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Dissociation of urease in acetate buffer of pH 3.5 with retention of the enzymatic activity

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  • Chimica. Biochimica. Biophysica
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Riassunto

Le molecole dell'urease (peso molecolare 480,000, coefficiente di sedimentazione 18,6 S) si dividono a metà quando trattate con tampone acetato, 0,1M, pH 3,5. Inizialmente, l'attività enzimatica è 40% di quella al pH 7 (tampone fosfato, 0,34M) e la dissociazione è riversibile. Prolungata esposizione al pH 3,5 causa una lenta denaturazione, con perdita dell'attività e dell'abilità di ricostituirsi.

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This work was supported by grant No. GM 13,900 and by Career Development Award No. 5K3 GM 13,489 (to G. G.) from the National Institutes of Health.

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Gorin, G., Chin, C.C. & Wang, S.F. Dissociation of urease in acetate buffer of pH 3.5 with retention of the enzymatic activity. Experientia 24, 685–687 (1968). https://doi.org/10.1007/BF02138313

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