Thermal Inactivation Properties of Enzymes from Typha latifolia L. Ecotypes

Abstract

Irreversible thermal denaturation experiments with 3 enzymes from Typha latifolia populations native to distinct thermal climates produced 3 different responses: malate dehydrogenase (EC 1.1.1.37) was much more resistant to high temperature inactivation when obtained from plants native to a hot climate: glutamate-oxaloacetate transaminase (EC 2.6.1.1) was quite resistant to thermal denaturation regardless of origin; and aldolase (EC 4.1.2.b) was rapidly inactivated by heat regardless of origin.