Condition-dependent cell volume and concentration of Escherichia coli to facilitate data conversion for systems biology modeling

Verfasser / Beitragende:
[Benjamin Volkmer, Matthias Heinemann]
Ort, Verlag, Jahr:
2011
Enthalten in:
PLoS ONE, 6 (7), p. e23126
Format:
Artikel (online)
ID: 52878210X
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024 7 0 |a 10.3929/ethz-b-000038570  |2 doi 
024 7 0 |a 10.1371/journal.pone.0023126  |2 doi 
035 |a (ETHRESEARCH)oai:www.research-collecti.ethz.ch:20.500.11850/276902 
100 1 |a Volkmer  |D Benjamin 
245 1 0 |a Condition-dependent cell volume and concentration of Escherichia coli to facilitate data conversion for systems biology modeling  |h [Elektronische Daten]  |c [Benjamin Volkmer, Matthias Heinemann] 
246 0 |a PLoS ONE 
506 |a Open access  |2 ethresearch 
520 3 |a Systems biology modeling typically requires quantitative experimental data such as intracellular concentrations or copy numbers per cell. In order to convert population-averaging omics measurement data to intracellular concentrations or cellular copy numbers, the total cell volume and number of cells in a sample need to be known. Unfortunately, even for the often studied model bacterium Escherichia coli this information is hardly available and furthermore, certain measures (e.g. cell volume) are also dependent on the growth condition. In this work, we have determined these basic data for E. coli cells when grown in 22 different conditions so that respective data conversions can be done correctly. First, we determine growth-rate dependent cell volumes. Second, we show that in a 1 ml E. coli sample at an optical density (600 nm) of 1 the total cell volume is around 3.6 µl for all conditions tested. Third, we demonstrate that the cell number in a sample can be determined on the basis of the sample's optical density and the cells' growth rate. The data presented will allow for conversion of E. coli measurement data normalized to optical density into volumetric cellular concentrations and copy numbers per cell - two important parameters for systems biology model development. 
540 |a Creative Commons Attribution 3.0 Unported  |u http://creativecommons.org/licenses/by/3.0  |2 ethresearch 
700 1 |a Heinemann  |D Matthias  |e joint author 
773 0 |t PLoS ONE  |d Lawrence, KS : Public Library of Science  |g 6 (7), p. e23126  |x 1932-6203 
856 4 0 |u http://hdl.handle.net/20.500.11850/276902  |q text/html  |z WWW-Backlink auf das Repository (Open access) 
908 |D 1  |a Journal Article  |2 ethresearch 
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950 |B ETHRESEARCH  |P 100  |E 1-  |a Volkmer  |D Benjamin 
950 |B ETHRESEARCH  |P 700  |E 1-  |a Heinemann  |D Matthias  |e joint author 
950 |B ETHRESEARCH  |P 773  |E 0-  |t PLoS ONE  |d Lawrence, KS : Public Library of Science  |g 6 (7), p. e23126  |x 1932-6203 
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949 |B ETHRESEARCH  |F ETHRESEARCH  |b ETHRESEARCH  |j Journal Article  |c Open access