Reaction catalyzed by [protein ADP-ribosylarginine] hydrolase (3.2.2.19)

	alpha-subunit of stimulating GTP-binding protein ADP-ribosylated	+		H2O	=		alpha-subunit of stimulating GTP-binding protein	+
	alpha-subunit of stimulating GTP-binding protein ADP-ribosylated	+		H2O	=		alpha-subunit of stimulating GTP-binding protein	+		ADP-ribose