Article
Enhancing thermostability and the structural characterization of Microbacterium saccharophilum K-1 β-fructofuranosidase.
Applied microbiology and biotechnology - 1 Aug 2014
Ohta Yukari, Hatada Yuji, Hidaka Yuko, Shimane Yasuhiro, Usui Keiko, Ito Tetsuya, Fujita Koki, Yokoi Gaku, Mori Marina, Sato Shona, Miyazaki Takatsugu, Nishikawa Atsushi, Tonozuka Takashi
Abstract excerpt
A β-fructofuranosidase from Microbacterium saccharophilum K-1 (formerly known as Arthrobacter sp. K-1) is useful for producing the sweetener lactosucrose (4(G)-β-D-galactosylsucrose). Thermostability of the β-fructofuranosidase was enhanced by random mutagenesis and saturation mutagenesis. Clones with enhanced thermostability included mutations at residues Thr47, Ser200, Phe447, Phe470, and Pro500. In the highest...
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