| abstract |
There is a need for an alpha amylase that is more effective in commercial liquefaction processes, has a stable activity at higher temperatures, at lower pH, and at a higher pH. [Solution] The present invention provides a precursor Bacillus stearothermophilus α-amylase variant having a deletion at positions R179 and G180 of the amino acid sequence shown in SEQ ID NO: 3. This α-amylase variant has modified functional properties such as improved stability at high temperatures. [Selection] Figure 7 |