transferase activity, transferring phosphorus-containing groups ammonia-lyase activity catalytic activity, acting on a protein ADP-riboxanase-[protein] activity https://github.com/geneontology/go-ontology/issues/22480 https://github.com/geneontology/go-ontology/issues/31850 ADP-riboxanase activity Reactome:R-HSA-9956624 RHEA:75887 GO:0140740 2021-11-30T08:29:49Z pg RHEA:75883 Note that this activity has two steps: a transfer of an ADP-ribose group, followed by the elimination of an ammonia group. RHEA:69500 molecular_function Catalysis of the reaction: L-arginyl-[protein] + NAD+ = ADP-riboxanated L-argininyl-[protein] + H+ + NH4+ + nicotinamide.