- Nucleotide sequence of the maltohexaose-producing amylase gene from an alkalophilic Bacillus sp. #707 and structural similarity to liquefying type alpha-amylases. Tsukamoto, A., Kimura, K., Ishii, Y., Takano, T., Yamane, K. Biochem. Biophys. Res. Commun. (1988)