PMID: 6402365Jan 17, 1983Paper

ADP-ribosylation in permeable HeLa S3 cells

European Journal of Biochemistry
J HoltlundS G Laland

Abstract

ADP-ribosylation in permeabilized metaphase and interphase cells using [32P]NAD at pH 8.0 have been compared. Incorporation into trichloroacetic acid insoluble material was 4-5-times greater in metaphase cells. 17-22% was in the soluble fraction which contained material released from the cells, 16-22% in the 0.2 M HCl extract (histones) of the cell ghosts and the remaining activity in the residual fraction. Fractions were analyzed using dodecylsulphate/polyacrylamide gel electrophoresis at pH 6.0. The soluble fractions from metaphase and interphase cells exhibited three common unidentified ADP-ribosylated proteins corresponding to 78 000, 54 000 and 36 000 Da. In addition metaphase cells contained several other ADP-ribosylated proteins not present in interphase cells. The 0.2 M HCl extracts gave from metaphase cells radioactivity in the 32 000-39 000-Da region suggesting ADP-ribosylation of histone H1 with up to 10 residues of ADP-ribose and in the 17 000-20 000-Da region indicating ADP-ribosylation of core histones. The pattern of ADP-ribosylation of core histone in metaphase and interphase cells was qualitatively similar whereas the number of ADP-ribose residues per H1 molecule was higher in metaphase cells. The residual frac...Continue Reading

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Citations

Mar 11, 1988·Biochimica Et Biophysica Acta·Y LeducG G Poirier
Dec 1, 1985·Archives of Biochemistry and Biophysics·K W Adolph
Sep 30, 1983·Biochemical and Biophysical Research Communications·M K Song, K W Adolph

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