The novel glucose dehydrogenase

A substrate specificity, by excellent specific activity, and the thermal stability and the like, to provide a new glucose dehydrogenase suitable for use in the SMBG sensors A below (a) ~ (c one of flavin-binding glucose dehydrogenase consisting of the polypeptide of); (a) a polypeptide comprising an amino acid sequence shown in SEQ ID NO: 1, in the amino acid sequence shown in (b) SEQ ID NO: 1, one or several identical substitution, deletion, insertion, addition and / or inversion amino acid sequence, and polypeptides having glucose dehydrogenase activity, and the amino acid sequence shown in (c) SEQ ID NO: 1 of the amino acid residues sex is the amino acid sequence is 80% or more, and a polypeptide having glucose dehydrogenase activity. .BACKGROUND