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arXiv · 1611.02332

Energy-based Analysis of Biomolecular Pathways

Peter J. Gawthrop·Edmund J. Crampin
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Abstract

Decomposition of biomolecular reaction networks into pathways is a powerful approach to the analysis of metabolic and signalling networks. Current approaches based on analysis of the stoichiometric matrix reveal information about steady-state mass flows (reaction rates) through the network. In this work we show how pathway analysis of biomolecular networks can be extended using an energy-based approach to provide information about energy flows through the network. This energy-based approach is developed using the engineering-inspired bond graph methodology to represent biomolecular reaction networks. The approach is introduced using glycolysis as an exemplar; and is then applied to analyse the efficiency of free energy transduction in a biomolecular cycle model of a transporter protein (Sodium-Glucose Transport Protein 1, SGLT1). The overall aim of our work is to present a framework for modelling and analysis of biomolecular reactions and processes which considers energy flows and losses as well as mass transport.

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Peter J. Gawthrop, Edmund J. Crampin. 2017-05-23. Energy-based Analysis of Biomolecular Pathways. https://doi.org/10.1098/rspa.2016.0825

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