the first-order rate constants and arrhenius plots for these six enzyme forms showed that ( 1 ) isoenzyme ca ii is more heat-stable than ca i , ( 2 ) isoenzyme ca i ( +1 ) is less heat-stable than ca i , ( 3 ) the variants ca iih and ca if london are less heat-stable than the normal enzymes , and ( 4 ) isoenzyme ca id michigan is more heat-stable than normal ca i .
C0014442
enzymes
C0022173
isoenzyme