4.5.1.B1 additional information - residues Q20 and G23 are determinants of thermostability for LinA-type2 4.5.1.B1 45 - loss of 50% activity after 60 min 4.5.1.B1 45 - Tm, complete inactivation after 1 h 4.5.1.B1 45 65 8 h, completely stable, Tm is 65°C 4.5.1.B1 70 - 3 min, inactivation