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The catabolic capacity of Saccharomyces cerevisiae is preserved to a higher extent during carbon compared to nitrogen starvation
Göteborg University.
Göteborg University.
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE).
Göteborg University.
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2001 (English)In: Yeast, ISSN 0749-503X, E-ISSN 1097-0061, Vol. 18, no 15, p. 1371-1381Article in journal (Refereed) Published
Abstract [en]

A comparison of catabolic capacity was made between S. cerevisiae cells subjected to 24 h carbon or nitrogen starvation. The cells were shifted to starvation conditions at the onset of respiratory growth on ethanol in aerobic batch cultures, using glucose as the carbon and energy source. The results showed that the catabolic capacity was preserved to a much larger extent during carbon compared to nitrogen starvation. Nitrogen starvation experiments were made in the presence of ethanol (not glucose) to exclude the effect of glucose transport inactivation (Busturia and Lagunas, 1986). Hence, the difference in catabolic capacity could not be attributed to differences in glucose transport capacity during these conditions. In order to understand the reason for this difference in starvation response, measurement of protein composition, adenine nucleotides, inorganic phosphate, poly phosphate and storage carbohydrates were performed. No clear correlation between any of these variables and catabolic capacity after starvation could be obtained. However, there was a positive correlation between total catabolic activity and intracellular ATP concentration when glucose was added to starved cells. The possible mechanism for this correlation, as well as what determines the ATP level, is discussed.

Place, publisher, year, edition, pages
Chichester: Wiley , 2001. Vol. 18, no 15, p. 1371-1381
Keywords [en]
Saccharomyces, Starvation, Protein composition, Fermentative capacity
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:hh:diva-3476DOI: 10.1002/yea.786ISI: 000172193000002PubMedID: 11746599Scopus ID: 2-s2.0-0035184695OAI: oai:DiVA.org:hh-3476DiVA, id: diva2:291595
Available from: 2010-02-02 Created: 2009-12-01 Last updated: 2017-12-12Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
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  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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