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Identification of a Phosphatase Activity, toward the Phosphopeptide PyroGlu-Asp-Asp-Ser(p)-Asp-Glu-Glu-Asn, in Nuclear Extract from HL-60 Promyelocitic Leukaemia Cells

Journal article published in 2000 by E. Cardellini, V. Nardicchi, L. Macchioni ORCID
This paper was not found in any repository; the policy of its publisher is unknown or unclear.
This paper was not found in any repository; the policy of its publisher is unknown or unclear.

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Abstract

Total protein extract from HL-60 cells was found to be able to dephosphorylate the RNA polymerase II octapeptide pyroGlu-Asp-Asp-Ser-Asp-Glu-Glu-Asn previously phosphorylated with protein kinase CKII (pCKII). Fractionation in cytoplasm, nuclear and chromatin extracts shows the phosphatase activity to be localized only in the nucleus, but not to be bound to the chromatin.