2.3.1.12 60 - stable up to 486202 2.3.1.12 70 - 1 h stable, isolated lipoyl domains 486166 2.3.1.12 70 - incubation converts core of the enzyme into an unidentified active molecular form X, loss of 10% enzyme activity after 5 h 486226 2.3.1.12 78 - temperatures below result in less than 5% loss in enzyme activity 486226 2.3.1.12 80 - partly precipitation above 486226