Alessandro Finazzi Agro'

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Tryptophan fluorescence is extremely useful to monitor structural conformational transitions in proteins. Denaturant-induced unfolding of azurin and ascorbate oxidase has been studied by dynamic fluorescence measurements in the frequency domain and the results have been interpreted in terms of continuous distribution of lifetimes. The data add new(More)
(1) 45% of the total copper of green zucchini ascorbate oxidase is EPR-detectable. At least two species of copper are present, one with a small A∥ (Type 1) and one with a large A∥ (Type 2). Computer simulated spectra indicated 50% contribution by each type of copper. (2) Azide inhibited ascorbate oxidase activity by an uncompetitive mechanism. EPR and(More)
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