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. 1990 Feb 12;261(1):23-7.
doi: 10.1016/0014-5793(90)80627-u.

The ammonium sulfate activation of phosphorylase b

D D Leonidas  1 , N G Oikonomakos, A C Papageorgiou, A Xenakis, C T Cazianis, F Bem
Affiliations
Free article

The ammonium sulfate activation of phosphorylase b

D D Leonidas et al. FEBS Lett. .
Free article

Erratum in

  • FEBS Lett 1990 May 7;264(1):159

Abstract

The ammonium sulfate activation of phosphorylase b has been studied. Ammonium sulfate, when present in high concentrations, induces properties of phosphorylase a in phosphorylase b, such as an enhanced affinity for AMP, a reversal of the glucose-6-P inhibition and enzyme tetramerization. The data are consistent with the interpretation that sulfates bind to the Ser-14 site and the sulfate-protein interactions at this site are responsible for activation of phosphorylase b.

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