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  • Title: ADP-Ribosyl-Acceptor Hydrolase Activities Catalyzed by the ARH Family of Proteins.
    Author: Mashimo M, Moss J.
    Journal: Methods Mol Biol; 2018; 1813():187-204. PubMed ID: 30097868.
    Abstract:
    The ARH family of ADP-ribosyl-acceptor hydrolases is composed of three 39-kDa proteins (ARH1, 2, and 3), which hydrolyze specific ADP-ribosylated substrates. ARH1 hydrolyzes mono(ADP-ribosyl)ated arginine, which results from actions of cholera toxin and other nicotinamide adenine dinucleotide (NAD+):arginine ADP-ribosyl-transferases, while ARH3 hydrolyzes poly(ADP-ribose) and O-acetyl-ADP-ribose, resulting from the action of poly(ADP-ribose) polymerases and sirtuins, respectively. ARH2 has not been reported to have enzymatic activity, because of differences in the catalytic domain. Thus, the substrate specificities of ARH1 and ARH3 proteins result in unique cellular functions. In this chapter, we introduce several methods to monitor the activities of the ARH family members.
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