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- W1983088587 abstract "One approach to discriminate among specific DNases in apoptosis is to use inhibitors specific for each endonuclease. Zn2+ is known to inhibit Ca(2+)- and Mg(2+)-dependent endonuclease enzymatic activities during apoptosis. Acidic DNases were thought to be insensitive to Zn2+. In this paper, we analyse the effects of Zn2+ on activity of DNase II, either purified or in nuclei from lens fiber cells. These cells follow a physiological nuclear degeneration with DNase II accumulation in their nuclei. We show that Zn2+ is able to inhibit also this acidic endonuclease at a concentration of 1-6 mM. At a higher concentration of Zn2+, DNA is extensively degraded during the assay, masking the inhibition of the enzyme. This DNA degradation in the presence of Zn2+ has led to an overestimation of the activity of DNase II in studies of apoptosis. Hence, Zn2+ cannot be used to specifically identify one endonuclease among the different DNases involved in nuclear degradation during programmed cell death." @default.
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- W1983088587 date "1997-07-01" @default.
- W1983088587 modified "2023-10-13" @default.
- W1983088587 title "On the use of Zn2+ to discriminate endonucleases activated during apoptosis" @default.
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- W1983088587 doi "https://doi.org/10.1016/s0300-9084(97)86153-6" @default.
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