Abstract
Abstract An album in fraction extracted from wheat flour contains thioredoxin reductase (Mr = 65,000) and a heat-stable thioredoxin (Mr = 15,000) which are separated on DEAE cellulose and further purified by gel filtration. W heat thioredoxin stimulates E. coli ribonucleotide reductase but not chloroplast fructose-bis-phosphatase. The enzyme is NADPH -dependent (Km = 3.2 X 10-6 ᴍ) . In presence of the thioredoxin it slowly reduces other proteins like insulin or ribonuclease. Therefore it is most likely identical with a protein disulfide reductase (of unknown specificity) previously described in wheat. This new thioredoxin system is a counterpart of the ferredoxin-dependent system found in photosynthetic plant cells, suggesting different, specific mechanisms for regeneration of reduced thioredoxins in germinating seeds and green plants.
Dates
Type | When |
---|---|
Created | 7 years, 1 month ago (Aug. 2, 2018, 1:32 p.m.) |
Deposited | 4 years, 2 months ago (June 22, 2021, 5:28 p.m.) |
Indexed | 1 year, 10 months ago (Oct. 19, 2023, 8:25 p.m.) |
Issued | 46 years, 5 months ago (April 1, 1979) |
Published | 46 years, 5 months ago (April 1, 1979) |
Published Online | 11 years, 3 months ago (June 2, 2014) |
Published Print | 46 years, 5 months ago (April 1, 1979) |
@article{Suske_1979, title={NADPH-Dependent Thioredoxin Reductase and a New Thioredoxin from Wheat}, volume={34}, ISSN={0939-5075}, url={http://dx.doi.org/10.1515/znc-1979-3-410}, DOI={10.1515/znc-1979-3-410}, number={3–4}, journal={Zeitschrift für Naturforschung C}, publisher={Walter de Gruyter GmbH}, author={Suske, Guntram and Wagner, Wolfgang and Follmann, Hartmut}, year={1979}, month=apr, pages={214–221} }