The Effect of Thiol Compounds on the Glutamate Affinity of the Chloroplastic Glutamine Synthetase from Mustard Leaves
Open Access
- 1 April 1985
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung C
- Vol. 40 (3-4) , 295-296
- https://doi.org/10.1515/znc-1985-3-426
Abstract
The chloroplastic glutamine synthetase taken from mustard leaves shows a positive cooperative glutamate binding. The S0.5-value depends on the DTE concentration in the homogenization buffer. Normal glutamate saturation kinetics have been found with the root enzyme and the enzyme of etiolated cotyledons. These are not influenced by thiol compounds. The possible function of the allosteric behaviour of GS2 is discussed.Keywords
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