2.4.2.30	DNA	absolute requirement	637991, 637993	
2.4.2.30	GDP	increases activity in absence of Mg2+	637994	
2.4.2.30	GTP	increases activity in absence of Mg2+	637994	
2.4.2.30	GTP(gammaS)	increases activity in absence of Mg2+	637994	
2.4.2.30	ATP	5-10 mM, 20-30% stimulation	637995	
2.4.2.30	4-[[[6-cyano-1-[(1-methyl-1H-imidazol-5-yl)methyl]-1,2,3,4,6,7-hexahydroquinolin-3-yl](pyridin-2-ylsulfonyl)amino]methyl]-N,N-dimethylpiperidine-1-carboxamide	activates in presence of Mg2+, inhibits in absence of Mg2+	637997	
2.4.2.30	harmaline hydrochloride	activates more strongly in absence of Mg2+ than in presence of Mg2+	637997	
2.4.2.30	Phthalic acid	activates more strongly in absence of Mg2+ than in presence of Mg2+	637997	
2.4.2.30	DNA	required	637998	
2.4.2.30	DNA	the enzyme is completely dependent on the presence of DNA containing single or double stranded breaks. Activation results in a decondensation of chromatin superstructure in vitro, which is caused mainly by hyper(ADP-ribosyl)ation of histone H1	637999