Document Detail


Active transport of the Ca(2+)-pump: introduction of the temperature difference as a driving force.
MedLine Citation:
PMID:  23299395     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We analyse a kinetic cycle of the Ca(2+)-ATPase molecular pump using mesoscopic non-equilibrium thermodynamics. The pump is known to generate heat, and by analysing the operation on the mesoscopic level, we are able to introduce a temperature difference and the corresponding heat flux in the description. Integration over the internal coordinates then results in non-linear flux-force relations describing the operation of the pump on the macroscopic level. Specifically, we obtain an expression for the heat flux associated with the active transport and the coupling of heat effects to the transport of ions and the rate of the ATP-hydrolysis.
Authors:
Anders Lervik; Dick Bedeaux; Signe Kjelstrup
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-9
Journal Detail:
Title:  European biophysics journal : EBJ     Volume:  -     ISSN:  1432-1017     ISO Abbreviation:  Eur. Biophys. J.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8409413     Medline TA:  Eur Biophys J     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Chemistry, Norwegian University of Science and Technology, Trondheim, Norway, anders.lervik@chem.ntnu.no.
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