3.1.11.2 DNA urea-containg DNA is a competitive inhibitor when apurinic DNA is used as substrate, apurinic DNA inhibits when urea-containing DNA is used as substrate 293 3.1.11.2 DNA - 293 3.1.11.2 EDTA - 21 3.1.11.2 Mn2+ at concentrations above 5 mM 11 3.1.11.2 additional information while a clamp-specific inhibitor can disrupt the beta-clamp-XthA complex, a proliferating cell nuclear antigen (PCNA)-specific inhibitor is not able to do so 2 3.1.11.2 NaCl no activity above 300 mM 42 3.1.11.2 NaCl addition of more than 200 mM salt, strongly inhibits the endonuclease activity 42 3.1.11.2 p-chloromercuribenzoate 50% inhibition of DNA phosphatase activity, 90% loss of exonuclease activity 43 3.1.11.2 PNA anti-parallel complementary PNA suppresses the degradation of double-stranded DNA by enzyme and the suppression is dependent on the amount and concentration of the PNA 117489 3.1.11.2 ZnCl2 0.03 mM, 95% inhibition 271 3.1.11.2 ZnCl2 0.03 mM, 90% inhibition of DNA phosphatase activity and 88% loss of exonuclease activity 271