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Enzyme activities in concentrated solutions of glycinebetaine and other solutes

✍ Scribed by A. Pollard; R. G. Wyn Jones

Publisher: Springer-Verlag
Year: 1979
Tongue: English
Weight: 755 KB
Volume: 144
Category: Article
ISSN: 0032-0935
DOI: 10.1007/bf00388772

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✦ Synopsis

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 noninhibitory 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.

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