2.1.4.1 additional information - inactive CyrA lacks a well-defined tertiary structure at any temperature 719453 2.1.4.1 additional information - the three mutant variants have lower Tmax values than the wild-type with 54°C compared to 48°C, 51.5°C and 49.5°C for F245N, S247M, and F245N/S247M, respectively 719473 2.1.4.1 44.5 - an inactivated form of this enzyme retains an appreciable amount of secondary structure elements even on heating to 94°C, but loses its tertiary structure at low temperature of 44.5°C resulting in a state reminiscent of a molten globule. The presence of 500 mm NaCl decreases Tmax at pH 7.5 from 54°C to 49°C 719453 2.1.4.1 100 - inactivation by incubation for 5 min 485960