biochemistry. It is caused by enzymatic activity of the respiratory electron transfer system (ETS). However, in spite of this understanding, respiration models continue to be based on allometric equations relating respiration to body size, body surface, or biomass. The Metabolic Theory of Ecology (MTE) is a current example. It is based on Kleiber's law relating respiration (R) and biomass (M) in the form, , where C is a constant, Ea is the Arrhenius activation energy, k is the Boltzmann constant for an atom or molecule, and T is the temperature in Kelvin. This law holds because biomass packages the ETS. In contrast, we bypass biomass and model respiration directly from its causal relationship with the ETS activity, R = f (ETS). We use a biochemical Enzyme Kinetic Model (EKM) of respiratory oxygen consumption based on the substrate control of the ETS. It postulates that the upper limit of R is set by the maximum velocity, Vmax, of complex I of the ETS and the temperature, and that the substrate availability, S, modulates R between zero and this upper limit. Kinetics of this thermal-substrate regulation is described by the Arrhenius and Michaelis–Menten equations...
ISSN: 0022-0981
DOI: 10.1016/j.jembe.2011.09.018
Source: Journal Of Experimental Marine Biology And Ecology [ISSN 0022-0981], v. 412, p. 1-12
Appears in Collections:Artículos
Adobe PDF (272,73 kB)
Show full item record

Google ScholarTM




Export metadata

Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.