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| Content Provider | PubMed Central |
|---|---|
| Author | Fahey, R. C. Brody, S. Mikolajczyk, S. D. |
| Abstract | Improved methods were developed for the determination of reduced glutathione (GSH), glutathione disulfide (GSSG), and protein-glutathione disulfide (PSSG) and applied to determine the glutathione status at various stages of the asexual life cycle for the band strain of Neurospora crassa. The GSH-GSSG ratio in freshly harvested dry conidia was found to be about 150 but decreased to around 6 when dryconidia were aged (stored) for 10 days after harvest. When conidia were germinated, this ratio increased to about 300 during the first 10 min of the 6-h germination process. In mycelia, during log-phase growth, the ratio was about 10-3. Changes in the ratio occurred primarily through changes in the GSSG content, which ranges from about 0.023 (mycelia) to 2(10-day aged conidia) mumol per g (dry weight) of residue, whereas GSH levels varied by a factor of about two. The PSSG content varied from 0.02 (mycelia) to 0.6 (10-day aged conidia) mumol per g (dry weight) of residue and generally paralleled the GSSG content. The results demonstrate the potential importance of thiol-disulfide reactions as a mechanism for the control of physiological properties associated with dormancy, and the observed changes in GSSG level are found to be compatible with the view that GSSG plays a role in the regulation of protein synthesis through control of polysome formation. |
| Starting Page | 144 |
| File Format | |
| ISSN | 10985530 |
| e-ISSN | 10985530 |
| Journal | Journal of Bacteriology |
| Issue Number | 1 |
| Volume Number | 121 |
| Language | English |
| Publisher Date | 1975-01-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Molecular Biology Microbiology |
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