K. Hirata et al., Properties of alpha-mannosidase partially purified from the apple snail, Pomacea canaliculata, BIOS BIOT B, 62(11), 1998, pp. 2242-2245
Pomacea canaliculata alpha-mannosidase (260 kDa), composed of at least two
isoforms with different pI, was partially purified. The activity was maximu
m at pH 4 and unaltered after incubation at 60 degrees C for 60 min. ZnCl2,
CaCl2, NaCl, and SH-reagents increased the activity, while MnCl2 and EDTA
inhibited it. The enzyme catalyzed the hydrolysis of alpha 1-2, alpha 1-3,
and alpha 1-6 mannosidic linkages.