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De novo synthesis of glucose-6-phosphate- (E.C. 1.1.1.49) and 6-phosphogluconate dehydrogenase (E.C. 1.1.1.44) in plant storage tissue slices
- Resting potato tuber tissue possesses only faint activity of the two dehydrogenases of the oxidative pentose phosphate cycle, glucose-6-phosphate- and 6-phosphogluconate dehydrogenase. Slicing of the tissue, however, greatly enhances the action of both enzymes. The slicing-induced increase in activity is a consequence of intensified action of at least 5 glucose-6-phosphate dehydrogenase isozymes and a more differentiated activation/inactivation of seven 6-phosphogluconate dehydrogenase isozymes. Using density labelling and isopycnic equilibrium centrifugation it could be demonstrated, that the bulk of both enzymes appearing after slicing the tissue is the result of de novo synthesis rather than activation of pre-existing proenzymes.
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| Author: | Günter KahlGND |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-718208 |
| DOI: | https://doi.org/10.1515/znc-1974-11-1209 |
| ISSN: | 0939-5075 |
| ISSN: | 1865-7125 |
| Parent Title (German): | Zeitschrift für Naturforschung, C |
| Publisher: | Verlag der Zeitschrift für Naturforschung |
| Place of publication: | Tübingen |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2014/06/02 |
| Year of first Publication: | 1974 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2024/01/30 |
| Tag: | Glucose-6-phosphate- and 6-phosphogluconate dehydrogenase; Isozyme Pattern; Potato Tuber Slices; de novo Synthesis |
| Volume: | 29.1974 |
| Issue: | 11-12 |
| Page Number: | 5 |
| First Page: | 700 |
| Last Page: | 704 |
| Institutes: | Biowissenschaften |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung-Nicht kommerziell-Keine Bearbeitung 3.0 |
