γ-Glutamyl transpeptidase in Hydra littoralis
Saccharomyces cerevisiae Proteins
Hydra littoralis exhibits high γ-glutamyl transpeptidase activity, i.e., about 12% of the activity (determined with glutathione) of rat kidney. Histochemical studies show that the enzyme is located mainly in the gastric and sub-hypostome regions; the enzyme is also present in the tentacles and basal disc. These results and the presence of other enzymes of the γ-glutamyl cycle suggest that the cycle plays a role in the metabolism of glutathione in hydras and that γ-glutamyl transpeptidase may function in their digestive and absorptive processes and possibly also in the behavioral response to glutathione. © 1976.
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