Enzyme activities in concentrated solutions of glycinebetaine and other solutes

The activities of a number of enzymes in concentrated solutions of glycinebetaine and other solutes have been studied. Glycinebetaine, in contrast to electrolytes such as NaCl, was found to be non-inhibitory up to 500 mM. This is compatible with the postulated role of glycinebetaine in cytoplasmic o...

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Bibliographic Details
Published in:	Planta Vol. 144; no. 3; pp. 291 - 298
Main Authors:	Pollard, A, Wyn Jones, R.G
Format:	Journal Article
Language:	English
Published:	Germany Springer-Verlag 01-01-1979
Subjects:	Barley Dehydrogenases Electrolytes Enzyme activity Enzymes Flowers Plants Salts Solutes Table salt
Online Access:	Get full text
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Summary:	The activities of a number of enzymes in concentrated solutions of glycinebetaine and other solutes have been studied. Glycinebetaine, in contrast to electrolytes such as NaCl, was found to be non-inhibitory up to 500 mM. This is compatible with the postulated role of glycinebetaine in cytoplasmic osmoregulation. Partial protection against NaCl inhibition was afforded by glycinebetaine in some cases. More detailed studies on glycinebetaine— NaCl-enzyme interactions were carried out using malate dehydrogenase (decarboxylating) from Hordeum vulgare.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0032-0935 1432-2048
DOI:	10.1007/BF00388772