1.11.1.1 25°C, without H2O2 in assay system 85% loss of activity in 30 min 395331 1.11.1.1 low concentrations of urea stabilize an intermediate state in the transition between native and denatured form 395340 1.11.1.1 The presence of the peptergents V6K, A6D, and a 40:60 mixture of A6D:A6K all extends the enzymatic half-life to over 3-5 times longer than in its absence. 672012