4.1.2.4 citrate stabilizes below pH 6.5 5180 4.1.2.4 not stable to freezing. Loses all activity when frozen and thawed 5164 4.1.2.4 stabilization by 0.01 M MgCl2 or sulfhydryl reagents 5166 4.1.2.4 the enzyme directly immobilized through ionic exchange interactions on oxidized multiwalled carbon nanotubes is stable with a high tolerance to acetaldehyde, and maintains its activity for several days, being reused for five runs 746574 4.1.2.4 the enzyme is highly resistant to a high concentration of acetaldehyde and retains about 35% of its initial activity after 5-h exposure to 300 mM acetaldehyde at 25°C 749222 4.1.2.4 the enzyme retains more than 75% activity after exposure for 8 h to 300 mM acetaldehyde at 25°C. 713699 4.1.2.4 the enzyme shows stability toward a high concentration of acetaldehyde (100 mM) 715884 4.1.2.4 the immobilized enzyme is highly resistant to acetaldehyde. The enzyme immobilized on glutaraldehyde-(3-aminopropyl)triethoxysilane nano-magnet material retains 67.4% of its 2-deoxy-D-ribose-5-phosphate cleavage activity after incubation for 10 h in the presence of 300 mM acetaldehyde at 25°C. No activity is observed for the free enzyme after incubation for 3 h under the same conditions 748402 4.1.2.4 the recombinant enzyme is stable in a buffer containing 2 M NaCl 749222