1.3.1.13 54 - melting temperature 740113 1.3.1.13 55 - up to 10 min inactivates the enzyme 390557 1.3.1.13 80 95 the enzyme retains full dehydrogenase activity after 50 h incubation at 80°C and greater than 50% of specific activity after 50 h at 95°C 740420