Document Detail


Entropy decrease associated to solute compartmentalization in the cell.
MedLine Citation:
PMID:  19595737     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We have deduced equations to quantify the entropy associated to the compartmentalization of components in eukaryotic cells as a function of cell and compartment volumes, and of the concentration of solutes. On the basis of known and plausible values of volume and solute concentrations and the deduced equations, we estimate that the contribution of compartmentalization to the decrease of entropy is approximately -14.4 x 10(-14)JK(-1)cell(-1) (-0.7 J K(-1)L(-1)) in the case of Saccharomyces cerevisiae, a typical eukaryotic cell, and approximately -49.6 x 10(-14)JK(-1)cell(-1) (-1.0 J K(-1)L(-1)) in the more complex Chlamydomonas reinhardtii. When compared with other potential contributing factors, such as the informational entropy of DNA and the conformational entropy of proteins, compartmentalization appears as an essential development that significantly decreased the entropy of living cells during biological evolution.
Authors:
Dolores Marín; Mercedes Martín; Bartolomé Sabater
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2009-07-10
Journal Detail:
Title:  Bio Systems     Volume:  98     ISSN:  1872-8324     ISO Abbreviation:  BioSystems     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-08-28     Completed Date:  2009-11-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0430773     Medline TA:  Biosystems     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  31-6     Citation Subset:  IM    
Affiliation:
Department of Physical Chemistry, University of Alcalá, Alcalá de Henares, 28871 Madrid, Spain.
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MeSH Terms
Descriptor/Qualifier:
Biopolymers / chemistry*
Computer Simulation
Energy Transfer / physiology*
Entropy
Models, Biological*
Saccharomyces cerevisiae / physiology*
Solubility
Water-Electrolyte Balance / physiology*
Chemical
Reg. No./Substance:
0/Biopolymers

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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