3.5.4.5 15 75 wild-type enzyme and mutant R68Q are stable, while the stability of mutant Y60G is decreased above 65°C 689935 3.5.4.5 50 - 15 min, absence of dithiothreitol, 44% residual activity 650635 3.5.4.5 50 - relatively heat stable, no loss of activity when heated for 15 min, activity completely lost after heating at 75°C 209649 3.5.4.5 60 - relatively labile to thermal treatment, complete inactivation by incubation for 30 min 209660 3.5.4.5 65 - stable up to 657220 3.5.4.5 70 90 the CDA activity of genes SH1067 and SH1077 remains constant for 3 h at 70°C, the half-time of residual activities of SH1067 and SH1077 increases up to 200% as compared with that of gene T53 at 80°C, SH1067 shows over 200% increased half-time than that of T53, although 120 min later, no activity remains at 90°C. SH2426 shows 150% increased half-time than that of T53 at 70°C. SH2429 shows over 50-70% decreased thermostability than that of T53 at 70°C, residual activity disappears after 10 min at over 80°C 712721 3.5.4.5 72 - 30 min, irreversible denaturation 657220 3.5.4.5 80 - stable for at least 60 min 669137 3.5.4.5 90 - 5 min, 33% loss of activity 669137 3.5.4.5 100 - 1 h, 1 mM dithiothreitol, 48% residual activity 650635 3.5.4.5 100 - 1 h, presence of D,L-lipoic acid, pH 7.0, 75% residual activity 650635 3.5.4.5 100 - 15 min, 1 mM dithiothreitol, 80% residual activity 650635 3.5.4.5 100 - 2 h, 50 mM dithiothreitol, 56% residual activity 650635