Site-specific characterization of the Asp- and Glu-ADP-ribosylated proteome.

Zhang, Yajie; Wang, Jianqi; Ding, Ming; Yu, Yonghao · Nat Methods · 2013

basic_science · Level V

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Abstract

Poly(ADP-ribosyl)ation is catalyzed by a family of enzymes known as PARPs. We describe a method to characterize the human aspartic acid- and glutamic acid-ADP-ribosylated proteome. We identified 1,048 ADP-ribosylation sites on 340 proteins involved in a wide array of nuclear functions; among these were many previously unknown PARP downstream targets whose ADP-ribosylation was sensitive to PARP inhibitor treatment. We also confirmed that iniparib had a negligible effect on PARP activity in intact cells.

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