Abstract：
:The yeast Saccharomyces cerevisiae is able to grow under aerobic as well as anaerobic conditions. We and others previously found that transcription levels of approximately 500 genes differed more than two-fold when cells from anaerobic and aerobic conditions were compared. Here, we addressed the effect of anaerobic growth at the post-transcriptional level by comparing the proteomes of cells isolated from steady-state glucose-limited anaerobic and aerobic cultures. Following two-dimensional gel electrophoresis and mass spectrometry we identified 110 protein spots, corresponding to 75 unique proteins, of which the levels differed more than two-fold between aerobically and anaerobically-grown cells. For 21 of the 110 spots, the intensities decreased more than two-fold whereas the corresponding mRNA levels increased or did not change significantly under anaerobic conditions. The intensities of the other 89 spots changed in the same direction as the mRNA levels of the corresponding genes, although to different extents. For some genes of glycolysis a small increase in mRNA levels, 1.5-2 fold, corresponded to a 5-10 fold increase in protein levels. Extrapolation of our results suggests that transcriptional regulation is the major but not exclusive mechanism for adaptation of S. cerevisiae to anaerobic growth conditions.
journal_name
J Proteomicsjournal_title
Journal of proteomicsauthors
Bruckmann A,Hensbergen PJ,Balog CI,Deelder AM,Brandt R,Snoek IS,Steensma HY,van Heusden GPdoi
10.1016/j.jprot.2008.11.012subject
Has Abstractpub_date
2009-01-30 00:00:00pages
662-9issue
6eissn
1874-3919issn
1876-7737pii
S1874-3919(08)00192-9journal_volume
71pub_type
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