Effective Potential Energy Expression for Membrane Transport

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dc.creatorFinkel, Robert W.
dc.date2007-02-11
dc.date.accessioned2026-07-07T07:46:25Z
dc.date.available2026-07-07T07:46:25Z
dc.descriptionAll living cells transport molecules and ions across membranes, often against concentration gradients. This active transport requires continual energy expenditure and is clearly a nonequilibrium process for which standard equilibrium thermodynamics is not rigorously applicable. Here we derive a nonequilibrium effective potential that evaluates the per particle transport energy invested by the membrane. A novel method is used whereby a Hamiltonian function is constructed using particle concentrations as generalized coordinates. The associated generalized momenta are simply related to the individual particle energy from which we identify the effective potential. Examples are given and the formalism is compared with the equilibrium Gibb's free energy.
dc.description3 pages in pdf format
dc.identifierhttps://arxiv.org/abs/q-bio/0702026
dc.identifierhttp://arxiv.org/abs/q-bio/0702026
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/123821
dc.subjectSubcellular Processes
dc.subjectQuantitative Methods
dc.titleEffective Potential Energy Expression for Membrane Transport
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