Regulation of adenosine-5?-phosphosulfate sulfotransferase activity by H2S in Lemna minor L.
- 1 January 1976
- journal article
- research article
- Published by Springer Nature in Planta
- Vol. 133 (1) , 85-88
- https://doi.org/10.1007/bf00386010
Abstract
When Lemna minor L. is transferred to an atmosphere with H2S, there is a rapid loss of extractable adenosine-5′-phosphosulfate sulfotransferase activity. The activity is restored within 24 h in an atmosphere without H2S. This restoration of activity is completely inhibited by cycloheximid but not by chloramphenicol. In vitro, S2- up to 5 mM and cysteine, methionine, and glutathione up to 50 mM do not inhibit the enzyme. The activities of ATP sulfurylase and O-acetyl-L-serine sulfhydrylase are not affected significantly by H2S. The physiological significance of the regulation of adenosine-5′-phosphosulfate sulfotransferase is discussed.Keywords
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