Site-directed mutagenesis establishes aspartic acids-227 and -342 as essential for enzyme activity in an isomalto-dextranase from Arthrobacter globiformis
Takashi Tochihara, Katsutomo Sasaki, O. Araki, Naoki Morimoto, Kenji Watanabe, Yuji Hatada, Susumu Ito, Hiroyuki Ito, Hirokazu Matsui
Abstract